/*  Prototype JavaScript framework, version 1.5.1
 *  (c) 2005-2007 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: '1.5.1',

  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
  },

  BrowserFeatures: {
    XPath: !!document.evaluate,
    ElementExtensions: !!window.HTMLElement,
    SpecificElementExtensions:
      (document.createElement('div').__proto__ !==
       document.createElement('form').__proto__)
  },

  ScriptFragment: '<script[^>]*>([\u0001-\uFFFF]*?)</script>',
  JSONFilter: /^\/\*-secure-\s*(.*)\s*\*\/\s*$/,

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

var Class = {
  create: function() {
    return function() {
      this.initialize.apply(this, arguments);
    }
  }
}

var Abstract = new Object();

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 === undefined) return 'undefined';
      if (object === null) return 'null';
      return object.inspect ? object.inspect() : object.toString();
    } 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.ownerDocument === document) return;
    var results = [];
    for (var property in object) {
      var value = Object.toJSON(object[property]);
      if (value !== undefined)
        results.push(property.toJSON() + ': ' + value);
    }
    return '{' + results.join(', ') + '}';
  },

  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);
  }
});

Function.prototype.bind = function() {
  var __method = this, args = $A(arguments), object = args.shift();
  return function() {
    return __method.apply(object, args.concat($A(arguments)));
  }
}

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

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';
  }
});

Date.prototype.toJSON = function() {
  return '"' + this.getFullYear() + '-' +
    (this.getMonth() + 1).toPaddedString(2) + '-' +
    this.getDate().toPaddedString(2) + 'T' +
    this.getHours().toPaddedString(2) + ':' +
    this.getMinutes().toPaddedString(2) + ':' +
    this.getSeconds().toPaddedString(2) + '"';
};

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;
  }
}

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

var PeriodicalExecuter = Class.create();
PeriodicalExecuter.prototype = {
  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);
  },

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

  onTimerEvent: function() {
    if (!this.currentlyExecuting) {
      try {
        this.currentlyExecuting = true;
        this.callback(this);
      } 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 = count === undefined ? 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 this;
  },

  truncate: function(length, truncation) {
    length = length || 30;
    truncation = truncation === undefined ? '...' : truncation;
    return this.length > length ?
      this.slice(0, length - truncation.length) + truncation : 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 = document.createElement('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 (hash[key].constructor != Array) 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) {
    var result = '';
    for (var i = 0; i < count; i++) result += this;
    return result;
  },

  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}');
  },

  evalJSON: function(sanitize) {
    var json = this.unfilterJSON();
    try {
      if (!sanitize || (/^("(\\.|[^"\\\n\r])*?"|[,:{}\[\]0-9.\-+Eaeflnr-u \n\r\t])+?$/.test(json)))
        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);
  }
});

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 (typeof replacement == 'function') 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();
Template.Pattern = /(^|.|\r|\n)(#\{(.*?)\})/;
Template.prototype = {
  initialize: function(template, pattern) {
    this.template = template.toString();
    this.pattern  = pattern || Template.Pattern;
  },

  evaluate: function(object) {
    return this.template.gsub(this.pattern, function(match) {
      var before = match[1];
      if (before == '\\') return match[2];
      return before + String.interpret(object[match[3]]);
    });
  }
}

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

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

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

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

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

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

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

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

  grep: function(pattern, iterator) {
    var results = [];
    this.each(function(value, index) {
      var stringValue = value.toString();
      if (stringValue.match(pattern))
        results.push((iterator || Prototype.K)(value, index));
    })
    return results;
  },

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

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

  inject: function(memo, iterator) {
    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) {
    var result;
    this.each(function(value, index) {
      value = (iterator || Prototype.K)(value, index);
      if (result == undefined || value >= result)
        result = value;
    });
    return result;
  },

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

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

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

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

  sortBy: function(iterator) {
    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 (typeof args.last() == 'function')
      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,
  member:  Enumerable.include,
  entries: Enumerable.toArray
});
var $A = Array.from = function(iterable) {
  if (!iterable) return [];
  if (iterable.toArray) {
    return iterable.toArray();
  } else {
    var results = [];
    for (var i = 0, length = iterable.length; i < length; i++)
      results.push(iterable[i]);
    return results;
  }
}

if (Prototype.Browser.WebKit) {
  $A = Array.from = function(iterable) {
    if (!iterable) return [];
    if (!(typeof iterable == 'function' && iterable == '[object NodeList]') &&
      iterable.toArray) {
      return iterable.toArray();
    } else {
      var results = [];
      for (var i = 0, length = iterable.length; i < length; i++)
        results.push(iterable[i]);
      return results;
    }
  }
}

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(value && value.constructor == Array ?
        value.flatten() : [value]);
    });
  },

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

  indexOf: function(object) {
    for (var i = 0, length = this.length; i < length; i++)
      if (this[i] == object) return i;
    return -1;
  },

