/*  Prototype JavaScript framework, version 1.6.0.2
 *  (c) 2005-2008 Sam Stephenson
 *
 *  Prototype is freely distributable under the terms of an MIT-style license.
 *  For details, see the Prototype web site: http://www.prototypejs.org/
 *
 *--------------------------------------------------------------------------*/

var Prototype = {
  Version: '1.6.0.2',

  Browser: {
    IE:     !!(window.attachEvent && !window.opera),
    Opera:  !!window.opera,
    WebKit: navigator.userAgent.indexOf('AppleWebKit/') > -1,
    Gecko:  navigator.userAgent.indexOf('Gecko') > -1 && navigator.userAgent.indexOf('KHTML') == -1,
    MobileSafari: !!navigator.userAgent.match(/Apple.*Mobile.*Safari/)
  },
//
  BrowserFeatures: {
    XPath: !!document.evaluate,
    ElementExtensions: !!window.HTMLElement,
    SpecificElementExtensions:
      document.createElement('div').__proto__ &&
      document.createElement('div').__proto__ !==
        document.createElement('form').__proto__
  },

  ScriptFragment: '<script[^>]*>([\\S\\s]*?)<\/script>',
  JSONFilter: /^\/\*-secure-([\s\S]*)\*\/\s*$/,

  emptyFunction: function() { },
  K: function(x) { return x }
};

if (Prototype.Browser.MobileSafari)
  Prototype.BrowserFeatures.SpecificElementExtensions = false;


/* Based on Alex Arnell's inheritance implementation. */
var Class = {
  create: function() {
    var parent = null, properties = $A(arguments);
    if (Object.isFunction(properties[0]))
      parent = properties.shift();

    function klass() {
      this.initialize.apply(this, arguments);
    }

    Object.extend(klass, Class.Methods);
    klass.superclass = parent;
    klass.subclasses = [];

    if (parent) {
      var subclass = function() { };
      subclass.prototype = parent.prototype;
      klass.prototype = new subclass;
      parent.subclasses.push(klass);
    }

    for (var i = 0; i < properties.length; i++)
      klass.addMethods(properties[i]);

    if (!klass.prototype.initialize)
      klass.prototype.initialize = Prototype.emptyFunction;

    klass.prototype.constructor = klass;

    return klass;
  }
};

Class.Methods = {
  addMethods: function(source) {
    var ancestor   = this.superclass && this.superclass.prototype;
    var properties = Object.keys(source);

    if (!Object.keys({ toString: true }).length)
      properties.push("toString", "valueOf");

    for (var i = 0, length = properties.length; i < length; i++) {
      var property = properties[i], value = source[property];
      if (ancestor && Object.isFunction(value) &&
          value.argumentNames().first() == "$super") {
        var method = value, value = Object.extend((function(m) {
          return function() { return ancestor[m].apply(this, arguments) };
        })(property).wrap(method), {
          valueOf:  function() { return method },
          toString: function() { return method.toString() }
        });
      }
      this.prototype[property] = value;
    }

    return this;
  }
};

var Abstract = { };

Object.extend = function(destination, source) {
  for (var property in source)
    destination[property] = source[property];
  return destination;
};

Object.extend(Object, {
  inspect: function(object) {
    try {
      if (Object.isUndefined(object)) return 'undefined';
      if (object === null) return 'null';
      return object.inspect ? object.inspect() : String(object);
    } catch (e) {
      if (e instanceof RangeError) return '...';
      throw e;
    }
  },

  toJSON: function(object) {
    var type = typeof object;
    switch (type) {
      case 'undefined':
      case 'function':
      case 'unknown': return;
      case 'boolean': return object.toString();
    }

    if (object === null) return 'null';
    if (object.toJSON) return object.toJSON();
    if (Object.isElement(object)) return;

    var results = [];
    for (var property in object) {
      var value = Object.toJSON(object[property]);
      if (!Object.isUndefined(value))
        results.push(property.toJSON() + ': ' + value);
    }

    return '{' + results.join(', ') + '}';
  },

  toQueryString: function(object) {
    return $H(object).toQueryString();
  },

  toHTML: function(object) {
    return object && object.toHTML ? object.toHTML() : String.interpret(object);
  },

  keys: function(object) {
    var keys = [];
    for (var property in object)
      keys.push(property);
    return keys;
  },

  values: function(object) {
    var values = [];
    for (var property in object)
      values.push(object[property]);
    return values;
  },

  clone: function(object) {
    return Object.extend({ }, object);
  },

  isElement: function(object) {
    return object && object.nodeType == 1;
  },

  isArray: function(object) {
    return object != null && typeof object == "object" &&
      'splice' in object && 'join' in object;
  },

  isHash: function(object) {
    return object instanceof Hash;
  },

  isFunction: function(object) {
    return typeof object == "function";
  },

  isString: function(object) {
    return typeof object == "string";
  },

  isNumber: function(object) {
    return typeof object == "number";
  },

  isUndefined: function(object) {
    return typeof object == "undefined";
  }
});

Object.extend(Function.prototype, {
  argumentNames: function() {
    var names = this.toString().match(/^[\s\(]*function[^(]*\((.*?)\)/)[1].split(",").invoke("strip");
    return names.length == 1 && !names[0] ? [] : names;
  },

  bind: function() {
    if (arguments.length < 2 && Object.isUndefined(arguments[0])) return this;
    var __method = this, args = $A(arguments), object = args.shift();
    return function() {
      return __method.apply(object, args.concat($A(arguments)));
    }
  },

  bindAsEventListener: function() {
    var __method = this, args = $A(arguments), object = args.shift();
    return function(event) {
      return __method.apply(object, [event || window.event].concat(args));
    }
  },

  curry: function() {
    if (!arguments.length) return this;
    var __method = this, args = $A(arguments);
    return function() {
      return __method.apply(this, args.concat($A(arguments)));
    }
  },

  delay: function() {
    var __method = this, args = $A(arguments), timeout = args.shift() * 1000;
    return window.setTimeout(function() {
      return __method.apply(__method, args);
    }, timeout);
  },

  wrap: function(wrapper) {
    var __method = this;
    return function() {
      return wrapper.apply(this, [__method.bind(this)].concat($A(arguments)));
    }
  },

  methodize: function() {
    if (this._methodized) return this._methodized;
    var __method = this;
    return this._methodized = function() {
      return __method.apply(null, [this].concat($A(arguments)));
    };
  }
});

Function.prototype.defer = Function.prototype.delay.curry(0.01);

Date.prototype.toJSON = function() {
  return '"' + this.getUTCFullYear() + '-' +
    (this.getUTCMonth() + 1).toPaddedString(2) + '-' +
    this.getUTCDate().toPaddedString(2) + 'T' +
    this.getUTCHours().toPaddedString(2) + ':' +
    this.getUTCMinutes().toPaddedString(2) + ':' +
    this.getUTCSeconds().toPaddedString(2) + 'Z"';
};

var Try = {
  these: function() {
    var returnValue;

    for (var i = 0, length = arguments.length; i < length; i++) {
      var lambda = arguments[i];
      try {
        returnValue = lambda();
        break;
      } catch (e) { }
    }

    return returnValue;
  }
};

RegExp.prototype.match = RegExp.prototype.test;

RegExp.escape = function(str) {
  return String(str).replace(/([.*+?^=!:${}()|[\]\/\\])/g, '\\$1');
};

/*--------------------------------------------------------------------------*/

var PeriodicalExecuter = Class.create({
  initialize: function(callback, frequency) {
    this.callback = callback;
    this.frequency = frequency;
    this.currentlyExecuting = false;

    this.registerCallback();
  },

  registerCallback: function() {
    this.timer = setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);
  },

  execute: function() {
    this.callback(this);
  },

  stop: function() {
    if (!this.timer) return;
    clearInterval(this.timer);
    this.timer = null;
  },

  onTimerEvent: function() {
    if (!this.currentlyExecuting) {
      try {
        this.currentlyExecuting = true;
        this.execute();
      } finally {
        this.currentlyExecuting = false;
      }
    }
  }
});
Object.extend(String, {
  interpret: function(value) {
    return value == null ? '' : String(value);
  },
  specialChar: {
    '\b': '\\b',
    '\t': '\\t',
    '\n': '\\n',
    '\f': '\\f',
    '\r': '\\r',
    '\\': '\\\\'
  }
});

Object.extend(String.prototype, {
  gsub: function(pattern, replacement) {
    var result = '', source = this, match;
    replacement = arguments.callee.prepareReplacement(replacement);

    while (source.length > 0) {
      if (match = source.match(pattern)) {
        result += source.slice(0, match.index);
        result += String.interpret(replacement(match));
        source  = source.slice(match.index + match[0].length);
      } else {
        result += source, source = '';
      }
    }
    return result;
  },

  sub: function(pattern, replacement, count) {
    replacement = this.gsub.prepareReplacement(replacement);
    count = Object.isUndefined(count) ? 1 : count;

    return this.gsub(pattern, function(match) {
      if (--count < 0) return match[0];
      return replacement(match);
    });
  },

  scan: function(pattern, iterator) {
    this.gsub(pattern, iterator);
    return String(this);
  },

  truncate: function(length, truncation) {
    length = length || 30;
    truncation = Object.isUndefined(truncation) ? '...' : truncation;
    return this.length > length ?
      this.slice(0, length - truncation.length) + truncation : String(this);
  },

  strip: function() {
    return this.replace(/^\s+/, '').replace(/\s+$/, '');
  },

  stripTags: function() {
    return this.replace(/<\/?[^>]+>/gi, '');
  },

  stripScripts: function() {
    return this.replace(new RegExp(Prototype.ScriptFragment, 'img'), '');
  },

  extractScripts: function() {
    var matchAll = new RegExp(Prototype.ScriptFragment, 'img');
    var matchOne = new RegExp(Prototype.ScriptFragment, 'im');
    return (this.match(matchAll) || []).map(function(scriptTag) {
      return (scriptTag.match(matchOne) || ['', ''])[1];
    });
  },

  evalScripts: function() {
    return this.extractScripts().map(function(script) { return eval(script) });
  },

  escapeHTML: function() {
    var self = arguments.callee;
    self.text.data = this;
    return self.div.innerHTML;
  },

  unescapeHTML: function() {
    var div = new Element('div');
    div.innerHTML = this.stripTags();
    return div.childNodes[0] ? (div.childNodes.length > 1 ?
      $A(div.childNodes).inject('', function(memo, node) { return memo+node.nodeValue }) :
      div.childNodes[0].nodeValue) : '';
  },

  toQueryParams: function(separator) {
    var match = this.strip().match(/([^?#]*)(#.*)?$/);
    if (!match) return { };

    return match[1].split(separator || '&').inject({ }, function(hash, pair) {
      if ((pair = pair.split('='))[0]) {
        var key = decodeURIComponent(pair.shift());
        var value = pair.length > 1 ? pair.join('=') : pair[0];
        if (value != undefined) value = decodeURIComponent(value);

        if (key in hash) {
          if (!Object.isArray(hash[key])) hash[key] = [hash[key]];
          hash[key].push(value);
        }
        else hash[key] = value;
      }
      return hash;
    });
  },

  toArray: function() {
    return this.split('');
  },

  succ: function() {
    return this.slice(0, this.length - 1) +
      String.fromCharCode(this.charCodeAt(this.length - 1) + 1);
  },

  times: function(count) {
    return count < 1 ? '' : new Array(count + 1).join(this);
  },

  camelize: function() {
    var parts = this.split('-'), len = parts.length;
    if (len == 1) return parts[0];

    var camelized = this.charAt(0) == '-'
      ? parts[0].charAt(0).toUpperCase() + parts[0].substring(1)
      : parts[0];

    for (var i = 1; i < len; i++)
      camelized += parts[i].charAt(0).toUpperCase() + parts[i].substring(1);

    return camelized;
  },

  capitalize: function() {
    return this.charAt(0).toUpperCase() + this.substring(1).toLowerCase();
  },

  underscore: function() {
    return this.gsub(/::/, '/').gsub(/([A-Z]+)([A-Z][a-z])/,'#{1}_#{2}').gsub(/([a-z\d])([A-Z])/,'#{1}_#{2}').gsub(/-/,'_').toLowerCase();
  },

  dasherize: function() {
    return this.gsub(/_/,'-');
  },

  inspect: function(useDoubleQuotes) {
    var escapedString = this.gsub(/[\x00-\x1f\\]/, function(match) {
      var character = String.specialChar[match[0]];
      return character ? character : '\\u00' + match[0].charCodeAt().toPaddedString(2, 16);
    });
    if (useDoubleQuotes) return '"' + escapedString.replace(/"/g, '\\"') + '"';
    return "'" + escapedString.replace(/'/g, '\\\'') + "'";
  },

  toJSON: function() {
    return this.inspect(true);
  },

  unfilterJSON: function(filter) {
    return this.sub(filter || Prototype.JSONFilter, '#{1}');
  },

  isJSON: function() {
    var str = this;
    if (str.blank()) return false;
    str = this.replace(/\\./g, '@').replace(/"[^"\\\n\r]*"/g, '');
    return (/^[,:{}\[\]0-9.\-+Eaeflnr-u \n\r\t]*$/).test(str);
  },

  evalJSON: function(sanitize) {
    var json = this.unfilterJSON();
    try {
      if (!sanitize || json.isJSON()) return eval('(' + json + ')');
    } catch (e) { }
    throw new SyntaxError('Badly formed JSON string: ' + this.inspect());
  },

  include: function(pattern) {
    return this.indexOf(pattern) > -1;
  },

  startsWith: function(pattern) {
    return this.indexOf(pattern) === 0;
  },

  endsWith: function(pattern) {
    var d = this.length - pattern.length;
    return d >= 0 && this.lastIndexOf(pattern) === d;
  },

  empty: function() {
    return this == '';
  },

  blank: function() {
    return /^\s*$/.test(this);
  },

  interpolate: function(object, pattern) {
    return new Template(this, pattern).evaluate(object);
  }
});

if (Prototype.Browser.WebKit || Prototype.Browser.IE) Object.extend(String.prototype, {
  escapeHTML: function() {
    return this.replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;');
  },
  unescapeHTML: function() {
    return this.replace(/&amp;/g,'&').replace(/&lt;/g,'<').replace(/&gt;/g,'>');
  }
});

String.prototype.gsub.prepareReplacement = function(replacement) {
  if (Object.isFunction(replacement)) return replacement;
  var template = new Template(replacement);
  return function(match) { return template.evaluate(match) };
};

String.prototype.parseQuery = String.prototype.toQueryParams;

Object.extend(String.prototype.escapeHTML, {
  div:  document.createElement('div'),
  text: document.createTextNode('')
});

with (String.prototype.escapeHTML) div.appendChild(text);

var Template = Class.create({
  initialize: function(template, pattern) {
    this.template = template.toString();
    this.pattern = pattern || Template.Pattern;
  },

  evaluate: function(object) {
    if (Object.isFunction(object.toTemplateReplacements))
      object = object.toTemplateReplacements();

    return this.template.gsub(this.pattern, function(match) {
      if (object == null) return '';

      var before = match[1] || '';
      if (before == '\\') return match[2];

      var ctx = object, expr = match[3];
      var pattern = /^([^.[]+|\[((?:.*?[^\\])?)\])(\.|\[|$)/;
      match = pattern.exec(expr);
      if (match == null) return before;

      while (match != null) {
        var comp = match[1].startsWith('[') ? match[2].gsub('\\\\]', ']') : match[1];
        ctx = ctx[comp];
        if (null == ctx || '' == match[3]) break;
        expr = expr.substring('[' == match[3] ? match[1].length : match[0].length);
        match = pattern.exec(expr);
      }

      return before + String.interpret(ctx);
    });
  }
});
Template.Pattern = /(^|.|\r|\n)(#\{(.*?)\})/;

var $break = { };

var Enumerable = {
  each: function(iterator, context) {
    var index = 0;
    iterator = iterator.bind(context);
    try {
      this._each(function(value) {
        iterator(value, index++);
      });
    } catch (e) {
      if (e != $break) throw e;
    }
    return this;
  },

  eachSlice: function(number, iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var index = -number, slices = [], array = this.toArray();
    while ((index += number) < array.length)
      slices.push(array.slice(index, index+number));
    return slices.collect(iterator, context);
  },

  all: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result = true;
    this.each(function(value, index) {
      result = result && !!iterator(value, index);
      if (!result) throw $break;
    });
    return result;
  },

  any: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result = false;
    this.each(function(value, index) {
      if (result = !!iterator(value, index))
        throw $break;
    });
    return result;
  },

  collect: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var results = [];
    this.each(function(value, index) {
      results.push(iterator(value, index));
    });
    return results;
  },

  detect: function(iterator, context) {
    iterator = iterator.bind(context);
    var result;
    this.each(function(value, index) {
      if (iterator(value, index)) {
        result = value;
        throw $break;
      }
    });
    return result;
  },

  findAll: function(iterator, context) {
    iterator = iterator.bind(context);
    var results = [];
    this.each(function(value, index) {
      if (iterator(value, index))
        results.push(value);
    });
    return results;
  },

  grep: function(filter, iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var results = [];

    if (Object.isString(filter))
      filter = new RegExp(filter);

    this.each(function(value, index) {
      if (filter.match(value))
        results.push(iterator(value, index));
    });
    return results;
  },

  include: function(object) {
    if (Object.isFunction(this.indexOf))
      if (this.indexOf(object) != -1) return true;

    var found = false;
    this.each(function(value) {
      if (value == object) {
        found = true;
        throw $break;
      }
    });
    return found;
  },

  inGroupsOf: function(number, fillWith) {
    fillWith = Object.isUndefined(fillWith) ? null : fillWith;
    return this.eachSlice(number, function(slice) {
      while(slice.length < number) slice.push(fillWith);
      return slice;
    });
  },

  inject: function(memo, iterator, context) {
    iterator = iterator.bind(context);
    this.each(function(value, index) {
      memo = iterator(memo, value, index);
    });
    return memo;
  },

  invoke: function(method) {
    var args = $A(arguments).slice(1);
    return this.map(function(value) {
      return value[method].apply(value, args);
    });
  },

  max: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator(value, index);
      if (result == null || value >= result)
        result = value;
    });
    return result;
  },

  min: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator(value, index);
      if (result == null || value < result)
        result = value;
    });
    return result;
  },

  partition: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var trues = [], falses = [];
    this.each(function(value, index) {
      (iterator(value, index) ?
        trues : falses).push(value);
    });
    return [trues, falses];
  },

  pluck: function(property) {
    var results = [];
    this.each(function(value) {
      results.push(value[property]);
    });
    return results;
  },

  reject: function(iterator, context) {
    iterator = iterator.bind(context);
    var results = [];
    this.each(function(value, index) {
      if (!iterator(value, index))
        results.push(value);
    });
    return results;
  },

  sortBy: function(iterator, context) {
    iterator = iterator.bind(context);
    return this.map(function(value, index) {
      return {value: value, criteria: iterator(value, index)};
    }).sort(function(left, right) {
      var a = left.criteria, b = right.criteria;
      return a < b ? -1 : a > b ? 1 : 0;
    }).pluck('value');
  },

  toArray: function() {
    return this.map();
  },

  zip: function() {
    var iterator = Prototype.K, args = $A(arguments);
    if (Object.isFunction(args.last()))
      iterator = args.pop();

    var collections = [this].concat(args).map($A);
    return this.map(function(value, index) {
      return iterator(collections.pluck(index));
    });
  },

  size: function() {
    return this.toArray().length;
  },

  inspect: function() {
    return '#<Enumerable:' + this.toArray().inspect() + '>';
  }
};

Object.extend(Enumerable, {
  map:     Enumerable.collect,
  find:    Enumerable.detect,
  select:  Enumerable.findAll,
  filter:  Enumerable.findAll,
  member:  Enumerable.include,
  entries: Enumerable.toArray,
  every:   Enumerable.all,
  some:    Enumerable.any
});
function $A(iterable) {
  if (!iterable) return [];
  if (iterable.toArray) return iterable.toArray();
  var length = iterable.length || 0, results = new Array(length);
  while (length--) results[length] = iterable[length];
  return results;
}

if (Prototype.Browser.WebKit) {
  $A = function(iterable) {
    if (!iterable) return [];
    if (!(Object.isFunction(iterable) && iterable == '[object NodeList]') &&
        iterable.toArray) return iterable.toArray();
    var length = iterable.length || 0, results = new Array(length);
    while (length--) results[length] = iterable[length];
    return results;
  };
}

Array.from = $A;

Object.extend(Array.prototype, Enumerable);

if (!Array.prototype._reverse) Array.prototype._reverse = Array.prototype.reverse;

Object.extend(Array.prototype, {
  _each: function(iterator) {
    for (var i = 0, length = this.length; i < length; i++)
      iterator(this[i]);
  },

  clear: function() {
    this.length = 0;
    return this;
  },

  first: function() {
    return this[0];
  },

  last: function() {
    return this[this.length - 1];
  },

  compact: function() {
    return this.select(function(value) {
      return value != null;
    });
  },

  flatten: function() {
    return this.inject([], function(array, value) {
      return array.concat(Object.isArray(value) ?
        value.flatten() : [value]);
    });
  },

  without: function() {
    var values = $A(arguments);
    return this.select(function(value) {
      return !values.include(value);
    });
  },

  reverse: function(inline) {
    return (inline !== false ? this : this.toArray())._reverse();
  },

  reduce: function() {
    return this.length > 1 ? this : this[0];
  },

  uniq: function(sorted) {
    return this.inject([], function(array, value, index) {
      if (0 == index || (sorted ? array.last() != value : !array.include(value)))
        array.push(value);
      return array;
    });
  },

  intersect: function(array) {
    return this.uniq().findAll(function(item) {
      return array.detect(function(value) { return item === value });
    });
  },

  clone: function() {
    return [].concat(this);
  },

  size: function() {
    return this.length;
  },

  inspect: function() {
    return '[' + this.map(Object.inspect).join(', ') + ']';
  },

  toJSON: function() {
    var results = [];
    this.each(function(object) {
      var value = Object.toJSON(object);
      if (!Object.isUndefined(value)) results.push(value);
    });
    return '[' + results.join(', ') + ']';
  }
});

// use native browser JS 1.6 implementation if available
if (Object.isFunction(Array.prototype.forEach))
  Array.prototype._each = Array.prototype.forEach;

if (!Array.prototype.indexOf) Array.prototype.indexOf = function(item, i) {
  i || (i = 0);
  var length = this.length;
  if (i < 0) i = length + i;
  for (; i < length; i++)
    if (this[i] === item) return i;
  return -1;
};

if (!Array.prototype.lastIndexOf) Array.prototype.lastIndexOf = function(item, i) {
  i = isNaN(i) ? this.length : (i < 0 ? this.length + i : i) + 1;
  var n = this.slice(0, i).reverse().indexOf(item);
  return (n < 0) ? n : i - n - 1;
};

Array.prototype.toArray = Array.prototype.clone;

function $w(string) {
  if (!Object.isString(string)) return [];
  string = string.strip();
  return string ? string.split(/\s+/) : [];
}

if (Prototype.Browser.Opera){
  Array.prototype.concat = function() {
    var array = [];
    for (var i = 0, length = this.length; i < length; i++) array.push(this[i]);
    for (var i = 0, length = arguments.length; i < length; i++) {
      if (Object.isArray(arguments[i])) {
        for (var j = 0, arrayLength = arguments[i].length; j < arrayLength; j++)
          array.push(arguments[i][j]);
      } else {
        array.push(arguments[i]);
      }
    }
    return array;
  };
}
Object.extend(Number.prototype, {
  toColorPart: function() {
    return this.toPaddedString(2, 16);
  },

  succ: function() {
    return this + 1;
  },

  times: function(iterator) {
    $R(0, this, true).each(iterator);
    return this;
  },

  toPaddedString: function(length, radix) {
    var string = this.toString(radix || 10);
    return '0'.times(length - string.length) + string;
  },

  toJSON: function() {
    return isFinite(this) ? this.toString() : 'null';
  }
});

$w('abs round ceil floor').each(function(method){
  Number.prototype[method] = Math[method].methodize();
});
function $H(object) {
  return new Hash(object);
};

var Hash = Class.create(Enumerable, (function() {

  function toQueryPair(key, value) {
    if (Object.isUndefined(value)) return key;
    return key + '=' + encodeURIComponent(String.interpret(value));
  }

  return {
    initialize: function(object) {
      this._object = Object.isHash(object) ? object.toObject() : Object.clone(object);
    },

    _each: function(iterator) {
      for (var key in this._object) {
        var value = this._object[key], pair = [key, value];
        pair.key = key;
        pair.value = value;
        iterator(pair);
      }
    },

    set: function(key, value) {
      return this._object[key] = value;
    },

    get: function(key) {
      return this._object[key];
    },

    unset: function(key) {
      var value = this._object[key];
      delete this._object[key];
      return value;
    },

    toObject: function() {
      return Object.clone(this._object);
    },

    keys: function() {
      return this.pluck('key');
    },

    values: function() {
      return this.pluck('value');
    },

    index: function(value) {
      var match = this.detect(function(pair) {
        return pair.value === value;
      });
      return match && match.key;
    },

    merge: function(object) {
      return this.clone().update(object);
    },

    update: function(object) {
      return new Hash(object).inject(this, function(result, pair) {
        result.set(pair.key, pair.value);
        return result;
      });
    },

    toQueryString: function() {
      return this.map(function(pair) {
        var key = encodeURIComponent(pair.key), values = pair.value;

        if (values && typeof values == 'object') {
          if (Object.isArray(values))
            return values.map(toQueryPair.curry(key)).join('&');
        }
        return toQueryPair(key, values);
      }).join('&');
    },

    inspect: function() {
      return '#<Hash:{' + this.map(function(pair) {
        return pair.map(Object.inspect).join(': ');
      }).join(', ') + '}>';
    },

    toJSON: function() {
      return Object.toJSON(this.toObject());
    },

    clone: function() {
      return new Hash(this);
    }
  }
})());

Hash.prototype.toTemplateReplacements = Hash.prototype.toObject;
Hash.from = $H;
var ObjectRange = Class.create(Enumerable, {
  initialize: function(start, end, exclusive) {
    this.start = start;
    this.end = end;
    this.exclusive = exclusive;
  },

  _each: function(iterator) {
    var value = this.start;
    while (this.include(value)) {
      iterator(value);
      value = value.succ();
    }
  },

  include: function(value) {
    if (value < this.start)
      return false;
    if (this.exclusive)
      return value < this.end;
    return value <= this.end;
  }
});

var $R = function(start, end, exclusive) {
  return new ObjectRange(start, end, exclusive);
};

var Ajax = {
  getTransport: function() {
    return Try.these(
      function() {return new XMLHttpRequest()},
      function() {return new ActiveXObject('Msxml2.XMLHTTP')},
      function() {return new ActiveXObject('Microsoft.XMLHTTP')}
    ) || false;
  },

  activeRequestCount: 0
};

Ajax.Responders = {
  responders: [],

  _each: function(iterator) {
    this.responders._each(iterator);
  },

  register: function(responder) {
    if (!this.include(responder))
      this.responders.push(responder);
  },

  unregister: function(responder) {
    this.responders = this.responders.without(responder);
  },

  dispatch: function(callback, request, transport, json) {
    this.each(function(responder) {
      if (Object.isFunction(responder[callback])) {
        try {
          responder[callback].apply(responder, [request, transport, json]);
        } catch (e) { }
      }
    });
  }
};

Object.extend(Ajax.Responders, Enumerable);

Ajax.Responders.register({
  onCreate:   function() { Ajax.activeRequestCount++ },
  onComplete: function() { Ajax.activeRequestCount-- }
});

Ajax.Base = Class.create({
  initialize: function(options) {
    this.options = {
      method:       'post',
      asynchronous: true,
      contentType:  'application/x-www-form-urlencoded',
      encoding:     'UTF-8',
      parameters:   '',
      evalJSON:     true,
      evalJS:       true
    };
    Object.extend(this.options, options || { });

    this.options.method = this.options.method.toLowerCase();

    if (Object.isString(this.options.parameters))
      this.options.parameters = this.options.parameters.toQueryParams();
    else if (Object.isHash(this.options.parameters))
      this.options.parameters = this.options.parameters.toObject();
  }
});

Ajax.Request = Class.create(Ajax.Base, {
  _complete: false,

  initialize: function($super, url, options) {
    $super(options);
    this.transport = Ajax.getTransport();
    this.request(url);
  },

  request: function(url) {
    this.url = url;
    this.method = this.options.method;
    var params = Object.clone(this.options.parameters);

    if (!['get', 'post'].include(this.method)) {
      // simulate other verbs over post
      params['_method'] = this.method;
      this.method = 'post';
    }

    this.parameters = params;

    if (params = Object.toQueryString(params)) {
      // when GET, append parameters to URL
      if (this.method == 'get')
        this.url += (this.url.include('?') ? '&' : '?') + params;
      else if (/Konqueror|Safari|KHTML/.test(navigator.userAgent))
        params += '&_=';
    }

    try {
      var response = new Ajax.Response(this);
      if (this.options.onCreate) this.options.onCreate(response);
      Ajax.Responders.dispatch('onCreate', this, response);

      this.transport.open(this.method.toUpperCase(), this.url,
        this.options.asynchronous);

      if (this.options.asynchronous) this.respondToReadyState.bind(this).defer(1);

      this.transport.onreadystatechange = this.onStateChange.bind(this);
      this.setRequestHeaders();

      this.body = this.method == 'post' ? (this.options.postBody || params) : null;
      this.transport.send(this.body);

      /* Force Firefox to handle ready state 4 for synchronous requests */
      if (!this.options.asynchronous && this.transport.overrideMimeType)
        this.onStateChange();

    }
    catch (e) {
      this.dispatchException(e);
    }
  },

  onStateChange: function() {
    var readyState = this.transport.readyState;
    if (readyState > 1 && !((readyState == 4) && this._complete))
      this.respondToReadyState(this.transport.readyState);
  },

  setRequestHeaders: function() {
    var headers = {
      'X-Requested-With': 'XMLHttpRequest',
      'X-Prototype-Version': Prototype.Version,
      'Accept': 'text/javascript, text/html, application/xml, text/xml, */*'
    };

    if (this.method == 'post') {
      headers['Content-type'] = this.options.contentType +
        (this.options.encoding ? '; charset=' + this.options.encoding : '');

      /* Force "Connection: close" for older Mozilla browsers to work
       * around a bug where XMLHttpRequest sends an incorrect
       * Content-length header. See Mozilla Bugzilla #246651.
       */
      if (this.transport.overrideMimeType &&
          (navigator.userAgent.match(/Gecko\/(\d{4})/) || [0,2005])[1] < 2005)
            headers['Connection'] = 'close';
    }

    // user-defined headers
    if (typeof this.options.requestHeaders == 'object') {
      var extras = this.options.requestHeaders;

      if (Object.isFunction(extras.push))
        for (var i = 0, length = extras.length; i < length; i += 2)
          headers[extras[i]] = extras[i+1];
      else
        $H(extras).each(function(pair) { headers[pair.key] = pair.value });
    }

    for (var name in headers)
      this.transport.setRequestHeader(name, headers[name]);
  },

  success: function() {
    var status = this.getStatus();
    return !status || (status >= 200 && status < 300);
  },

  getStatus: function() {
    try {
      return this.transport.status || 0;
    } catch (e) { return 0 }
  },

  respondToReadyState: function(readyState) {
    var state = Ajax.Request.Events[readyState], response = new Ajax.Response(this);

    if (state == 'Complete') {
      try {
        this._complete = true;
        (this.options['on' + response.status]
         || this.options['on' + (this.success() ? 'Success' : 'Failure')]
         || Prototype.emptyFunction)(response, response.headerJSON);
      } catch (e) {
        this.dispatchException(e);
      }

      var contentType = response.getHeader('Content-type');
      if (this.options.evalJS == 'force'
          || (this.options.evalJS && this.isSameOrigin() && contentType
          && contentType.match(/^\s*(text|application)\/(x-)?(java|ecma)script(;.*)?\s*$/i)))
        this.evalResponse();
    }

    try {
      (this.options['on' + state] || Prototype.emptyFunction)(response, response.headerJSON);
      Ajax.Responders.dispatch('on' + state, this, response, response.headerJSON);
    } catch (e) {
      this.dispatchException(e);
    }

    if (state == 'Complete') {
      // avoid memory leak in MSIE: clean up
      this.transport.onreadystatechange = Prototype.emptyFunction;
    }
  },

  isSameOrigin: function() {
    var m = this.url.match(/^\s*https?:\/\/[^\/]*/);
    return !m || (m[0] == '#{protocol}//#{domain}#{port}'.interpolate({
      protocol: location.protocol,
      domain: document.domain,
      port: location.port ? ':' + location.port : ''
    }));
  },

  getHeader: function(name) {
    try {
      return this.transport.getResponseHeader(name) || null;
    } catch (e) { return null }
  },

  evalResponse: function() {
    try {
      return eval((this.transport.responseText || '').unfilterJSON());
    } catch (e) {
      this.dispatchException(e);
    }
  },

  dispatchException: function(exception) {
    (this.options.onException || Prototype.emptyFunction)(this, exception);
    Ajax.Responders.dispatch('onException', this, exception);
  }
});

Ajax.Request.Events =
  ['Uninitialized', 'Loading', 'Loaded', 'Interactive', 'Complete'];

Ajax.Response = Class.create({
  initialize: function(request){
    this.request = request;
    var transport  = this.transport  = request.transport,
        readyState = this.readyState = transport.readyState;

    if((readyState > 2 && !Prototype.Browser.IE) || readyState == 4) {
      this.status       = this.getStatus();
      this.statusText   = this.getStatusText();
      this.responseText = String.interpret(transport.responseText);
      this.headerJSON   = this._getHeaderJSON();
    }

    if(readyState == 4) {
      var xml = transport.responseXML;
      this.responseXML  = Object.isUndefined(xml) ? null : xml;
      this.responseJSON = this._getResponseJSON();
    }
  },

  status:      0,
  statusText: '',

  getStatus: Ajax.Request.prototype.getStatus,

  getStatusText: function() {
    try {
      return this.transport.statusText || '';
    } catch (e) { return '' }
  },

  getHeader: Ajax.Request.prototype.getHeader,

  getAllHeaders: function() {
    try {
      return this.getAllResponseHeaders();
    } catch (e) { return null }
  },

  getResponseHeader: function(name) {
    return this.transport.getResponseHeader(name);
  },

  getAllResponseHeaders: function() {
    return this.transport.getAllResponseHeaders();
  },