  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;
    });
  },

  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 (value !== undefined) results.push(value);
    });
    return '[' + results.join(', ') + ']';
  }
});

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

function $w(string) {
  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 (arguments[i].constructor == Array) {
        for (var j = 0, arrayLength = arguments[i].length; j < arrayLength; j++)
          array.push(arguments[i][j]);
      } else {
        array.push(arguments[i]);
      }
    }
    return array;
  }
}
var Hash = function(object) {
  if (object instanceof Hash) this.merge(object);
  else Object.extend(this, object || {});
};

Object.extend(Hash, {
  toQueryString: function(obj) {
    var parts = [];
    parts.add = arguments.callee.addPair;

    this.prototype._each.call(obj, function(pair) {
      if (!pair.key) return;
      var value = pair.value;

      if (value && typeof value == 'object') {
        if (value.constructor == Array) value.each(function(value) {
          parts.add(pair.key, value);
        });
        return;
      }
      parts.add(pair.key, value);
    });

    return parts.join('&');
  },

  toJSON: function(object) {
    var results = [];
    this.prototype._each.call(object, function(pair) {
      var value = Object.toJSON(pair.value);
      if (value !== undefined) results.push(pair.key.toJSON() + ': ' + value);
    });
    return '{' + results.join(', ') + '}';
  }
});

Hash.toQueryString.addPair = function(key, value, prefix) {
  key = encodeURIComponent(key);
  if (value === undefined) this.push(key);
  else this.push(key + '=' + (value == null ? '' : encodeURIComponent(value)));
}

Object.extend(Hash.prototype, Enumerable);
Object.extend(Hash.prototype, {
  _each: function(iterator) {
    for (var key in this) {
      var value = this[key];
      if (value && value == Hash.prototype[key]) continue;

      var pair = [key, value];
      pair.key = key;
      pair.value = value;
      iterator(pair);
    }
  },

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

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

  merge: function(hash) {
    return $H(hash).inject(this, function(mergedHash, pair) {
      mergedHash[pair.key] = pair.value;
      return mergedHash;
    });
  },

  remove: function() {
    var result;
    for(var i = 0, length = arguments.length; i < length; i++) {
      var value = this[arguments[i]];
      if (value !== undefined){
        if (result === undefined) result = value;
        else {
          if (result.constructor != Array) result = [result];
          result.push(value)
        }
      }
      delete this[arguments[i]];
    }
    return result;
  },

  toQueryString: function() {
    return Hash.toQueryString(this);
  },

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

  toJSON: function() {
    return Hash.toJSON(this);
  }
});

function $H(object) {
  if (object instanceof Hash) return object;
  return new Hash(object);
};

// Safari iterates over shadowed properties
if (function() {
  var i = 0, Test = function(value) { this.key = value };
  Test.prototype.key = 'foo';
  for (var property in new Test('bar')) i++;
  return i > 1;
}()) Hash.prototype._each = function(iterator) {
  var cache = [];
  for (var key in this) {
    var value = this[key];
    if ((value && value == Hash.prototype[key]) || cache.include(key)) continue;
    cache.push(key);
    var pair = [key, value];
    pair.key = key;
    pair.value = value;
    iterator(pair);
  }
};
ObjectRange = Class.create();
Object.extend(ObjectRange.prototype, Enumerable);
Object.extend(ObjectRange.prototype, {
  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 (typeof responder[callback] == 'function') {
        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 = function() {};
Ajax.Base.prototype = {
  setOptions: function(options) {
    this.options = {
      method:       'post',
      asynchronous: true,
      contentType:  'application/x-www-form-urlencoded',
      encoding:     'UTF-8',
      parameters:   ''
    }
    Object.extend(this.options, options || {});

    this.options.method = this.options.method.toLowerCase();
    if (typeof this.options.parameters == 'string')
      this.options.parameters = this.options.parameters.toQueryParams();
  }
}

Ajax.Request = Class.create();
Ajax.Request.Events =
  ['Uninitialized', 'Loading', 'Loaded', 'Interactive', 'Complete'];

Ajax.Request.prototype = Object.extend(new Ajax.Base(), {
  _complete: false,

  initialize: function(url, options) {
    this.transport = Ajax.getTransport();
    this.setOptions(options);
    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 = Hash.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 {
      if (this.options.onCreate) this.options.onCreate(this.transport);
      Ajax.Responders.dispatch('onCreate', this, this.transport);

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

      if (this.options.asynchronous)
        setTimeout(function() { this.respondToReadyState(1) }.bind(this), 10);

      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 (typeof extras.push == 'function')
        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() {
    return !this.transport.status
        || (this.transport.status >= 200 && this.transport.status < 300);
  },

  respondToReadyState: function(readyState) {
    var state = Ajax.Request.Events[readyState];
    var transport = this.transport, json = this.evalJSON();

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

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

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

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

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

  evalJSON: function() {
    try {
      var json = this.getHeader('X-JSON');
      return json ? json.evalJSON() : 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.Updater = Class.create();

Object.extend(Object.extend(Ajax.Updater.prototype, Ajax.Request.prototype), {
  initialize: function(container, url, options) {
    this.container = {
      success: (container.success || container),
      failure: (container.failure || (container.success ? null : container))
    }

    this.transport = Ajax.getTransport();
    this.setOptions(options);

    var onComplete = this.options.onComplete || Prototype.emptyFunction;
    this.options.onComplete = (function(transport, param) {
      this.updateContent();
      onComplete(transport, param);
    }).bind(this);

    this.request(url);
  },

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

    if (!this.options.evalScripts) response = response.stripScripts();

    if (receiver = $(receiver)) {
      if (this.options.insertion)
        new this.options.insertion(receiver, response);
      else
        receiver.update(response);
    }

    if (this.success()) {
      if (this.onComplete)
        setTimeout(this.onComplete.bind(this), 10);
    }
  }
});

Ajax.PeriodicalUpdater = Class.create();
Ajax.PeriodicalUpdater.prototype = Object.extend(new Ajax.Base(), {
  initialize: function(container, url, options) {
    this.setOptions(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(request) {
    if (this.options.decay) {
      this.decay = (request.responseText == this.lastText ?
        this.decay * this.options.decay : 1);

      this.lastText = request.responseText;
    }
    this.timer = setTimeout(this.onTimerEvent.bind(this),
      this.decay * this.frequency * 1000);
  },

  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 (typeof element == 'string')
    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(query.snapshotItem(i));
    return results;
  };

  document.getElementsByClassName = function(className, parentElement) {
    var q = ".//*[contains(concat(' ', @class, ' '), ' " + className + " ')]";
    return document._getElementsByXPath(q, parentElement);
  }

} else document.getElementsByClassName = function(className, parentElement) {
  var children = ($(parentElement) || document.body).getElementsByTagName('*');
  var elements = [], child;
  for (var i = 0, length = children.length; i < length; i++) {
    child = children[i];
    if (Element.hasClassName(child, className))
      elements.push(Element.extend(child));
  }
  return elements;
};

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

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

Element.extend = function(element) {
  var F = Prototype.BrowserFeatures;
  if (!element || !element.tagName || element.nodeType == 3 ||
   element._extended || F.SpecificElementExtensions || element == window)
    return element;

  var methods = {}, tagName = element.tagName, cache = Element.extend.cache,
   T = Element.Methods.ByTag;

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

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

  for (var property in methods) {
    var value = methods[property];
    if (typeof value == 'function' && !(property in element))
      element[property] = cache.findOrStore(value);
  }

  element._extended = Prototype.emptyFunction;
  return element;
};

Element.extend.cache = {
  findOrStore: function(value) {
    return this[value] = this[value] || function() {
      return value.apply(null, [this].concat($A(arguments)));
    }
  }
};

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, html) {
    html = typeof html == 'undefined' ? '' : html.toString();
    $(element).innerHTML = html.stripScripts();
    setTimeout(function() {html.evalScripts()}, 10);
    return element;
  },

  replace: function(element, html) {
    element = $(element);
    html = typeof html == 'undefined' ? '' : html.toString();
    if (element.outerHTML) {
      element.outerHTML = html.stripScripts();
    } else {
      var range = element.ownerDocument.createRange();
      range.selectNodeContents(element);
      element.parentNode.replaceChild(
        range.createContextualFragment(html.stripScripts()), element);
    }
    setTimeout(function() {html.evalScripts()}, 10);
    return element;
  },

  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 $A($(element).getElementsByTagName('*')).each(Element.extend);
  },

  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 (typeof selector == 'string')
      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 expression ? Selector.findElement(ancestors, expression, index) :
      ancestors[index || 0];
  },

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

  previous: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.previousElementSibling(element));
    var previousSiblings = element.previousSiblings();
    return expression ? Selector.findElement(previousSiblings, expression, index) :
      previousSiblings[index || 0];
  },

  next: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.nextElementSibling(element));
    var nextSiblings = element.nextSiblings();
    return expression ? Selector.findElement(nextSiblings, expression, index) :
      nextSiblings[index || 0];
  },

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

  getElementsByClassName: function(element, className) {
    return document.getElementsByClassName(className, element);
  },

  readAttribute: function(element, name) {
    element = $(element);
    if (Prototype.Browser.IE) {
      if (!element.attributes) return null;
      var t = Element._attributeTranslations;
      if (t.values[name]) return t.values[name](element, name);
      if (t.names[name])  name = t.names[name];
      var attribute = element.attributes[name];
      return attribute ? attribute.nodeValue : null;
    }
    return element.getAttribute(name);
  },