  _getHeaderJSON: function() {
    var json = this.getHeader('X-JSON');
    if (!json) return null;
    json = decodeURIComponent(escape(json));
    try {
      return json.evalJSON(this.request.options.sanitizeJSON ||
        !this.request.isSameOrigin());
    } catch (e) {
      this.request.dispatchException(e);
    }
  },

  _getResponseJSON: function() {
    var options = this.request.options;
    if (!options.evalJSON || (options.evalJSON != 'force' &&
      !(this.getHeader('Content-type') || '').include('application/json')) ||
        this.responseText.blank())
          return null;
    try {
      return this.responseText.evalJSON(options.sanitizeJSON ||
        !this.request.isSameOrigin());
    } catch (e) {
      this.request.dispatchException(e);
    }
  }
});

Ajax.Updater = Class.create(Ajax.Request, {
  initialize: function($super, container, url, options) {
    this.container = {
      success: (container.success || container),
      failure: (container.failure || (container.success ? null : container))
    };

    options = Object.clone(options);
    var onComplete = options.onComplete;
    options.onComplete = (function(response, json) {
      this.updateContent(response.responseText);
      if (Object.isFunction(onComplete)) onComplete(response, json);
    }).bind(this);

    $super(url, options);
  },

  updateContent: function(responseText) {
    var receiver = this.container[this.success() ? 'success' : 'failure'],
        options = this.options;

    if (!options.evalScripts) responseText = responseText.stripScripts();

    if (receiver = $(receiver)) {
      if (options.insertion) {
        if (Object.isString(options.insertion)) {
          var insertion = { }; insertion[options.insertion] = responseText;
          receiver.insert(insertion);
        }
        else options.insertion(receiver, responseText);
      }
      else receiver.update(responseText);
    }
  }
});

Ajax.PeriodicalUpdater = Class.create(Ajax.Base, {
  initialize: function($super, container, url, options) {
    $super(options);
    this.onComplete = this.options.onComplete;

    this.frequency = (this.options.frequency || 2);
    this.decay = (this.options.decay || 1);

    this.updater = { };
    this.container = container;
    this.url = url;

    this.start();
  },

  start: function() {
    this.options.onComplete = this.updateComplete.bind(this);
    this.onTimerEvent();
  },

  stop: function() {
    this.updater.options.onComplete = undefined;
    clearTimeout(this.timer);
    (this.onComplete || Prototype.emptyFunction).apply(this, arguments);
  },

  updateComplete: function(response) {
    if (this.options.decay) {
      this.decay = (response.responseText == this.lastText ?
        this.decay * this.options.decay : 1);

      this.lastText = response.responseText;
    }
    this.timer = this.onTimerEvent.bind(this).delay(this.decay * this.frequency);
  },

  onTimerEvent: function() {
    this.updater = new Ajax.Updater(this.container, this.url, this.options);
  }
});
function $(element) {
  if (arguments.length > 1) {
    for (var i = 0, elements = [], length = arguments.length; i < length; i++)
      elements.push($(arguments[i]));
    return elements;
  }
  if (Object.isString(element))
    element = document.getElementById(element);
  return Element.extend(element);
}

if (Prototype.BrowserFeatures.XPath) {
  document._getElementsByXPath = function(expression, parentElement) {
    var results = [];
    var query = document.evaluate(expression, $(parentElement) || document,
      null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
    for (var i = 0, length = query.snapshotLength; i < length; i++)
      results.push(Element.extend(query.snapshotItem(i)));
    return results;
  };
}

/*--------------------------------------------------------------------------*/

if (!window.Node) var Node = { };

if (!Node.ELEMENT_NODE) {
  // DOM level 2 ECMAScript Language Binding
  Object.extend(Node, {
    ELEMENT_NODE: 1,
    ATTRIBUTE_NODE: 2,
    TEXT_NODE: 3,
    CDATA_SECTION_NODE: 4,
    ENTITY_REFERENCE_NODE: 5,
    ENTITY_NODE: 6,
    PROCESSING_INSTRUCTION_NODE: 7,
    COMMENT_NODE: 8,
    DOCUMENT_NODE: 9,
    DOCUMENT_TYPE_NODE: 10,
    DOCUMENT_FRAGMENT_NODE: 11,
    NOTATION_NODE: 12
  });
}

(function() {
  var element = this.Element;
  this.Element = function(tagName, attributes) {
    attributes = attributes || { };
    tagName = tagName.toLowerCase();
    var cache = Element.cache;
    if (Prototype.Browser.IE && attributes.name) {
      tagName = '<' + tagName + ' name="' + attributes.name + '">';
      delete attributes.name;
      return Element.writeAttribute(document.createElement(tagName), attributes);
    }
    if (!cache[tagName]) cache[tagName] = Element.extend(document.createElement(tagName));
    return Element.writeAttribute(cache[tagName].cloneNode(false), attributes);
  };
  Object.extend(this.Element, element || { });
}).call(window);

Element.cache = { };

Element.Methods = {
  visible: function(element) {
    return $(element).style.display != 'none';
  },

  toggle: function(element) {
    element = $(element);
    Element[Element.visible(element) ? 'hide' : 'show'](element);
    return element;
  },

  hide: function(element) {
    $(element).style.display = 'none';
    return element;
  },

  show: function(element) {
    $(element).style.display = '';
    return element;
  },

  remove: function(element) {
    element = $(element);
    element.parentNode.removeChild(element);
    return element;
  },

  update: function(element, content) {
    element = $(element);
    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) return element.update().insert(content);
    content = Object.toHTML(content);
    element.innerHTML = content.stripScripts();
    content.evalScripts.bind(content).defer();
    return element;
  },

  replace: function(element, content) {
    element = $(element);
    if (content && content.toElement) content = content.toElement();
    else if (!Object.isElement(content)) {
      content = Object.toHTML(content);
      var range = element.ownerDocument.createRange();
      range.selectNode(element);
      content.evalScripts.bind(content).defer();
      content = range.createContextualFragment(content.stripScripts());
    }
    element.parentNode.replaceChild(content, element);
    return element;
  },

  insert: function(element, insertions) {
    element = $(element);

    if (Object.isString(insertions) || Object.isNumber(insertions) ||
        Object.isElement(insertions) || (insertions && (insertions.toElement || insertions.toHTML)))
          insertions = {bottom:insertions};

    var content, insert, tagName, childNodes;

    for (var position in insertions) {
      content  = insertions[position];
      position = position.toLowerCase();
      insert = Element._insertionTranslations[position];

      if (content && content.toElement) content = content.toElement();
      if (Object.isElement(content)) {
        insert(element, content);
        continue;
      }

      content = Object.toHTML(content);

      tagName = ((position == 'before' || position == 'after')
        ? element.parentNode : element).tagName.toUpperCase();

      childNodes = Element._getContentFromAnonymousElement(tagName, content.stripScripts());

      if (position == 'top' || position == 'after') childNodes.reverse();
      childNodes.each(insert.curry(element));

      content.evalScripts.bind(content).defer();
    }

    return element;
  },

  wrap: function(element, wrapper, attributes) {
    element = $(element);
    if (Object.isElement(wrapper))
      $(wrapper).writeAttribute(attributes || { });
    else if (Object.isString(wrapper)) wrapper = new Element(wrapper, attributes);
    else wrapper = new Element('div', wrapper);
    if (element.parentNode)
      element.parentNode.replaceChild(wrapper, element);
    wrapper.appendChild(element);
    return wrapper;
  },

  inspect: function(element) {
    element = $(element);
    var result = '<' + element.tagName.toLowerCase();
    $H({'id': 'id', 'className': 'class'}).each(function(pair) {
      var property = pair.first(), attribute = pair.last();
      var value = (element[property] || '').toString();
      if (value) result += ' ' + attribute + '=' + value.inspect(true);
    });
    return result + '>';
  },

  recursivelyCollect: function(element, property) {
    element = $(element);
    var elements = [];
    while (element = element[property])
      if (element.nodeType == 1)
        elements.push(Element.extend(element));
    return elements;
  },

  ancestors: function(element) {
    return $(element).recursivelyCollect('parentNode');
  },

  descendants: function(element) {
    return $(element).select("*");
  },

  firstDescendant: function(element) {
    element = $(element).firstChild;
    while (element && element.nodeType != 1) element = element.nextSibling;
    return $(element);
  },

  immediateDescendants: function(element) {
    if (!(element = $(element).firstChild)) return [];
    while (element && element.nodeType != 1) element = element.nextSibling;
    if (element) return [element].concat($(element).nextSiblings());
    return [];
  },

  previousSiblings: function(element) {
    return $(element).recursivelyCollect('previousSibling');
  },

  nextSiblings: function(element) {
    return $(element).recursivelyCollect('nextSibling');
  },

  siblings: function(element) {
    element = $(element);
    return element.previousSiblings().reverse().concat(element.nextSiblings());
  },

  match: function(element, selector) {
    if (Object.isString(selector))
      selector = new Selector(selector);
    return selector.match($(element));
  },

  up: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(element.parentNode);
    var ancestors = element.ancestors();
    return Object.isNumber(expression) ? ancestors[expression] :
      Selector.findElement(ancestors, expression, index);
  },

  down: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return element.firstDescendant();
    return Object.isNumber(expression) ? element.descendants()[expression] :
      element.select(expression)[index || 0];
  },

  previous: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.previousElementSibling(element));
    var previousSiblings = element.previousSiblings();
    return Object.isNumber(expression) ? previousSiblings[expression] :
      Selector.findElement(previousSiblings, expression, index);
  },

  next: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.nextElementSibling(element));
    var nextSiblings = element.nextSiblings();
    return Object.isNumber(expression) ? nextSiblings[expression] :
      Selector.findElement(nextSiblings, expression, index);
  },

  select: function() {
    var args = $A(arguments), element = $(args.shift());
    return Selector.findChildElements(element, args);
  },

  adjacent: function() {
    var args = $A(arguments), element = $(args.shift());
    return Selector.findChildElements(element.parentNode, args).without(element);
  },

  identify: function(element) {
    element = $(element);
    var id = element.readAttribute('id'), self = arguments.callee;
    if (id) return id;
    do { id = 'anonymous_element_' + self.counter++ } while ($(id));
    element.writeAttribute('id', id);
    return id;
  },

  readAttribute: function(element, name) {
    element = $(element);
    if (Prototype.Browser.IE) {
      var t = Element._attributeTranslations.read;
      if (t.values[name]) return t.values[name](element, name);
      if (t.names[name]) name = t.names[name];
      if (name.include(':')) {
        return (!element.attributes || !element.attributes[name]) ? null :
         element.attributes[name].value;
      }
    }
    return element.getAttribute(name);
  },

  writeAttribute: function(element, name, value) {
    element = $(element);
    var attributes = { }, t = Element._attributeTranslations.write;

    if (typeof name == 'object') attributes = name;
    else attributes[name] = Object.isUndefined(value) ? true : value;

    for (var attr in attributes) {
      name = t.names[attr] || attr;
      value = attributes[attr];
      if (t.values[attr]) name = t.values[attr](element, value);
      if (value === false || value === null)
        element.removeAttribute(name);
      else if (value === true)
        element.setAttribute(name, name);
      else element.setAttribute(name, value);
    }
    return element;
  },

  getHeight: function(element) {
    return $(element).getDimensions().height;
  },

  getWidth: function(element) {
    return $(element).getDimensions().width;
  },

  classNames: function(element) {
    return new Element.ClassNames(element);
  },

  hasClassName: function(element, className) {
    if (!(element = $(element))) return;
    var elementClassName = element.className;
    return (elementClassName.length > 0 && (elementClassName == className ||
      new RegExp("(^|\\s)" + className + "(\\s|$)").test(elementClassName)));
  },

  addClassName: function(element, className) {
    if (!(element = $(element))) return;
    if (!element.hasClassName(className))
      element.className += (element.className ? ' ' : '') + className;
    return element;
  },

  removeClassName: function(element, className) {
    if (!(element = $(element))) return;
    element.className = element.className.replace(
      new RegExp("(^|\\s+)" + className + "(\\s+|$)"), ' ').strip();
    return element;
  },

  toggleClassName: function(element, className) {
    if (!(element = $(element))) return;
    return element[element.hasClassName(className) ?
      'removeClassName' : 'addClassName'](className);
  },

  // removes whitespace-only text node children
  cleanWhitespace: function(element) {
    element = $(element);
    var node = element.firstChild;
    while (node) {
      var nextNode = node.nextSibling;
      if (node.nodeType == 3 && !/\S/.test(node.nodeValue))
        element.removeChild(node);
      node = nextNode;
    }
    return element;
  },

  empty: function(element) {
    return $(element).innerHTML.blank();
  },

  descendantOf: function(element, ancestor) {
    element = $(element), ancestor = $(ancestor);
    var originalAncestor = ancestor;

    if (element.compareDocumentPosition)
      return (element.compareDocumentPosition(ancestor) & 8) === 8;

    if (element.sourceIndex && !Prototype.Browser.Opera) {
      var e = element.sourceIndex, a = ancestor.sourceIndex,
       nextAncestor = ancestor.nextSibling;
      if (!nextAncestor) {
        do { ancestor = ancestor.parentNode; }
        while (!(nextAncestor = ancestor.nextSibling) && ancestor.parentNode);
      }
      if (nextAncestor && nextAncestor.sourceIndex)
       return (e > a && e < nextAncestor.sourceIndex);
    }

    while (element = element.parentNode)
      if (element == originalAncestor) return true;
    return false;
  },

  scrollTo: function(element) {
    element = $(element);
    var pos = element.cumulativeOffset();
    window.scrollTo(pos[0], pos[1]);
    return element;
  },

  getStyle: function(element, style) {
    element = $(element);
    style = style == 'float' ? 'cssFloat' : style.camelize();
    var value = element.style[style];
    if (!value) {
      var css = document.defaultView.getComputedStyle(element, null);
      value = css ? css[style] : null;
    }
    if (style == 'opacity') return value ? parseFloat(value) : 1.0;
    return value == 'auto' ? null : value;
  },

  getOpacity: function(element) {
    return $(element).getStyle('opacity');
  },

  setStyle: function(element, styles) {
    element = $(element);
    var elementStyle = element.style, match;
    if (Object.isString(styles)) {
      element.style.cssText += ';' + styles;
      return styles.include('opacity') ?
        element.setOpacity(styles.match(/opacity:\s*(\d?\.?\d*)/)[1]) : element;
    }
    for (var property in styles)
      if (property == 'opacity') element.setOpacity(styles[property]);
      else
        elementStyle[(property == 'float' || property == 'cssFloat') ?
          (Object.isUndefined(elementStyle.styleFloat) ? 'cssFloat' : 'styleFloat') :
            property] = styles[property];

    return element;
  },

  setOpacity: function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;
    return element;
  },

  getDimensions: function(element) {
    element = $(element);
    var display = $(element).getStyle('display');
    if (display != 'none' && display != null) // Safari bug
      return {width: element.offsetWidth, height: element.offsetHeight};

    // All *Width and *Height properties give 0 on elements with display none,
    // so enable the element temporarily
    var els = element.style;
    var originalVisibility = els.visibility;
    var originalPosition = els.position;
    var originalDisplay = els.display;
    els.visibility = 'hidden';
    els.position = 'absolute';
    els.display = 'block';
    var originalWidth = element.clientWidth;
    var originalHeight = element.clientHeight;
    els.display = originalDisplay;
    els.position = originalPosition;
    els.visibility = originalVisibility;
    return {width: originalWidth, height: originalHeight};
  },

  makePositioned: function(element) {
    element = $(element);
    var pos = Element.getStyle(element, 'position');
    if (pos == 'static' || !pos) {
      element._madePositioned = true;
      element.style.position = 'relative';
      // Opera returns the offset relative to the positioning context, when an
      // element is position relative but top and left have not been defined
      if (window.opera) {
        element.style.top = 0;
        element.style.left = 0;
      }
    }
    return element;
  },

  undoPositioned: function(element) {
    element = $(element);
    if (element._madePositioned) {
      element._madePositioned = undefined;
      element.style.position =
        element.style.top =
        element.style.left =
        element.style.bottom =
        element.style.right = '';
    }
    return element;
  },

  makeClipping: function(element) {
    element = $(element);
    if (element._overflow) return element;
    element._overflow = Element.getStyle(element, 'overflow') || 'auto';
    if (element._overflow !== 'hidden')
      element.style.overflow = 'hidden';
    return element;
  },

  undoClipping: function(element) {
    element = $(element);
    if (!element._overflow) return element;
    element.style.overflow = element._overflow == 'auto' ? '' : element._overflow;
    element._overflow = null;
    return element;
  },

  cumulativeOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  positionedOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
      if (element) {
        if (element.tagName == 'BODY') break;
        var p = Element.getStyle(element, 'position');
        if (p !== 'static') break;
      }
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  absolutize: function(element) {
    element = $(element);
    if (element.getStyle('position') == 'absolute') return;
    // Position.prepare(); // To be done manually by Scripty when it needs it.

    var offsets = element.positionedOffset();
    var top     = offsets[1];
    var left    = offsets[0];
    var width   = element.clientWidth;
    var height  = element.clientHeight;

    element._originalLeft   = left - parseFloat(element.style.left  || 0);
    element._originalTop    = top  - parseFloat(element.style.top || 0);
    element._originalWidth  = element.style.width;
    element._originalHeight = element.style.height;

    element.style.position = 'absolute';
    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.width  = width + 'px';
    element.style.height = height + 'px';
    return element;
  },

  relativize: function(element) {
    element = $(element);
    if (element.getStyle('position') == 'relative') return;
    // Position.prepare(); // To be done manually by Scripty when it needs it.

    element.style.position = 'relative';
    var top  = parseFloat(element.style.top  || 0) - (element._originalTop || 0);
    var left = parseFloat(element.style.left || 0) - (element._originalLeft || 0);

    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.height = element._originalHeight;
    element.style.width  = element._originalWidth;
    return element;
  },

  cumulativeScrollOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.scrollTop  || 0;
      valueL += element.scrollLeft || 0;
      element = element.parentNode;
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  getOffsetParent: function(element) {
    if (element.offsetParent) return $(element.offsetParent);
    if (element == document.body) return $(element);

    while ((element = element.parentNode) && element != document.body)
      if (Element.getStyle(element, 'position') != 'static')
        return $(element);

    return $(document.body);
  },

  viewportOffset: function(forElement) {
    var valueT = 0, valueL = 0;

    var element = forElement;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;

      // Safari fix
      if (element.offsetParent == document.body &&
        Element.getStyle(element, 'position') == 'absolute') break;

    } while (element = element.offsetParent);

    element = forElement;
    do {
      if (!Prototype.Browser.Opera || element.tagName == 'BODY') {
        valueT -= element.scrollTop  || 0;
        valueL -= element.scrollLeft || 0;
      }
    } while (element = element.parentNode);

    return Element._returnOffset(valueL, valueT);
  },

  clonePosition: function(element, source) {
    var options = Object.extend({
      setLeft:    true,
      setTop:     true,
      setWidth:   true,
      setHeight:  true,
      offsetTop:  0,
      offsetLeft: 0
    }, arguments[2] || { });

    // find page position of source
    source = $(source);
    var p = source.viewportOffset();

    // find coordinate system to use
    element = $(element);
    var delta = [0, 0];
    var parent = null;
    // delta [0,0] will do fine with position: fixed elements,
    // position:absolute needs offsetParent deltas
    if (Element.getStyle(element, 'position') == 'absolute') {
      parent = element.getOffsetParent();
      delta = parent.viewportOffset();
    }

    // correct by body offsets (fixes Safari)
    if (parent == document.body) {
      delta[0] -= document.body.offsetLeft;
      delta[1] -= document.body.offsetTop;
    }

    // set position
    if (options.setLeft)   element.style.left  = (p[0] - delta[0] + options.offsetLeft) + 'px';
    if (options.setTop)    element.style.top   = (p[1] - delta[1] + options.offsetTop) + 'px';
    if (options.setWidth)  element.style.width = source.offsetWidth + 'px';
    if (options.setHeight) element.style.height = source.offsetHeight + 'px';
    return element;
  }
};

Element.Methods.identify.counter = 1;

Object.extend(Element.Methods, {
  getElementsBySelector: Element.Methods.select,
  childElements: Element.Methods.immediateDescendants
});

Element._attributeTranslations = {
  write: {
    names: {
      className: 'class',
      htmlFor:   'for'
    },
    values: { }
  }
};

if (Prototype.Browser.Opera) {
  Element.Methods.getStyle = Element.Methods.getStyle.wrap(
    function(proceed, element, style) {
      switch (style) {
        case 'left': case 'top': case 'right': case 'bottom':
          if (proceed(element, 'position') === 'static') return null;
        case 'height': case 'width':
          // returns '0px' for hidden elements; we want it to return null
          if (!Element.visible(element)) return null;

          // returns the border-box dimensions rather than the content-box
          // dimensions, so we subtract padding and borders from the value
          var dim = parseInt(proceed(element, style), 10);

          if (dim !== element['offset' + style.capitalize()])
            return dim + 'px';

          var properties;
          if (style === 'height') {
            properties = ['border-top-width', 'padding-top',
             'padding-bottom', 'border-bottom-width'];
          }
          else {
            properties = ['border-left-width', 'padding-left',
             'padding-right', 'border-right-width'];
          }
          return properties.inject(dim, function(memo, property) {
            var val = proceed(element, property);
            return val === null ? memo : memo - parseInt(val, 10);
          }) + 'px';
        default: return proceed(element, style);
      }
    }
  );

  Element.Methods.readAttribute = Element.Methods.readAttribute.wrap(
    function(proceed, element, attribute) {
      if (attribute === 'title') return element.title;
      return proceed(element, attribute);
    }
  );
}

else if (Prototype.Browser.IE) {
  // IE doesn't report offsets correctly for static elements, so we change them
  // to "relative" to get the values, then change them back.
  Element.Methods.getOffsetParent = Element.Methods.getOffsetParent.wrap(
    function(proceed, element) {
      element = $(element);
      var position = element.getStyle('position');
      if (position !== 'static') return proceed(element);
      element.setStyle({ position: 'relative' });
      var value = proceed(element);
      element.setStyle({ position: position });
      return value;
    }
  );

  $w('positionedOffset viewportOffset').each(function(method) {
    Element.Methods[method] = Element.Methods[method].wrap(
      function(proceed, element) {
        element = $(element);
        var position = element.getStyle('position');
        if (position !== 'static') return proceed(element);
        // Trigger hasLayout on the offset parent so that IE6 reports
        // accurate offsetTop and offsetLeft values for position: fixed.
        var offsetParent = element.getOffsetParent();
        if (offsetParent && offsetParent.getStyle('position') === 'fixed')
          offsetParent.setStyle({ zoom: 1 });
        element.setStyle({ position: 'relative' });
        var value = proceed(element);
        element.setStyle({ position: position });
        return value;
      }
    );
  });

  Element.Methods.getStyle = function(element, style) {
    element = $(element);
    style = (style == 'float' || style == 'cssFloat') ? 'styleFloat' : style.camelize();
    var value = element.style[style];
    if (!value && element.currentStyle) value = element.currentStyle[style];

    if (style == 'opacity') {
      if (value = (element.getStyle('filter') || '').match(/alpha\(opacity=(.*)\)/))
        if (value[1]) return parseFloat(value[1]) / 100;
      return 1.0;
    }

    if (value == 'auto') {
      if ((style == 'width' || style == 'height') && (element.getStyle('display') != 'none'))
        return element['offset' + style.capitalize()] + 'px';
      return null;
    }
    return value;
  };

  Element.Methods.setOpacity = function(element, value) {
    function stripAlpha(filter){
      return filter.replace(/alpha\([^\)]*\)/gi,'');
    }
    element = $(element);
    var currentStyle = element.currentStyle;
    if ((currentStyle && !currentStyle.hasLayout) ||
      (!currentStyle && element.style.zoom == 'normal'))
        element.style.zoom = 1;

    var filter = element.getStyle('filter'), style = element.style;
    if (value == 1 || value === '') {
      (filter = stripAlpha(filter)) ?
        style.filter = filter : style.removeAttribute('filter');
      return element;
    } else if (value < 0.00001) value = 0;
    style.filter = stripAlpha(filter) +
      'alpha(opacity=' + (value * 100) + ')';
    return element;
  };

  Element._attributeTranslations = {
    read: {
      names: {
        'class': 'className',
        'for':   'htmlFor'
      },
      values: {
        _getAttr: function(element, attribute) {
          return element.getAttribute(attribute, 2);
        },
        _getAttrNode: function(element, attribute) {
          var node = element.getAttributeNode(attribute);
          return node ? node.value : "";
        },
        _getEv: function(element, attribute) {
          attribute = element.getAttribute(attribute);
          return attribute ? attribute.toString().slice(23, -2) : null;
        },
        _flag: function(element, attribute) {
          return $(element).hasAttribute(attribute) ? attribute : null;
        },
        style: function(element) {
          return element.style.cssText.toLowerCase();
        },
        title: function(element) {
          return element.title;
        }
      }
    }
  };

  Element._attributeTranslations.write = {
    names: Object.extend({
      cellpadding: 'cellPadding',
      cellspacing: 'cellSpacing'
    }, Element._attributeTranslations.read.names),
    values: {
      checked: function(element, value) {
        element.checked = !!value;
      },

      style: function(element, value) {
        element.style.cssText = value ? value : '';
      }
    }
  };

  Element._attributeTranslations.has = {};

  $w('colSpan rowSpan vAlign dateTime accessKey tabIndex ' +
      'encType maxLength readOnly longDesc').each(function(attr) {
    Element._attributeTranslations.write.names[attr.toLowerCase()] = attr;
    Element._attributeTranslations.has[attr.toLowerCase()] = attr;
  });

  (function(v) {
    Object.extend(v, {
      href:        v._getAttr,
      src:         v._getAttr,
      type:        v._getAttr,
      action:      v._getAttrNode,
      disabled:    v._flag,
      checked:     v._flag,
      readonly:    v._flag,
      multiple:    v._flag,
      onload:      v._getEv,
      onunload:    v._getEv,
      onclick:     v._getEv,
      ondblclick:  v._getEv,
      onmousedown: v._getEv,
      onmouseup:   v._getEv,
      onmouseover: v._getEv,
      onmousemove: v._getEv,
      onmouseout:  v._getEv,
      onfocus:     v._getEv,
      onblur:      v._getEv,
      onkeypress:  v._getEv,
      onkeydown:   v._getEv,
      onkeyup:     v._getEv,
      onsubmit:    v._getEv,
      onreset:     v._getEv,
      onselect:    v._getEv,
      onchange:    v._getEv
    });
  })(Element._attributeTranslations.read.values);
}

else if (Prototype.Browser.Gecko && /rv:1\.8\.0/.test(navigator.userAgent)) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1) ? 0.999999 :
      (value === '') ? '' : (value < 0.00001) ? 0 : value;
    return element;
  };
}

else if (Prototype.Browser.WebKit) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;

    if (value == 1)
      if(element.tagName == 'IMG' && element.width) {
        element.width++; element.width--;
      } else try {
        var n = document.createTextNode(' ');
        element.appendChild(n);
        element.removeChild(n);
      } catch (e) { }

    return element;
  };

  // Safari returns margins on body which is incorrect if the child is absolutely
  // positioned.  For performance reasons, redefine Element#cumulativeOffset for
  // KHTML/WebKit only.
  Element.Methods.cumulativeOffset = function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      if (element.offsetParent == document.body)
        if (Element.getStyle(element, 'position') == 'absolute') break;

      element = element.offsetParent;
    } while (element);

    return Element._returnOffset(valueL, valueT);
  };
}

if (Prototype.Browser.IE || Prototype.Browser.Opera) {
  // IE and Opera are missing .innerHTML support for TABLE-related and SELECT elements
  Element.Methods.update = function(element, content) {
    element = $(element);

    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) return element.update().insert(content);

    content = Object.toHTML(content);
    var tagName = element.tagName.toUpperCase();

    if (tagName in Element._insertionTranslations.tags) {
      $A(element.childNodes).each(function(node) { element.removeChild(node) });
      Element._getContentFromAnonymousElement(tagName, content.stripScripts())
        .each(function(node) { element.appendChild(node) });
    }
    else element.innerHTML = content.stripScripts();

    content.evalScripts.bind(content).defer();
    return element;
  };
}

if ('outerHTML' in document.createElement('div')) {
  Element.Methods.replace = function(element, content) {
    element = $(element);

    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) {
      element.parentNode.replaceChild(content, element);
      return element;
    }

    content = Object.toHTML(content);
    var parent = element.parentNode, tagName = parent.tagName.toUpperCase();

    if (Element._insertionTranslations.tags[tagName]) {
      var nextSibling = element.next();
      var fragments = Element._getContentFromAnonymousElement(tagName, content.stripScripts());
      parent.removeChild(element);
      if (nextSibling)
        fragments.each(function(node) { parent.insertBefore(node, nextSibling) });
      else
        fragments.each(function(node) { parent.appendChild(node) });
    }
    else element.outerHTML = content.stripScripts();

    content.evalScripts.bind(content).defer();
    return element;
  };
}

Element._returnOffset = function(l, t) {
  var result = [l, t];
  result.left = l;
  result.top = t;
  return result;
};

Element._getContentFromAnonymousElement = function(tagName, html) {
  var div = new Element('div'), t = Element._insertionTranslations.tags[tagName];
  if (t) {
    div.innerHTML = t[0] + html + t[1];
    t[2].times(function() { div = div.firstChild });
  } else div.innerHTML = html;
  return $A(div.childNodes);
};

Element._insertionTranslations = {
  before: function(element, node) {
    element.parentNode.insertBefore(node, element);
  },
  top: function(element, node) {
    element.insertBefore(node, element.firstChild);
  },
  bottom: function(element, node) {
    element.appendChild(node);
  },
  after: function(element, node) {
    element.parentNode.insertBefore(node, element.nextSibling);
  },
  tags: {
    TABLE:  ['<table>',                '</table>',                   1],
    TBODY:  ['<table><tbody>',         '</tbody></table>',           2],
    TR:     ['<table><tbody><tr>',     '</tr></tbody></table>',      3],
    TD:     ['<table><tbody><tr><td>', '</td></tr></tbody></table>', 4],
    SELECT: ['<select>',               '</select>',                  1]
  }
};

(function() {
  Object.extend(this.tags, {
    THEAD: this.tags.TBODY,
    TFOOT: this.tags.TBODY,
    TH:    this.tags.TD
  });
}).call(Element._insertionTranslations);

Element.Methods.Simulated = {
  hasAttribute: function(element, attribute) {
    attribute = Element._attributeTranslations.has[attribute] || attribute;
    var node = $(element).getAttributeNode(attribute);
    return node && node.specified;
  }
};

Element.Methods.ByTag = { };

Object.extend(Element, Element.Methods);

if (!Prototype.BrowserFeatures.ElementExtensions &&
    document.createElement('div').__proto__) {
  window.HTMLElement = { };
  window.HTMLElement.prototype = document.createElement('div').__proto__;
  Prototype.BrowserFeatures.ElementExtensions = true;
}

Element.extend = (function() {
  if (Prototype.BrowserFeatures.SpecificElementExtensions)
    return Prototype.K;

  var Methods = { }, ByTag = Element.Methods.ByTag;

  var extend = Object.extend(function(element) {
    if (!element || element._extendedByPrototype ||
        element.nodeType != 1 || element == window) return element;

    var methods = Object.clone(Methods),
      tagName = element.tagName, property, value;

    // extend methods for specific tags
    if (ByTag[tagName]) Object.extend(methods, ByTag[tagName]);

    for (property in methods) {
      value = methods[property];
      if (Object.isFunction(value) && !(property in element))
        element[property] = value.methodize();
    }

    element._extendedByPrototype = Prototype.emptyFunction;
    return element;

  }, {
    refresh: function() {
      // extend methods for all tags (Safari doesn't need this)
      if (!Prototype.BrowserFeatures.ElementExtensions) {
        Object.extend(Methods, Element.Methods);
        Object.extend(Methods, Element.Methods.Simulated);
      }
    }
  });

  extend.refresh();
  return extend;
})();

Element.hasAttribute = function(element, attribute) {
  if (element.hasAttribute) return element.hasAttribute(attribute);
  return Element.Methods.Simulated.hasAttribute(element, attribute);
};

Element.addMethods = function(methods) {
  var F = Prototype.BrowserFeatures, T = Element.Methods.ByTag;

  if (!methods) {
    Object.extend(Form, Form.Methods);
    Object.extend(Form.Element, Form.Element.Methods);
    Object.extend(Element.Methods.ByTag, {
      "FORM":     Object.clone(Form.Methods),
      "INPUT":    Object.clone(Form.Element.Methods),
      "SELECT":   Object.clone(Form.Element.Methods),
      "TEXTAREA": Object.clone(Form.Element.Methods)
    });
  }

  if (arguments.length == 2) {
    var tagName = methods;
    methods = arguments[1];
  }

  if (!tagName) Object.extend(Element.Methods, methods || { });
  else {
    if (Object.isArray(tagName)) tagName.each(extend);
    else extend(tagName);
  }

  function extend(tagName) {
    tagName = tagName.toUpperCase();
    if (!Element.Methods.ByTag[tagName])
      Element.Methods.ByTag[tagName] = { };
    Object.extend(Element.Methods.ByTag[tagName], methods);
  }

  function copy(methods, destination, onlyIfAbsent) {
    onlyIfAbsent = onlyIfAbsent || false;
    for (var property in methods) {
      var value = methods[property];
      if (!Object.isFunction(value)) continue;
      if (!onlyIfAbsent || !(property in destination))
        destination[property] = value.methodize();
    }
  }

  function findDOMClass(tagName) {
    var klass;
    var trans = {
      "OPTGROUP": "OptGroup", "TEXTAREA": "TextArea", "P": "Paragraph",
      "FIELDSET": "FieldSet", "UL": "UList", "OL": "OList", "DL": "DList",
      "DIR": "Directory", "H1": "Heading", "H2": "Heading", "H3": "Heading",
      "H4": "Heading", "H5": "Heading", "H6": "Heading", "Q": "Quote",
      "INS": "Mod", "DEL": "Mod", "A": "Anchor", "IMG": "Image", "CAPTION":
      "TableCaption", "COL": "TableCol", "COLGROUP": "TableCol", "THEAD":
      "TableSection", "TFOOT": "TableSection", "TBODY": "TableSection", "TR":
      "TableRow", "TH": "TableCell", "TD": "TableCell", "FRAMESET":
      "FrameSet", "IFRAME": "IFrame"
    };
    if (trans[tagName]) klass = 'HTML' + trans[tagName] + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName.capitalize() + 'Element';
    if (window[klass]) return window[klass];

    window[klass] = { };
    window[klass].prototype = document.createElement(tagName).__proto__;
    return window[klass];
  }

  if (F.ElementExtensions) {
    copy(Element.Methods, HTMLElement.prototype);
    copy(Element.Methods.Simulated, HTMLElement.prototype, true);
  }

  if (F.SpecificElementExtensions) {
    for (var tag in Element.Methods.ByTag) {
      var klass = findDOMClass(tag);
      if (Object.isUndefined(klass)) continue;
      copy(T[tag], klass.prototype);
    }
  }

  Object.extend(Element, Element.Methods);
  delete Element.ByTag;

  if (Element.extend.refresh) Element.extend.refresh();
  Element.cache = { };
};

document.viewport = {
  getDimensions: function() {
    var dimensions = { };
    var B = Prototype.Browser;
    $w('width height').each(function(d) {
      var D = d.capitalize();
      dimensions[d] = (B.WebKit && !document.evaluate) ? self['inner' + D] :
        (B.Opera) ? document.body['client' + D] : document.documentElement['client' + D];
    });
    return dimensions;
  },

  getWidth: function() {
    return this.getDimensions().width;
  },

  getHeight: function() {
    return this.getDimensions().height;
  },

  getScrollOffsets: function() {
    return Element._returnOffset(
      window.pageXOffset || document.documentElement.scrollLeft || document.body.scrollLeft,
      window.pageYOffset || document.documentElement.scrollTop || document.body.scrollTop);
  }
};
/* Portions of the Selector class are derived from Jack Slocum’s DomQuery,
 * part of YUI-Ext version 0.40, distributed under the terms of an MIT-style
 * license.  Please see http://www.yui-ext.com/ for more information. */

var Selector = Class.create({
  initialize: function(expression) {
    this.expression = expression.strip();
    this.compileMatcher();
  },

  shouldUseXPath: function() {
    if (!Prototype.BrowserFeatures.XPath) return false;

    var e = this.expression;

    // Safari 3 chokes on :*-of-type and :empty
    if (Prototype.Browser.WebKit &&
     (e.include("-of-type") || e.include(":empty")))
      return false;

    // XPath can't do namespaced attributes, nor can it read
    // the "checked" property from DOM nodes
    if ((/(\[[\w-]*?:|:checked)/).test(this.expression))
      return false;

    return true;
  },

  compileMatcher: function() {
    if (this.shouldUseXPath())
      return this.compileXPathMatcher();

    var e = this.expression, ps = Selector.patterns, h = Selector.handlers,
        c = Selector.criteria, le, p, m;

    if (Selector._cache[e]) {
      this.matcher = Selector._cache[e];
      return;
    }

    this.matcher = ["this.matcher = function(root) {",
                    "var r = root, h = Selector.handlers, c = false, n;"];

    while (e && le != e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        p = ps[i];
        if (m = e.match(p)) {
          this.matcher.push(Object.isFunction(c[i]) ? c[i](m) :
    	      new Template(c[i]).evaluate(m));
          e = e.replace(m[0], '');
          break;
        }
      }
    }

    this.matcher.push("return h.unique(n);\n}");
    eval(this.matcher.join('\n'));
    Selector._cache[this.expression] = this.matcher;
  },

  compileXPathMatcher: function() {
    var e = this.expression, ps = Selector.patterns,
        x = Selector.xpath, le, m;

    if (Selector._cache[e]) {
      this.xpath = Selector._cache[e]; return;
    }

    this.matcher = ['.//*'];
    while (e && le != e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        if (m = e.match(ps[i])) {
          this.matcher.push(Object.isFunction(x[i]) ? x[i](m) :
            new Template(x[i]).evaluate(m));
          e = e.replace(m[0], '');
          break;
        }
      }
    }

    this.xpath = this.matcher.join('');
    Selector._cache[this.expression] = this.xpath;
  },

  findElements: function(root) {
    root = root || document;
    if (this.xpath) return document._getElementsByXPath(this.xpath, root);
    return this.matcher(root);
  },

  match: function(element) {
    this.tokens = [];

    var e = this.expression, ps = Selector.patterns, as = Selector.assertions;
    var le, p, m;

    while (e && le !== e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        p = ps[i];
        if (m = e.match(p)) {
          // use the Selector.assertions methods unless the selector
          // is too complex.
          if (as[i]) {
            this.tokens.push([i, Object.clone(m)]);
            e = e.replace(m[0], '');
          } else {
            // reluctantly do a document-wide search
            // and look for a match in the array
            return this.findElements(document).include(element);
          }
        }
      }
    }

    var match = true, name, matches;
    for (var i = 0, token; token = this.tokens[i]; i++) {
      name = token[0], matches = token[1];
      if (!Selector.assertions[name](element, matches)) {
        match = false; break;
      }
    }

    return match;
  },

  toString: function() {
    return this.expression;
  },

  inspect: function() {
    return "#<Selector:" + this.expression.inspect() + ">";
  }
});

Object.extend(Selector, {
  _cache: { },

  xpath: {
    descendant:   "//*",
    child:        "/*",
    adjacent:     "/following-sibling::*[1]",
    laterSibling: '/following-sibling::*',
    tagName:      function(m) {
      if (m[1] == '*') return '';
      return "[local-name()='" + m[1].toLowerCase() +
             "' or local-name()='" + m[1].toUpperCase() + "']";
    },
    className:    "[contains(concat(' ', @class, ' '), ' #{1} ')]",
    id:           "[@id='#{1}']",
    attrPresence: function(m) {
      m[1] = m[1].toLowerCase();
      return new Template("[@#{1}]").evaluate(m);
    },
    attr: function(m) {
      m[1] = m[1].toLowerCase();
      m[3] = m[5] || m[6];
      return new Template(Selector.xpath.operators[m[2]]).evaluate(m);
    },
    pseudo: function(m) {
      var h = Selector.xpath.pseudos[m[1]];
      if (!h) return '';
      if (Object.isFunction(h)) return h(m);
      return new Template(Selector.xpath.pseudos[m[1]]).evaluate(m);
    },
    operators: {
      '=':  "[@#{1}='#{3}']",
      '!=': "[@#{1}!='#{3}']",
      '^=': "[starts-with(@#{1}, '#{3}')]",
      '$=': "[substring(@#{1}, (string-length(@#{1}) - string-length('#{3}') + 1))='#{3}']",
      '*=': "[contains(@#{1}, '#{3}')]",
      '~=': "[contains(concat(' ', @#{1}, ' '), ' #{3} ')]",
      '|=': "[contains(concat('-', @#{1}, '-'), '-#{3}-')]"
    },
    pseudos: {
      'first-child': '[not(preceding-sibling::*)]',
      'last-child':  '[not(following-sibling::*)]',
      'only-child':  '[not(preceding-sibling::* or following-sibling::*)]',
      'empty':       "[count(*) = 0 and (count(text()) = 0 or translate(text(), ' \t\r\n', '') = '')]",
      'checked':     "[@checked]",
      'disabled':    "[@disabled]",
      'enabled':     "[not(@disabled)]",
      'not': function(m) {
        var e = m[6], p = Selector.patterns,
            x = Selector.xpath, le, v;

        var exclusion = [];
        while (e && le != e && (/\S/).test(e)) {
          le = e;
          for (var i in p) {
            if (m = e.match(p[i])) {
              v = Object.isFunction(x[i]) ? x[i](m) : new Template(x[i]).evaluate(m);
              exclusion.push("(" + v.substring(1, v.length - 1) + ")");
              e = e.replace(m[0], '');
              break;
            }
          }
        }
        return "[not(" + exclusion.join(" and ") + ")]";
      },
      'nth-child':      function(m) {
        return Selector.xpath.pseudos.nth("(count(./preceding-sibling::*) + 1) ", m);
      },
      'nth-last-child': function(m) {
        return Selector.xpath.pseudos.nth("(count(./following-sibling::*) + 1) ", m);
      },
      'nth-of-type':    function(m) {
        return Selector.xpath.pseudos.nth("position() ", m);
      },
      'nth-last-of-type': function(m) {
        return Selector.xpath.pseudos.nth("(last() + 1 - position()) ", m);
      },
      'first-of-type':  function(m) {
        m[6] = "1"; return Selector.xpath.pseudos['nth-of-type'](m);
      },
      'last-of-type':   function(m) {
        m[6] = "1"; return Selector.xpath.pseudos['nth-last-of-type'](m);
      },
      'only-of-type':   function(m) {
        var p = Selector.xpath.pseudos; return p['first-of-type'](m) + p['last-of-type'](m);
      },
      nth: function(fragment, m) {
        var mm, formula = m[6], predicate;
        if (formula == 'even') formula = '2n+0';
        if (formula == 'odd')  formula = '2n+1';
        if (mm = formula.match(/^(\d+)$/)) // digit only
          return '[' + fragment + "= " + mm[1] + ']';
        if (mm = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
          if (mm[1] == "-") mm[1] = -1;
          var a = mm[1] ? Number(mm[1]) : 1;
          var b = mm[2] ? Number(mm[2]) : 0;
          predicate = "[((#{fragment} - #{b}) mod #{a} = 0) and " +
          "((#{fragment} - #{b}) div #{a} >= 0)]";
          return new Template(predicate).evaluate({
            fragment: fragment, a: a, b: b });
        }
      }
    }
  },

  criteria: {
    tagName:      'n = h.tagName(n, r, "#{1}", c);      c = false;',
    className:    'n = h.className(n, r, "#{1}", c);    c = false;',
    id:           'n = h.id(n, r, "#{1}", c);           c = false;',
    attrPresence: 'n = h.attrPresence(n, r, "#{1}", c); c = false;',
    attr: function(m) {
      m[3] = (m[5] || m[6]);
      return new Template('n = h.attr(n, r, "#{1}", "#{3}", "#{2}", c); c = false;').evaluate(m);
    },
    pseudo: function(m) {
      if (m[6]) m[6] = m[6].replace(/"/g, '\\"');
      return new Template('n = h.pseudo(n, "#{1}", "#{6}", r, c); c = false;').evaluate(m);
    },
    descendant:   'c = "descendant";',
    child:        'c = "child";',
    adjacent:     'c = "adjacent";',
    laterSibling: 'c = "laterSibling";'
  },

  patterns: {
    // combinators must be listed first
    // (and descendant needs to be last combinator)
    laterSibling: /^\s*~\s*/,
    child:        /^\s*>\s*/,
    adjacent:     /^\s*\+\s*/,
    descendant:   /^\s/,

    // selectors follow
    tagName:      /^\s*(\*|[\w\-]+)(\b|$)?/,
    id:           /^#([\w\-\*]+)(\b|$)/,
    className:    /^\.([\w\-\*]+)(\b|$)/,
    pseudo:
/^:((first|last|nth|nth-last|only)(-child|-of-type)|empty|checked|(en|dis)abled|not)(\((.*?)\))?(\b|$|(?=\s|[:+~>]))/,
    attrPresence: /^\[([\w]+)\]/,
    attr:         /\[((?:[\w-]*:)?[\w-]+)\s*(?:([!^$*~|]?=)\s*((['"])([^\4]*?)\4|([^'"][^\]]*?)))?\]/
  },

  // for Selector.match and Element#match
  assertions: {
    tagName: function(element, matches) {
      return matches[1].toUpperCase() == element.tagName.toUpperCase();
    },

    className: function(element, matches) {
      return Element.hasClassName(element, matches[1]);
    },

    id: function(element, matches) {
      return element.id === matches[1];
    },

    attrPresence: function(element, matches) {
      return Element.hasAttribute(element, matches[1]);
    },

    attr: function(element, matches) {
      var nodeValue = Element.readAttribute(element, matches[1]);
      return nodeValue && Selector.operators[matches[2]](nodeValue, matches[5] || matches[6]);
    }
  },

  handlers: {
    // UTILITY FUNCTIONS
    // joins two collections
    concat: function(a, b) {
      for (var i = 0, node; node = b[i]; i++)
        a.push(node);
      return a;
    },

    // marks an array of nodes for counting
    mark: function(nodes) {
      var _true = Prototype.emptyFunction;
      for (var i = 0, node; node = nodes[i]; i++)
        node._countedByPrototype = _true;
      return nodes;
    },

    unmark: function(nodes) {
      for (var i = 0, node; node = nodes[i]; i++)
        node._countedByPrototype = undefined;
      return nodes;
    },

    // mark each child node with its position (for nth calls)
    // "ofType" flag indicates whether we're indescreen for nth-of-type
    // rather than nth-child
    index: function(parentNode, reverse, ofType) {
      parentNode._countedByPrototype = Prototype.emptyFunction;
      if (reverse) {
        for (var nodes = parentNode.childNodes, i = nodes.length - 1, j = 1; i >= 0; i--) {
          var node = nodes[i];
          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
        }
      } else {
        for (var i = 0, j = 1, nodes = parentNode.childNodes; node = nodes[i]; i++)
          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
      }
    },

    // filters out duplicates and extends all nodes
    unique: function(nodes) {
      if (nodes.length == 0) return nodes;
      var results = [], n;
      for (var i = 0, l = nodes.length; i < l; i++)
        if (!(n = nodes[i])._countedByPrototype) {
          n._countedByPrototype = Prototype.emptyFunction;
          results.push(Element.extend(n));
        }
      return Selector.handlers.unmark(results);
    },

    // COMBINATOR FUNCTIONS
    descendant: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        h.concat(results, node.getElementsByTagName('*'));
      return results;
    },

    child: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        for (var j = 0, child; child = node.childNodes[j]; j++)
          if (child.nodeType == 1 && child.tagName != '!') results.push(child);
      }
      return results;
    },

    adjacent: function(nodes) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        var next = this.nextElementSibling(node);
        if (next) results.push(next);
      }
      return results;
    },

    laterSibling: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        h.concat(results, Element.nextSiblings(node));
      return results;
    },

    nextElementSibling: function(node) {
      while (node = node.nextSibling)
	      if (node.nodeType == 1) return node;
      return null;
    },

    previousElementSibling: function(node) {
      while (node = node.previousSibling)
        if (node.nodeType == 1) return node;
      return null;
    },

    // TOKEN FUNCTIONS
    tagName: function(nodes, root, tagName, combinator) {
      var uTagName = tagName.toUpperCase();
      var results = [], h = Selector.handlers;
      if (nodes) {
        if (combinator) {
          // fastlane for ordinary descendant combinators
          if (combinator == "descendant") {
            for (var i = 0, node; node = nodes[i]; i++)
              h.concat(results, node.getElementsByTagName(tagName));
            return results;
          } else nodes = this[combinator](nodes);
          if (tagName == "*") return nodes;
        }
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.tagName.toUpperCase() === uTagName) results.push(node);
        return results;
      } else return root.getElementsByTagName(tagName);
    },

    id: function(nodes, root, id, combinator) {
      var targetNode = $(id), h = Selector.handlers;
      if (!targetNode) return [];
      if (!nodes && root == document) return [targetNode];
      if (nodes) {
        if (combinator) {
          if (combinator == 'child') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (targetNode.parentNode == node) return [targetNode];
          } else if (combinator == 'descendant') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (Element.descendantOf(targetNode, node)) return [targetNode];
          } else if (combinator == 'adjacent') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (Selector.handlers.previousElementSibling(targetNode) == node)
                return [targetNode];
          } else nodes = h[combinator](nodes);
        }
        for (var i = 0, node; node = nodes[i]; i++)
          if (node == targetNode) return [targetNode];
        return [];
      }
      return (targetNode && Element.descendantOf(targetNode, root)) ? [targetNode] : [];
    },

    className: function(nodes, root, className, combinator) {
      if (nodes && combinator) nodes = this[combinator](nodes);
      return Selector.handlers.byClassName(nodes, root, className);
    },

    byClassName: function(nodes, root, className) {
      if (!nodes) nodes = Selector.handlers.descendant([root]);
      var needle = ' ' + className + ' ';
      for (var i = 0, results = [], node, nodeClassName; node = nodes[i]; i++) {
        nodeClassName = node.className;
        if (nodeClassName.length == 0) continue;
        if (nodeClassName == className || (' ' + nodeClassName + ' ').include(needle))
          results.push(node);
      }
      return results;
    },

    attrPresence: function(nodes, root, attr, combinator) {
      if (!nodes) nodes = root.getElementsByTagName("*");
      if (nodes && combinator) nodes = this[combinator](nodes);
      var results = [];
      for (var i = 0, node; node = nodes[i]; i++)
        if (Element.hasAttribute(node, attr)) results.push(node);
      return results;
    },

    attr: function(nodes, root, attr, value, operator, combinator) {
      if (!nodes) nodes = root.getElementsByTagName("*");
      if (nodes && combinator) nodes = this[combinator](nodes);
      var handler = Selector.operators[operator], results = [];
      for (var i = 0, node; node = nodes[i]; i++) {
        var nodeValue = Element.readAttribute(node, attr);
        if (nodeValue === null) continue;
        if (handler(nodeValue, value)) results.push(node);
      }
      return results;
    },

    pseudo: function(nodes, name, value, root, combinator) {
      if (nodes && combinator) nodes = this[combinator](nodes);
      if (!nodes) nodes = root.getElementsByTagName("*");
      return Selector.pseudos[name](nodes, value, root);
    }
  },

  pseudos: {
    'first-child': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        if (Selector.handlers.previousElementSibling(node)) continue;
          results.push(node);
      }
      return results;
    },
    'last-child': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        if (Selector.handlers.nextElementSibling(node)) continue;
          results.push(node);
      }
      return results;
    },
    'only-child': function(nodes, value, root) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!h.previousElementSibling(node) && !h.nextElementSibling(node))
          results.push(node);
      return results;
    },
    'nth-child':        function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root);
    },
    'nth-last-child':   function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, true);
    },
    'nth-of-type':      function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, false, true);
    },
    'nth-last-of-type': function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, true, true);
    },
    'first-of-type':    function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, "1", root, false, true);
    },
    'last-of-type':     function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, "1", root, true, true);
    },
    'only-of-type':     function(nodes, formula, root) {
      var p = Selector.pseudos;
      return p['last-of-type'](p['first-of-type'](nodes, formula, root), formula, root);
    },

    // handles the an+b logic
    getIndices: function(a, b, total) {
      if (a == 0) return b > 0 ? [b] : [];
      return $R(1, total).inject([], function(memo, i) {
        if (0 == (i - b) % a && (i - b) / a >= 0) memo.push(i);
        return memo;
      });
    },

    // handles nth(-last)-child, nth(-last)-of-type, and (first|last)-of-type
    nth: function(nodes, formula, root, reverse, ofType) {
      if (nodes.length == 0) return [];
      if (formula == 'even') formula = '2n+0';
      if (formula == 'odd')  formula = '2n+1';
      var h = Selector.handlers, results = [], indexed = [], m;
      h.mark(nodes);
      for (var i = 0, node; node = nodes[i]; i++) {
        if (!node.parentNode._countedByPrototype) {
          h.index(node.parentNode, reverse, ofType);
          indexed.push(node.parentNode);
        }
      }
      if (formula.match(/^\d+$/)) { // just a number
        formula = Number(formula);
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.nodeIndex == formula) results.push(node);
      } else if (m = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
        if (m[1] == "-") m[1] = -1;
        var a = m[1] ? Number(m[1]) : 1;
        var b = m[2] ? Number(m[2]) : 0;
        var indices = Selector.pseudos.getIndices(a, b, nodes.length);
        for (var i = 0, node, l = indices.length; node = nodes[i]; i++) {
          for (var j = 0; j < l; j++)
            if (node.nodeIndex == indices[j]) results.push(node);
        }
      }
      h.unmark(nodes);
      h.unmark(indexed);
      return results;
    },

    'empty': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        // IE treats comments as element nodes
        if (node.tagName == '!' || (node.firstChild && !node.innerHTML.match(/^\s*$/))) continue;
        results.push(node);
      }
      return results;
    },

    'not': function(nodes, selector, root) {
      var h = Selector.handlers, selectorType, m;
      var exclusions = new Selector(selector).findElements(root);
      h.mark(exclusions);
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!node._countedByPrototype) results.push(node);
      h.unmark(exclusions);
      return results;
    },

    'enabled': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!node.disabled) results.push(node);
      return results;
    },

    'disabled': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (node.disabled) results.push(node);
      return results;
    },

    'checked': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (node.checked) results.push(node);
      return results;
    }
  },

  operators: {
    '=':  function(nv, v) { return nv == v; },
    '!=': function(nv, v) { return nv != v; },
    '^=': function(nv, v) { return nv.startsWith(v); },
    '$=': function(nv, v) { return nv.endsWith(v); },
    '*=': function(nv, v) { return nv.include(v); },
    '~=': function(nv, v) { return (' ' + nv + ' ').include(' ' + v + ' '); },
    '|=': function(nv, v) { return ('-' + nv.toUpperCase() + '-').include('-' + v.toUpperCase() + '-'); }
  },

  split: function(expression) {
    var expressions = [];
    expression.scan(/(([\w#:.~>+()\s-]+|\*|\[.*?\])+)\s*(,|$)/, function(m) {
      expressions.push(m[1].strip());
    });
    return expressions;
  },

  matchElements: function(elements, expression) {
    var matches = $$(expression), h = Selector.handlers;
    h.mark(matches);
    for (var i = 0, results = [], element; element = elements[i]; i++)
      if (element._countedByPrototype) results.push(element);
    h.unmark(matches);
    return results;
  },

  findElement: function(elements, expression, index) {
    if (Object.isNumber(expression)) {
      index = expression; expression = false;
    }
    return Selector.matchElements(elements, expression || '*')[index || 0];
  },

  findChildElements: function(element, expressions) {
    expressions = Selector.split(expressions.join(','));
    var results = [], h = Selector.handlers;
    for (var i = 0, l = expressions.length, selector; i < l; i++) {
      selector = new Selector(expressions[i].strip());
      h.concat(results, selector.findElements(element));
    }
    return (l > 1) ? h.unique(results) : results;
  }
});

if (Prototype.Browser.IE) {
  Object.extend(Selector.handlers, {
    // IE returns comment nodes on getElementsByTagName("*").
    // Filter them out.
    concat: function(a, b) {
      for (var i = 0, node; node = b[i]; i++)
        if (node.tagName !== "!") a.push(node);
      return a;
    },

    // IE improperly serializes _countedByPrototype in (inner|outer)HTML.
    unmark: function(nodes) {
      for (var i = 0, node; node = nodes[i]; i++)
        node.removeAttribute('_countedByPrototype');
      return nodes;
    }
  });
}

function $$() {
  return Selector.findChildElements(document, $A(arguments));
}
var Form = {
  reset: function(form) {
    $(form).reset();
    return form;
  },

  serializeElements: function(elements, options) {
    if (typeof options != 'object') options = { hash: !!options };
    else if (Object.isUndefined(options.hash)) options.hash = true;
    var key, value, submitted = false, submit = options.submit;

    var data = elements.inject({ }, function(result, element) {
      if (!element.disabled && element.name) {
        key = element.name; value = $(element).getValue();
        if (value != null && (element.type != 'submit' || (!submitted &&
            submit !== false && (!submit || key == submit) && (submitted = true)))) {
          if (key in result) {
            // a key is already present; construct an array of values
            if (!Object.isArray(result[key])) result[key] = [result[key]];
            result[key].push(value);
          }
          else result[key] = value;
        }
      }
      return result;
    });

    return options.hash ? data : Object.toQueryString(data);
  }
};

Form.Methods = {
  serialize: function(form, options) {
    return Form.serializeElements(Form.getElements(form), options);
  },

  getElements: function(form) {
    return $A($(form).getElementsByTagName('*')).inject([],
      function(elements, child) {
        if (Form.Element.Serializers[child.tagName.toLowerCase()])
          elements.push(Element.extend(child));
        return elements;
      }
    );
  },

  getInputs: function(form, typeName, name) {
    form = $(form);
    var inputs = form.getElementsByTagName('input');

    if (!typeName && !name) return $A(inputs).map(Element.extend);

    for (var i = 0, matchingInputs = [], length = inputs.length; i < length; i++) {
      var input = inputs[i];
      if ((typeName && input.type != typeName) || (name && input.name != name))
        continue;
      matchingInputs.push(Element.extend(input));
    }

    return matchingInputs;
  },

  disable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('disable');
    return form;
  },

  enable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('enable');
    return form;
  },

  findFirstElement: function(form) {
    var elements = $(form).getElements().findAll(function(element) {
      return 'hidden' != element.type && !element.disabled;
    });
    var firstByIndex = elements.findAll(function(element) {
      return element.hasAttribute('tabIndex') && element.tabIndex >= 0;
    }).sortBy(function(element) { return element.tabIndex }).first();

    return firstByIndex ? firstByIndex : elements.find(function(element) {
      return ['input', 'select', 'textarea'].include(element.tagName.toLowerCase());
    });
  },

  focusFirstElement: function(form) {
    form = $(form);
    form.findFirstElement().activate();
    return form;
  },

  request: function(form, options) {
    form = $(form), options = Object.clone(options || { });

    var params = options.parameters, action = form.readAttribute('action') || '';
    if (action.blank()) action = window.location.href;
    options.parameters = form.serialize(true);

    if (params) {
      if (Object.isString(params)) params = params.toQueryParams();
      Object.extend(options.parameters, params);
    }

    if (form.hasAttribute('method') && !options.method)
      options.method = form.method;

    return new Ajax.Request(action, options);
  }
};

/*--------------------------------------------------------------------------*/

Form.Element = {
  focus: function(element) {
    $(element).focus();
    return element;
  },

  select: function(element) {
    $(element).select();
    return element;
  }
};

Form.Element.Methods = {
  serialize: function(element) {
    element = $(element);
    if (!element.disabled && element.name) {
      var value = element.getValue();
      if (value != undefined) {
        var pair = { };
        pair[element.name] = value;
        return Object.toQueryString(pair);
      }
    }
    return '';
  },

  getValue: function(element) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    return Form.Element.Serializers[method](element);
  },

  setValue: function(element, value) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    Form.Element.Serializers[method](element, value);
    return element;
  },

  clear: function(element) {
    $(element).value = '';
    return element;
  },

  present: function(element) {
    return $(element).value != '';
  },

  activate: function(element) {
    element = $(element);
    try {
      element.focus();
      if (element.select && (element.tagName.toLowerCase() != 'input' ||
          !['button', 'reset', 'submit'].include(element.type)))
        element.select();
    } catch (e) { }
    return element;
  },

  disable: function(element) {
    element = $(element);
    element.blur();
    element.disabled = true;
    return element;
  },

  enable: function(element) {
    element = $(element);
    element.disabled = false;
    return element;
  }
};

/*--------------------------------------------------------------------------*/

var Field = Form.Element;
var $F = Form.Element.Methods.getValue;

/*--------------------------------------------------------------------------*/

Form.Element.Serializers = {
  input: function(element, value) {
    switch (element.type.toLowerCase()) {
      case 'checkbox':
      case 'radio':
        return Form.Element.Serializers.inputSelector(element, value);
      default:
        return Form.Element.Serializers.textarea(element, value);
    }
  },

  inputSelector: function(element, value) {
    if (Object.isUndefined(value)) return element.checked ? element.value : null;
    else element.checked = !!value;
  },

  textarea: function(element, value) {
    if (Object.isUndefined(value)) return element.value;
    else element.value = value;
  },

  select: function(element, index) {
    if (Object.isUndefined(index))
      return this[element.type == 'select-one' ?
        'selectOne' : 'selectMany'](element);
    else {
      var opt, value, single = !Object.isArray(index);
      for (var i = 0, length = element.length; i < length; i++) {
        opt = element.options[i];
        value = this.optionValue(opt);
        if (single) {
          if (value == index) {
            opt.selected = true;
            return;
          }
        }
        else opt.selected = index.include(value);
      }
    }
  },

  selectOne: function(element) {
    var index = element.selectedIndex;
    return index >= 0 ? this.optionValue(element.options[index]) : null;
  },

  selectMany: function(element) {
    var values, length = element.length;
    if (!length) return null;

    for (var i = 0, values = []; i < length; i++) {
      var opt = element.options[i];
      if (opt.selected) values.push(this.optionValue(opt));
    }
    return values;
  },

  optionValue: function(opt) {
    // extend element because hasAttribute may not be native
    return Element.extend(opt).hasAttribute('value') ? opt.value : opt.text;
  }
};

/*--------------------------------------------------------------------------*/

Abstract.TimedObserver = Class.create(PeriodicalExecuter, {
  initialize: function($super, element, frequency, callback) {
    $super(callback, frequency);
    this.element   = $(element);
    this.lastValue = this.getValue();
  },

  execute: function() {
    var value = this.getValue();
    if (Object.isString(this.lastValue) && Object.isString(value) ?
        this.lastValue != value : String(this.lastValue) != String(value)) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  }
});

Form.Element.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});

/*--------------------------------------------------------------------------*/

Abstract.EventObserver = Class.create({
  initialize: function(element, callback) {
    this.element  = $(element);
    this.callback = callback;

    this.lastValue = this.getValue();
    if (this.element.tagName.toLowerCase() == 'form')
      this.registerFormCallbacks();
    else
      this.registerCallback(this.element);
  },

  onElementEvent: function() {
    var value = this.getValue();
    if (this.lastValue != value) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  },

  registerFormCallbacks: function() {
    Form.getElements(this.element).each(this.registerCallback, this);
  },

  registerCallback: function(element) {
    if (element.type) {
      switch (element.type.toLowerCase()) {
        case 'checkbox':
        case 'radio':
          Event.observe(element, 'click', this.onElementEvent.bind(this));
          break;
        default:
          Event.observe(element, 'change', this.onElementEvent.bind(this));
          break;
      }
    }
  }
});

Form.Element.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});
if (!window.Event) var Event = { };

Object.extend(Event, {
  KEY_BACKSPACE: 8,
  KEY_TAB:       9,
  KEY_RETURN:   13,
  KEY_ESC:      27,
  KEY_LEFT:     37,
  KEY_UP:       38,
  KEY_RIGHT:    39,
  KEY_DOWN:     40,
  KEY_DELETE:   46,
  KEY_HOME:     36,
  KEY_END:      35,
  KEY_PAGEUP:   33,
  KEY_PAGEDOWN: 34,
  KEY_INSERT:   45,

  cache: { },

  relatedTarget: function(event) {
    var element;
    switch(event.type) {
      case 'mouseover': element = event.fromElement; break;
      case 'mouseout':  element = event.toElement;   break;
      default: return null;
    }
    return Element.extend(element);
  }
});

Event.Methods = (function() {
  var isButton;

  if (Prototype.Browser.IE) {
    var buttonMap = { 0: 1, 1: 4, 2: 2 };
    isButton = function(event, code) {
      return event.button == buttonMap[code];
    };

  } else if (Prototype.Browser.WebKit) {
    isButton = function(event, code) {
      switch (code) {
        case 0: return event.which == 1 && !event.metaKey;
        case 1: return event.which == 1 && event.metaKey;
        default: return false;
      }
    };

  } else {
    isButton = function(event, code) {
      return event.which ? (event.which === code + 1) : (event.button === code);
    };
  }

  return {
    isLeftClick:   function(event) { return isButton(event, 0) },
    isMiddleClick: function(event) { return isButton(event, 1) },
    isRightClick:  function(event) { return isButton(event, 2) },

    element: function(event) {
      var node = Event.extend(event).target;
      return Element.extend(node.nodeType == Node.TEXT_NODE ? node.parentNode : node);
    },

    findElement: function(event, expression) {
      var element = Event.element(event);
      if (!expression) return element;
      var elements = [element].concat(element.ancestors());
      return Selector.findElement(elements, expression, 0);
    },

    pointer: function(event) {
      return {
        x: event.pageX || (event.clientX +
          (document.documentElement.scrollLeft || document.body.scrollLeft)),
        y: event.pageY || (event.clientY +
          (document.documentElement.scrollTop || document.body.scrollTop))
      };
    },

    pointerX: function(event) { return Event.pointer(event).x },
    pointerY: function(event) { return Event.pointer(event).y },

    stop: function(event) {
      Event.extend(event);
      event.preventDefault();
      event.stopPropagation();
      event.stopped = true;
    }
  };
})();

Event.extend = (function() {
  var methods = Object.keys(Event.Methods).inject({ }, function(m, name) {
    m[name] = Event.Methods[name].methodize();
    return m;
  });

  if (Prototype.Browser.IE) {
    Object.extend(methods, {
      stopPropagation: function() { this.cancelBubble = true },
      preventDefault:  function() { this.returnValue = false },
      inspect: function() { return "[object Event]" }
    });

    return function(event) {
      if (!event) return false;
      if (event._extendedByPrototype) return event;

      event._extendedByPrototype = Prototype.emptyFunction;
      var pointer = Event.pointer(event);
      Object.extend(event, {
        target: event.srcElement,
        relatedTarget: Event.relatedTarget(event),
        pageX:  pointer.x,
        pageY:  pointer.y
      });
      return Object.extend(event, methods);
    };

  } else {
    Event.prototype = Event.prototype || document.createEvent("HTMLEvents").__proto__;
    Object.extend(Event.prototype, methods);
    return Prototype.K;
  }
})();

Object.extend(Event, (function() {
  var cache = Event.cache;

  function getEventID(element) {
    if (element._prototypeEventID) return element._prototypeEventID[0];
    arguments.callee.id = arguments.callee.id || 1;
    return element._prototypeEventID = [++arguments.callee.id];
  }

  function getDOMEventName(eventName) {
    if (eventName && eventName.include(':')) return "dataavailable";
    return eventName;
  }

  function getCacheForID(id) {
    return cache[id] = cache[id] || { };
  }

  function getWrappersForEventName(id, eventName) {
    var c = getCacheForID(id);
    return c[eventName] = c[eventName] || [];
  }

  function createWrapper(element, eventName, handler) {
    var id = getEventID(element);
    var c = getWrappersForEventName(id, eventName);
    if (c.pluck("handler").include(handler)) return false;

    var wrapper = function(event) {
      if (!Event || !Event.extend ||
        (event.eventName && event.eventName != eventName))
          return false;