  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 = $(element))) return;
    var elementClassName = element.className;
    if (elementClassName.length == 0) return false;
    if (elementClassName == className ||
        elementClassName.match(new RegExp("(^|\\s)" + className + "(\\s|$)")))
      return true;
    return false;
  },

  addClassName: function(element, className) {
    if (!(element = $(element))) return;
    Element.classNames(element).add(className);
    return element;
  },

  removeClassName: function(element, className) {
    if (!(element = $(element))) return;
    Element.classNames(element).remove(className);
    return element;
  },

  toggleClassName: function(element, className) {
    if (!(element = $(element))) return;
    Element.classNames(element)[element.hasClassName(className) ? 'remove' : 'add'](className);
    return element;
  },

  observe: function() {
    Event.observe.apply(Event, arguments);
    return $A(arguments).first();
  },

  stopObserving: function() {
    Event.stopObserving.apply(Event, arguments);
    return $A(arguments).first();
  },

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

  scrollTo: function(element) {
    element = $(element);
    var pos = Position.cumulativeOffset(element);
    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, camelized) {
    element = $(element);
    var elementStyle = element.style;

    for (var property in styles)
      if (property == 'opacity') element.setOpacity(styles[property])
      else
        elementStyle[(property == 'float' || property == 'cssFloat') ?
          (elementStyle.styleFloat === undefined ? 'cssFloat' : 'styleFloat') :
          (camelized ? property : property.camelize())] = 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.style.overflow || 'auto';
    if ((Element.getStyle(element, 'overflow') || 'visible') != '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;
  }
};

Object.extend(Element.Methods, {
  childOf: Element.Methods.descendantOf,
  childElements: Element.Methods.immediateDescendants
});

if (Prototype.Browser.Opera) {
  Element.Methods._getStyle = Element.Methods.getStyle;
  Element.Methods.getStyle = function(element, style) {
    switch(style) {
      case 'left':
      case 'top':
      case 'right':
      case 'bottom':
        if (Element._getStyle(element, 'position') == 'static') return null;
      default: return Element._getStyle(element, style);
    }
  };
}
else if (Prototype.Browser.IE) {
  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) {
    element = $(element);
    var filter = element.getStyle('filter'), style = element.style;
    if (value == 1 || value === '') {
      style.filter = filter.replace(/alpha\([^\)]*\)/gi,'');
      return element;
    } else if (value < 0.00001) value = 0;
    style.filter = filter.replace(/alpha\([^\)]*\)/gi, '') +
      'alpha(opacity=' + (value * 100) + ')';
    return element;
  };

  // IE is missing .innerHTML support for TABLE-related elements
  Element.Methods.update = function(element, html) {
    element = $(element);
    html = typeof html == 'undefined' ? '' : html.toString();
    var tagName = element.tagName.toUpperCase();
    if (['THEAD','TBODY','TR','TD'].include(tagName)) {
      var div = document.createElement('div');
      switch (tagName) {
        case 'THEAD':
        case 'TBODY':
          div.innerHTML = '<table><tbody>' +  html.stripScripts() + '</tbody></table>';
          depth = 2;
          break;
        case 'TR':
          div.innerHTML = '<table><tbody><tr>' +  html.stripScripts() + '</tr></tbody></table>';
          depth = 3;
          break;
        case 'TD':
          div.innerHTML = '<table><tbody><tr><td>' +  html.stripScripts() + '</td></tr></tbody></table>';
          depth = 4;
      }
      $A(element.childNodes).each(function(node) { element.removeChild(node) });
      depth.times(function() { div = div.firstChild });
      $A(div.childNodes).each(function(node) { element.appendChild(node) });
    } else {
      element.innerHTML = html.stripScripts();
    }
    setTimeout(function() { html.evalScripts() }, 10);
    return element;
  }
}
else if (Prototype.Browser.Gecko) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1) ? 0.999999 :
      (value === '') ? '' : (value < 0.00001) ? 0 : value;
    return element;
  };
}

Element._attributeTranslations = {
  names: {
    colspan:   "colSpan",
    rowspan:   "rowSpan",
    valign:    "vAlign",
    datetime:  "dateTime",
    accesskey: "accessKey",
    tabindex:  "tabIndex",
    enctype:   "encType",
    maxlength: "maxLength",
    readonly:  "readOnly",
    longdesc:  "longDesc"
  },
  values: {
    _getAttr: function(element, attribute) {
      return element.getAttribute(attribute, 2);
    },
    _flag: function(element, attribute) {
      return $(element).hasAttribute(attribute) ? attribute : null;
    },
    style: function(element) {
      return element.style.cssText.toLowerCase();
    },
    title: function(element) {
      var node = element.getAttributeNode('title');
      return node.specified ? node.nodeValue : null;
    }
  }
};

(function() {
  Object.extend(this, {
    href: this._getAttr,
    src:  this._getAttr,
    type: this._getAttr,
    disabled: this._flag,
    checked:  this._flag,
    readonly: this._flag,
    multiple: this._flag
  });
}).call(Element._attributeTranslations.values);

Element.Methods.Simulated = {
  hasAttribute: function(element, attribute) {
    var t = Element._attributeTranslations, node;
    attribute = t.names[attribute] || attribute;
    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.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 (tagName.constructor == Array) 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;
    var cache = Element.extend.cache;
    for (var property in methods) {
      var value = methods[property];
      if (!onlyIfAbsent || !(property in destination))
        destination[property] = cache.findOrStore(value);
    }
  }

  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 (typeof klass == "undefined") continue;
      copy(T[tag], klass.prototype);
    }
  }

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

var Toggle = { display: Element.toggle };

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

Abstract.Insertion = function(adjacency) {
  this.adjacency = adjacency;
}

Abstract.Insertion.prototype = {
  initialize: function(element, content) {
    this.element = $(element);
    this.content = content.stripScripts();

    if (this.adjacency && this.element.insertAdjacentHTML) {
      try {
        this.element.insertAdjacentHTML(this.adjacency, this.content);
      } catch (e) {
        var tagName = this.element.tagName.toUpperCase();
        if (['TBODY', 'TR'].include(tagName)) {
          this.insertContent(this.contentFromAnonymousTable());
        } else {
          throw e;
        }
      }
    } else {
      this.range = this.element.ownerDocument.createRange();
      if (this.initializeRange) this.initializeRange();
      this.insertContent([this.range.createContextualFragment(this.content)]);
    }

    setTimeout(function() {content.evalScripts()}, 10);
  },

  contentFromAnonymousTable: function() {
    var div = document.createElement('div');
    div.innerHTML = '<table><tbody>' + this.content + '</tbody></table>';
    return $A(div.childNodes[0].childNodes[0].childNodes);
  }
}

var Insertion = new Object();

Insertion.Before = Class.create();
Insertion.Before.prototype = Object.extend(new Abstract.Insertion('beforeBegin'), {
  initializeRange: function() {
    this.range.setStartBefore(this.element);
  },

  insertContent: function(fragments) {
    fragments.each((function(fragment) {
      this.element.parentNode.insertBefore(fragment, this.element);
    }).bind(this));
  }
});

Insertion.Top = Class.create();
Insertion.Top.prototype = Object.extend(new Abstract.Insertion('afterBegin'), {
  initializeRange: function() {
    this.range.selectNodeContents(this.element);
    this.range.collapse(true);
  },

  insertContent: function(fragments) {
    fragments.reverse(false).each((function(fragment) {
      this.element.insertBefore(fragment, this.element.firstChild);
    }).bind(this));
  }
});

Insertion.Bottom = Class.create();
Insertion.Bottom.prototype = Object.extend(new Abstract.Insertion('beforeEnd'), {
  initializeRange: function() {
    this.range.selectNodeContents(this.element);
    this.range.collapse(this.element);
  },

  insertContent: function(fragments) {
    fragments.each((function(fragment) {
      this.element.appendChild(fragment);
    }).bind(this));
  }
});

Insertion.After = Class.create();
Insertion.After.prototype = Object.extend(new Abstract.Insertion('afterEnd'), {
  initializeRange: function() {
    this.range.setStartAfter(this.element);
  },

  insertContent: function(fragments) {
    fragments.each((function(fragment) {
      this.element.parentNode.insertBefore(fragment,
        this.element.nextSibling);
    }).bind(this));
  }
});

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

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);
/* Portions of the Selector class are derived from Jack SlocumÕs 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();

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

  compileMatcher: function() {
    // Selectors with namespaced attributes can't use the XPath version
    if (Prototype.BrowserFeatures.XPath && !(/\[[\w-]*?:/).test(this.expression))
      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(typeof c[i] == 'function' ? 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(typeof x[i] == 'function' ? 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) {
    return this.findElements(document).include(element);
  },

  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: "[@#{1}]",
    attr: function(m) {
      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 (typeof h === 'function') 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, m, v;

        var exclusion = [];
        while (e && le != e && (/\S/).test(e)) {
          le = e;
          for (var i in p) {
            if (m = e.match(p[i])) {
              v = typeof x[i] == 'function' ? 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 = false;',
    attr: function(m) {
      m[3] = (m[5] || m[6]);
      return new Template('n = h.attr(n, r, "#{1}", "#{3}", "#{2}"); 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|([^'"][^\]]*?)))?\]/
  },

  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) {
      for (var i = 0, node; node = nodes[i]; i++)
        node._counted = true;
      return nodes;
    },

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

    // mark each child node with its position (for nth calls)
    // "ofType" flag indicates whether we're indexing for nth-of-type
    // rather than nth-child
    index: function(parentNode, reverse, ofType) {
      parentNode._counted = true;
      if (reverse) {
        for (var nodes = parentNode.childNodes, i = nodes.length - 1, j = 1; i >= 0; i--) {
          node = nodes[i];
          if (node.nodeType == 1 && (!ofType || node._counted)) node.nodeIndex = j++;
        }
      } else {
        for (var i = 0, j = 1, nodes = parentNode.childNodes; node = nodes[i]; i++)
          if (node.nodeType == 1 && (!ofType || node._counted)) 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])._counted) {
          n._counted = true;
          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, children = [], 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) {
      tagName = 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() == tagName) results.push(node);
        return results;
      } else return root.getElementsByTagName(tagName);
    },

    id: function(nodes, root, id, combinator) {
      var targetNode = $(id), h = Selector.handlers;
      if (!nodes && root == document) return targetNode ? [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) {
      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) {
      if (!nodes) nodes = root.getElementsByTagName("*");
      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._counted) {
          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._counted) 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() + '-'); }
  },