      Event.extend(event);
      handler.call(element, event);
    };

    wrapper.handler = handler;
    c.push(wrapper);
    return wrapper;
  }

  function findWrapper(id, eventName, handler) {
    var c = getWrappersForEventName(id, eventName);
    return c.find(function(wrapper) { return wrapper.handler == handler });
  }

  function destroyWrapper(id, eventName, handler) {
    var c = getCacheForID(id);
    if (!c[eventName]) return false;
    c[eventName] = c[eventName].without(findWrapper(id, eventName, handler));
  }

  function destroyCache() {
    for (var id in cache)
      for (var eventName in cache[id])
        cache[id][eventName] = null;
  }

  if (window.attachEvent) {
    window.attachEvent("onunload", destroyCache);
  }

  return {
    observe: function(element, eventName, handler) {
      element = $(element);
      var name = getDOMEventName(eventName);

      var wrapper = createWrapper(element, eventName, handler);
      if (!wrapper) return element;

      if (element.addEventListener) {
        element.addEventListener(name, wrapper, false);
      } else {
        element.attachEvent("on" + name, wrapper);
      }

      return element;
    },

    stopObserving: function(element, eventName, handler) {
      element = $(element);
      var id = getEventID(element), name = getDOMEventName(eventName);

      if (!handler && eventName) {
        getWrappersForEventName(id, eventName).each(function(wrapper) {
          element.stopObserving(eventName, wrapper.handler);
        });
        return element;

      } else if (!eventName) {
        Object.keys(getCacheForID(id)).each(function(eventName) {
          element.stopObserving(eventName);
        });
        return element;
      }

      var wrapper = findWrapper(id, eventName, handler);
      if (!wrapper) return element;

      if (element.removeEventListener) {
        element.removeEventListener(name, wrapper, false);
      } else {
        element.detachEvent("on" + name, wrapper);
      }

      destroyWrapper(id, eventName, handler);

      return element;
    },

    fire: function(element, eventName, memo) {
      element = $(element);
      if (element == document && document.createEvent && !element.dispatchEvent)
        element = document.documentElement;

      var event;
      if (document.createEvent) {
        event = document.createEvent("HTMLEvents");
        event.initEvent("dataavailable", true, true);
      } else {
        event = document.createEventObject();
        event.eventType = "ondataavailable";
      }

      event.eventName = eventName;
      event.memo = memo || { };

      if (document.createEvent) {
        element.dispatchEvent(event);
      } else {
        element.fireEvent(event.eventType, event);
      }

      return Event.extend(event);
    }
  };
})());

Object.extend(Event, Event.Methods);

Element.addMethods({
  fire:          Event.fire,
  observe:       Event.observe,
  stopObserving: Event.stopObserving
});

Object.extend(document, {
  fire:          Element.Methods.fire.methodize(),
  observe:       Element.Methods.observe.methodize(),
  stopObserving: Element.Methods.stopObserving.methodize(),
  loaded:        false
});

(function() {
  /* Support for the DOMContentLoaded event is based on work by Dan Webb,
     Matthias Miller, Dean Edwards and John Resig. */

  var timer;

  function fireContentLoadedEvent() {
    if (document.loaded) return;
    if (timer) window.clearInterval(timer);
    document.fire("dom:loaded");
    document.loaded = true;
  }

  if (document.addEventListener) {
    if (Prototype.Browser.WebKit) {
      timer = window.setInterval(function() {
        if (/loaded|complete/.test(document.readyState))
          fireContentLoadedEvent();
      }, 0);

      Event.observe(window, "load", fireContentLoadedEvent);

    } else {
      document.addEventListener("DOMContentLoaded",
        fireContentLoadedEvent, false);
    }

  } else {
    document.write("<script id=__onDOMContentLoaded defer src=//:><\/script>");
    $("__onDOMContentLoaded").onreadystatechange = function() {
      if (this.readyState == "complete") {
        this.onreadystatechange = null;
        fireContentLoadedEvent();
      }
    };
  }
})();
/*------------------------------- DEPRECATED -------------------------------*/

Hash.toQueryString = Object.toQueryString;

var Toggle = { display: Element.toggle };

Element.Methods.childOf = Element.Methods.descendantOf;

var Insertion = {
  Before: function(element, content) {
    return Element.insert(element, {before:content});
  },

  Top: function(element, content) {
    return Element.insert(element, {top:content});
  },

  Bottom: function(element, content) {
    return Element.insert(element, {bottom:content});
  },

  After: function(element, content) {
    return Element.insert(element, {after:content});
  }
};

var $continue = new Error('"throw $continue" is deprecated, use "return" instead');

// This should be moved to script.aculo.us; notice the deprecated methods
// further below, that map to the newer Element methods.
var Position = {
  // set to true if needed, warning: firefox performance problems
  // NOT neeeded for page scrolling, only if draggable contained in
  // scrollable elements
  includeScrollOffsets: false,

  // must be called before calling withinIncludingScrolloffset, every time the
  // page is scrolled
  prepare: function() {
    this.deltaX =  window.pageXOffset
                || document.documentElement.scrollLeft
                || document.body.scrollLeft
                || 0;
    this.deltaY =  window.pageYOffset
                || document.documentElement.scrollTop
                || document.body.scrollTop
                || 0;
  },

  // caches x/y coordinate pair to use with overlap
  within: function(element, x, y) {
    if (this.includeScrollOffsets)
      return this.withinIncludingScrolloffsets(element, x, y);
    this.xcomp = x;
    this.ycomp = y;
    this.offset = Element.cumulativeOffset(element);

    return (y >= this.offset[1] &&
            y <  this.offset[1] + element.offsetHeight &&
            x >= this.offset[0] &&
            x <  this.offset[0] + element.offsetWidth);
  },

  withinIncludingScrolloffsets: function(element, x, y) {
    var offsetcache = Element.cumulativeScrollOffset(element);

    this.xcomp = x + offsetcache[0] - this.deltaX;
    this.ycomp = y + offsetcache[1] - this.deltaY;
    this.offset = Element.cumulativeOffset(element);

    return (this.ycomp >= this.offset[1] &&
            this.ycomp <  this.offset[1] + element.offsetHeight &&
            this.xcomp >= this.offset[0] &&
            this.xcomp <  this.offset[0] + element.offsetWidth);
  },

  // within must be called directly before
  overlap: function(mode, element) {
    if (!mode) return 0;
    if (mode == 'vertical')
      return ((this.offset[1] + element.offsetHeight) - this.ycomp) /
        element.offsetHeight;
    if (mode == 'horizontal')
      return ((this.offset[0] + element.offsetWidth) - this.xcomp) /
        element.offsetWidth;
  },

  // Deprecation layer -- use newer Element methods now (1.5.2).

  cumulativeOffset: Element.Methods.cumulativeOffset,

  positionedOffset: Element.Methods.positionedOffset,

  absolutize: function(element) {
    Position.prepare();
    return Element.absolutize(element);
  },

  relativize: function(element) {
    Position.prepare();
    return Element.relativize(element);
  },

  realOffset: Element.Methods.cumulativeScrollOffset,

  offsetParent: Element.Methods.getOffsetParent,

  page: Element.Methods.viewportOffset,

  clone: function(source, target, options) {
    options = options || { };
    return Element.clonePosition(target, source, options);
  }
};

/*--------------------------------------------------------------------------*/

if (!document.getElementsByClassName) document.getElementsByClassName = function(instanceMethods){
  function iter(name) {
    return name.blank() ? null : "[contains(concat(' ', @class, ' '), ' " + name + " ')]";
  }

  instanceMethods.getElementsByClassName = Prototype.BrowserFeatures.XPath ?
  function(element, className) {
    className = className.toString().strip();
    var cond = /\s/.test(className) ? $w(className).map(iter).join('') : iter(className);
    return cond ? document._getElementsByXPath('.//*' + cond, element) : [];
  } : function(element, className) {
    className = className.toString().strip();
    var elements = [], classNames = (/\s/.test(className) ? $w(className) : null);
    if (!classNames && !className) return elements;

    var nodes = $(element).getElementsByTagName('*');
    className = ' ' + className + ' ';

    for (var i = 0, child, cn; child = nodes[i]; i++) {
      if (child.className && (cn = ' ' + child.className + ' ') && (cn.include(className) ||
          (classNames && classNames.all(function(name) {
            return !name.toString().blank() && cn.include(' ' + name + ' ');
          }))))
        elements.push(Element.extend(child));
    }
    return elements;
  };

  return function(className, parentElement) {
    return $(parentElement || document.body).getElementsByClassName(className);
  };
}(Element.Methods);

/*--------------------------------------------------------------------------*/

Element.ClassNames = Class.create();
Element.ClassNames.prototype = {
  initialize: function(element) {
    this.element = $(element);
  },

  _each: function(iterator) {
    this.element.className.split(/\s+/).select(function(name) {
      return name.length > 0;
    })._each(iterator);
  },

  set: function(className) {
    this.element.className = className;
  },

  add: function(classNameToAdd) {
    if (this.include(classNameToAdd)) return;
    this.set($A(this).concat(classNameToAdd).join(' '));
  },

  remove: function(classNameToRemove) {
    if (!this.include(classNameToRemove)) return;
    this.set($A(this).without(classNameToRemove).join(' '));
  },

  toString: function() {
    return $A(this).join(' ');
  }
};

Object.extend(Element.ClassNames.prototype, Enumerable);

/*--------------------------------------------------------------------------*/

Element.addMethods();// script.aculo.us effects.js v1.8.1, Thu Jan 03 22:07:12 -0500 2008

// Copyright (c) 2005-2007 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
// Contributors:
//  Justin Palmer (http://encytemedia.com/)
//  Mark Pilgrim (http://diveintomark.org/)
//  Martin Bialasinki
// 
// script.aculo.us is freely distributable under the terms of an MIT-style license.
// For details, see the script.aculo.us web site: http://script.aculo.us/ 

// converts rgb() and #xxx to #xxxxxx format,  
// returns self (or first argument) if not convertable  
String.prototype.parseColor = function() {  
  var color = '#';
  if (this.slice(0,4) == 'rgb(') {  
    var cols = this.slice(4,this.length-1).split(',');  
    var i=0; do { color += parseInt(cols[i]).toColorPart() } while (++i<3);  
  } else {  
    if (this.slice(0,1) == '#') {  
      if (this.length==4) for(var i=1;i<4;i++) color += (this.charAt(i) + this.charAt(i)).toLowerCase();  
      if (this.length==7) color = this.toLowerCase();  
    }  
  }  
  return (color.length==7 ? color : (arguments[0] || this));  
};

/*--------------------------------------------------------------------------*/

Element.collectTextNodes = function(element) {  
  return $A($(element).childNodes).collect( function(node) {
    return (node.nodeType==3 ? node.nodeValue : 
      (node.hasChildNodes() ? Element.collectTextNodes(node) : ''));
  }).flatten().join('');
};

Element.collectTextNodesIgnoreClass = function(element, className) {  
  return $A($(element).childNodes).collect( function(node) {
    return (node.nodeType==3 ? node.nodeValue : 
      ((node.hasChildNodes() && !Element.hasClassName(node,className)) ? 
        Element.collectTextNodesIgnoreClass(node, className) : ''));
  }).flatten().join('');
};

Element.setContentZoom = function(element, percent) {
  element = $(element);  
  element.setStyle({fontSize: (percent/100) + 'em'});   
  if (Prototype.Browser.WebKit) window.scrollBy(0,0);
  return element;
};

Element.getInlineOpacity = function(element){
  return $(element).style.opacity || '';
};

Element.forceRerendering = function(element) {
  try {
    element = $(element);
    var n = document.createTextNode(' ');
    element.appendChild(n);
    element.removeChild(n);
  } catch(e) { }
};

/*--------------------------------------------------------------------------*/

var Effect = {
  _elementDoesNotExistError: {
    name: 'ElementDoesNotExistError',
    message: 'The specified DOM element does not exist, but is required for this effect to operate'
  },
  Transitions: {
    linear: Prototype.K,
    sinoidal: function(pos) {
      return (-Math.cos(pos*Math.PI)/2) + 0.5;
    },
    reverse: function(pos) {
      return 1-pos;
    },
    flicker: function(pos) {
      var pos = ((-Math.cos(pos*Math.PI)/4) + 0.75) + Math.random()/4;
      return pos > 1 ? 1 : pos;
    },
    wobble: function(pos) {
      return (-Math.cos(pos*Math.PI*(9*pos))/2) + 0.5;
    },
    pulse: function(pos, pulses) { 
      pulses = pulses || 5; 
      return (
        ((pos % (1/pulses)) * pulses).round() == 0 ? 
              ((pos * pulses * 2) - (pos * pulses * 2).floor()) : 
          1 - ((pos * pulses * 2) - (pos * pulses * 2).floor())
        );
    },
    spring: function(pos) { 
      return 1 - (Math.cos(pos * 4.5 * Math.PI) * Math.exp(-pos * 6)); 
    },
    none: function(pos) {
      return 0;
    },
    full: function(pos) {
      return 1;
    }
  },
  DefaultOptions: {
    duration:   1.0,   // seconds
    fps:        100,   // 100= assume 66fps max.
    sync:       false, // true for combining
    from:       0.0,
    to:         1.0,
    delay:      0.0,
    queue:      'parallel'
  },
  tagifyText: function(element) {
    var tagifyStyle = 'position:relative';
    if (Prototype.Browser.IE) tagifyStyle += ';zoom:1';
    
    element = $(element);
    $A(element.childNodes).each( function(child) {
      if (child.nodeType==3) {
        child.nodeValue.toArray().each( function(character) {
          element.insertBefore(
            new Element('span', {style: tagifyStyle}).update(
              character == ' ' ? String.fromCharCode(160) : character), 
              child);
        });
        Element.remove(child);
      }
    });
  },
  multiple: function(element, effect) {
    var elements;
    if (((typeof element == 'object') || 
        Object.isFunction(element)) && 
       (element.length))
      elements = element;
    else
      elements = $(element).childNodes;
      
    var options = Object.extend({
      speed: 0.1,
      delay: 0.0
    }, arguments[2] || { });
    var masterDelay = options.delay;

    $A(elements).each( function(element, index) {
      new effect(element, Object.extend(options, { delay: index * options.speed + masterDelay }));
    });
  },
  PAIRS: {
    'slide':  ['SlideDown','SlideUp'],
    'blind':  ['BlindDown','BlindUp'],
    'appear': ['Appear','Fade']
  },
  toggle: function(element, effect) {
    element = $(element);
    effect = (effect || 'appear').toLowerCase();
    var options = Object.extend({
      queue: { position:'end', scope:(element.id || 'global'), limit: 1 }
    }, arguments[2] || { });
    Effect[element.visible() ? 
      Effect.PAIRS[effect][1] : Effect.PAIRS[effect][0]](element, options);
  }
};

Effect.DefaultOptions.transition = Effect.Transitions.sinoidal;

/* ------------- core effects ------------- */

Effect.ScopedQueue = Class.create(Enumerable, {
  initialize: function() {
    this.effects  = [];
    this.interval = null;    
  },
  _each: function(iterator) {
    this.effects._each(iterator);
  },
  add: function(effect) {
    var timestamp = new Date().getTime();
    
    var position = Object.isString(effect.options.queue) ? 
      effect.options.queue : effect.options.queue.position;
    
    switch(position) {
      case 'front':
        // move unstarted effects after this effect  
        this.effects.findAll(function(e){ return e.state=='idle' }).each( function(e) {
            e.startOn  += effect.finishOn;
            e.finishOn += effect.finishOn;
          });
        break;
      case 'with-last':
        timestamp = this.effects.pluck('startOn').max() || timestamp;
        break;
      case 'end':
        // start effect after last queued effect has finished
        timestamp = this.effects.pluck('finishOn').max() || timestamp;
        break;
    }
    
    effect.startOn  += timestamp;
    effect.finishOn += timestamp;

    if (!effect.options.queue.limit || (this.effects.length < effect.options.queue.limit))
      this.effects.push(effect);
    
    if (!this.interval)
      this.interval = setInterval(this.loop.bind(this), 15);
  },
  remove: function(effect) {
    this.effects = this.effects.reject(function(e) { return e==effect });
    if (this.effects.length == 0) {
      clearInterval(this.interval);
      this.interval = null;
    }
  },
  loop: function() {
    var timePos = new Date().getTime();
    for(var i=0, len=this.effects.length;i<len;i++) 
      this.effects[i] && this.effects[i].loop(timePos);
  }
});

Effect.Queues = {
  instances: $H(),
  get: function(queueName) {
    if (!Object.isString(queueName)) return queueName;
    
    return this.instances.get(queueName) ||
      this.instances.set(queueName, new Effect.ScopedQueue());
  }
};
Effect.Queue = Effect.Queues.get('global');

Effect.Base = Class.create({
  position: null,
  start: function(options) {
    function codeForEvent(options,eventName){
      return (
        (options[eventName+'Internal'] ? 'this.options.'+eventName+'Internal(this);' : '') +
        (options[eventName] ? 'this.options.'+eventName+'(this);' : '')
      );
    }
    if (options && options.transition === false) options.transition = Effect.Transitions.linear;
    this.options      = Object.extend(Object.extend({ },Effect.DefaultOptions), options || { });
    this.currentFrame = 0;
    this.state        = 'idle';
    this.startOn      = this.options.delay*1000;
    this.finishOn     = this.startOn+(this.options.duration*1000);
    this.fromToDelta  = this.options.to-this.options.from;
    this.totalTime    = this.finishOn-this.startOn;
    this.totalFrames  = this.options.fps*this.options.duration;
    
    eval('this.render = function(pos){ '+
      'if (this.state=="idle"){this.state="running";'+
      codeForEvent(this.options,'beforeSetup')+
      (this.setup ? 'this.setup();':'')+ 
      codeForEvent(this.options,'afterSetup')+
      '};if (this.state=="running"){'+
      'pos=this.options.transition(pos)*'+this.fromToDelta+'+'+this.options.from+';'+
      'this.position=pos;'+
      codeForEvent(this.options,'beforeUpdate')+
      (this.update ? 'this.update(pos);':'')+
      codeForEvent(this.options,'afterUpdate')+
      '}}');
    
    this.event('beforeStart');
    if (!this.options.sync)
      Effect.Queues.get(Object.isString(this.options.queue) ? 
        'global' : this.options.queue.scope).add(this);
  },
  loop: function(timePos) {
    if (timePos >= this.startOn) {
      if (timePos >= this.finishOn) {
        this.render(1.0);
        this.cancel();
        this.event('beforeFinish');
        if (this.finish) this.finish(); 
        this.event('afterFinish');
        return;  
      }
      var pos   = (timePos - this.startOn) / this.totalTime,
          frame = (pos * this.totalFrames).round();
      if (frame > this.currentFrame) {
        this.render(pos);
        this.currentFrame = frame;
      }
    }
  },
  cancel: function() {
    if (!this.options.sync)
      Effect.Queues.get(Object.isString(this.options.queue) ? 
        'global' : this.options.queue.scope).remove(this);
    this.state = 'finished';
  },
  event: function(eventName) {
    if (this.options[eventName + 'Internal']) this.options[eventName + 'Internal'](this);
    if (this.options[eventName]) this.options[eventName](this);
  },
  inspect: function() {
    var data = $H();
    for(property in this)
      if (!Object.isFunction(this[property])) data.set(property, this[property]);
    return '#<Effect:' + data.inspect() + ',options:' + $H(this.options).inspect() + '>';
  }
});

Effect.Parallel = Class.create(Effect.Base, {
  initialize: function(effects) {
    this.effects = effects || [];
    this.start(arguments[1]);
  },
  update: function(position) {
    this.effects.invoke('render', position);
  },
  finish: function(position) {
    this.effects.each( function(effect) {
      effect.render(1.0);
      effect.cancel();
      effect.event('beforeFinish');
      if (effect.finish) effect.finish(position);
      effect.event('afterFinish');
    });
  }
});

Effect.Tween = Class.create(Effect.Base, {
  initialize: function(object, from, to) {
    object = Object.isString(object) ? $(object) : object;
    var args = $A(arguments), method = args.last(), 
      options = args.length == 5 ? args[3] : null;
    this.method = Object.isFunction(method) ? method.bind(object) :
      Object.isFunction(object[method]) ? object[method].bind(object) : 
      function(value) { object[method] = value };
    this.start(Object.extend({ from: from, to: to }, options || { }));
  },
  update: function(position) {
    this.method(position);
  }
});

Effect.Event = Class.create(Effect.Base, {
  initialize: function() {
    this.start(Object.extend({ duration: 0 }, arguments[0] || { }));
  },
  update: Prototype.emptyFunction
});

Effect.Opacity = Class.create(Effect.Base, {
  initialize: function(element) {
    this.element = $(element);
    if (!this.element) throw(Effect._elementDoesNotExistError);
    // make this work on IE on elements without 'layout'
    if (Prototype.Browser.IE && (!this.element.currentStyle.hasLayout))
      this.element.setStyle({zoom: 1});
    var options = Object.extend({
      from: this.element.getOpacity() || 0.0,
      to:   1.0
    }, arguments[1] || { });
    this.start(options);
  },
  update: function(position) {
    this.element.setOpacity(position);
  }
});

Effect.Move = Class.create(Effect.Base, {
  initialize: function(element) {
    this.element = $(element);
    if (!this.element) throw(Effect._elementDoesNotExistError);
    var options = Object.extend({
      x:    0,
      y:    0,
      mode: 'relative'
    }, arguments[1] || { });
    this.start(options);
  },
  setup: function() {
    this.element.makePositioned();
    this.originalLeft = parseFloat(this.element.getStyle('left') || '0');
    this.originalTop  = parseFloat(this.element.getStyle('top')  || '0');
    if (this.options.mode == 'absolute') {
      this.options.x = this.options.x - this.originalLeft;
      this.options.y = this.options.y - this.originalTop;
    }
  },
  update: function(position) {
    this.element.setStyle({
      left: (this.options.x  * position + this.originalLeft).round() + 'px',
      top:  (this.options.y  * position + this.originalTop).round()  + 'px'
    });
  }
});

// for backwards compatibility
Effect.MoveBy = function(element, toTop, toLeft) {
  return new Effect.Move(element, 
    Object.extend({ x: toLeft, y: toTop }, arguments[3] || { }));
};

Effect.Scale = Class.create(Effect.Base, {
  initialize: function(element, percent) {
    this.element = $(element);
    if (!this.element) throw(Effect._elementDoesNotExistError);
    var options = Object.extend({
      scaleX: true,
      scaleY: true,
      scaleContent: true,
      scaleFromCenter: false,
      scaleMode: 'box',        // 'box' or 'contents' or { } with provided values
      scaleFrom: 100.0,
      scaleTo:   percent
    }, arguments[2] || { });
    this.start(options);
  },
  setup: function() {
    this.restoreAfterFinish = this.options.restoreAfterFinish || false;
    this.elementPositioning = this.element.getStyle('position');
    
    this.originalStyle = { };
    ['top','left','width','height','fontSize'].each( function(k) {
      this.originalStyle[k] = this.element.style[k];
    }.bind(this));
      
    this.originalTop  = this.element.offsetTop;
    this.originalLeft = this.element.offsetLeft;
    
    var fontSize = this.element.getStyle('font-size') || '100%';
    ['em','px','%','pt'].each( function(fontSizeType) {
      if (fontSize.indexOf(fontSizeType)>0) {
        this.fontSize     = parseFloat(fontSize);
        this.fontSizeType = fontSizeType;
      }
    }.bind(this));
    
    this.factor = (this.options.scaleTo - this.options.scaleFrom)/100;
    
    this.dims = null;
    if (this.options.scaleMode=='box')
      this.dims = [this.element.offsetHeight, this.element.offsetWidth];
    if (/^content/.test(this.options.scaleMode))
      this.dims = [this.element.scrollHeight, this.element.scrollWidth];
    if (!this.dims)
      this.dims = [this.options.scaleMode.originalHeight,
                   this.options.scaleMode.originalWidth];
  },
  update: function(position) {
    var currentScale = (this.options.scaleFrom/100.0) + (this.factor * position);
    if (this.options.scaleContent && this.fontSize)
      this.element.setStyle({fontSize: this.fontSize * currentScale + this.fontSizeType });
    this.setDimensions(this.dims[0] * currentScale, this.dims[1] * currentScale);
  },
  finish: function(position) {
    if (this.restoreAfterFinish) this.element.setStyle(this.originalStyle);
  },
  setDimensions: function(height, width) {
    var d = { };
    if (this.options.scaleX) d.width = width.round() + 'px';
    if (this.options.scaleY) d.height = height.round() + 'px';
    if (this.options.scaleFromCenter) {
      var topd  = (height - this.dims[0])/2;
      var leftd = (width  - this.dims[1])/2;
      if (this.elementPositioning == 'absolute') {
        if (this.options.scaleY) d.top = this.originalTop-topd + 'px';
        if (this.options.scaleX) d.left = this.originalLeft-leftd + 'px';
      } else {
        if (this.options.scaleY) d.top = -topd + 'px';
        if (this.options.scaleX) d.left = -leftd + 'px';
      }
    }
    this.element.setStyle(d);
  }
});

Effect.Highlight = Class.create(Effect.Base, {
  initialize: function(element) {
    this.element = $(element);
    if (!this.element) throw(Effect._elementDoesNotExistError);
    var options = Object.extend({ startcolor: '#ffff99' }, arguments[1] || { });
    this.start(options);
  },
  setup: function() {
    // Prevent executing on elements not in the layout flow
    if (this.element.getStyle('display')=='none') { this.cancel(); return; }
    // Disable background image during the effect
    this.oldStyle = { };
    if (!this.options.keepBackgroundImage) {
      this.oldStyle.backgroundImage = this.element.getStyle('background-image');
      this.element.setStyle({backgroundImage: 'none'});
    }
    if (!this.options.endcolor)
      this.options.endcolor = this.element.getStyle('background-color').parseColor('#ffffff');
    if (!this.options.restorecolor)
      this.options.restorecolor = this.element.getStyle('background-color');
    // init color calculations
    this._base  = $R(0,2).map(function(i){ return parseInt(this.options.startcolor.slice(i*2+1,i*2+3),16) }.bind(this));
    this._delta = $R(0,2).map(function(i){ return parseInt(this.options.endcolor.slice(i*2+1,i*2+3),16)-this._base[i] }.bind(this));
  },
  update: function(position) {
    this.element.setStyle({backgroundColor: $R(0,2).inject('#',function(m,v,i){
      return m+((this._base[i]+(this._delta[i]*position)).round().toColorPart()); }.bind(this)) });
  },
  finish: function() {
    this.element.setStyle(Object.extend(this.oldStyle, {
      backgroundColor: this.options.restorecolor
    }));
  }
});

Effect.ScrollTo = function(element) {
  var options = arguments[1] || { },
    scrollOffsets = document.viewport.getScrollOffsets(),
    elementOffsets = $(element).cumulativeOffset(),
    max = (window.height || document.body.scrollHeight) - document.viewport.getHeight();  

  if (options.offset) elementOffsets[1] += options.offset;

  return new Effect.Tween(null,
    scrollOffsets.top,
    elementOffsets[1] > max ? max : elementOffsets[1],
    options,
    function(p){ scrollTo(scrollOffsets.left, p.round()) }
  );
};

/* ------------- combination effects ------------- */

Effect.Fade = function(element) {
  element = $(element);
  var oldOpacity = element.getInlineOpacity();
  var options = Object.extend({
    from: element.getOpacity() || 1.0,
    to:   0.0,
    afterFinishInternal: function(effect) { 
      if (effect.options.to!=0) return;
      effect.element.hide().setStyle({opacity: oldOpacity}); 
    }
  }, arguments[1] || { });
  return new Effect.Opacity(element,options);
};

Effect.Appear = function(element) {
  element = $(element);
  var options = Object.extend({
  from: (element.getStyle('display') == 'none' ? 0.0 : element.getOpacity() || 0.0),
  to:   1.0,
  // force Safari to render floated elements properly
  afterFinishInternal: function(effect) {
    effect.element.forceRerendering();
  },
  beforeSetup: function(effect) {
    effect.element.setOpacity(effect.options.from).show(); 
  }}, arguments[1] || { });
  return new Effect.Opacity(element,options);
};

Effect.Puff = function(element) {
  element = $(element);
  var oldStyle = { 
    opacity: element.getInlineOpacity(), 
    position: element.getStyle('position'),
    top:  element.style.top,
    left: element.style.left,
    width: element.style.width,
    height: element.style.height
  };
  return new Effect.Parallel(
   [ new Effect.Scale(element, 200, 
      { sync: true, scaleFromCenter: true, scaleContent: true, restoreAfterFinish: true }), 
     new Effect.Opacity(element, { sync: true, to: 0.0 } ) ], 
     Object.extend({ duration: 1.0, 
      beforeSetupInternal: function(effect) {
        Position.absolutize(effect.effects[0].element)
      },
      afterFinishInternal: function(effect) {
         effect.effects[0].element.hide().setStyle(oldStyle); }
     }, arguments[1] || { })
   );
};

Effect.BlindUp = function(element) {
  element = $(element);
  element.makeClipping();
  return new Effect.Scale(element, 0,
    Object.extend({ scaleContent: false, 
      scaleX: false, 
      restoreAfterFinish: true,
      afterFinishInternal: function(effect) {
        effect.element.hide().undoClipping();
      } 
    }, arguments[1] || { })
  );
};

Effect.BlindDown = function(element) {
  element = $(element);
  var elementDimensions = element.getDimensions();
  return new Effect.Scale(element, 100, Object.extend({ 
    scaleContent: false, 
    scaleX: false,
    scaleFrom: 0,
    scaleMode: {originalHeight: elementDimensions.height, originalWidth: elementDimensions.width},
    restoreAfterFinish: true,
    afterSetup: function(effect) {
      effect.element.makeClipping().setStyle({height: '0px'}).show(); 
    },  
    afterFinishInternal: function(effect) {
      effect.element.undoClipping();
    }
  }, arguments[1] || { }));
};

Effect.SwitchOff = function(element) {
  element = $(element);
  var oldOpacity = element.getInlineOpacity();
  return new Effect.Appear(element, Object.extend({
    duration: 0.4,
    from: 0,
    transition: Effect.Transitions.flicker,
    afterFinishInternal: function(effect) {
      new Effect.Scale(effect.element, 1, { 
        duration: 0.3, scaleFromCenter: true,
        scaleX: false, scaleContent: false, restoreAfterFinish: true,
        beforeSetup: function(effect) { 
          effect.element.makePositioned().makeClipping();
        },
        afterFinishInternal: function(effect) {
          effect.element.hide().undoClipping().undoPositioned().setStyle({opacity: oldOpacity});
        }
      })
    }
  }, arguments[1] || { }));
};

Effect.DropOut = function(element) {
  element = $(element);
  var oldStyle = {
    top: element.getStyle('top'),
    left: element.getStyle('left'),
    opacity: element.getInlineOpacity() };
  return new Effect.Parallel(
    [ new Effect.Move(element, {x: 0, y: 100, sync: true }), 
      new Effect.Opacity(element, { sync: true, to: 0.0 }) ],
    Object.extend(
      { duration: 0.5,
        beforeSetup: function(effect) {
          effect.effects[0].element.makePositioned(); 
        },
        afterFinishInternal: function(effect) {
          effect.effects[0].element.hide().undoPositioned().setStyle(oldStyle);
        } 
      }, arguments[1] || { }));
};

Effect.Shake = function(element) {
  element = $(element);
  var options = Object.extend({
    distance: 20,
    duration: 0.5
  }, arguments[1] || {});
  var distance = parseFloat(options.distance);
  var split = parseFloat(options.duration) / 10.0;
  var oldStyle = {
    top: element.getStyle('top'),
    left: element.getStyle('left') };
    return new Effect.Move(element,
      { x:  distance, y: 0, duration: split, afterFinishInternal: function(effect) {
    new Effect.Move(effect.element,
      { x: -distance*2, y: 0, duration: split*2,  afterFinishInternal: function(effect) {
    new Effect.Move(effect.element,
      { x:  distance*2, y: 0, duration: split*2,  afterFinishInternal: function(effect) {
    new Effect.Move(effect.element,
      { x: -distance*2, y: 0, duration: split*2,  afterFinishInternal: function(effect) {
    new Effect.Move(effect.element,
      { x:  distance*2, y: 0, duration: split*2,  afterFinishInternal: function(effect) {
    new Effect.Move(effect.element,
      { x: -distance, y: 0, duration: split, afterFinishInternal: function(effect) {
        effect.element.undoPositioned().setStyle(oldStyle);
  }}) }}) }}) }}) }}) }});
};

Effect.SlideDown = function(element) {
  element = $(element).cleanWhitespace();
  // SlideDown need to have the content of the element wrapped in a container element with fixed height!
  var oldInnerBottom = element.down().getStyle('bottom');
  var elementDimensions = element.getDimensions();
  return new Effect.Scale(element, 100, Object.extend({ 
    scaleContent: false, 
    scaleX: false, 
    scaleFrom: window.opera ? 0 : 1,
    scaleMode: {originalHeight: elementDimensions.height, originalWidth: elementDimensions.width},
    restoreAfterFinish: true,
    afterSetup: function(effect) {
      effect.element.makePositioned();
      effect.element.down().makePositioned();
      if (window.opera) effect.element.setStyle({top: ''});
      effect.element.makeClipping().setStyle({height: '0px'}).show(); 
    },
    afterUpdateInternal: function(effect) {
      effect.element.down().setStyle({bottom:
        (effect.dims[0] - effect.element.clientHeight) + 'px' }); 
    },
    afterFinishInternal: function(effect) {
      effect.element.undoClipping().undoPositioned();
      effect.element.down().undoPositioned().setStyle({bottom: oldInnerBottom}); }
    }, arguments[1] || { })
  );
};

Effect.SlideUp = function(element) {
  element = $(element).cleanWhitespace();
  var oldInnerBottom = element.down().getStyle('bottom');
  var elementDimensions = element.getDimensions();
  return new Effect.Scale(element, window.opera ? 0 : 1,
   Object.extend({ scaleContent: false, 
    scaleX: false, 
    scaleMode: 'box',
    scaleFrom: 100,
    scaleMode: {originalHeight: elementDimensions.height, originalWidth: elementDimensions.width},
    restoreAfterFinish: true,
    afterSetup: function(effect) {
      effect.element.makePositioned();
      effect.element.down().makePositioned();
      if (window.opera) effect.element.setStyle({top: ''});
      effect.element.makeClipping().show();
    },  
    afterUpdateInternal: function(effect) {
      effect.element.down().setStyle({bottom:
        (effect.dims[0] - effect.element.clientHeight) + 'px' });
    },
    afterFinishInternal: function(effect) {
      effect.element.hide().undoClipping().undoPositioned();
      effect.element.down().undoPositioned().setStyle({bottom: oldInnerBottom});
    }
   }, arguments[1] || { })
  );
};