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

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

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

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

  serializeElements: function(elements, getHash) {
    var data = elements.inject({}, function(result, element) {
      if (!element.disabled && element.name) {
        var key = element.name, value = $(element).getValue();
        if (value != null) {
         	if (key in result) {
            if (result[key].constructor != Array) result[key] = [result[key]];
            result[key].push(value);
          }
          else result[key] = value;
        }
      }
      return result;
    });

    return getHash ? data : Hash.toQueryString(data);
  }
};

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

  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) {
    return $(form).getElements().find(function(element) {
      return element.type != 'hidden' && !element.disabled &&
        ['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;
    options.parameters = form.serialize(true);

    if (params) {
      if (typeof params == 'string') params = params.toQueryParams();
      Object.extend(options.parameters, params);
    }

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

    return new Ajax.Request(form.readAttribute('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 Hash.toQueryString(pair);
      }
    }
    return '';
  },

  getValue: function(element) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    return Form.Element.Serializers[method](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) {
    switch (element.type.toLowerCase()) {
      case 'checkbox':
      case 'radio':
        return Form.Element.Serializers.inputSelector(element);
      default:
        return Form.Element.Serializers.textarea(element);
    }
  },

  inputSelector: function(element) {
    return element.checked ? element.value : null;
  },

  textarea: function(element) {
    return element.value;
  },

  select: function(element) {
    return this[element.type == 'select-one' ?
      'selectOne' : 'selectMany'](element);
  },

  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 = function() {}
Abstract.TimedObserver.prototype = {
  initialize: function(element, frequency, callback) {
    this.frequency = frequency;
    this.element   = $(element);
    this.callback  = callback;

    this.lastValue = this.getValue();
    this.registerCallback();
  },

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

  onTimerEvent: function() {
    var value = this.getValue();
    var changed = ('string' == typeof this.lastValue && 'string' == typeof value
      ? this.lastValue != value : String(this.lastValue) != String(value));
    if (changed) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  }
}

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

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

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

Abstract.EventObserver = function() {}
Abstract.EventObserver.prototype = {
  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.bind(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();
Form.Element.EventObserver.prototype = Object.extend(new Abstract.EventObserver(), {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

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

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,

  element: function(event) {
    return $(event.target || event.srcElement);
  },

  isLeftClick: function(event) {
    return (((event.which) && (event.which == 1)) ||
            ((event.button) && (event.button == 1)));
  },

  pointerX: function(event) {
    return event.pageX || (event.clientX +
      (document.documentElement.scrollLeft || document.body.scrollLeft));
  },

  pointerY: function(event) {
    return event.pageY || (event.clientY +
      (document.documentElement.scrollTop || document.body.scrollTop));
  },

  stop: function(event) {
    if (event.preventDefault) {
      event.preventDefault();
      event.stopPropagation();
    } else {
      event.returnValue = false;
      event.cancelBubble = true;
    }
  },

  // find the first node with the given tagName, starting from the
  // node the event was triggered on; traverses the DOM upwards
  findElement: function(event, tagName) {
    var element = Event.element(event);
    while (element.parentNode && (!element.tagName ||
        (element.tagName.toUpperCase() != tagName.toUpperCase())))
      element = element.parentNode;
    return element;
  },

  observers: false,

  _observeAndCache: function(element, name, observer, useCapture) {
    if (!this.observers) this.observers = [];
    if (element.addEventListener) {
      this.observers.push([element, name, observer, useCapture]);
      element.addEventListener(name, observer, useCapture);
    } else if (element.attachEvent) {
      this.observers.push([element, name, observer, useCapture]);
      element.attachEvent('on' + name, observer);
    }
  },

  unloadCache: function() {
    if (!Event.observers) return;
    for (var i = 0, length = Event.observers.length; i < length; i++) {
      Event.stopObserving.apply(this, Event.observers[i]);
      Event.observers[i][0] = null;
    }
    Event.observers = false;
  },

  observe: function(element, name, observer, useCapture) {
    element = $(element);
    useCapture = useCapture || false;

    if (name == 'keypress' &&
      (Prototype.Browser.WebKit || element.attachEvent))
      name = 'keydown';