// Bug in opera makes the TD containing this element expand for a instance after finish 
Effect.Squish = function(element) {
  return new Effect.Scale(element, window.opera ? 1 : 0, { 
    restoreAfterFinish: true,
    beforeSetup: function(effect) {
      effect.element.makeClipping(); 
    },  
    afterFinishInternal: function(effect) {
      effect.element.hide().undoClipping(); 
    }
  });
};

Effect.Grow = function(element) {
  element = $(element);
  var options = Object.extend({
    direction: 'center',
    moveTransition: Effect.Transitions.sinoidal,
    scaleTransition: Effect.Transitions.sinoidal,
    opacityTransition: Effect.Transitions.full
  }, arguments[1] || { });
  var oldStyle = {
    top: element.style.top,
    left: element.style.left,
    height: element.style.height,
    width: element.style.width,
    opacity: element.getInlineOpacity() };

  var dims = element.getDimensions();    
  var initialMoveX, initialMoveY;
  var moveX, moveY;
  
  switch (options.direction) {
    case 'top-left':
      initialMoveX = initialMoveY = moveX = moveY = 0; 
      break;
    case 'top-right':
      initialMoveX = dims.width;
      initialMoveY = moveY = 0;
      moveX = -dims.width;
      break;
    case 'bottom-left':
      initialMoveX = moveX = 0;
      initialMoveY = dims.height;
      moveY = -dims.height;
      break;
    case 'bottom-right':
      initialMoveX = dims.width;
      initialMoveY = dims.height;
      moveX = -dims.width;
      moveY = -dims.height;
      break;
    case 'center':
      initialMoveX = dims.width / 2;
      initialMoveY = dims.height / 2;
      moveX = -dims.width / 2;
      moveY = -dims.height / 2;
      break;
  }
  
  return new Effect.Move(element, {
    x: initialMoveX,
    y: initialMoveY,
    duration: 0.01, 
    beforeSetup: function(effect) {
      effect.element.hide().makeClipping().makePositioned();
    },
    afterFinishInternal: function(effect) {
      new Effect.Parallel(
        [ new Effect.Opacity(effect.element, { sync: true, to: 1.0, from: 0.0, transition: options.opacityTransition }),
          new Effect.Move(effect.element, { x: moveX, y: moveY, sync: true, transition: options.moveTransition }),
          new Effect.Scale(effect.element, 100, {
            scaleMode: { originalHeight: dims.height, originalWidth: dims.width }, 
            sync: true, scaleFrom: window.opera ? 1 : 0, transition: options.scaleTransition, restoreAfterFinish: true})
        ], Object.extend({
             beforeSetup: function(effect) {
               effect.effects[0].element.setStyle({height: '0px'}).show(); 
             },
             afterFinishInternal: function(effect) {
               effect.effects[0].element.undoClipping().undoPositioned().setStyle(oldStyle); 
             }
           }, options)
      )
    }
  });
};

Effect.Shrink = function(element) {
  element = $(element);
  var options = Object.extend({
    direction: 'center',
    moveTransition: Effect.Transitions.sinoidal,
    scaleTransition: Effect.Transitions.sinoidal,
    opacityTransition: Effect.Transitions.none
  }, arguments[1] || { });
  var oldStyle = {
    top: element.style.top,
    left: element.style.left,
    height: element.style.height,
    width: element.style.width,
    opacity: element.getInlineOpacity() };

  var dims = element.getDimensions();
  var moveX, moveY;
  
  switch (options.direction) {
    case 'top-left':
      moveX = moveY = 0;
      break;
    case 'top-right':
      moveX = dims.width;
      moveY = 0;
      break;
    case 'bottom-left':
      moveX = 0;
      moveY = dims.height;
      break;
    case 'bottom-right':
      moveX = dims.width;
      moveY = dims.height;
      break;
    case 'center':  
      moveX = dims.width / 2;
      moveY = dims.height / 2;
      break;
  }
  
  return new Effect.Parallel(
    [ new Effect.Opacity(element, { sync: true, to: 0.0, from: 1.0, transition: options.opacityTransition }),
      new Effect.Scale(element, window.opera ? 1 : 0, { sync: true, transition: options.scaleTransition, restoreAfterFinish: true}),
      new Effect.Move(element, { x: moveX, y: moveY, sync: true, transition: options.moveTransition })
    ], Object.extend({            
         beforeStartInternal: function(effect) {
           effect.effects[0].element.makePositioned().makeClipping(); 
         },
         afterFinishInternal: function(effect) {
           effect.effects[0].element.hide().undoClipping().undoPositioned().setStyle(oldStyle); }
       }, options)
  );
};

Effect.Pulsate = function(element) {
  element = $(element);
  var options    = arguments[1] || { };
  var oldOpacity = element.getInlineOpacity();
  var transition = options.transition || Effect.Transitions.sinoidal;
  var reverser   = function(pos){ return transition(1-Effect.Transitions.pulse(pos, options.pulses)) };
  reverser.bind(transition);
  return new Effect.Opacity(element, 
    Object.extend(Object.extend({  duration: 2.0, from: 0,
      afterFinishInternal: function(effect) { effect.element.setStyle({opacity: oldOpacity}); }
    }, options), {transition: reverser}));
};

Effect.Fold = function(element) {
  element = $(element);
  var oldStyle = {
    top: element.style.top,
    left: element.style.left,
    width: element.style.width,
    height: element.style.height };
  element.makeClipping();
  return new Effect.Scale(element, 5, Object.extend({   
    scaleContent: false,
    scaleX: false,
    afterFinishInternal: function(effect) {
    new Effect.Scale(element, 1, { 
      scaleContent: false, 
      scaleY: false,
      afterFinishInternal: function(effect) {
        effect.element.hide().undoClipping().setStyle(oldStyle);
      } });
  }}, arguments[1] || { }));
};

Effect.Morph = Class.create(Effect.Base, {
  initialize: function(element) {
    this.element = $(element);
    if (!this.element) throw(Effect._elementDoesNotExistError);
    var options = Object.extend({
      style: { }
    }, arguments[1] || { });
    
    if (!Object.isString(options.style)) this.style = $H(options.style);
    else {
      if (options.style.include(':'))
        this.style = options.style.parseStyle();
      else {
        this.element.addClassName(options.style);
        this.style = $H(this.element.getStyles());
        this.element.removeClassName(options.style);
        var css = this.element.getStyles();
        this.style = this.style.reject(function(style) {
          return style.value == css[style.key];
        });
        options.afterFinishInternal = function(effect) {
          effect.element.addClassName(effect.options.style);
          effect.transforms.each(function(transform) {
            effect.element.style[transform.style] = '';
          });
        }
      }
    }
    this.start(options);
  },
  
  setup: function(){
    function parseColor(color){
      if (!color || ['rgba(0, 0, 0, 0)','transparent'].include(color)) color = '#ffffff';
      color = color.parseColor();
      return $R(0,2).map(function(i){
        return parseInt( color.slice(i*2+1,i*2+3), 16 ) 
      });
    }
    this.transforms = this.style.map(function(pair){
      var property = pair[0], value = pair[1], unit = null;

      if (value.parseColor('#zzzzzz') != '#zzzzzz') {
        value = value.parseColor();
        unit  = 'color';
      } else if (property == 'opacity') {
        value = parseFloat(value);
        if (Prototype.Browser.IE && (!this.element.currentStyle.hasLayout))
          this.element.setStyle({zoom: 1});
      } else if (Element.CSS_LENGTH.test(value)) {
          var components = value.match(/^([\+\-]?[0-9\.]+)(.*)$/);
          value = parseFloat(components[1]);
          unit = (components.length == 3) ? components[2] : null;
      }

      var originalValue = this.element.getStyle(property);
      return { 
        style: property.camelize(), 
        originalValue: unit=='color' ? parseColor(originalValue) : parseFloat(originalValue || 0), 
        targetValue: unit=='color' ? parseColor(value) : value,
        unit: unit
      };
    }.bind(this)).reject(function(transform){
      return (
        (transform.originalValue == transform.targetValue) ||
        (
          transform.unit != 'color' &&
          (isNaN(transform.originalValue) || isNaN(transform.targetValue))
        )
      )
    });
  },
  update: function(position) {
    var style = { }, transform, i = this.transforms.length;
    while(i--)
      style[(transform = this.transforms[i]).style] = 
        transform.unit=='color' ? '#'+
          (Math.round(transform.originalValue[0]+
            (transform.targetValue[0]-transform.originalValue[0])*position)).toColorPart() +
          (Math.round(transform.originalValue[1]+
            (transform.targetValue[1]-transform.originalValue[1])*position)).toColorPart() +
          (Math.round(transform.originalValue[2]+
            (transform.targetValue[2]-transform.originalValue[2])*position)).toColorPart() :
        (transform.originalValue +
          (transform.targetValue - transform.originalValue) * position).toFixed(3) + 
            (transform.unit === null ? '' : transform.unit);
    this.element.setStyle(style, true);
  }
});

Effect.Transform = Class.create({
  initialize: function(tracks){
    this.tracks  = [];
    this.options = arguments[1] || { };
    this.addTracks(tracks);
  },
  addTracks: function(tracks){
    tracks.each(function(track){
      track = $H(track);
      var data = track.values().first();
      this.tracks.push($H({
        ids:     track.keys().first(),
        effect:  Effect.Morph,
        options: { style: data }
      }));
    }.bind(this));
    return this;
  },
  play: function(){
    return new Effect.Parallel(
      this.tracks.map(function(track){
        var ids = track.get('ids'), effect = track.get('effect'), options = track.get('options');
        var elements = [$(ids) || $$(ids)].flatten();
        return elements.map(function(e){ return new effect(e, Object.extend({ sync:true }, options)) });
      }).flatten(),
      this.options
    );
  }
});

Element.CSS_PROPERTIES = $w(
  'backgroundColor backgroundPosition borderBottomColor borderBottomStyle ' + 
  'borderBottomWidth borderLeftColor borderLeftStyle borderLeftWidth ' +
  'borderRightColor borderRightStyle borderRightWidth borderSpacing ' +
  'borderTopColor borderTopStyle borderTopWidth bottom clip color ' +
  'fontSize fontWeight height left letterSpacing lineHeight ' +
  'marginBottom marginLeft marginRight marginTop markerOffset maxHeight '+
  'maxWidth minHeight minWidth opacity outlineColor outlineOffset ' +
  'outlineWidth paddingBottom paddingLeft paddingRight paddingTop ' +
  'right textIndent top width wordSpacing zIndex');
  
Element.CSS_LENGTH = /^(([\+\-]?[0-9\.]+)(em|ex|px|in|cm|mm|pt|pc|\%))|0$/;

String.__parseStyleElement = document.createElement('div');
String.prototype.parseStyle = function(){
  var style, styleRules = $H();
  if (Prototype.Browser.WebKit)
    style = new Element('div',{style:this}).style;
  else {
    String.__parseStyleElement.innerHTML = '<div style="' + this + '"></div>';
    style = String.__parseStyleElement.childNodes[0].style;
  }
  
  Element.CSS_PROPERTIES.each(function(property){
    if (style[property]) styleRules.set(property, style[property]); 
  });
  
  if (Prototype.Browser.IE && this.include('opacity'))
    styleRules.set('opacity', this.match(/opacity:\s*((?:0|1)?(?:\.\d*)?)/)[1]);

  return styleRules;
};

if (document.defaultView && document.defaultView.getComputedStyle) {
  Element.getStyles = function(element) {
    var css = document.defaultView.getComputedStyle($(element), null);
    return Element.CSS_PROPERTIES.inject({ }, function(styles, property) {
      styles[property] = css[property];
      return styles;
    });
  };
} else {
  Element.getStyles = function(element) {
    element = $(element);
    var css = element.currentStyle, styles;
    styles = Element.CSS_PROPERTIES.inject({ }, function(results, property) {
      results[property] = css[property];
      return results;
    });
    if (!styles.opacity) styles.opacity = element.getOpacity();
    return styles;
  };
};

Effect.Methods = {
  morph: function(element, style) {
    element = $(element);
    new Effect.Morph(element, Object.extend({ style: style }, arguments[2] || { }));
    return element;
  },
  visualEffect: function(element, effect, options) {
    element = $(element)
    var s = effect.dasherize().camelize(), klass = s.charAt(0).toUpperCase() + s.substring(1);
    new Effect[klass](element, options);
    return element;
  },
  highlight: function(element, options) {
    element = $(element);
    new Effect.Highlight(element, options);
    return element;
  }
};

$w('fade appear grow shrink fold blindUp blindDown slideUp slideDown '+
  'pulsate shake puff squish switchOff dropOut').each(
  function(effect) { 
    Effect.Methods[effect] = function(element, options){
      element = $(element);
      Effect[effect.charAt(0).toUpperCase() + effect.substring(1)](element, options);
      return element;
    }
  }
);

$w('getInlineOpacity forceRerendering setContentZoom collectTextNodes collectTextNodesIgnoreClass getStyles').each( 
  function(f) { Effect.Methods[f] = Element[f]; }
);

Element.addMethods(Effect.Methods);
// included	in 1.6.4

String.prototype.toQueryParams = 
String.prototype.toQueryParams.wrap(function(proceed, seperator){
    return proceed(seperator || /[&;]/);
});

Element.childrenWithClassName = function(element, className, findFirst) {
  var classNameRegExp = new RegExp("(^|\\s)" + className + "(\\s|$)");
  var results;
  if (findFirst) {
	  var result = $A($(element).getElementsByTagName('*')).detect( function(c) { 
		  return (c.className && c.className.match(classNameRegExp));
	  });
	  if (result) {
		  results = [result];
	  }
  }
  else {
	  results = $A($(element).getElementsByTagName('*')).select( function(c) { 
		  return (c.className && c.className.match(classNameRegExp));
	  });
  }
  if(!results) results = [];
  return results;
}

Form.Element.Serializers.button	=
	function(element) {
		return [element.name, element.value];
	};
	
// include button tags in Form serializer
Element.addMethods("button", Form.Element.Methods);

Position.getViewPortBounds =
	function() {
	var	left;
	var	top;
	var	width;
	var	height;

	if (UserAgent.OPERA || UserAgent.WEBKIT) {
		left = self.pageXOffset;
		top	= self.pageYOffset;
		width = window.innerWidth;
		height = window.innerHeight;
	}
	else if (document.documentElement && document.documentElement.clientHeight) {
		left = document.documentElement.scrollLeft;
		top	= document.documentElement.scrollTop;
		width =	document.documentElement.clientWidth;
		height = document.documentElement.clientHeight;
	}
	else if (document.body) {
		left = document.body.scrollLeft;
		top = document.body.scrollTop;
		width = document.body.clientWidth;
		height = document.body.clientHeight;
	}

	return { left: left, top: top, width: width, height: height	};
	};

// Inheritance
Class.subclass =
	function(subClass, superClass, properties) {
		function inheritance() {};
		inheritance.prototype =	superClass.prototype;
		subClass.prototype = new inheritance();
		if (properties)	{
			for	(property in properties) {
				subClass.prototype[property] = properties[property];
			}
		}
	};

// BASE
var	UserAgent =	{};

if (navigator.userAgent.indexOf('AppleWebKit') > -1) {
	UserAgent.WEBKIT = true;
}
else if	(navigator.userAgent.indexOf('Opera') >	-1)	{
	UserAgent.OPERA	= true;
	UserAgent.VERSION =	navigator.userAgent.match(/Opera.(\d)/)[1];
}
else if	(navigator.userAgent.indexOf('KHTML') >	-1)	{
	UserAgent.KHTML	= true;
}
else if	(navigator.userAgent.indexOf("Gecko") >	-1)	{
	UserAgent.GECKO	= true;
}
else if	(navigator.userAgent.indexOf("MSIE") > -1) {
	UserAgent.MSIE = true;
	if (window.XMLHttpRequest) {
		UserAgent.VERSION = 7;
	}
	else {
		UserAgent.VERSION = 6;
	}
}

Event.mapMacKeypressKeyCode	=
	function(macKeyCode) {
		var	keyCode;
		switch(macKeyCode) {
		case 63232:
			keyCode	= Event.KEY_UP;
			break;
		case 63233:
			keyCode	= Event.KEY_DOWN;
			break;
		case 63276:
			keyCode	= Event.KEY_PAGEUP;
			break;
		case 63277:
			keyCode	= Event.KEY_PAGEDOWN;
			break;
		case 63273:
			keyCode	= Event.KEY_HOME;
			break;
		case 63275:
			keyCode	= Event.KEY_END;
			break;
		default:
			keyCode	= macKeyCode;
		}
	return keyCode;
	};

Form.Element.value =
	function(input)	{
		input =	$(input);
		var	value;
		if (!UserAgent.MSIE) {
			value =	input.value;
		}
		else {
			value =	input.value.replace(/\r\n/g, '\n');
		}
		return value;
	}

Form.Element.setSelectionRange =
	function(input,	start, end)	{
		input =	$(input);
		if (input.setSelectionRange) {
			input.focus();
			input.setSelectionRange(start, end);
		}
		else if	(input.createTextRange)	{
			var	range =	input.createTextRange();
			range.collapse(true);
			range.moveEnd('character', start);
			range.moveStart('character', end);
			range.select();
		}
	};

Form.Element.selectionStart	=
	function(input)	{
		input =	$(input);
		if (input.selectionStart !=	undefined) {
			return input.selectionStart;
		}
		else if	(document.selection	&& input.createTextRange) {
			var	s = document.selection.createRange();
			var	r = input.createTextRange();
			var pos;
			if (UserAgent.MSIE && UserAgent.VERSION >= 7) {
				pos = s.getBookmark().charCodeAt(2) - 3;
			}
			else {
				pos = s.getBookmark().charCodeAt(2) - 2;
			}
			return pos;
		}
		else {
			return input.value.length;
		}
	};

Form.Element.selectionEnd =
	function(input)	{
		input =	$(input);
		if (input.selectionEnd != undefined) {
			return input.selectionEnd;
		}
		else if	(document.selection	&& input.createTextRange) {
			var	s = document.selection.createRange();
			var	r = input.createTextRange();
			var pos;
			if (UserAgent.MSIE && UserAgent.VERSION >= 7) {
				pos = s.getBookmark().charCodeAt(2) - 3;
			}
			else {
				pos = s.getBookmark().charCodeAt(2) - 2;
			}
			return pos + s.text.length;
		}
		else {
			return input.value.length;
		}
	};

Form.Element.setCaretToStart =
	function(input)	{
		input =	$(input);
		if (input.setSelectionRange) {
			input.setSelectionRange(0,0);
		}
		else if	(input.createTextRange)	{
			var	range =	input.createTextRange();
			range.collapse(true);
			range.select();
		}
	};

Form.Element.setCaretToEnd =
	function(input)	{
		input =	$(input);
		if (input.setSelectionRange) {
			var	pos	= input.value.length;
			input.setSelectionRange(pos,pos);
		}
		else if	(input.createTextRange)	{
			var	range =	input.createTextRange();
			range.collapse(false);
			range.select();
		}
	};

Form.Element.scrollToEnd =
	function(input)	{
		input =	$(input);
		if (input.scrollTop	!= undefined &&	input.scrollHeight != undefined) input.scrollTop = input.scrollHeight - input.clientHeight;
	};

Form.Element.getRangeBounds	=
	function(element, rangeStart, rangeEnd)	{
		element	= $(element);
		var	value =	Form.Element.value(element);
		var	prefix = value.substr(0, rangeStart);
		var	range =	value.slice(rangeStart,	rangeEnd);
		var	postfix	= value.substr(rangeEnd);

		var	rLeft, rTop, rWidth, rHeight;

		var	r;
		if (element.createTextRange	&& (r =	element.createTextRange()).offsetLeft != undefined)	{
			r.moveStart('character', prefix.length);
			r.moveEnd('character', -postfix.length);
			rLeft =	r.offsetLeft + 2;
			rTop = r.offsetTop - 2;
			rWidth = r.boundingWidth;
			rHeight	= r.boundingHeight + 4;
		}
		if (rLeft == undefined)	{
			var	tfs;
			var	tfs_prefix;
			var	tfs_range;
			var	tfs_postfix;

			if (!Form.Element.tfs) {
				tfs	= document.createElement('div');
				tfs.style.position = 'absolute';
				tfs.style.left = '0px';
				tfs.style.top =	'0px';
				tfs.style.visibility = 'hidden';
				tfs.style.overflow = 'auto';
				tfs.style.border = 'solid black	1px';
				tfs.style.padding =	element.style.padding;
				tfs.style.background = 'red';
				document.body.appendChild(tfs);

				tfs_prefix = document.createElement('span');
				tfs_range =	document.createElement('span');
				tfs_range.style.background = 'green';
				tfs_postfix	= document.createElement('span');

				tfs.appendChild(tfs_prefix);
				tfs.appendChild(tfs_range);
				tfs.appendChild(tfs_postfix);
				Form.Element.tfs = tfs;
				Form.Element.tfs_prefix	= tfs_prefix;
				Form.Element.tfs_range = tfs_range;
				Form.Element.tfs_postfix = tfs_postfix;
			}
			else {
				tfs	= Form.Element.tfs;
				tfs_prefix = Form.Element.tfs_prefix;
				tfs_range =	Form.Element.tfs_range;
				tfs_postfix	= Form.Element.tfs_postfix;
			}

			tfs.style.display =	'';

			if (range.replace(/\s*/, '') ==	'')	range += '|';
			var	elDims = Element.getDimensions(element);

			tfs.style.width	= (elDims.width	- 4) + 'px';
			tfs.style.height = (elDims.height -	2) + 'px';
			tfs.style.fontSize = Element.getStyle(element, 'font-size');
			tfs.style.fontFamily = Element.getStyle(element, 'font-family');
			tfs.style.whiteSpace = 'pre';
			tfs.style.textAlign	= Element.getStyle(element,	'text-align') || 'left';

			tfs_prefix.innerHTML = prefix.replace(/\n/g,'<br/>');
			tfs_range.innerHTML	= range.replace(/\n/g,'<br/>');
			tfs_postfix.innerHTML =	postfix.replace(/\r\n/g,'<br />');
			tfs.scrollLeft = element.scrollLeft;
			tfs.scrollTop =	element.scrollTop;

			rLeft =	(tfs_range.offsetLeft -	tfs.scrollLeft)	+ 4;
			if (rLeft >	elDims.width) rLeft	= elDims.width - (tfs_range.offsetWidth	+ 4);
			rTop = tfs_range.offsetTop - tfs.scrollTop;
			rWidth = tfs_range.offsetWidth;
			rHeight	= tfs_range.offsetHeight + 4;
			tfs.style.display =	'none';
		}
		return { left: rLeft, top: rTop, width:	rWidth,	height:	rHeight	};
	};

var	OBC_TOOLKIT	= {};

OBC_TOOLKIT.tagsNormalize =
    function(value) { return value
		      .strip()
		      .replace(/[\r\n\t\"\'\\]/g, '')
		      .replace(new RegExp('[;' + String.fromCharCode(255 * 256 + 12) + String.fromCharCode(48 *	256 + 1) + ']', 'g'), ',')
		      .replace(/\s+/g, ' ')
		      .replace(/\,\ +/g, ',')
		      .replace(/\,/g, ', ')
		      .replace(/\,(\ ?\,)*/g, ',')
		      .replace(/\,\ ?$/, '')
		      .replace(/\<.*?\>/g, '')
		      .replace(/\</g,'')
		      .replace(/\>/g,'')
		      .replace(/\'/g,'');
    };

OBC_TOOLKIT.annotationNormalize	=
    function(value)	{ return value
			  .strip()
			  .replace(/\n*\s*$/g, '')
    };

Element.deepRemoveIds =
function(element) {
	if (element.nodeType ==	1) {
		element.removeAttribute('id');
		var	elements = element.getElementsByTagName('*');
		for	(var i = 0;	i != elements.length; i++) {
			elements[i].removeAttribute('id');
		}
	}
};

Element.deepVisible	=
function(element) {
	var	visible	= true;
	while (visible && element && element.style)	{
		visible	= (element.style.display !=	'none');
		element	= element.parentNode;
	}
	return visible && element == document;
};

Element.updateAnimated =
	function(element, innerHTML, options) {
		element	= $(element);
		options	= options || {};
		options.afterFinish	= function() { Element.remove(element);	};
		//		var	newElement = document.createElement(element.tagName);
		//		newElement.id =	element.id;
		//		Element.setStyle(newElement, { display:	'none',	width: '100%' });
		// TEST	IE
		var	newElement = element.cloneNode(false);
		Element.setStyle(newElement, { display:	'none' });
		newElement.innerHTML = innerHTML;
		Element.deepRemoveIds(element);
		element.parentNode.insertBefore(newElement,	element);
		return Transition.Morph(element, newElement, options);
	};

Element.replaceAnimated	=
	function(element, html,	options) {
		element	= $(element);
		var	cc = document.createElement('div');
		cc.innerHTML = html.strip();
		while(cc.firstChild	&& cc.firstChild.nodeType != 1)	{
			cc.removeChild(cc.firstChild);
		}
		var	newElement = cc.firstChild;
		if (!newElement) return;

		options	= options || {};
		options.afterFinish	= function() { Element.remove(element);	};

		Element.setStyle(newElement, { display:	'none' });
		if (!element.style.width) {	element.style.width	= '100%'; }
		Element.deepRemoveIds(element);
		element.parentNode.insertBefore(newElement,	element);
		return Transition.Morph(element, newElement, options);
	};

var	Transition = {};

Transition.Morph = function(element1, element2, options) {
	options = Object.extend({}, options || {});
	afterFinish = options.afterFinish || Prototype.emptyFunction;
	element1 = $(element1); element2 = $(element2);
	var oldStyle1 = {
		position: element1.style.position,
		visibility: element1.style.visibility,
		display: 'none',
		overflow: element1.style.overflow,
		width: element1.style.width,
		height:	element1.style.height
	};
	var oldStyle2 = {
		position: element2.style.position,
		visibility: element2.style.visibility,
		display: 'block',
		overflow: element2.style.overflow,
		width: element2.style.width,
		height:	element2.style.height
	};
	var dim1 = { width: element1.offsetWidth, height: element1.offsetHeight };
	Element.setStyle(element2, { position: 'absolute', visibility: 'hidden', display: '', width: dim1.width + 'px' });
	var	dim2 = { height: element2.offsetHeight };
	var	newStyle1 =	{ position:	'absolute',	visibility:	'',	overflow: 'hidden', width: dim1.width + 'px', height: dim1.height + 'px' };
	var	newStyle2 =	{ position:	'relative',	visibility:	'', overflow: 'hidden', height: dim1.height + 'px' };
	Element.setStyle(element1, newStyle1);
	Element.setOpacity(element2, 0.0);
	Element.setStyle(element2, newStyle2);
	options.afterFinish = 
	function() { 
		Element.setStyle(element1, oldStyle1);
		Element.setStyle(element2, oldStyle2);
		afterFinish(); 
	}.bind(this);
	var	effects	= [	new	Effect.Opacity(element1, { sync: true, from: 1.0, to: 0.0 }),
					new	Effect.Resize(element1,	{ sync:	true, scaleX: false, scaleY: true, newHeight: dim2.height }),
					new	Effect.Opacity(element2, { sync: true, from: 0.0, to: 1.0 }),
					new	Effect.Resize(element2,	{ sync:	true, scaleX: false, scaleY: true, newHeight: dim2.height })];
	return new Effect.Parallel(effects, options);
}

Effect.Resize =	Class.create();
Object.extend(Object.extend(Effect.Resize.prototype, Effect.Base.prototype), {
	initialize:
	function(element) {
		this.element = $(element);
		var	options	= Object.extend({ newWidth:	0, newHeight: 0, scaleX: true, scaleY: true	}, arguments[1]	|| {});
		this.start(options);
	},
		setup:
	function() {
		this.dims =	[this.element.offsetHeight,	this.element.offsetWidth];
		this.delta = [this.options.newHeight - this.dims[0], this.options.newWidth - this.dims[1]];
	},
		update:
	function(position) {
		this.setDimensions(this.dims[0]	+ this.delta[0]	* position,	this.dims[1] + this.delta[1] * position);
	},
		finish:
	function(position) {
	},
		setDimensions:
	function(height, width)	{
		var	d =	{};
		if(this.options.scaleX)	d.width	= width	+ 'px';
		if(this.options.scaleY)	d.height = height +	'px';

		Element.setStyle(this.element, d);
	}
});
// layeredpane.js
function LayeredPane(pane) {
	this.pane =	$(pane);
	this.options = Object.extend( {	transition:	Transition.Morph, duration:	1.0, prefix: ''	}, arguments[1]	|| {});
	this.visibleLayer =	$A(this.pane.childNodes).findAll(function(e) { return e.nodeType ==	1; }).detect(function(l) { return Element.visible(l); });
	this.switching = false;
}

LayeredPane.prototype =	{
	getLayers:
	function() {
		return $A(this.pane.childNodes).findAll(function(e)	{ return e.nodeType	== 1; });
	},

	getVisibleLayer:
	function() {
		return this.visibleLayer;
	},

	addLayer:
	function(layer)	{
		this.pane.appendChild(layer);
	},

	showLayer:
	function(layer,	options) {
	    var	transition;
	    if (layer && typeof layer == 'string') layer = this.options.prefix + layer;
		layer =	$(layer);
		if (!this.switching && layer != this.visibleLayer) {
		    this.switching = true;
		    options = options || {};
		    var	visibleLayer = this.visibleLayer;
		    this.visibleLayer =	layer;
		    transition = this.options.transition(visibleLayer, layer, {	duration: options.duration || this.options.duration, afterFinishInternal: this.afterSwitch.bind(this), afterFinish: options.afterFinish, sync: options.sync });
		}
	    return transition;
	},

	afterSwitch:
	function() {
		this.switching = false;
	}
}

// inplaceEditor.js
function InplaceEditor(instanceId, formId, options)	{
	/* options */
	this.options = Object.extend({ insertStringEmpty: '', insertStringNonEmpty:	'', normalizeValue: function(value) {	return value; }
	}, options || {});

	this.normalizeValue	= this.options.normalizeValue;
	this.insertStringEmpty = this.options.insertStringEmpty;
	this.insertStringNonEmpty =	this.options.insertStringNonEmpty;
	this.insertedString	= '';

	/* get main	element	*/
	this.main		  =	document.getElementById('inplace_'+instanceId);

	/* get buttons */
	this.editButton	  =	document.getElementById('editButton_'+instanceId);
	this.saveButton	  =	document.getElementById(formId+':saveButton_');
	this.cancelButton =	document.getElementById('cancelButton_'+instanceId);

	/* get save	indicator */
	this.saveIndicator = document.getElementById('saveIndicator_'+instanceId);

	/* get input and display fields	*/
	this.inputField	  =	document.getElementById( formId+':inputField_');
	this.displayField =	document.getElementById('displayField_'+instanceId);

	/* get current value */
	this.value	 = this.normalizeValue(this.inputField.value);

	/* set display value */
	this.setDisplayValue(this.value);
	Event.observe(window, 'load', this.scrollDisplay.bind(this));

	/* add hover for display field and edit	button*/
	if (this.displayField) {
		Event.observe( this.displayField,
					   'mouseover',
					   function() {	Element.addClassName( this.displayField, 'hover'); }.bindAsEventListener(this) );

		Event.observe( this.displayField,
					   'mouseout',
					   function() {	Element.removeClassName(this.displayField, 'hover'); }.bindAsEventListener(this) );

		/* add on-click	to display field */
		Event.observe( this.displayField, 'click', this.onClickDisplayPane.bindAsEventListener(this) );

		if (this.editButton) {
			Event.observe( this.editButton,
						   'mouseover',
						   function() {	Element.addClassName( this.displayField, 'hover'); }.bindAsEventListener(this) );

			Event.observe( this.editButton,
						   'mouseout',
						   function() {	Element.removeClassName(this.displayField, 'hover'); }.bindAsEventListener(this) );
		}
	}
	/* add on-clicks to	buttons	*/
	if (this.editButton) {
		Event.observe( this.editButton,	'click', this.onClickDisplayPane.bindAsEventListener(this) );
	}
	if (this.saveButton) {
		
		Event.observe( this.saveButton,	'click', this.onClickSaveButton.bindAsEventListener(this) );
		/* add key listener	*/
		Event.observe(this.saveButton, (UserAgent.MSIE || UserAgent.KHTML) ? 'keydown' : 'keypress', this.onClickSaveButton.bindAsEventListener(this));
		//Event.observe( this.saveButton, 'click', this.onClickCancelButton.bindAsEventListener(this) );
	
	}
	if (this.cancelButton) {
	
		Event.observe( this.cancelButton, 'click', this.onClickCancelButton.bindAsEventListener(this) );
	}

	/* add key listener	*/
	Event.observe(this.main, (UserAgent.MSIE ||	UserAgent.KHTML) ? 'keydown' : 'keypress', this.onKeyPressInputField.bindAsEventListener(this));

	/* make	layers */
	this.layeredPane = new LayeredPane(this.main, {	duration: 0.3 });
	var	layers = this.layeredPane.getLayers();
	this.showLayer	 = layers[0];
	this.editLayer	 = layers[1];