    Event._observeAndCache(element, name, observer, useCapture);
  },

  stopObserving: function(element, name, observer, useCapture) {
    element = $(element);
    useCapture = useCapture || false;

    if (name == 'keypress' &&
        (Prototype.Browser.WebKit || element.attachEvent))
      name = 'keydown';

    if (element.removeEventListener) {
      element.removeEventListener(name, observer, useCapture);
    } else if (element.detachEvent) {
      try {
        element.detachEvent('on' + name, observer);
      } catch (e) {}
    }
  }
});

/* prevent memory leaks in IE */
if (Prototype.Browser.IE)
  Event.observe(window, 'unload', Event.unloadCache, false);
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;
  },

  realOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.scrollTop  || 0;
      valueL += element.scrollLeft || 0;
      element = element.parentNode;
    } while (element);
    return [valueL, valueT];
  },

  cumulativeOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
    } while (element);
    return [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 == 'relative' || p == 'absolute') break;
      }
    } while (element);
    return [valueL, valueT];
  },

  offsetParent: 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;
  },

  // 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 = this.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 = this.realOffset(element);

    this.xcomp = x + offsetcache[0] - this.deltaX;
    this.ycomp = y + offsetcache[1] - this.deltaY;
    this.offset = this.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;
  },

  page: 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)
        if (Element.getStyle(element,'position')=='absolute') break;

    } while (element = element.offsetParent);

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

    return [valueL, valueT];
  },

  clone: function(source, target) {
    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 = Position.page(source);

    // find coordinate system to use
    target = $(target);
    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(target,'position') == 'absolute') {
      parent = Position.offsetParent(target);
      delta = Position.page(parent);
    }

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

  absolutize: function(element) {
    element = $(element);
    if (element.style.position == 'absolute') return;
    Position.prepare();

    var offsets = Position.positionedOffset(element);
    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';
  },

  relativize: function(element) {
    element = $(element);
    if (element.style.position == 'relative') return;
    Position.prepare();

    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;
  }
}

// Safari returns margins on body which is incorrect if the child is absolutely
// positioned.  For performance reasons, redefine Position.cumulativeOffset for
// KHTML/WebKit only.
if (Prototype.Browser.WebKit) {
  Position.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 [valueL, valueT];
  }
}

Element.addMethods();