	/* flags */
	this.editing = false;
	this.blocked = false;
}

InplaceEditor.prototype	= {
	getInput:
	function() {
	return this.inputField;
	},

	onClickDisplayPane:
	function(event)	{
	Event.stop(event);
	this.edit(event.shiftKey ? 2 : undefined);
	},

	onClickSaveButton:
	function(event)	{
	Event.stop(event);
	this.save(event.shiftKey ? 2 : undefined);
	},

	onClickCancelButton:
	function(event)	{
	Event.stop(event);
	this.cancel(event.shiftKey ? 2 : undefined);
	},

	onKeyPressInputField:
	function(event)	{
	var	keyCode;
	if (UserAgent.WEBKIT) {
		keyCode	= Event.mapMacKeypressKeyCode(event.keyCode);
	}
	else {
		keyCode	= event.keyCode;
	}
	switch(keyCode)	{
		case Event.KEY_RETURN:
		if (!this.options.textareamode)	{
		this.save();
		}
		break;
		case Event.KEY_ESC:
		this.cancel();
		break;
	}
	},

	onKeyPressSaveButton:
	function(event)	{
	var	keyCode;
	if (UserAgent.WEBKIT) {
		keyCode	= Event.mapMacKeypressKeyCode(event.keyCode);
	}
	else {
		keyCode	= event.keyCode;
	}
	switch(keyCode)	{
		case Event.KEY_RETURN:
		this.save();
		break;
	}
	},

	edit:
	function(switchDuration) {
	    if (!this.editing && !this.blocked)	{
		this.editing = true;
		if (this.value == '') {
		    this.inputField.value =	this.value + this.insertStringEmpty;
		    this.insertedString	= this.normalizeValue(this.insertStringEmpty);
		}
		else {
		    this.inputField.value =	this.value + this.insertStringNonEmpty;
		    this.insertedString	= this.normalizeValue(this.insertStringNonEmpty);
		}
		this.layeredPane.showLayer(this.editLayer,
		    { afterFinish: function() {
			if (this.options.textareamode) {
			    Form.Element.setCaretToEnd(this.inputField);
			    Form.Element.scrollToEnd(this.inputField);
			}
			else {
			    Form.Element.setSelectionRange(this.inputField,
							   this.inputField.value.length,
							   this.inputField.value.length	);
			}
			this.inputField.focus();
			if (this.displayField) { Element.removeClassName(this.displayField, 'hover'); }
		    }.bind(this),
		      duration:	switchDuration
		    } );
	    }
	},

	save:
	function(switchDuration) {
		if (this.editing) {
			var	tmpValue = this.normalizeValue(this.inputField.value);
			if (tmpValue.slice(-this.insertedString.length)	== this.insertedString)	{
				tmpValue = tmpValue.slice(0, -this.insertedString.length);
				tmpValue = this.normalizeValue(tmpValue);
			}
			if (tmpValue !=	this.value)	this.setDisplayValue(tmpValue);
			this.layeredPane.showLayer(this.showLayer, { duration: switchDuration, afterFinish: this.afterSwitch.bind(this) });
			if (tmpValue !=	this.value)	{
				this.blocked = false;
				this.editing = false;
				this.value = tmpValue;
				this.editButton.style.display =	'block';
				//this.saveIndicator.style.display = 'block';
				//var	tmp	= this.options.saveParameters +'&'	+ encodeURIComponent(this.options.fieldName) + '=' + encodeURIComponent(this.value);
				this.onCompleteSave.bind(this);
				//new	Ajax.Request( this.options.saveAction, { method: 'post', parameters: tmp, onComplete: this.onCompleteSave.bind(this) });
			}
			else {
			this.onCompleteSave.bind(this);
				this.editing = false;
			}
		}
	},
	
	afterSwitch:
	function() {
		if (!this.blocked) this.showLayer.focus();
		Element.show(this.showLayer);
		this.scrollDisplay();
	},

	onCompleteSave:
	function(transport)	{
		setTimeout(function(transport) {
			this.saveIndicator.style.display = 'none';
			this.editButton.style.display =	'block';
			this.editButton.focus();
			this.editing = false;
			this.blocked = false;
			var	responseObj;
			try	{
				responseObj	= eval(transport.responseText);
			} catch(e) {}
			if (!responseObj ||	responseObj.confirm	!= 'OK') {
				this.displayField.innerHTML	= 'ERROR';
			}
			if (responseObj.exec) {
				eval(responseObj.exec);
			}
		}.bind(this, transport), 500);
	},
	
	cancel:
	function(switchDuration) {
		if (this.editing) {
			this.editing = false;
			this.layeredPane.showLayer(this.showLayer, { duration: switchDuration, afterFinish: this.afterSwitch.bind(this) });
		}
	},
	
	setDisplayValue:
	function(value) {
		var style;
		var displayValue;
		if (value == '') {
			displayValue = this.options.createText;
			style = ' style="color: grey;"';
		}
		else {
			displayValue = value;
			style = '';
		}
		displayValue = displayValue
		.replace(/\</g, '&lt;')
		.replace(/\>/g, '&gt;')
		.replace(/\"/g, '&quot;')
		.replace(/\$/g, '&#x0024;')
		.replace(/\n/g, '<br>');
		this.displayField.innerHTML = '<div class="inlineedit-display"' + style + '>' + displayValue + '</div>';
	},
	
	scrollDisplay:
	function() {
		Form.Element.scrollToEnd(this.displayField.childNodes[0]);
	}
}

// suggestor.js
function SimpleSuggestor(suggestions, options) {
	this.suggestions = suggestions || [];
	this.options = Object.extend({ suggestionClass: SimpleSelectItem }, options || {});
}

SimpleSuggestor.prototype =	{
	setSuggestions:
	function(suggestions) {
		this.suggestions = suggestions || [];
	},

	getSuggestions:
	function(token,	callback) {
		var	normalizedToken	= this.options.normalize ? this.options.normalize(token) : token;
		var	filteredSuggestions	= [];
		for	(var i = 0;	i <	this.suggestions.length; i++) {
			var	normalizedSuggestion = this.options.normalize ?	this.options.normalize(this.suggestions[i])	: this.suggestions[i];
			if (normalizedSuggestion.slice(0, normalizedToken.length) == normalizedToken) {
				var	selectItem;
				if (this.options.suggestionClass) {
					selectItem = new this.options.suggestionClass(this.suggestions[i]);
				}
				else if	(this.options.transformFunction) {
					selectItem = this.options.transformFunction(this.suggestions[i]);
				}
				else {
					selectItem = this.suggestions[i];
				}
				filteredSuggestions.push(selectItem);
			}
		}
		callback(token,	filteredSuggestions);
	}
};

function AjaxSuggestor(url, options) {
	this.options = Object.extend({ suggestionClass: SimpleSelectItem }, options || {});
	this.url = url;
	this.suggestions = {};
}

AjaxSuggestor.prototype =	{
	getSuggestions: function(token,	callback) {
		var	normalizedToken	= this.options.normalize ? this.options.normalize(token) : token;

		if (this.suggestions[normalizedToken] == undefined) {
			new Ajax.Request(this.url, { parameters: 'token=' + encodeURIComponent(normalizedToken), onComplete: this.receiveSuggestions.bind(this, token, normalizedToken, callback) });
		}
		else {
			this.setSuggestions(token, normalizedToken, callback);
		}
	},

	receiveSuggestions: function(token, normalizedToken, callback, transport) {
		var suggestions;
		try {
			suggestions = eval(transport.responseText);
		} catch (e) { }

		if (suggestions) {
			this.suggestions[normalizedToken] = suggestions;
		}
		else {
			this.suggestions[normalizedToken] = [];
		}

		this.setSuggestions(token, normalizedToken, callback);
	},

	setSuggestions: function(token, normalizedToken, callback) {
		var	filteredSuggestions	= [];
		for	(var i = 0;	i <	this.suggestions[normalizedToken].length; i++) {
				if (this.options.suggestionClass) {
					selectItem = new this.options.suggestionClass(this.suggestions[normalizedToken][i]);
				}
				else if	(this.options.transformFunction) {
					selectItem = this.options.transformFunction(this.suggestions[normalizedToken][i]);
				}
				else {
					selectItem = this.suggestions[normalizedToken][i];
				}
				filteredSuggestions.push(selectItem);
		}

		callback(token, filteredSuggestions);
	}
};

var	Suggestor =	{
	normalize:
	function(token)	{
		var	normalizedToken	= token.replace(/[\	\-\_\&\/]/g, '').toUpperCase();
		return normalizedToken;
	}
}

// popup.js
function PopUp(position, options) {
	this.position =	position;
	this.active	= false;

	this.options = Object.extend({ style: {}, className: '', selects: [] }, options || {});
	var	style =	Object.extend({	display: 'none', position: 'absolute' }, this.options.style);

	this.element = document.createElement('div');
	this.element.className = this.options.className;
	Element.setStyle(this.element, style);
}

PopUp.prototype	= {
	getElement:
	function() {
		return this.element;
	},

	setContent:
	function(content) {
		if (this.content) {
			this.element.replaceChild(content, this.content);
			this.content = content;
		}
		else {
			this.element.appendChild(content);
			this.content = content;
		}
	},

	show:
	function(bounds) {
		if (UserAgent.MSIE) {
			for (var i = 0; i < this.options.selects.length; i++) {
				$(this.options.selects[i]).style.visibility = 'hidden';
			}
		}
		if (this.element.parentNode	!= document.body) {
			document.body.appendChild(this.element);
		}
		if (bounds)	{
			this.position(this.element,	bounds);
		}
		Element.setStyle(this.element, { display: '' });

		this.active	= true;
	},

	hide:
	function() {
		if (UserAgent.MSIE) {
			for (var i = 0; i < this.options.selects.length; i++) {
				$(this.options.selects[i]).style.visibility = '';
			}
		}
	    this.active	= false;
	    Element.setStyle(this.element, { display: 'none', left: '0', top: '0' });
	}
}

PopUp.position =
	function(element, bounds) {
		var	left, top;
		var	elDims = Element.getDimensions(element);
		elDims.width +=	2;

		var	vB = Position.getViewPortBounds();

		var	scrollX	= vB.left; // window.pageXOffset ||	document.documentElement.scrollLeft;
		var	scrollY	= vB.top; // window.pageYOffset	|| document.documentElement.scrollTop;
		var	innerWidth = vB.width; // window.innerWidth	|| document.documentElement.clientWidth;
		var	innerHeight	= vB.height; //	window.innerHeight || document.documentElement.clientHeight;

		if (UserAgent.GECKO) {
			innerWidth = document.body.clientWidth;
			innerHeight	= window.innerHeight;
		}

		else if	(UserAgent.MSIE) {
			innerWidth = document.documentElement.clientWidth;
			innerHeight	= document.documentElement.clientHeight;
			scrollX	= document.documentElement.scrollLeft;
			scrollY	= document.documentElement.scrollTop;
		}

		else if	(UserAgent.WEBKIT) {
			innerWidth = window.innerWidth;
			innerHeight	= window.innerHeight - 1;
		}

		if (innerWidth + scrollX > bounds.left + elDims.width) {
			left = bounds.left + 'px';
		}
		else {
			left = ((innerWidth	- elDims.width)	+ scrollX) + 'px';
		}

		if (innerHeight	+ scrollY >	bounds.top + bounds.height + elDims.height)	{
			top	= (bounds.top +	bounds.height) + 'px';
		}
		else {
			top	= (bounds.top -	elDims.height) + 'px';
		}

		element.style.left = left;
		element.style.top =	top;
	}

// select.js
function Select(options) {
	this.options = Object.extend({ choices:	10, className: '', selectedClassName: 'selected' }, options ||	{});
	this.element = document.createElement('div');
	this.element.className = this.options.className;
	Element.setStyle(this.element, { display: '', position:	'relative', top: '0', left: '0' });

	this.arrowUp = document.createElement('img');
	this.arrowUp.className = 'up-arrow';
	this.arrowUp.src = '/app/img/screen/arrow_up.gif';
	this.arrowUp.alt = 'up';
	this.arrowUp.style.display = 'none';
	this.element.appendChild(this.arrowUp);

	this.arrowDown = document.createElement('img');
	this.arrowDown.className = 'down-arrow';
	this.arrowDown.src = '/app/img/screen/arrow_down.gif';
	this.arrowDown.alt = 'down';
	this.arrowDown.style.display = 'none';
	this.element.appendChild(this.arrowDown);

	this.list = document.createElement('ul');
	this.element.appendChild(this.list);

	this.active	= false;
	this.index = undefined;
	this.sO	= undefined;
	this.vRS = undefined;
	this.vRE = undefined;

	this.onMouseMoveListener = this.onMouseMove.bind(this);
	this.onClickListener = this.onClick.bind(this);

	if (UserAgent.MSIE || UserAgent.WEBKIT)	Event.observe(this.element,	"mousewheel", this.onScrollA.bind(this));
	else if	(UserAgent.GECKO) Event.observe(this.element, "DOMMouseScroll",	this.onScrollB.bind(this));
}

Select.prototype = {
	setCallback:
	function(callback) {
		this.callback =	callback;
	},

	getElement:
	function() {
		return this.element;
	},

	setVisibleRange:
	function(vRS) {
		if (this.options.choices < this.sO.length) {
			if (vRS	< 0) {
				vRS	= 0;
			}
			else if	(vRS > this.sO.length -	this.options.choices) {
				vRS	= this.sO.length - this.options.choices;
			}
			if (vRS	== this.vRS	- 1) {
				this.removeSelectItem(this.sO[this.vRE - 1].getDOMElement());
				this.addSelectItem(this.sO[vRS].getDOMElement(), this.sO[this.vRS].getDOMElement());
			}
			else if	(vRS ==	this.vRS + 1) {
				this.removeSelectItem(this.sO[this.vRS].getDOMElement());
				this.addSelectItem(this.sO[this.vRE].getDOMElement());
			}
			else if	(vRS < this.vRS) {
				for	(var i = vRS, j	= this.vRS;	j <	this.vRE; i++, j++)	{
					Event.stopObserving(this.sO[j].getDOMElement(),	"mousemove", this.onMouseMoveListener);
					Event.stopObserving(this.sO[j].getDOMElement(),	"click", this.onClickListener);
					this.list.replaceChild(this.sO[i].getDOMElement(), this.sO[j].getDOMElement());
					Event.observe(this.sO[i].getDOMElement(), "mousemove", this.onMouseMoveListener);
					Event.observe(this.sO[i].getDOMElement(), "click", this.onClickListener);
				}
			}
			else if	(vRS > this.vRS) {
				for	(var i = (vRS +	this.options.choices) -	1, j = this.vRE	- 1; j >= this.vRS;	i--, j--) {
					Event.stopObserving(this.sO[j].getDOMElement(),	"mousemove", this.onMouseMoveListener);
					Event.stopObserving(this.sO[j].getDOMElement(),	"click", this.onClickListener);
					this.list.replaceChild(this.sO[i].getDOMElement(), this.sO[j].getDOMElement());
					Event.observe(this.sO[i].getDOMElement(), "mousemove", this.onMouseMoveListener);
					Event.observe(this.sO[i].getDOMElement(), "click", this.onClickListener);
				}
			}
			this.vRS = vRS;
			this.vRE = vRS + this.options.choices;
			this.setArrows();
		}
	},

	addSelectItem:
	function(element, nextSibiling)	{
		Event.observe(element, "mousemove", this.onMouseMoveListener);
		Event.observe(element, "click", this.onClickListener);
		if (nextSibiling !=	undefined) {
			this.list.insertBefore(element, nextSibiling);
		}
		else {
			this.list.appendChild(element);
		}
		
	},

	removeSelectItem:
	function(element) {
		this.list.removeChild(element);
		Event.stopObserving(element, "mousemove", this.onMouseMoveListener);
		Event.stopObserving(element, "click", this.onClickListener);
	},

	isActive:
	function() {
		return this.active;
	},

	onKeyPress:
	function(event)	{
		if (this.isActive()) {
			var	keyCode;
			if (UserAgent.WEBKIT) {
				keyCode	= Event.mapMacKeypressKeyCode(event.keyCode);
			}
			else {
				keyCode	= event.keyCode;
			}
			switch(keyCode)	{
				case Event.KEY_UP:
				Event.stop(event);
				this.markPrevious();
				break;
				case Event.KEY_DOWN:
				Event.stop(event);
				this.markNext();
				break;
				case Event.KEY_PAGEUP:
				Event.stop(event);
				this.pageUp();
				break;
				case Event.KEY_PAGEDOWN:
				Event.stop(event);
				this.pageDown();
				break;
				case Event.KEY_HOME:
				Event.stop(event);
				this.posFirst();
				break;
				case Event.KEY_END:
				Event.stop(event);
				this.posLast();
				break;
				case Event.KEY_ESC:
				Event.stop(event);
				this.callback();
				break;
				case Event.KEY_RETURN:
				case Event.KEY_TAB:
				if (this.selectEntry())	{
					Event.stop(event);
				}
				break;
			}
		}
	},

	markPrevious:
	function() {
		if (this.sO) {
			if (this.index != undefined) {
				Element.removeClassName(this.sO[this.index].getDOMElement(), this.options.selectedClassName);
			}
			if (this.index == undefined) {
				this.index = this.sO.length	- 1;
			}
			else if	(this.index	> 0) {
				this.index = this.index	- 1;
			}
			if (this.index < this.vRS) {
				this.setVisibleRange(this.index);
			}
			else if	(this.index	> this.vRE - 1)	{
				this.setVisibleRange((this.index - this.options.choices) + 1);
			}
			if (this.sO[this.index].getValue() != undefined) {
				Element.addClassName(this.sO[this.index].getDOMElement(), this.options.selectedClassName);
			}
		}
	},

	markNext:
	function() {
		if (this.sO) {
			if (this.index != undefined) {
				Element.removeClassName(this.sO[this.index].getDOMElement(), this.options.selectedClassName);
			}
			if (this.index == undefined) {
				this.index = 0;
			}
			else if	(this.index	< this.sO.length - 1) {
				this.index = this.index	+ 1;
			}
			if (this.index < this.vRS) {
				this.setVisibleRange(this.index);
			}
			else if	(this.index	> this.vRE - 1)	{
				this.setVisibleRange((this.index - this.options.choices) + 1);
			}
			if (this.sO[this.index].getValue() != undefined) {
				Element.addClassName(this.sO[this.index].getDOMElement(), this.options.selectedClassName);
			}
		}
	},

	pageUp:
	function() {
		if (this.index != undefined) {
			Element.removeClassName(this.sO[this.index].getDOMElement(), this.options.selectedClassName);
		}
		else {
			this.index = this.sO.length	- 1;
		}
		this.index -= this.options.choices;
		if (this.index < 0)	this.index = 0;
		if (this.sO[this.index].getValue() != undefined) {
			Element.addClassName(this.sO[this.index].getDOMElement(), this.options.selectedClassName);
		}
		this.setVisibleRange(this.vRS -	this.options.choices);
	},

	pageDown:
	function() {
		if (this.index != undefined) {
			Element.removeClassName(this.sO[this.index].getDOMElement(), this.options.selectedClassName);
		}
		else {
			this.index = 0;
		}
		this.index += this.options.choices;
		if (this.index > this.sO.length	- 1) this.index	= this.sO.length - 1;
		if (this.sO[this.index].getValue() != undefined) {
			Element.addClassName(this.sO[this.index].getDOMElement(), this.options.selectedClassName);
		}
		this.setVisibleRange(this.vRS +	this.options.choices);
	},

	posFirst:
	function() {
		if (this.index != undefined) {
			Element.removeClassName(this.sO[this.index].getDOMElement(), this.options.selectedClassName);
		}
		this.index = 0;
		if (this.sO[this.index].getValue() != undefined) {
			Element.addClassName(this.sO[this.index].getDOMElement(), this.options.selectedClassName);
		}
		this.setVisibleRange(0);
	},

	posLast:
	function() {
		if (this.index != undefined) {
			Element.removeClassName(this.sO[this.index].getDOMElement(), this.options.selectedClassName);
		}
		this.index = this.sO.length	- 1;
		if (this.sO[this.index].getValue() != undefined) {
			Element.addClassName(this.sO[this.index].getDOMElement(), this.options.selectedClassName);
		}
		this.setVisibleRange(this.sO.length	- this.options.choices);
	},

	selectEntry:
	function() {
		if (this.index != undefined) {
			this.callback(this.sO[this.index]);
			return true;
		}
		else {
			this.callback();
			return false;
		}
	},

	setSelectOptions:
	function(sO, vRS) {
	    if (this.sO) {
		for (; this.vRS	< this.vRE; this.vRS++)	{
		    this.removeSelectItem(this.sO[this.vRS].getDOMElement());
		}
	    }

	    var	maxWidth = 0;
	    for	(var i = 0;	i <	sO.length; i++)	{
		var curWidth = sO[i].getMinWidth();
		if (curWidth > maxWidth) maxWidth = curWidth;
		sO[i].getDOMElement().autocompleteIndex	= i;
	    }

	    for	(var i = 0; i < sO.length; i++) {
		sO[i].setWidth(maxWidth);
	    }

	    if (!vRS ||	vRS	< 0) {
		vRS	= 0;
	    }
	    else if	(vRS > this.sO.length -	this.options.choices) {
		vRS	= this.sO.length - this.options.choices;
	    }

	    this.index = undefined;
	    this.sO	= sO;
	    this.vRS = vRS;
	    this.vRE = this.vRS;

	    for	(; this.vRE	< this.vRS + this.options.choices && this.vRE <	this.vRS + this.sO.length; this.vRE++) {
		this.addSelectItem(sO[this.vRE].getDOMElement());
	    }

	    this.setArrows();
	    
	    if (this.options.afterDomIsUpdated)
	      this.options.afterDomIsUpdated();
	},

	selectValue:
	function(value)	{
		if (this.index != undefined) {
			Element.removeClassName(this.sO[this.index].getDOMElement(), this.options.selectedClassName);
		}
		this.index = undefined;
		if (value && this.sO) {
			for	(var i = 0;	this.index == undefined	&& i < this.sO.length; i++)	{
				if (this.sO[i].getValue() == value)	{
					this.index = i;
					Element.addClassName(this.sO[i].getDOMElement(), this.options.selectedClassName);
				}
			}
		}
	},

	getSelectedValue:
	function() {
		return (this.index != undefined) ? this.sO[this.index].getValue() :	undefined;
	},

	setArrows:
	function() {
		if (this.vRS ==	0) {
			this.arrowUp.style.display =	'none';
		}
		else {
			this.arrowUp.style.display =	'';
		}
		if (this.vRE ==	this.sO.length)	{
			this.arrowDown.style.display	= 'none';
		}
		else {
			this.arrowDown.style.display	= '';
		}
	},

	onMouseMove:
	function(event)	{
	    if (this.isActive()) {
		if (this.index >= 0) {
		    Element.removeClassName(this.sO[this.index].getDOMElement(), this.options.selectedClassName);
		}
		this.index = Event.findElement(event, 'LI').autocompleteIndex;
		if (this.sO[this.index].getValue() != undefined) {
		    Element.addClassName(this.sO[this.index].getDOMElement(), this.options.selectedClassName);
		}
	    }
	},

	onClick:
	function(event)	{
		if (this.isActive()) {
			if (this.index >= 0) {
				Element.removeClassName(this.sO[this.index].getDOMElement(), this.options.selectedClassName);
			}
			this.index = Event.findElement(event, 'LI').autocompleteIndex;
			if (this.sO[this.index].getValue() != undefined) {
				Element.addClassName(this.sO[this.index].getDOMElement(), this.options.selectedClassName);
				this.selectEntry();
			}
		}
	},

	onScrollA:
	function(event)	{
		if (this.isActive()) {
			if(event.wheelDelta	> 0) {
				this.setVisibleRange(this.vRS -	1);
			}
			else  {
				this.setVisibleRange(this.vRS +	1);
			}
			Event.stop(event);
		}
	},

	onScrollB:
	function(event)	{
		if (this.isActive()) {
			if(event.detail	< 0) {
				this.setVisibleRange(this.vRS -	1);
			}
			else  {
				this.setVisibleRange(this.vRS +	1);
			}
			Event.stop(event);
		}
	},

	activate:
	function() {
		this.active	= true;
	},

	deactivate:
	function() {
	    this.active	= false;
	    if (this.index != undefined) {
		Element.removeClassName(this.sO[this.index].getDOMElement(), this.options.selectedClassName);
	    }
	    this.index = undefined;
	}
}

function SimpleSelectItem(text)	{
	this.text =	text;
}

SimpleSelectItem.prototype = {
	getDOMElement:
	function() {
		if (this.DOMElement	== undefined) {
			this.DOMElement	= document.createElement('li');
			this.DOMElement.appendChild(document.createTextNode(this.text));
			if (!SimpleSelectItem.wtc) {
				var div = document.createElement('div');
				div.className = 'auto-complete';
				Element.setStyle(div, { position: 'absolute', left: '0', top: '0', visibility: 'hidden' });
				document.body.appendChild(div);
				SimpleSelectItem.wtc = document.createElement('ul');
				div.appendChild(SimpleSelectItem.wtc);
			}
			SimpleSelectItem.wtc.appendChild(this.DOMElement);
			this.minWidth =	this.DOMElement.offsetWidth - 33;
			SimpleSelectItem.wtc.removeChild(this.DOMElement);
		}
		return this.DOMElement;
	},

	getMinWidth:
	function() {
		if (this.DOMElement	== undefined) {
			this.getDOMElement();
		}
		return this.minWidth;
	},

	setWidth:
	function(width)	{
		if (this.DOMElement	== undefined) {
			this.getDOMElement();
		}
		Element.setStyle(this.DOMElement, {	width: width + 'px'	});
	},

	getValue:
	function() {
		return this.text;
	}
}


// autocompleter.js
function Autocompleter(element,	options) {
    this.options = Object.extend({ minTokenLength: 1, delimiters: [',',	';', String.fromCharCode(255 * 256 + 12), String.fromCharCode(48 * 256 + 1), '\n'],	insertString: ', ',	delay: 50 }, options ||	{});
    this.ignoreMinTokenLengthOn	= $A(this.options.ignoreMinTokenLengthOn);

    this.element = $(element);
    this.isTextfield = this.element.tagName == 'INPUT';

    Event.observe(this.element,	'blur',	this.onBlur.bindAsEventListener(this), true);
    Event.observe(this.element,	(UserAgent.MSIE	|| UserAgent.KHTML || UserAgent.WEBKIT)	? 'keydown'	: 'keypress', this.onKeyPress.bindAsEventListener(this));
    Event.observe(this.element,	'keyup', this.onKeyUp.bindAsEventListener(this));

    this.suggestor = this.options.suggestor;

    this.select = this.options.select;
    this.select.setCallback(this.insert.bind(this));
    Event.observe(this.select.getElement(), 'mousedown', this.blockBlur.bindAsEventListener(this), true);

    this.popup = this.options.popup;
    if (this.popup)	{
	this.popup.setContent(this.select.getElement());
    }

    this.active	= false;
    this.blurBlocked = false;
    this.currentToken =	undefined;
    this.requestedToken	= undefined;
    this.triggerTimeout	= undefined;
}

Autocompleter.prototype	= {
	isActive:
	function() {
		return this.active;
	},

	onKeyPress:
	function(event)	{
		if (this.isActive()) {
			this.select.onKeyPress(event);
		}
		else {
			var	keyCode;
			if (UserAgent.WEBKIT) {
				keyCode	= Event.mapMacKeypressKeyCode(event.keyCode);
			}
			else {
				keyCode	= event.keyCode;
			}
			switch(keyCode)	{
				case Event.KEY_PAGEUP:
				case Event.KEY_PAGEDOWN:
				Event.stop(event);
				this.triggerUpdate(this.ignoreMinTokenLengthOn.detect(function(o) {	return o ==	keyCode; })	!= undefined);
				break;
				case Event.KEY_UP:
				case Event.KEY_DOWN:
				if (this.isTextfield) {
					Event.stop(event);
					this.triggerUpdate(this.ignoreMinTokenLengthOn.detect(function(o) {	return o ==	keyCode; })	!= undefined);
				}
				break;
				default:
				this.select.onKeyPress(event);
			}
		}
	},

	onKeyUp:
	function(event)	{
		if (this.isActive()) {
			switch(event.keyCode) {
				case Event.KEY_UP:
				case Event.KEY_DOWN:
				case Event.KEY_PAGEUP:
				case Event.KEY_PAGEDOWN:
				case Event.KEY_HOME:
				case Event.KEY_END:
				case Event.KEY_RETURN:
				case Event.KEY_TAB:
				case Event.KEY_ESC:
				break;
				default:
				this.triggerUpdate();
				break;
			}
		}
		else {
			switch(event.keyCode) {
				case Event.KEY_LEFT:
				case Event.KEY_RIGHT:
				case Event.KEY_UP:
				case Event.KEY_DOWN:
				case Event.KEY_PAGEUP:
				case Event.KEY_PAGEDOWN:
				case Event.KEY_RETURN:
				case Event.KEY_TAB:
				case Event.KEY_ESC:
				break;
				default:
				this.triggerUpdate(this.ignoreMinTokenLengthOn.detect(function(o) {	return o ==	event.keyCode; }) != undefined);
				break;
			}
		}
	},

	triggerUpdate:
	function(force)	{
		if (this.triggerTimeout) clearTimeout(this.triggerTimeout);
		this.triggerTimeout	= setTimeout(this.updateSuggestions.bind(this, force), this.options.delay);
	},

	updateSuggestions:
	function(force)	{
	    var	token =	this.getToken();
	    if (token.end == token.caretPos && (token.end - token.start >= this.options.minTokenLength || force)) {
		var newToken = token.value.slice(token.start, token.caretPos);
		if (newToken !=	this.requestedToken	&& newToken	!= this.currentToken) {
		    this.requestedToken	= newToken;
		    this.suggestor.getSuggestions(this.requestedToken, this.receiveSuggestions.bind(this));
		}
	    }
	    else if (this.isActive()) {
		this.deactivate();
	    }
	},

	receiveSuggestions:
	function(token,	suggestions) {
		if (token == this.requestedToken &&	suggestions.length > 0)	{
			var	selectedValue;
			if (this.isActive()) {
				selectedValue =	this.select.getSelectedValue();
				this.deactivate();
			}
			this.select.setSelectOptions(suggestions, 0);
			this.select.selectValue(selectedValue);
			this.activate();
			this.requestedToken	= '';
			this.currentToken =	token;
		}
		else if	(this.isActive()) {
			this.deactivate();
		}
	},

	onBlur:
	function(event)	{
		if (this.blurBlocked) {
			Event.stop(event);
			this.blurBlocked = false;
			this.element.focus();
		}
		else {
			this.deactivate();
		}
	},

	blockBlur:
	function(event)	{
		Event.stop(event);
		this.blurBlocked = true;
	},

	insert:
	function(selectItem) {
		var text;
		if (selectItem) {
			text = selectItem.getValue();
		}
		this.deactivate();
		if (text !=	undefined) {
		var token = this.getToken(true);
		var prefix = token.value.slice(0, token.start);
		var postfix = token.value.slice(token.end);
		var insertDelimiter = !this.options.insertDelimiterOnlyAtEnd ||	postfix.replace(/\s*/, '').length == 0;
		this.element.value = prefix + text + (insertDelimiter ?	this.options.insertString : '') + postfix;
		var caretPos = token.start + text.length + (insertDelimiter ? this.options.insertString.length : 0);
		Form.Element.setSelectionRange(this.element, caretPos, caretPos);
	    }
	    this.element.focus();
	},

	getToken:
	function(last) {
		var	newValue = Form.Element.value(this.element);
		if (!last && (this.value !=	newValue ||	this.selectionStart	!= Form.Element.selectionStart(this.element) ||	this.selectionEnd != Form.Element.selectionEnd(this.element))) {
			this.value = newValue;
			this.selectionStart	= Form.Element.selectionStart(this.element);
			this.selectionEnd =	Form.Element.selectionEnd(this.element);

			var	prefix = this.value.slice(0, this.selectionStart);
			var	postfix	= this.value.slice(this.selectionEnd);

			var	delimPosPrefix = -1;
			for	(var i = 0;	i <	this.options.delimiters.length;	i++) {
				var	pos	= prefix.lastIndexOf(this.options.delimiters[i]);
				if (pos	> delimPosPrefix) delimPosPrefix = pos;
			}

			var	delimPosPostfix	= postfix.length;
			for	(var i = 0;	i <	this.options.delimiters.length;	i++) {
				var	pos	= postfix.indexOf(this.options.delimiters[i]);
				if (pos	>= 0 &&	pos	< delimPosPostfix) delimPosPostfix = pos;
			}

			this.token = { changed:	true, start: this.selectionStart - prefix.slice(delimPosPrefix + 1).replace(/^\s*/,'').length,
						   end:	this.selectionEnd +	postfix.slice(0, delimPosPostfix).replace(/\s*$/,'').length,
						   caretPos: this.selectionStart,
						   value: this.value };
		}
		else {
			this.token.changed = false;
		}
		return this.token;
	},

	activate:
	function() {
		this.select.activate();
		if (this.popup)	{
			var	token =	this.getToken();
			var	bounds;
			var	iPos = this.element.cumulativeOffset();
			if (this.isTextfield) {
				bounds = Form.Element.getRangeBounds(this.element, token.start,	token.caretPos);
				bounds.left	+= iPos[0] - 1;
				bounds.top += iPos[1];
			}
			else {
				var dims = Element.getDimensions(this.element);
				bounds = {
					left: iPos[0] + 1,
					top: iPos[1],
					width: dims.width,
					height: dims.height + 1
				}
			}
			this.popup.show(bounds);
		}
		this.active	= true;
	},

	deactivate:
	function() {
		this.active	= false;
		this.blurBlocked = false;
		this.currentToken =	undefined;
		this.requestedToken	= undefined;

		if (this.triggerTimeout) clearTimeout(this.triggerTimeout);
		if (this.popup)	this.popup.hide();
		this.select.deactivate();
	}
}

function DependentSelect(args) {
	this.map			= args['map'];
	this.mapKeys		= args['mapKeys'];

	this.masterSelect		= document.getElementById(args['masterSelect']);
	this.initialInput		= document.getElementById(args['dependentSelect']);
	this.container		= this.initialInput.parentNode;
	this.currentInput		= this.initialInput;
	this.inputs			= {};
	this.labels			= [];
	if (args['labels'])	{
		for	(var i = 0;	i <	args['labels'].length; i++)	{
			var	label_id = args['labels'][i];
			var	label =	document.getElementById(label_id);
			if (label) this.labels.push(label);
		}
	}
	this.noKeyOption	= args['noKeyOption'] || {};
	this.undefinedOption	= args['undefinedOption'] || {};
	this.noOption		= args['noOption'] || {};
	this.singleOption		= args['singleOption'] || {};
	this.multipleOptions	= args['multipleOptions'] || {};
	this.onChangeListener = args['onChange'];

	this.onchange();
	Event.observe(this.masterSelect, 'change', this.onchange.bind(this));
};

DependentSelect.prototype.onchange =
	function(event)	{
		var	value = this.masterSelect.value;
		var key = 'key:' + value;
		var	nextInput;
		var	hideLabel;
		var hideElements = [];
		var showElements = [];
		if (!value) {
			if (!this.inputs[key]) {
				if (this.noKeyOption.hidden) this.inputs[key] = this.createHiddenInput();
				else this.inputs[key] = this.initialInput;
			}
			hideLabel = this.noKeyOption.hidden;
			hideElements = hideElements.concat(this.noKeyOption.hideElements || []);
			showElements = showElements.concat(this.noKeyOption.showElements || []);
		}
		else if (!this.map[value]) {
			if (!this.inputs[key]) {
				if (this.undefinedOption.hidden) this.inputs[key] = this.createHiddenInput();
				else this.inputs[key] = this.initialInput;
			}
			hideLabel = this.undefinedOption.hidden;
			hideElements = hideElements.concat(this.undefinedOption.hideElements || []);
			showElements = showElements.concat(this.undefinedOption.showElements || []);
		}
		else if	(this.map[value].length == 0) {
			if (!this.inputs[key]) {
				this.inputs[key] = this.createHiddenInput();
			}
			hideLabel =	true;
			hideElements = hideElements.concat(this.noOption.hideElements || []);
			showElements = showElements.concat(this.noOption.showElements || []);
		}
		else if	(this.map[value].length == 1)	{
			if (!this.inputs[key]) {
				if (this.singleOption.hidden) this.inputs[key] = this.createHiddenInput(this.mapKeys ? this.map[value][0][this.mapKeys.value] : this.map[value][0]);
				else this.inputs[key] = this.createSelect(value, this.singleOption);
			}
			hideLabel =	this.singleOption.hidden;
			hideElements = hideElements.concat(this.singleOption.hideElements || []);
			showElements = showElements.concat(this.singleOption.showElements || []);
		}
		else if (this.map[value].length > 1) {
			if (!this.inputs[key]) {
				this.inputs[key] = this.createSelect(value, this.multipleOptions);
			}
			hideLabel =	false;
			hideElements = hideElements.concat(this.multipleOptions.hideElements || []);
			showElements = showElements.concat(this.multipleOptions.showElements || []);
		}
		if (this.currentInput != this.inputs[key])	{
			var	visibilityAttribute	= hideLabel	? 'hidden' : '';
			for	(var i = 0;	i <	this.labels.length;	i++) {
				this.labels[i].style.visibility	= visibilityAttribute;
			}
			for (var i = 0; i < hideElements.length; i++) {
				$(hideElements[i]).style.visibility = 'hidden';
			}
			for (var i = 0; i < showElements.length; i++) {
				$(showElements[i]).style.visibility = 'visible';
			}
			this.container.replaceChild(this.inputs[key], this.currentInput);
			this.currentInput =	this.inputs[key];
		}
		if (this.onChangeListener) this.onChangeListener(value);
	};

DependentSelect.prototype.createHiddenInput =
	function(value) {
		var input = document.createElement('input');
		input.type = 'hidden';
		input.id = this.initialInput.id;
		input.name = this.initialInput.name;
		input.value = value;
		return input;
	};

DependentSelect.prototype.createSelect =
	function(key, selectOptions) {
	var	currentValue	= this.currentInput.value;
	var	select		= document.createElement('select');
	select.id		= this.initialInput.id;
	select.name		= this.initialInput.name;
	select.className	= this.initialInput.className;
	select.style.width	= this.initialInput.style.width;
	select.tabIndex = this.initialInput.tabIndex;
	var	i =	0;
	if (selectOptions.emptyOption) {
		select.options[i] =	new	Option(selectOptions.emptyOption, '');
		i++;
	}
	var	selectedIndex =	0;
	for	(var j = 0;	j <	this.map[key].length; j++, i++)	{
		var	value;
		var	label;
		if (this.mapKeys) {
		value =	this.map[key][j][this.mapKeys.value];
		label =	this.map[key][j][this.mapKeys.label];
		}
		else {
		value =	this.map[key][j];
		label =	this.map[key][j];
		}
		// we cant use the selected	paramter of	the	constructor, since IE magically	selects	previous option
		select.options[i] =	new	Option(label, value, false,	false);
		if (value == currentValue) {
		selectedIndex =	i;
		}
	}
	select.selectedIndex = selectedIndex;
	return select;
	};

var Overlay = {
	start:
	function(options) {
		this.options = options || {};
		if (UserAgent.MSIE)	{
			var	selects	= document.getElementsByTagName('select');
			for	(i = 0;	i <	selects.length;	i++) {
				selects[i].style.visibility	= 'hidden';
			}
		}
		if (!this.overlay) {
			this.refreshDisplayEL = this.refreshDisplay.bind(this);
			this.overlay = document.createElement('div');
			this.overlay.id = 'modal-background';
			this.overlay.className = 'modal-background';
			document.body.appendChild(this.overlay);
		}
		Element.setStyle(this.overlay, { visibility: 'hidden', width: '0', height: '0', display: '' });

		this.refreshDisplay();
		Element.setStyle(this.overlay, { visibility: '' });		

		Event.observe(window, 'resize', this.refreshDisplayEL);
		Event.observe(window, 'scroll', this.refreshDisplayEL);
	},
	
	stop:
	function() {
		Event.stopObserving(window, 'resize', this.refreshDisplayEL);
		Event.stopObserving(window, 'scroll', this.refreshDisplayEL);
		Element.hide(this.overlay);
		if (UserAgent.MSIE)	{
			var	selects	= document.getElementsByTagName('select');
			for	(i = 0;	i <	selects.length;	i++) {
				selects[i].style.visibility	= '';
			}
		}
	},

	refreshDisplay:
	function() {
		var	vB = Position.getViewPortBounds();
		Element.setStyle(this.overlay, { width: (vB.left + vB.width) + 'px', height: (vB.top + vB.height) + 'px' });
		if (this.options.dialog) {
			var left = (vB.left + ((vB.width - this.options.dialog.offsetWidth) / 2));
			var top = (vB.top + ((vB.height - this.options.dialog.offsetHeight) / 2));
			if (left < 0) left = 0;
			if (top < 0) top = 0;
			Element.setStyle(this.options.dialog, { left:  35 + '%', top: 25 + '%' });
		}
	}
};

/*
Created	By:	Chris Campbell
Website: http://particletree.com
Date: 2/1/2006

Inspired by	the	lightbox implementation	found at http://www.huddletogether.com/projects/lightbox/

Stripped and adapted by	Michael	Otto.
http://www.epublica.de

Rewritten by Lorenz	Knies.
http://www.epublica.de
*/

// callback
var	do_confirm;

function cool_confirm(args)	{
	if (!args['id']) {
		if (!cool_confirm.initalized) {
			cool_confirm.initalized = true;
			cool_confirm.okLabel = document.getElementById('modal-window:ok_label').innerHTML;
			cool_confirm.cancelLabel = document.getElementById('modal-window:cancel_label').innerHTML;
		}
		else {
			document.getElementById('modal-window:title').innerHTML = '';
			document.getElementById('modal-window:text').innerHTML = '';
			document.getElementById('modal-window:ok_label').innerHTML = cool_confirm.okLabel;
			document.getElementById('modal-window:cancel_label').innerHTML = cool_confirm.cancelLabel;
			//document.getElementById('modal-window:title').style.backgroundImage = 'url(/app/img/screen/icn_help.gif)';
		}
	}
	var	id		= args['id'] ||	'modal-window';
	var	element	= args['element'];
	var	op		= args['op'];
	var	href		= args['href'];
	var	callback	= args['callback'];

	do_confirm = _do_confirm;

	var	modalWindow	= document.getElementById(id);
	modalWindow.className =	'modal-window';
	Element.setStyle(modalWindow, {	visibility:	'hidden', position:	'fixed',	left:  35 + '%', top: 25 + '%' , display: '' });
	if (modalWindow.parentNode != document.body) document.body.appendChild(modalWindow);

	if (args['icon']) {
		var	div	= document.getElementById(id + ':title');
		if (div) {
			div.style.backgroundImage =	'url(' + args['icon'] +	')';
		}
	}
	for	(var k in {	title: true, text: true, ok_label: true, cancel_label: true	}) {
		if (args[k]) {
			var	div	= document.getElementById(id + ':' + k);
			if (div) {
				div.innerHTML =	args[k];
			}
		}
	}

	Overlay.start({ dialog: modalWindow });
	Element.setStyle(modalWindow, {	visibility:	'' });

	var firstButton = modalWindow.getElementsByTagName('button')[0];
	if (firstButton) firstButton.focus();

	return false;

	function _do_confirm(returncode) {
		Element.hide(modalWindow);
		Overlay.stop();
		if (returncode)	{		
			if (callback) {
				callback(returncode);
			}
			else if	(element) {
				if (element.tagName	== 'A')	{
					var	uriComponent;
					var	form = modalWindow.getElementsByTagName('form')[0];
					if (form) {
						uriComponent = Form.serialize(form);
					}
					else {
						uriComponent = '';
					}
					location.href = element.href + '&' + uriComponent;
				}
				else if	(element.tagName == 'BUTTON' || element.tagName == 'INPUT') {
					if (element.type == 'submit') {
						if (op)	element.form.op.value = op;
						element.form.submit();
					}
					else if	(element.type == 'button' && href) {
						location.href = href;
					}
				}
			}
		}
	}
}


function Preview2(args) {
	this.callback = args['callback'];
	this.dialog = $(args['dialog']);
	this.container = $(this.dialog.id + ':container');

	if (Preview.innerHTML[this.container.id]) this.container.innerHTML = Preview.innerHTML[this.container.id];

	this.cancelEL = this.cancel.bind(this);
	this.sendEL = this.send.bind(this);
	if ($(this.dialog.id + ':cancel')) {
		Event.observe(this.dialog.id + ':cancel', 'click', this.cancelEL);
	}
	if ($(this.dialog.id + ':send')) {
		Event.observe(this.dialog.id + ':send', 'click', this.sendEL);
	}
	if ($(this.dialog.id + ':close')) {
		Event.observe(this.dialog.id + ':close', 'click', this.cancelEL);
	}

	document.body.appendChild(this.dialog);
	new Ajax.Request(args.url, { parameters: args.parameters, onComplete: this.onComplete.bind(this) });
	Element.setStyle(this.dialog, { display: '', visibility: 'hidden' });
	Overlay.start({ dialog: this.dialog });
	Element.setStyle(this.dialog, { visibility: '' });	
}

Preview2.innerHTML = {};

Preview2.prototype = {
	cancel:
	function() {
		Element.hide(this.dialog);
		Overlay.stop();
	if ($(this.dialog.id + ':cancel')) {
		Event.stopObserving(this.dialog.id + ':cancel', 'click', this.cancelEL);
	}
	if ($(this.dialog.id + ':send')) {
		Event.stopObserving(this.dialog.id + ':send', 'click', this.sendEL);
	}
	if ($(this.dialog.id + ':close')) {
		Event.stopObserving(this.dialog.id + ':close', 'click', this.cancelEL);
	}
	},
	
	send:
	function() {
		if (this.loaded) {
			this.cancel();
			this.callback();
		}
	},

	onComplete:
	function(transport) {
		if (!Preview.innerHTML[this.container.id]) Preview.innerHTML[this.container.id] = this.container.innerHTML;
		Element.update(this.container, transport.responseText);
		Overlay.refreshDisplay();
		this.loaded = true;
	}
}


function Preview(args) {
	this.callback = args['callback'];
	this.dialog = $(args['dialog']);
	this.container = $(this.dialog.id + ':container');

	if (Preview.innerHTML[this.container.id]) this.container.innerHTML = Preview.innerHTML[this.container.id];

	this.cancelEL = this.cancel.bind(this);
	this.sendEL = this.send.bind(this);
	if ($(this.dialog.id + ':cancel')) {
		Event.observe(this.dialog.id + ':cancel', 'click', this.cancelEL);
	}
	if ($(this.dialog.id + ':send')) {
		Event.observe(this.dialog.id + ':send', 'click', this.sendEL);
	}
	if ($(this.dialog.id + ':close')) {
		Event.observe(this.dialog.id + ':close', 'click', this.cancelEL);
	}

	document.body.appendChild(this.dialog);
//	new Ajax.Request(args.url, { parameters: args.parameters, onComplete: this.onComplete.bind(this) });
	Seam.Component.getInstance("inviteAction").processRenderPreview(args.parameters,this.onComplete.bind(this));
	//this.onComplete.bind(this.container.innerHTML);
	Element.setStyle(this.dialog, { display: '', visibility: 'hidden' });
	Overlay.start({ dialog: this.dialog });
	Element.setStyle(this.dialog, { visibility: '' });
	//this.onComplete.bind(this);	
}

Preview.innerHTML = {};

Preview.prototype = {
	cancel:
	function() {
		Element.hide(this.dialog);
		Overlay.stop();
	if ($(this.dialog.id + ':cancel')) {
		Event.stopObserving(this.dialog.id + ':cancel', 'click', this.cancelEL);
	}
	if ($(this.dialog.id + ':send')) {
		Event.stopObserving(this.dialog.id + ':send', 'click', this.sendEL);
	}
	if ($(this.dialog.id + ':close')) {
		Event.stopObserving(this.dialog.id + ':close', 'click', this.cancelEL);
	}
	},
	
	send:
	function() {
		if (this.loaded) {
			this.cancel();
			this.callback();
		}
	},

	onComplete:
	function(transport) {
		if (!Preview.innerHTML[this.container.id]){ 
			Preview.innerHTML[this.container.id] = this.container.innerHTML;
			//alert("APPEND");
			//Preview.innerHTML[this.container.id] = transport;
			}
			//else{alert(transport);*/}
			//alert(transport.responseText);
		Element.update(this.container, transport);
		//Element.update(this.container, transport);
		Overlay.refreshDisplay();
		this.loaded = true;
	}
}



function SharedData(indexId ,args) {
	this.prefix	= args;
    this.cbAll = document.getElementById(this.prefix + ':all');
	
	var saveButton = document.getElementById(this.prefix + ':save_button');
	if (saveButton) {
		Event.observe(saveButton, 'click', this.onSubmit.bind(this));
	}

	this.boxRefreshListener	= this.boxRefresh.bindAsEventListener(this);
	this.toggles = {};
	this.expanders = {};
	this.divs =	{};

	Event.observe(this.cbAll, 'click', this.checkAll.bind(this));
	for (var i = 0;	i < this.groups.length;	i++) {
	    var	group =	this.groups[i];
	    this.toggles[group]	= document.getElementById(indexId +	':toggle_' + group);
	    this.expanders[group] = document.getElementById(indexId	+ ':expander_' + group);
	    this.divs[group] = document.getElementById(indexId + ':div_' + group);

	    Event.observe(document.getElementById(this.prefix + ':'+group), 'click', this.checkGroup.bind(this, group));
	    Event.observe(this.toggles[group], 'click',	this.toggle.bind(this, group));
	}
	Event.observe(document.getElementById(this.prefix + ':birth_date'), 'click', this.checkBday.bind(this));
	Event.observe(document.getElementById(this.prefix + ':birth_year'), 'click', this.checkByear.bind(this));

	for (var group in this.inputs) {
	    for	(var j = 0; j <	this.inputs[group].length; j++)	{
		Event.observe(document.getElementById(this.prefix + ':'+this.inputs[group][j]), 'click', this.boxRefreshListener);
	    }
	}

	var saveDefaultsButton = document.getElementById(indexId + ':save_as_defaults');
	if (saveDefaultsButton)	Event.observe(saveDefaultsButton, 'click', this.saveAsDefaults.bindAsEventListener(this));

	this.boxRefresh();
}

SharedData.prototype = {
	groups:	["business","private","im"],
	inputs:	{"private":	["email_p","city_p","province_p","country_p","address_p","phone_private","fax_p","misc2"],
		 "business":	["email","address_business","phone_business","fax_business","phone_mobile"],
		 "im":		["im_icq","im_msn","im_aim","im_yahoo","im_skype","misc1", "misc3"],
		 "various":	["birth_date","birth_year","allow_message"]},

	checkAll:
	function() {
	    var onoff = this.cbAll.checked;
	    for (var group in this.inputs) {
		for (var i = 0;	i < this.inputs[group].length; i++) {
		    document.getElementById(this.prefix + ':' + this.inputs[group][i]).checked = onoff;
		}
	    }
	    this.boxRefresh();
	},

	checkGroup:
	function(group)	{
	    var onoff = document.getElementById(this.prefix + ':'+group).checked
	    for (var i = 0; i < this.inputs[group].length; i++) {
		document.getElementById(this.prefix + ':'+this.inputs[group][i]).checked =	onoff;
	    }
	    this.boxRefresh();
	},

	checkBday:
	function() {
	    if (document.getElementById(this.prefix + ':birth_year').checked) {
		document.getElementById(this.prefix + ':birth_year').checked = document.getElementById(this.prefix + ':birth_date').checked;
	    }
	},

	checkByear:
	function() {
	if (document.getElementById(this.prefix + ':birth_year').checked == 1)
	document.getElementById(this.prefix + ':birth_date').checked =	1;
	},

	boxRefresh:
	function() {
	    var allChecked = true;
	    for	(var i = 0;	i <	this.groups.length;	i++) {
		var	group =	this.groups[i];
		var	status = this.mayToggle(group);
		var allChecked = allChecked && status[1];
		document.getElementById(this.prefix + ':'+group).checked =	status[1];
		if (status[0]) {
		    this.toggles[group].style.cursor = 'pointer';
		    this.set_expander(this.expanders[group], Element.visible(this.divs[group]));
		}
		else {
		    if (!Element.visible(this.divs[group]))	{
			this.blindDown(this.divs[group]);
		    }
		    this.toggles[group].style.cursor = 'auto';
		    this.unset_expander(this.expanders[group]);
		}
	    }
	    var	status = this.mayToggle('various');
	    allChecked = allChecked && status[1];
	    this.cbAll.checked = allChecked;
	    this.set_ajax_state_none();
	},

	toggle:
	function(group)	{
	if (Element.visible(this.divs[group])) {
		if (this.mayToggle(group)[0]) {
		this.blindUp(this.divs[group]);
		this.set_expander(this.expanders[group], false);
		}
	}
	else {
		this.blindDown(this.divs[group]);
		this.set_expander(this.expanders[group], true);
	}
	},

	mayToggle:
	function(group)	{
	var	allChecked = true;
	var	allUnchecked = true;
	for	(var j = 0;	j <	this.inputs[group].length; j++)	{
		allChecked = allChecked	&& document.getElementById(this.prefix + ':'+this.inputs[group][j]).checked;
		allUnchecked = allUnchecked	&& !document.getElementById(this.prefix + ':'+this.inputs[group][j]).checked;
	}
	return [(allChecked	|| allUnchecked), allChecked, allUnchecked];
	},

	blindUp:
	function(element) {
	Effect.BlindUp(element,	{ duration:	0.3, afterFinish: function() { this.blocked	= false; }.bind(this) });
	},

	blindDown:
	function(element) {
	Effect.BlindDown(element, {	duration: 0.3, afterFinish:	function() { this.blocked =	false; }.bind(this)	});
	},

	onSubmit:
	function(event)	{
	    Event.stop(event);
	    if (document.getElementById(this.prefix	+ ':global_settings_warning')) Effect.BlindUp(this.prefix +	':global_settings_warning',	{ duration:	0.3	});
	    this.set_ajax_state_waiting();
	   this.set_ajax_state_done();
	    new	Ajax.Request('',  { method: '', parameters: '',
		onComplete: function() { this.set_ajax_state_done(); }.bind(this)
										     } );
	},

	saveAsDefaults:
	function (event) {
	Event.stop(event);
	this.set_ajax_state_waiting('ajax_state_save_as_defaults');
	var	parameters = '';
	for	(var group in this.inputs) {
		for	(var i = 0;	i <	this.inputs[group].length; i++)	{
		if (document.getElementById(this.prefix + ':'+this.inputs[group][i]).checked) {
			parameters += '&' +	this.inputs[group][i] +	'=1';
		}
		}
	}
	new	Ajax.Request('',
		{ method:	  '',
		  parameters: '',
		  onComplete: function() { this.set_ajax_state_none('ajax_state_save_as_defaults');	}.bind(this)
	});
	},

	set_ajax_state_none:
	function(ajaxStateId) {
	var	ajaxState =	document.getElementById(this.prefix	+ ':ajax_state');
	if (ajaxState) {
		setTimeout(function() {
		ajaxState.src =	'/app/img/screen/transparent_r1.gif';
		}, 800);
	}
	if (ajaxState) {
		//		ajaxState.src =	'/img/screen/transparent_r1.gif';
	}
	},

	set_ajax_state_done:
	function(ajaxStateId) {
	var	ajaxState =	document.getElementById(this.prefix	+ ':ajax_state');
	if (ajaxState) {
		setTimeout(function() {
		ajaxState.src =	'/app/img/screen/saved_icon.png';
		}, 800);
	}
	},


	set_ajax_state_waiting:
	function(ajaxStateId) {
	var	ajaxState =	document.getElementById(this.prefix	+ ':ajax_state');
	if (ajaxState) {
		ajaxState.src="/app/img/ajax_waiting.gif";
	}
	},

	set_expander:
	function(expander, expanded) {
	if (expanded) {
		expander.src='/app/img/list_minus.png';
	}
	else {
		expander.src='/app/img/list_plus.png';
	}
	},

	unset_expander:
	function(expander) {
	expander.src="/app/img/screen/transparent_r1.gif";
	}
}

function ContextHelp(args) {
	Element.setStyle(args['triggerId'], { cursor: 'help' });
	var eventname = args['eventName'] ? args['eventName'] : 'click';
	Event.observe(args['triggerId'], eventname, function(e) {
		Event.stop(e);
		document.getElementById('context-window-help:help-html').innerHTML = args['helpHTML'];
		ContextWindow({ id: 'context-window-help', alignTo: args['triggerId'], xOffset: 8, yOffset: document.getElementById(args['triggerId']).offsetHeight + 8 + (args['yOffset'] || 0)});
		}.bindAsEventListener(this));
}

function ContextWindow(args) {
	var	id		= args['id'] ||	'context-window';
	var alignTo = $(args['alignTo']);

	if (ContextWindow.alignTo && ContextWindow.alignTo == alignTo) { ContextWindow.hide(); return; }
	if (ContextWindow.alignTo && ContextWindow.alignTo != alignTo) { ContextWindow.hide(); }
	ContextWindow.alignTo = alignTo;
	
	var cw = document.getElementById(id);
	if (cw.parentNode != document.body) {
	    document.body.appendChild(cw);
	    Element.setStyle(cw, { position: 'absolute'	});
	}

	if (!ContextWindow.windowObserver) {
		Event.observe(document, 'click', ContextWindow.hide);
		ContextWindow.windowObserver = true;
	}
	if (!ContextWindow.observers[id]) {
		Event.observe(cw, 'click', function(e) {
			if (e.stopPropagation) {
				e.stopPropagation();
			}
			else {
				e.cancelBubble = true;
			}
		}.bindAsEventListener(this));
	    ContextWindow.observers[id] = true;
	}

	if (args['update_function']) {
	    args['update_function'](cw,	args);
	}

	var pos = ContextWindow.alignTo.cumulativeOffset();
	pos[0] += args['xOffset'] || 0;
	pos[1] += args['yOffset'] || 0;
	if (pos[0] > 800) {
		pos[0] -= 140;
	}
	ContextWindow.visibleWindow = cw;
	Element.setStyle(cw, { left: (pos[0] - 10) + 'px', top: (pos[1] - 10) + 'px' });
	Effect.Appear(cw, {	duration: 0.3 });
}

ContextWindow.observers = {};

ContextWindow.hide = function() {
    if (ContextWindow.visibleWindow) {
		ContextWindow.visibleWindow.style.display = 'none';
		ContextWindow.visibleWindow = null;
		ContextWindow.alignTo = null;
    }
};

ContextWindow.updateSkypeWindow	= function(cw, args) {
	var as = cw.getElementsByTagName('a');
	for (var i = 0;	i < as.length; i++) {
	    var href = as[i].href;
	    as[i].href = 'skype:' + args['im_skype'] + href.slice(href.lastIndexOf('?'));
	}
}

var FormManagers = {};

function FormManager(args) {
	this.onFocusEL		= this.onFocus.bindAsEventListener(this);
	this.onBlurEL		= this.onBlur.bindAsEventListener(this);

	FormManagers[args['form_id']] = this;
	this.form = document.getElementById(args['form_id']);

	this.checks = [];
	this.hints = {};
	this.observedInputs = {};

	this.addChecks(args['checks'] || []);
	this.addHints(args['hints'] || {});

	this.globalErrorMsg = document.getElementById(args['globalErrorMsg']);

    Event.observe(this.form, 'reset', this.onReset.bindAsEventListener(this));
    Event.observe(this.form, 'submit', this.onSubmit.bindAsEventListener(this));
}

FormManager.prototype = {
	addChecks:
	function(checks) {
		for (var i = 0; i <  checks.length; i++) {
			this.checks.push(checks[i]);
			if (checks[i].inputName) {
				if (!this.observedInputs[checks[i].inputName]) {
					this.observedInputs[checks[i].inputName] = true;
					var input = this.form[checks[i].inputName];
					Event.observe(input, 'focus', this.onFocusEL);
					Event.observe(input, 'blur', this.onBlurEL);
				}
			}
		}
	},

	addHints:
	function(hints) {
		for (var name in hints) {
			this.hints[name] = hints[name];
			if (!this.observedInputs[name]) {
				this.observedInputs[name] = true;
				var input = this.form[name];
				Event.observe(input, 'focus', this.onFocusEL);
				Event.observe(input, 'blur', this.onBlurEL);
			}
			this.setInput(name);
		}
	},

	removeInputs:
	function(names) {
		for (var i = 0; i < names.length; i++) {
			var name = names[i];
			var filteredChecks = [];
			for (var j = 0; j < this.checks.length; j++) {
				if (!this.checks[i].inputName || this.checks[i].inputName != name) filteredChecks.push(this.checks[i]);
			}
			this.checks = filteredChecks;
			delete(this.hints[name]);
			delete(this.observedInputs[name]);
			var input = this.form[name];
			if (input) {
				Event.stopObserving(input, 'focus', this.onFocusEL);
				Event.stopObserving(input, 'blur', this.onBlurEL);
			}
		}
	},

	getValue:
	function(name) {
		var input = this.form[name];

		if (!this.hints[name]) return input.value;
		var hint = this.hints[input.name].replace(/[\r\n]/g, '');
		var value = input.value.replace(/[\r\n]/g, '');
		if (value == hint) {
			return '';
		}
		else {
			return input.value;
		}
	},

	reset:
	function() {
		this.form.reset();
		this.onReset();
	},

	submit:
	function() {
		if (this.onSubmit()) {
			this.form.submit();
		}
	},
	
    onFocus:
    function(e) {
		var name = Event.element(e).name;
		if (name) this.resetInput(name);
    },
	
    onBlur:
    function(e)	{
		var name = Event.element(e).name;
		if (name) this.setInput(Event.element(e).name);
    },

	onReset:
	function(e) {
		for (var name in this.hints) {
			this.setInput(name);
		}
	},

	onSubmit:
	function(e) {
		if (this.globalErrorMsg) {
			Element.hide(this.globalErrorMsg);
		}
		for (var i = 0; i < this.checks.length; i++) {
			var input = this.checks[i].inputName ? this.form[this.checks[i].inputName] : null;
			var errorClass = this.checks[i].errorClass || 'error-form-field';
			var errorMsg = document.getElementById(this.checks[i].errorMsg || 'error-' + this.checks[i].inputName);
			if (input) Element.removeClassName(input, errorClass);
			if (errorMsg) Element.hide(errorMsg);
		}
		var submit = true;
		for (var i = 0; i < this.checks.length; i++) {
			if (!this.checks[i].onBlur && !this.checks[i].check(this, this.checks[i].inputName)) {
				submit = false;
				var input = this.checks[i].inputName ? this.form[this.checks[i].inputName] : null;
				var errorClass = this.checks[i].errorClass || 'error-form-field';
				var errorMsg = document.getElementById(this.checks[i].errorMsg || 'error-' + this.checks[i].inputName);
				if (input) Element.addClassName(input, errorClass);
				if (errorMsg) Element.show(errorMsg);
			}
		}
		if (submit) {
			for (var name in this.hints) {
				this.resetInput(name);
			}
			if (e) {
				return;
			}
			else {
				return true;
			}
		}
		else {
			if (this.globalErrorMsg) {
				Element.show(this.globalErrorMsg);
				new Effect.ScrollTo(document.body, { duration: 0.5 });
			}
			if (e) {
				Event.stop(e);
				return;
			}
			else {
				return false;
			}
		}
	},

	setInput:
	function(name) {
		var i = this.form[name];
		if (this.hints[name] && this.getValue(name) == '') {
			i.style.color = '#808080';
			i.value = this.hints[name];
			this.hints[name] = i.value;
		}
		else {
			i.style.color = '#000';
		}
	},

    resetInput:
    function(name) {
		var i = this.form[name];
		i.value = this.getValue(name);
		i.style.color = '#000';
	}
};

var FormValidation = {};

FormValidation.combineAnd = function(checks) {
	return function(formManager, name) {		
		for (var i = 0; i < checks.length; i++) {
			if (!checks[i](formManager, name)) return false;
		}
		return true;
	}
}

FormValidation.combineOr = function(checks) {
	return function(formManager, name) {		
		for (var i = 0; i < checks.length; i++) {
			if (checks[i](formManager, name)) return true;
		}
		return false;
	}
}

FormValidation.valid = function() {
	return function() {
		return true;
	}
}

FormValidation.inValid = function() {
	return function() {
		return false;
	}
}

FormValidation._validEmailAddress = function(formManager, name) {
	return /^[^@ ]+\@([^@ .]+\.)+[^@ .]+$/.test(formManager.getValue(name).strip()); 
};

FormValidation.validEmailAddress = function() {
	return FormValidation._validEmailAddress;
};

FormValidation.strippedMinLength = function(length) {
	return function(formManager, name) {
		return formManager.getValue(name).strip().length >= length;
	}
};

FormValidation.strippedMaxLength = function(length) {
	return function(formManager, name) {
		return formManager.getValue(name).strip().length <= length;
	}
};

FormValidation.matches = function(regexp) {
	return function(formManager, name) {
		return regexp.test(formManager.getValue(name));
	}
}

Form.InlineHints = function(form, hints) {
    this.form = $(form);
	this.hints = {};

    this.onFocusEL	= this.onFocus.bindAsEventListener(this);
    this.onBlurEL	= this.onBlur.bindAsEventListener(this);
    this.setInputsEL	= this.setInputs.bindAsEventListener(this);
    this.resetInputsEL	= this.resetInputs.bindAsEventListener(this)
	
	this.addHints(hints);
    Event.observe(this.form, 'reset', this.setInputsEL);
    Event.observe(this.form, 'submit', this.resetInputsEL);
};

Form.InlineHints.prototype = {
	addHints:
	function(hints) {
		for (var name in hints) {
			this.hints[name] = hints[name];
			var i = this.form[name];
			Event.observe(i, 'focus', this.onFocusEL);
			Event.observe(i, 'blur', this.onBlurEL);
		}
		this.setInputs();
	},

	removeHints:
	function(names) {
		for (var i = 0; i < names.length; i++) {
			delete(this.hints[names[i]]);
		}
	},

    onFocus:
    function(e) {
		var i = Event.element(e);
		if (this.hints[i.name]) {
			var hint = this.hints[i.name].replace(/[\r\n]/g, '');
			var value = i.value.replace(/[\r\n]/g, '');
			if (value == hint) {
				i.style.color = '#000';
				i.value	= '';
			}
		}
    },
	
    onBlur:
    function(e)	{
		var i = Event.element(e);
		this.restoreHints(i);
    },

	restoreHints:
	function( i ) {
		if (i.value	== '') {
			i.style.color =	'#808080';
			i.value	= this.hints[i.name];
			this.hints[i.name] = i.value;
		}
	},
	

    setInputs:
    function() {
   
		for (var name in this.hints) {
			var i = this.form[name];
			var hint = this.hints[i.name].replace(/[\r\n]/g, '');
			var value = i.value.replace(/[\r\n]/g, '');
			if (value == '' || value == hint) {
				i.style.color = '#808080';
				i.value = this.hints[name];
				this.hints[name] = i.value;
			}
			else {
				i.style.color = '#000';
			}
		}
    },
	
    resetInputs:
    function() {
   
		for (var name in this.hints) {
			var i = this.form[name];
			var hint = this.hints[i.name].replace(/[\r\n]/g, '');
			var value = i.value.replace(/[\r\n]/g, '');
			if (value == hint) {
				i.style.color = '#000';
				i.value = '';
				
			} 
			
			
		}
    }
};

function CurrencyConverter(select, amounts, currency) {
	this.select = $(select);
	this.amounts = amounts;
	this.currency = currency;
	Event.observe(this.select, 'change', this.convert.bind(this));
}

CurrencyConverter.prototype = {
	convert:
	function() {
		if (this.select.value == this.currency) {
			this.clearAmounts();
		}
		else {
			var parameters = 'op=convert_amounts&source_currency=' + this.currency + '&target_currency=' + this.select.value + '&amounts=' + this.amounts.join(' ');
			new Ajax.Request('/app/upgrade', { parameters: parameters,
															   onSuccess: this.onSuccess.bind(this),
															   onFailure: this.onFailure.bind(this) });
		}
    },

	onSuccess:
	function(transport) {
		var result;
		try {
			result = eval(transport.responseText);
		} catch(e) {}
		if (result) {
			this.setAmounts(result);
		}
		else {
			this.clearAmounts();
		}
    },

	onFailure:
	function(transport) {
		this.clearAmounts();
    },

	setAmounts:
	function(amounts) {
		for (var i = 0; i < this.amounts.length; i++) {
			$('AM_' + this.amounts[i]).innerHTML = amounts[this.amounts[i]];
		}
    },

	clearAmounts:
	function(amounts) {
		for (var i = 0; i < this.amounts.length; i++) {
			$('AM_' + this.amounts[i]).innerHTML = '';
		}
    }

}

function ClickPrice(select, clickprice, shop_country) {
	this.select = $(select);
	this.clickprice = clickprice;
	this.shop_country = shop_country;
	Event.observe(this.select, 'change', this.convert.bind(this));
}

ClickPrice.prototype = {
	convert:
	function() {
		if (this.select.value == this.shop_country) {
			this.clearClickprice();
		}
		else {
			var parameters = 'op=clickprice&shop_country=' + this.select.value;
			new Ajax.Request('/app/upgrade', { parameters: parameters,
				onSuccess: this.onSuccess.bind(this),
				onFailure: this.onFailure.bind(this) });
		}
    },

	onSuccess:
	function(transport) {
		var result;
		try {
			result = eval(transport.responseText);
		} catch(e) {}
		if (result) {
			this.setClickprice(result);
		}
		else {
			this.clearClickprice();
		}
    },

	onFailure:
	function(transport) {
		this.clearClickprice();
    },

	setClickprice:
	function(clickprice) {
		$('clickprice').innerHTML = clickprice.amount + ' ' + clickprice.currency;
    },

	clearClickprice:
	function() {
		$('clickprice').innerHTML = '';  //this.clickprice;
    }

}


// language_selection.js
var LanguageSelection = {
	initialize: function() {
		this.headerLanguageSelector = document.getElementById('header-language-selector');
		if (!this.headerLanguageSelector) return;
		document.body.appendChild(this.headerLanguageSelector);
		this.languageLink = document.getElementById('language-value');
		this.languageLinkMin = document.getElementById('language-value-min');
		this.languageSelectIframe = document.getElementById('language-select-iframe');
		Event.observe(this.languageLink, 'click', this.showLanguages.bindAsEventListener(this));
		Event.observe(this.languageLink, 'mouseout', this.delayedHideLanguages.bindAsEventListener(this));
		if (this.languageLinkMin) {
			Event.observe(this.languageLinkMin, 'click', this.showLanguages.bindAsEventListener(this));
			Event.observe(this.languageLinkMin, 'mouseout', this.delayedHideLanguages.bindAsEventListener(this));
		}
		Event.observe(this.headerLanguageSelector, 'mouseout', this.delayedHideLanguages.bindAsEventListener(this));
		Event.observe(this.headerLanguageSelector, 'mouseover', this.clearHideLanguages.bindAsEventListener(this));
		if (this.languageSelectIframe) {
			Element.setStyle(this.headerLanguageSelector, { visibility: 'hidden', display: '' });
			this.languageSelectIframe.style.width = this.headerLanguageSelector.offsetWidth + 'px';
			this.languageSelectIframe.style.height = this.headerLanguageSelector.offsetHeight +'px';
			Element.setStyle(this.headerLanguageSelector, { visibility: '', display: 'none' });
		}

	},

	showLanguages: function(e) {
		Event.stop(e);
		var languageLink = Event.element(e);
		languageLink.blur();
		this.clearHideLanguages();
		if (this.visible) {
			this.hideLanguages();
		}
		else {
			var leftBorder = languageLink.cumulativeOffset()[0] + languageLink.offsetWidth;
			this.headerLanguageSelector.style.left = (leftBorder - 168) + 'px';
			this.headerLanguageSelector.style.top  = '20px';
			try {
				Effect.Appear(this.headerLanguageSelector, {duration:0.3});
			} catch(e) {
				Element.show(this.headerLanguageSelector);
			}
			this.visible = true;
		}
	},

	hideLanguages: function(){
		if (this.visible) {
			try {
				Effect.Fade(this.headerLanguageSelector, {duration:0.3});
			} catch(e) {
				Element.hide(this.headerLanguageSelector);
			}
			this.visible = false;
		}
	},

	delayedHideLanguages: function(e) {
		if (this.visible){
			this.clearHideLanguages();
			this.delayID = setTimeout(this.hideLanguages.bind(this), 250);
		}
	},

	clearHideLanguages: function(){
		if (this.delayID) {
			clearTimeout(this.delayID);
			this.delayID = null;
		}
	}
};

var Header = {
	toggle: function(){
		if (!this.visible){
			this.header_min = document.getElementById('header-min');
			this.header_max = document.getElementById('header');
			this.minimize_link = document.getElementById('minimize-link');
			this.maximize_link = document.getElementById('maximize-link');
			this.visible = this.header_min.style.display == 'none' ? this.header_max : this.header_min;
		}
		if (this.visible.id == 'header'){
			new Ajax.Request('/app/network',{parameters:'op=save_header_state.minimize' } );
			this.minimize_link.style.display = 'none';
			this.maximize_link.style.display = '';
			Transition.Morph(this.header_max, this.header_min, { duration: 0.5 });
			this.visible = this.header_min;
		}
		else {
			new Ajax.Request('/app/network',{parameters:'op=save_header_state.maximize' } );
			this.maximize_link.style.display = 'none';
			this.minimize_link.style.display = '';
			Transition.Morph(this.header_min, this.header_max, { duration: 0.5 });
			this.visible						= this.header_max;
		}
	}
}

Event.observe(window, 'load', LanguageSelection.initialize.bind(LanguageSelection));

var Password = {
	calculateStrength: function(passwd, stopWords) {		
		if (passwd.length == 0) return 0;
		
		stopWords = stopWords || [];

		var tmp = passwd.toLowerCase().strip();
		for (var i = 0; i < stopWords.length; i++) {
			var sw = stopWords[i].toLowerCase().strip();
			if (tmp == sw) return 0;
		}

		var score = 0
		
		if (passwd.length < 5) {
			score += 3;
		}
		else if (passwd.length < 8) {
			score += 6;
		}
		else if (passwd.length < 10) {
			score += 12;
		}
		else {
			score += 18;
		}
		
		var lowerCaseChars = (passwd != passwd.toUpperCase());
		if (lowerCaseChars) {
			score += 1;
		}

		var upperCaseChars = (passwd != passwd.toLowerCase());
		if (upperCaseChars) {
			score += 5;
		}
		
		var chars = (upperCaseChars || lowerCaseChars);
		
		var digits = (passwd.match(/\d/g) || []).length;
		if (digits > 0) {
			score += 5;
		}
		
		if (digits > 2) {
			score += 5;
		}
		
		var specialChars = (passwd.match(/[@!#$%^&*?_~]/g) || []).length;
		if (specialChars > 0) {
			score += 5;
		}
		
		if (specialChars > 1) {
			score += 5;
		}
		
		if (upperCaseChars && lowerCaseChars) {
			score += 2;
		}
		
		if (chars && digits) {
			score += 2;
		}
		
		if (chars && digits && specialChars) {
			score += 2;
		}

		return score / 50;
	}
};

Form.TextareaLimiter = function(elementId, limit, hintId) {
	this.textarea = document.getElementById(elementId);
	this.hint = document.getElementById(hintId);
	this.hintVisible = false;
	this.limit = limit;
    Event.observe(this.textarea, 'keyup', this.limitSize.bind(this));
};

Form.TextareaLimiter.prototype = {
	limitSize:
	function() {
		if (this.textarea.value.length > this.limit) {
			this.textarea.value = this.textarea.value.substring(0, this.limit);
		}
		if (this.textarea.value.length > (this.limit-10)) {
			if (!this.hintVisible && this.hint) {
				Effect.Appear(this.hint);
				this.hintVisible = true;
			}
		}
		else {
			if (this.hintVisible && this.hint) {
				Element.hide(this.hint);
				this.hintVisible = false;
			}
		}
	}
};

function KeystrokeTracker(element, key) {
	this.cache = {};
	this.encodedKey = encodeURIComponent(key);

	Event.observe(element, 'keyup', this.track.bindAsEventListener(this));
};

KeystrokeTracker.prototype = {
	track: function(event) {
		var value = Event.element(event).value;
		if (!this.cache[value]) {
			new Ajax.Request('../../page/loggedIn/start/myStartPage.seam', { parameters: 'op=keystroke_tracking&key=' + this.encodedKey });
			this.cache[value] = true;
		}
	}
};

var LocalProfileTime = Class.create();
LocalProfileTime.prototype = {
	initialize: function(args) {
		this.id = args['id'];
		this.localHour = args['hour'];
		this.localMinute = args['minute'];
		this.localFormat = args['format'];
		
		var time = new Date();
		this.hourOffset = this.localHour - time.getHours();
		this.minuteOffset = this.localMinute - time.getMinutes();
		
		Event.observe(window, 'load', this.run.bindAsEventListener(this));
	},
	
	render: function() {
		var time = new Date();
		time.setHours(time.getHours() + this.hourOffset);
		time.setMinutes(time.getMinutes() + this.minuteOffset);
		$(this.id).innerHTML = this.formatTime(time.getHours(), time.getMinutes());
	},
	
	run: function() {
		this.render();
		new PeriodicalExecuter(this.render.bind(this), 60);
	},
	
	formatTime: function(hour, minute) {
		var amPm = '';

		if (this.localFormat == '12') {
			amPm = hour >= 12 ? ' PM' : ' AM';
			
			if (hour == 0) {
				hour = 12;
			} else if (hour > 12) {
				hour = hour - 12;
			}
		}
		
		hour = hour < 10 ? '0' + hour : hour;
		minute = minute < 10 ? '0' + minute : minute;
		
		return hour + ':' + minute + amPm;
	}
};

var RenderAdvertising = Class.create();
RenderAdvertising.prototype = {
	initialize: function(args) {
		this.set_src = args['src'];
		this.set_height = args['height'];
		this.set_width = args['width'];
	
		this.generateIframe();
	},
	
	generateIframe: function() {
		var iframe = document.createElement("iframe");
		
		iframe.setAttribute("name", "advertising-frame");
		iframe.setAttribute("id", "advertising-frame");
		iframe.setAttribute("src", this.set_src);
		iframe.setAttribute("width", this.set_width);
		iframe.setAttribute("height", this.set_height);
		iframe.setAttribute("marginHeight","0");
		iframe.setAttribute("marginWidth", "0");
		iframe.setAttribute("scrolling", "no");
		iframe.setAttribute("frameBorder", "0");
		
		$("advertising-container").appendChild(iframe);
	}
};

function CookieWhiteListing() {
	this.whiteList = ["s_vi", "sc", "s_cc", "s_sq", "screen_ssl", "screen", "ref", "_session_id"];
}
CookieWhiteListing.prototype = {
	destroyBlackListed: function() {
		if (document.cookie.indexOf("=") != -1) {
			this.getAllCookies().each((function(cookie) {
				var tmp = cookie.split("=");
				cookie_name = tmp[0].strip();
				cookie_value = tmp[1].strip();
				if (this.whiteList.indexOf(cookie_name) == -1) {
					this.removeCookie(cookie);
				}
			}).bind(this));
		}
	},  
	getAllCookies: function() {
		return document.cookie.split(';');
	},  
	removeCookie: function(cookie) {
		document.cookie = cookie+"; expires=" + new Date().toGMTString() + ";";
	}
}
// Indicator
var Indicator = {
    indicator:
    'indicator',

    count:
    0,

    increase:
    function() {
	if (Indicator.count++ == 0) {
	    if ($(Indicator.indicator)) {
		Element.setStyle(Indicator.indicator, { visibility: '' });
	    }
	    if (!Indicator.timeout) {
		Indicator.timeout = setTimeout(Indicator.checkHide, 1000);
	    }
	}
    },

    decrease:
    function() {
	if (--Indicator.count == 0) {
	    if (!Indicator.timeout) {
		if ($(Indicator.indicator)) {
		    Element.setStyle(Indicator.indicator, { visibility: 'hidden' });
		}
	    }
	}
    },

    checkHide:
    function() {
	if (Indicator.count == 0) {
	    if ($(Indicator.indicator)) {
		Element.setStyle(Indicator.indicator, { visibility: 'hidden' });
	    }
	}
	Indicator.timeout = undefined;
    }
};

// Effect Animate
Effect.Animate = Class.create();

Object.extend(Object.extend(Effect.Animate.prototype, Effect.Base.prototype), {
	initialize:
	function(elements, options) {
		this.elements = elements.map(function(e) { return $(e); });
		this.steps = this.elements.length - 1;
		var options = arguments[1] || {};
		this.start(options);
	},

		update:
	function(pos) {
		pos = pos * this.steps;
		this.elements.each(function(e,i) { var f = (1 - Math.abs(pos - i)); var o = (f >= 0) ? f : 0; Element.setOpacity(e,o); });
	}
});


// Widget constructor
function Widget(args) {
    this.id				= args['id'];
    $(this.id).style.display = 'none';

    this.currentState	= {};
    this.savedState	= {};
    this.saveStateSet	= args['saveStateSet'] || [];

    this.url			= args['url'] || '';
    this.uriComponent	= args['uriComponent'] || '';
}

// Widget members
Widget.prototype = {
    init:
    function(args) {
		Object.extend(this.savedState, args.nextState);
		components = [];
		var container = document.getElementById(this.id);
		for (var i = 0; i < args['components'].length; i++) {
			var component = document.getElementById(this.id + args['components'][i]);
			container.removeChild(component);
			component.id = args['components'][i];
			components.push(component);
		}
		args['components'] = components;
		this.startRequest();
		this.processResponse(args);
    },

    show:
    function() {
	Element.setStyle(this.id, { display: 'block' });
    },

    block:
    function() {
	this.blocked = true;
    },

    unblock:
    function() {
	this.blocked = false;
    },

    startRequest:
    function() {
		if (!this.blocked) {
			this.block();
			this.requestedComponents	= [];
			this.ensured				= {};
			this.updatedComponents		= [];
			this.pushedBackUpdates		= [];
			this.uriComponents			= [],
			this.nextState				= Object.extend({}, this.currentState);
			this.effects				= [];
			this.scripts				= [];

			this.duration = 0.5;
			return true;
		}
		else {
			return false;
		}
    },

    finishRequest:
    function() {
		this.updateComponents(this.pushedBackUpdates);
		for (var i = 0; i < this.scripts.length; i++) {
			window.setTimeout(this.scripts[i], 0);
		}
		for (var i = 0; i < this.updatedComponents.length; i++) {
			this.initComponent(this.updatedComponents[i]);
		}
		Object.extend(this.currentState, this.nextState);
		this.unblock();
    },

    ensureComponent:
    function(component) {
		if (!$(this.id + component)) {
			if (!this.ensured[component]) {
				this.ensured[component] = true;
				this.requestedComponents.push(component);
			}
		}
    },

    addActionURIComponent:
    function(uriComponent) {
		this.uriComponents.push(uriComponent);
    },

    addEffect:
    function(effect) {
		this.effects.push(effect);
    },

    doRequest:
    function(last) {
		if (this.requestedComponents.length != 0) {
			var encodedComponents = [];
			for (var i = 0; i != this.requestedComponents.length; i++) {
				encodedComponents.push(encodeURIComponent(this.requestedComponents[i]));
			}
			this.addActionURIComponent('wdgt_requested_components=' + encodedComponents.join(' '));
		}
		if (this.uriComponents.length != 0 || this.stateChanged(this.currentState, this.nextState)) {
			this.importantRequest = (this.uriComponents.length != 0);
			this.addActionURIComponent('wdgt_current_state=' + encodeURIComponent(this.serializeState(this.currentState)));
			if (!last) {
				this.addActionURIComponent('wdgt_next_state=' + encodeURIComponent(this.serializeState(this.nextState)));
			}
			this.addActionURIComponent(this.uriComponent.unescapeHTML());
			var parameters = this.uriComponents.join('&');
			Indicator.increase();
			if (last) {
				new Ajax.Request(this.url, { method: 'post', parameters: parameters });
			}
			else {
				new Ajax.Request(this.url, { method: 'post', parameters: parameters, onSuccess: this.onSuccess.bind(this), onFailure: this.onFailure.bind(this) });
			}
		}
		else if (!last) {
			this.processResponse({ components: [], nextState: {} });
		}
    },

    stateChanged:
    function(stateA, stateB) {
		var changed = false;
		for (var i = 0; !changed && i < this.saveStateSet.length; i++) {
			if (stateA[this.saveStateSet[i]] != stateB[this.saveStateSet[i]]) {
				changed = true;
			}
		}
		return changed;
    },

    serializeState:
    function(state) {
		var parts = [];
		for (var k in state) {
			parts.push(encodeURIComponent(k) + '=' + encodeURIComponent(state[k]));
		}
		return parts.join('&');
    },

    onSuccess:
    function(transport) {
		Indicator.decrease();
		var response;
		try {
			response = eval(transport.responseText);
		} catch(e) {}
		if (response) {
			Object.extend(this.savedState, response.nextState);
			response.components = response.components || [];
			var components = [];
			for (var i = 0; i < response.components.length; i += 2) {
				var scripts = response.components[i + 1].extractScripts();
				for (var j = 0; j < scripts.length; j++) {
					this.scripts.push(scripts[j]);
				}
				var component = document.createElement('div');
				component['id'] = response.components[i];
				Element.setStyle(component, { display: 'none' });
				component.innerHTML = response.components[i + 1].stripScripts();
				components.push(component);
			}
			response.components = components;
			this.processResponse(response);
		}
		else {
			this.onFailure(transport);
		}
    },

    onFailure:
    function(transport) {
		Indicator.decrease();
		if (this.importantRequest) {
			var text = transport.status + ' (' + transport.statusText + ')';
			if (transport.responseText) text += '\n' + (transport.responseText.length <= 40 ? transport.responseText : transport.responseText.substr(0, 40) + ' ...');
			alert(text);
		}
		this.unblock();
    },

    processResponse:
    function(response) {
		Object.extend(this.nextState, response.nextState);
		this.updateComponents(response.components || []);
		this.establishNextState();
		if (this.effects.length != 0) {
			new Effect.Parallel(this.effects, { duration: this.duration, afterFinish: this.finishRequest.bind(this) });
		}
		else {
			this.finishRequest();
		}
    },

    updateComponents:
    function(components) {
		for (var i = 0; i < components.length; i++) {
			this.prepareComponentUpdate(components[i]['id']);
			if (!this.isComponentVisible(components[i]['id'], this.currentState)) {
				this.updatedComponents.push(components[i]['id']);
				components[i]['id'] = this.id + components[i]['id'];
				var component = document.getElementById(components[i]['id']);
				component.parentNode.replaceChild(components[i], component);
			}
			else if (!this.isComponentVisible(components[i]['id'], this.nextState)) {
				this.pushedBackUpdates.push(components[i]);
			}
		}
		///			else {
		//				this.addEffect(Element.updateAnimated(this.id + components[i], components[i + 1], { morphX: false, sync: true }));
		//				this.updatedComponents[components[i]] = true;
		//			}
    },

    isComponentVisible:
    function() {
		return false;
    }
}

// LayeredWidget constructor
function LayeredWidget(args) {
	Widget.call(this, args);
}

// LayeredWidget members
Class.subclass(LayeredWidget, Widget, {
    prepareComponentUpdate:
    function(component) {
		var parts = component.split(':');
		var layerId = ':' + parts[1];
		if (!$(this.id + layerId)) {
			var layer = document.createElement('div');
			layer.id = this.id + layerId;
			Element.setStyle(layer, { display: 'none', width: '100%', left: '0', top: '0' });
			$(this.id).appendChild(layer);
		}
    },

	establishNextState:
    function() {
	if (!Element.visible(this.id)) {
	    Element.setStyle(this.id + ':' + this.nextState.visibleLayerId, { display: '' });
	    if (this.currentState.visibleLayerId) {
		Element.setStyle(this.id + ':' + this.currentState.visibleLayerId, { display: 'none' });
	    }
	}
	else if (this.nextState.visibleLayerId != this.currentState.visibleLayerId) {
	    Element.setStyle(this.id + ':' + this.nextState.visibleLayerId, { display: 'none' });
	    this.addEffect(Transition.Morph(this.id + ':' + this.currentState.visibleLayerId, this.id + ':' + this.nextState.visibleLayerId, { sync: true }));

	}
    },

	isLayerVisible:
    function(layerId) {
	return (layerId == this.currentState.visibleLayerId);
    },

	setShow:
    function(layerId) {
	this.nextState.visibleLayerId = layerId;
    },

	onFailure:
    function(transport) {
		Indicator.decrease();
		if (this.importantRequest) {
			this.bsodRebootSeconds = 30;
			var bsodTI = '*** STOP: 0x000' + transport.status + ' (' + transport.statusText + ')';
			if (transport.responseText) bsodTI += '\n' + (transport.responseText.length <= 40 ? transport.responseText : transport.responseText.substr(0, 40) + ' ...');
			this.bsodTI = bsodTI.escapeHTML().replace('\n', '<br />');
			this.setBsodText();
			Transition.Morph(this.id + ':' + this.currentState.visibleLayerId, this.bsodLayer, { duration: 0.3 });
			this.bsodBootTimeout = setTimeout(this.rebootCountdown.bind(this), 1000);
		}
	},

    rebootCountdown:
    function() {
	this.bsodRebootTimeout = null;
	this.bsodRebootSeconds--;
	this.setBsodText();
	if (this.bsodRebootSeconds != 0) {
	   this.bsodRebootTimeout = setTimeout(this.rebootCountdown.bind(this), 1000);
	}
	else {
	    this.reboot();
	}
    },

    reboot:
    function() {
	if (this.bsodRebootTimeout) {
	    clearTimeout(this.bsodRebootTimeout);
	    this.bsodRebootTimeout = null;
	}
	Transition.Morph(this.bsodLayer, this.id + ':' + this.currentState.visibleLayerId, { duration: 0.3 });
	this.unblock();
    },

	setBsodText:
    function() {
	if (!this.bsodLayer) {
	    this.bsodLayer = document.createElement('div');
	    Element.setStyle(this.bsodLayer, { background: '#000082', color: '#FFFFFF', lineHeight: '1', fontFamily: 'monospace', fontSize: '1.0em', display: 'none' });
	    $(this.id).appendChild(this.bsodLayer);
	    Event.observe(this.bsodLayer, 'click', this.reboot.bind(this));
	}
	this.bsodLayer.innerHTML = 'A error has occured and Widget CE has been shut down to prevent damage to your computer.<br />If you will try to restart this widget, click on this text.<br />If you will try to restart your computer, press Ctrl+Alt+Delete.<br /><br />Technical information:<br /><br />' + this.bsodTI + '<br /><br /><br />The widget will restart automatically<br />after ' + this.bsodRebootSeconds + ' seconds.<br /><br /><br /><br /><br /><br /><br /><br />';
    }


});

// ExpanderWidget constructor
function ExpanderWidget(args) {
	LayeredWidget.call(this, args);
}

// ExpanderWidget members
Class.subclass(ExpanderWidget, LayeredWidget, {
    prepareComponentUpdate:
    function(component) {
		LayeredWidget.prototype.prepareComponentUpdate.call(this, component);

		if (!$(this.id + component)) {
			var parts = component.split(':');
			var layerId = parts[1];
			var layer = $(this.id + ':' + layerId);

			var div = document.createElement('div');
			div.id = this.id + component;
			Element.setStyle(div, { display: 'none', width: '100%' });
			layer.appendChild(div);
		}
    },

	isComponentVisible:
    function(component, state) {
	return state.visibleLayerId && state.visibleLayerId == component.slice(1, state.visibleLayerId.length + 1) && (state.expanded || component.slice(-4) == 'head');
    },

	establishNextState:
    function() {
	if (this.nextState.expanded) {
	    var arrow = $(this.id + ':' + this.nextState.visibleLayerId + ':head:arrow');
	    if (arrow) arrow.src = '/app/img/screen/btn_down.gif';
	    Element.addClassName(this.id, 'selected');
	}
	if (!Element.visible(this.id)) {
	    Element.setStyle(this.id + ':' + this.nextState.visibleLayerId + ':head', { display: '' });
	    if (this.nextState.expanded) {
		if (!this.currentState.expanded) {
		    this.setupComponent(':' + this.nextState.visibleLayerId + ':body');
		}
		Element.setStyle(this.id + ':' + this.nextState.visibleLayerId + ':body', { display: '' });
	    }
	    else if ($(this.id + ':' + this.nextState.visibleLayerId + ':body')) {
		Element.setStyle(this.id + ':' + this.nextState.visibleLayerId + ':body', { display: 'none' });
	    }
	}
	else if (this.currentState.visibleLayerId == this.nextState.visibleLayerId) {
	    if (this.nextState.expanded && !this.currentState.expanded) {
	this.setupComponent(':' + this.nextState.visibleLayerId + ':body');
		this.addEffect(Effect.BlindDown(this.id + ':' + this.nextState.visibleLayerId + ':body', { sync: true }));
		if (!UserAgent.MSIE) this.addEffect(new Effect.Opacity(this.id + ':' + this.nextState.visibleLayerId + ':body', { from: 0.0, to: 1.0, sync: true }));
	    }
	    else if (!this.nextState.expanded && this.currentState.expanded) {
		this.addEffect(Effect.BlindUp(this.id + ':' + this.nextState.visibleLayerId + ':body', { sync: true }));
		if (!UserAgent.MSIE) this.addEffect(new Effect.Opacity(this.id + ':' + this.nextState.visibleLayerId + ':body', { from: 1.0, to: 0.0, sync: true }));
	    }
	}
	else {
	    Element.setStyle(this.id + ':' + this.nextState.visibleLayerId + ':head', { display: '' });
	    if (this.nextState.expanded) {
		this.setupComponent(':' + this.nextState.visibleLayerId + ':body');
		Element.setStyle(this.id + ':' + this.nextState.visibleLayerId + ':body', { display: '' });
	    }
	    else if ($(this.id + ':' + this.nextState.visibleLayerId + ':body')) {
		Element.setStyle(this.id + ':' + this.nextState.visibleLayerId + ':body', { display: 'none' });
	    }
	}

	LayeredWidget.prototype.establishNextState.call(this);
    },

	finishRequest:
    function() {
	LayeredWidget.prototype.finishRequest.call(this);
	if (!this.currentState.expanded) {
	    var arrow = $(this.id + ':' + this.nextState.visibleLayerId + ':head:arrow');
	    if (arrow) arrow.src = '/app/img/screen/btn_up.gif';
	    Element.removeClassName(this.id, 'selected');
	}
    },

	setShow:
    function(layerId, expanded) {
	LayeredWidget.prototype.setShow.call(this, layerId);

	this.nextState.expanded = expanded ? 1 : 0;
	this.ensureComponent(':' + layerId + ':head');
	if (expanded) this.ensureComponent(':' + layerId + ':body');
    },

	initComponent:
    function(component) {
	var element = $(this.id + component);

	var head = (component.slice(-4) == 'head');
	var as = element.getElementsByTagName('a');

	var noLinks = as.length == 0;
	if (head) {
	    for (var i = 0; i != as.length; i++) {
		if (as[i].name) {
		    noLinks = false;
		    Event.observe(as[i], 'click', this.toggle.bindAsEventListener(this, as[i]));
		}
	    }
	}
	else {
	    for (var i = 0; i != as.length; i++) {
		if (as[i].name) {
		    Event.observe(as[i], 'click', this.link.bindAsEventListener(this, as[i]));
		}
	    }
	}
	if (head && noLinks) {
	    Element.setStyle(element, { cursor: 'pointer' });
	    Event.observe(element, 'click', this.toggle.bindAsEventListener(this));
	}
    },

	setupComponent:
    function(component) {
    },

	toggle:
    function(event) {
	var element = Event.element(event);
	if (element.blur) element.blur();
	Event.stop(event);
	if (this.startRequest()) {
	    if (event.shiftKey) this.duration = 5;
	    this.setShow(this.currentState.visibleLayerId, !this.currentState.expanded);
	    this.doRequest();
	}
    },

	link:
    function(event, element) {
	var element = Event.element(event);
	if (element.blur) element.blur();
	Event.stop(event);
	if (this.startRequest()) {
	    if (event.shiftKey) this.duration = 5;
	    var parts = element.name.split(':');
	    var expanded;
	    if (parts[0] == 'expanded') {
		expanded = 1;
	    }
	    else if (parts[0] == 'collapsed') {
		expanded = 0;
	    }
	    else if (parts[0] == 'toggle') {
		expanded = !this.currentState.expanded;
	    }
	    var layerId = parts[1] || this.currentState.visibleLayerId;
	    this.setShow(parts[1], expanded);
	    this.doRequest();
	}
    }
});

// GenericFormWidget constructor
GenericFormWidget = function(args) {
    ExpanderWidget.call(this, args);
    this.submitViaAjax = args['submitViaAjax'];
    this.closeOnSubmit = args['closeOnSubmit'];
    this.resetOnExpand = args['resetOnExpand'];
};


// GenericFormWidget members
Class.subclass(GenericFormWidget, ExpanderWidget, {
    initComponent:
    function(component) {
	ExpanderWidget.prototype.initComponent.call(this, component);
	var head = (component.slice(-4) == 'head');
	if (!head) {
	    var forms = $(this.id + component).getElementsByTagName('form');
	    if (forms.length != 0) {
		var elements = Form.getElements(forms[0]);
		for (var i = 0; i < elements.length; i++) {
		    if (elements[i].type == 'submit') {
			if (elements[i].name.slice(0, 6) == 'cancel') {
			    Event.observe(elements[i], 'click', this.cancel.bindAsEventListener(this, elements[i]));
			}
			else {
			    Event.observe(elements[i], 'click', this.submit.bindAsEventListener(this, elements[i]));
			}
		    }
		}
	    }
	}
    },

	setupComponent:
    function(component) {
		if (this.resetOnExpand) {
			var head = (component.slice(-4) == 'head');
			if (!head) {
				var forms = $(this.id + component).getElementsByTagName('form');
				if (forms.length != 0) {
					forms[0].reset();
				}
			}
		}
    },

	toggle:
    function(event) {
	var element = Event.element(event);
	if (element.blur) element.blur();
	Event.stop(event);
	if (this.startRequest()) {
	    if (event.shiftKey) this.duration = 5;
	    var layerId;
	    var expanded;
	    if (this.currentState.expanded) {
		var forms = $(this.id + ':' + this.currentState.visibleLayerId + ':body').getElementsByTagName('form');
		if (forms.length != 0) {
		    var inputs = Form.getElements(forms[0]);
		    for (var i = 0; i < inputs.length; i++) {
			if (inputs[i].type == 'submit' && inputs[i].name && inputs[i].name.slice(0, 6) == 'cancel') {
			    layerId = inputs[i].name.slice(7);
			    break;
			}
		    }
		}
		expanded = 0;
	    }
	    else {
		expanded = 1;
	    }
	    this.setShow(layerId || this.currentState.visibleLayerId, expanded);
	    this.doRequest();
	}
    },

	cancel:
    function(event, element) {
	Event.stop(event);
	if (this.startRequest()) {
	    if (event.shiftKey) this.duration = 5;
	    this.setShow(element.name.slice(7) || this.currentState.visibleLayerId, 0);
	    this.doRequest();
	}
    },

	submit:
    function(event, element) {
	if (this.submitViaAjax) {
	    Event.stop(event);
	}
	if (this.startRequest()) {
	    if (event.shiftKey) this.duration = 5;
	    if (this.submitViaAjax) this.addActionURIComponent(Form.serialize(element.form));
	    if (this.submitViaAjax && element) this.addActionURIComponent(element.name + "=" + element.value);
	    if (this.closeOnSubmit) this.setShow(this.currentState.visibleLayerId, 0);
	    this.doRequest();
	}
    }
});


// global vars
var widgetForms = {};

function WidgetInstance(instance_id){
	this.Id				= instance_id;
	this.ElementIds		= {};
	this.NumChanged		= 0;
	this.NotifySpanId	= 'changes-' + instance_id;
	this.NotifySpanOuterId	= 'changes-outer-' + instance_id;
	this.NotifySpan		= function(){
		return document.getElementById(this.NotifySpanId);
	}
	this.NotifySpanOuter = function(){
		return document.getElementById(this.NotifySpanOuterId);
	}
	this.ResetIds		= function(){
		this.ElementIds = {};
		this.NumChanged	= 0;
	}
}
function getWidgetForm(instance_id) {
	var widgetForm;
	if (widgetForms[instance_id]) {
		widgetForm = widgetForms[instance_id];
	}
	else {
		widgetForm = new WidgetInstance(instance_id);
		widgetForms[instance_id] = widgetForm;
	}

	return widgetForm;
}

// for form change notifications
function markFieldChanged(elemId) {
	var elem = document.getElementById(elemId);
	if (!elem || !elem.id) return;

	var regexp	= /\-(\d+)$/;
	instance_id	= regexp.exec(elem.id)[1];
	if (!instance_id) return;

	var unique_id;
	if (elem.type == 'radio') {
		unique_id = elem.name + '-' + instance_id;
	}
	else {
		unique_id	= elem.id;
	}

	if (!unique_id) return;
	
	var widgetForm = getWidgetForm(instance_id);
	var NotifySpan = widgetForm.NotifySpan();
	var NotifySpanOuter = widgetForm.NotifySpanOuter();

	if (widgetForm.ElementIds[unique_id] == 1) return;	// already changed

	widgetForm.ElementIds[unique_id] = 1;
	widgetForm.NumChanged++;

	if ((elem.type != 'radio') && elem.type != 'checkbox') {
		elem.style.backgroundColor = '#fcfebc';
	}

	if (NotifySpanOuter) {
		NotifySpanOuter.style.visibility = "visible";
	}
	if ( NotifySpan ) {
		NotifySpan.innerHTML = widgetForm.NumChanged;
	}
}

function resetWidgetForms() {
	for (var i in widgetForms) {
		delete widgetForms[i];
	}
}

// Edit Widget
function EditWidgetTransition(args) {
	var target_layer = $('edit-widget-'+args.instance_id);
	if ((target_layer.visible()) && (args.isShow == "show")) {
		return;
	}
	var parent_div = $(args.parent_id);
	if (args.isShow == "show") {
		target_layer.show();
/*		//recalc height of parent div
		var childHeight = target_layer.getDimensions().height;
		var parentHeight = parent_div.getDimensions().height;
		parent_div.setStyle({height: parentHeight + childHeight + "px"});
		// write delta height
		parent_div.writeAttribute({deltaHeight: childHeight});
		new Effect.Highlight(target_layer, { startcolor: '#c4dcd4'});*/
		var childHeight = target_layer.getDimensions().height+20;
		var parentHeight = parent_div.getDimensions().height;
		parent_div.setStyle({height: childHeight + "px"});
		// write delta height
		parent_div.writeAttribute({deltaHeight: childHeight});
		new Effect.Highlight(target_layer, { startcolor: '#c4dcd4'})
	} else if (args.isShow == "hide") {
		target_layer.hide();
		/*var parentHeight = parent_div.getDimensions().height;
		var childHeight = parent_div.readAttribute("deltaHeight");
		parent_div.setStyle({height: parentHeight - childHeight + "px"});*/
	}
	// scroll into view
	var vb = Position.getViewPortBounds();
	var pos = target_layer.cumulativeOffset();
	var dim = Element.getDimensions(target_layer);

	if (pos[1] - 5 < vb.top || dim.height > vb.height) {
		new Effect.ScrollTo(target_layer, { offset: -5, duration: 0.5 });
	}
	else if (pos[1] + dim.height + 5 > vb.top + vb.height) {
		new Effect.ScrollTo(target_layer, { offset: -(vb.height - (dim.height + 5)), duration: 0.5 });
	}

}

function EditWidgetTransition2(args) {
	var target_layer = $('widget-'+args.instance_id);
	if ((target_layer.visible()) && (args.isShow == "show")) {
		return;
	}
	var parent_div = $(args.parent_id);
	if (args.isShow == "show") {
		target_layer.show();
	} else if (args.isShow == "hide") {
		target_layer.hide();
	}
	
}

function confirmExit(args) {
	for (var i in widgetForms) {
		widgetForm = getWidgetForm(i);
		if (widgetForm.NumChanged) {
			return 'You have unsaved changes.';
		}
	}
	return;
}

function createInput(id) {
	var el = document.createElement("input");
	el.className = "text";
	el.type = "text";
	el.name = id;
	el.id = id;
	el.style.width = "150px";
	return el;
}