var Scriptaculous={Version:'1.7.1_beta2',require:function(libraryName){document.write('<script type="text/javascript" src="'+libraryName+'"></script>');},REQUIRED_PROTOTYPE:'1.5.1',load:function(){function convertVersionString(versionString){var r=versionString.split('.');return parseInt(r[0])*100000+parseInt(r[1])*1000+parseInt(r[2]);}
if((typeof Prototype=='undefined')||(typeof Element=='undefined')||(typeof Element.Methods=='undefined')||(convertVersionString(Prototype.Version)<convertVersionString(Scriptaculous.REQUIRED_PROTOTYPE)))
throw("script.aculo.us requires the Prototype JavaScript framework >= "+
Scriptaculous.REQUIRED_PROTOTYPE);$A(document.getElementsByTagName("script")).findAll(function(s){return(s.src&&s.src.match(/scriptaculous\.js(\?.*)?$/))}).each(function(s){var path=s.src.replace(/scriptaculous\.js(\?.*)?$/,'');var includes=s.src.match(/\?.*load=([a-z,]*)/);(includes?includes[1]:'builder,effects,dragdrop,controls,slider,sound').split(',').each(function(include){Scriptaculous.require(path+include+'.js')});});}}
var Builder={NODEMAP:{AREA:'map',CAPTION:'table',COL:'table',COLGROUP:'table',LEGEND:'fieldset',OPTGROUP:'select',OPTION:'select',PARAM:'object',TBODY:'table',TD:'table',TFOOT:'table',TH:'table',THEAD:'table',TR:'table'},node:function(elementName){elementName=elementName.toUpperCase();var parentTag=this.NODEMAP[elementName]||'div';var parentElement=document.createElement(parentTag);try{parentElement.innerHTML="<"+elementName+"></"+elementName+">";}catch(e){}
var element=parentElement.firstChild||null;if(element&&(element.tagName.toUpperCase()!=elementName))
element=element.getElementsByTagName(elementName)[0];if(!element)element=document.createElement(elementName);if(!element)return;if(arguments[1])
if(this._isStringOrNumber(arguments[1])||(arguments[1]instanceof Array)||arguments[1].tagName){this._children(element,arguments[1]);}else{var attrs=this._attributes(arguments[1]);if(attrs.length){try{parentElement.innerHTML="<"+elementName+" "+
attrs+"></"+elementName+">";}catch(e){}
element=parentElement.firstChild||null;if(!element){element=document.createElement(elementName);for(attr in arguments[1])
element[attr=='class'?'className':attr]=arguments[1][attr];}
if(element.tagName.toUpperCase()!=elementName)
element=parentElement.getElementsByTagName(elementName)[0];}}
if(arguments[2])
this._children(element,arguments[2]);return element;},_text:function(text){return document.createTextNode(text);},ATTR_MAP:{'className':'class','htmlFor':'for'},_attributes:function(attributes){var attrs=[];for(attribute in attributes)
attrs.push((attribute in this.ATTR_MAP?this.ATTR_MAP[attribute]:attribute)+'="'+attributes[attribute].toString().escapeHTML()+'"');return attrs.join(" ");},_children:function(element,children){if(children.tagName){element.appendChild(children);return;}
if(typeof children=='object'){children.flatten().each(function(e){if(typeof e=='object')
element.appendChild(e)
else
if(Builder._isStringOrNumber(e))
element.appendChild(Builder._text(e));});}else
if(Builder._isStringOrNumber(children))
element.appendChild(Builder._text(children));},_isStringOrNumber:function(param){return(typeof param=='string'||typeof param=='number');},build:function(html){var element=this.node('div');$(element).update(html.strip());return element.down();},dump:function(scope){if(typeof scope!='object'&&typeof scope!='function')scope=window;var tags=("A ABBR ACRONYM ADDRESS APPLET AREA B BASE BASEFONT BDO BIG BLOCKQUOTE BODY "+"BR BUTTON CAPTION CENTER CITE CODE COL COLGROUP DD DEL DFN DIR DIV DL DT EM FIELDSET "+"FONT FORM FRAME FRAMESET H1 H2 H3 H4 H5 H6 HEAD HR HTML I IFRAME IMG INPUT INS ISINDEX "+"KBD LABEL LEGEND LI LINK MAP MENU META NOFRAMES NOSCRIPT OBJECT OL OPTGROUP OPTION P "+"PARAM PRE Q S SAMP SCRIPT SELECT SMALL SPAN STRIKE STRONG STYLE SUB SUP TABLE TBODY TD "+"TEXTAREA TFOOT TH THEAD TITLE TR TT U UL VAR").split(/\s+/);tags.each(function(tag){scope[tag]=function(){return Builder.node.apply(Builder,[tag].concat($A(arguments)));}});}}
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){}};Array.prototype.call=function(){var args=arguments;this.each(function(f){f.apply(this,args)});}
var Effect={_elementDoesNotExistError:{name:'ElementDoesNotExistError',message:'The specified DOM element does not exist, but is required for this effect to operate'},tagifyText:function(element){if(typeof Builder=='undefined')
throw("Effect.tagifyText requires including script.aculo.us' builder.js library");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(Builder.node('span',{style:tagifyStyle},character==' '?String.fromCharCode(160):character),child);});Element.remove(child);}});},multiple:function(element,effect){var elements;if(((typeof element=='object')||(typeof element=='function'))&&(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);}};var Effect2=Effect;Effect.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(Math.round((pos%(1/pulses))*pulses)==0?((pos*pulses*2)-Math.floor(pos*pulses*2)):1-((pos*pulses*2)-Math.floor(pos*pulses*2)));},none:function(pos){return 0;},full:function(pos){return 1;}};Effect.ScopedQueue=Class.create();Object.extend(Object.extend(Effect.ScopedQueue.prototype,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=(typeof effect.options.queue=='string')?effect.options.queue:effect.options.queue.position;switch(position){case'front':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':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(typeof queueName!='string')return queueName;if(!this.instances[queueName])
this.instances[queueName]=new Effect.ScopedQueue();return this.instances[queueName];}}
Effect.Queue=Effect.Queues.get('global');Effect.DefaultOptions={transition:Effect.Transitions.sinoidal,duration:1.0,fps:100,sync:false,from:0.0,to:1.0,delay:0.0,queue:'parallel'}
Effect.Base=function(){};Effect.Base.prototype={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.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(options,'beforeSetup')+
(this.setup?'this.setup();':'')+
codeForEvent(options,'afterSetup')+'};if(this.state=="running"){'+'pos=this.options.transition(pos)*'+this.fromToDelta+'+'+this.options.from+';'+'this.position=pos;'+
codeForEvent(options,'beforeUpdate')+
(this.update?'this.update(pos);':'')+
codeForEvent(options,'afterUpdate')+'}}');this.event('beforeStart');if(!this.options.sync)
Effect.Queues.get(typeof this.options.queue=='string'?'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=Math.round(pos*this.totalFrames);if(frame>this.currentFrame){this.render(pos);this.currentFrame=frame;}}},cancel:function(){if(!this.options.sync)
Effect.Queues.get(typeof this.options.queue=='string'?'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=$H();for(property in this)
if(typeof this[property]!='function')data[property]=this[property];return'#<Effect:'+data.inspect()+',options:'+$H(this.options).inspect()+'>';}}
Effect.Parallel=Class.create();Object.extend(Object.extend(Effect.Parallel.prototype,Effect.Base.prototype),{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.Event=Class.create();Object.extend(Object.extend(Effect.Event.prototype,Effect.Base.prototype),{initialize:function(){var options=Object.extend({duration:0},arguments[0]||{});this.start(options);},update:Prototype.emptyFunction});Effect.Opacity=Class.create();Object.extend(Object.extend(Effect.Opacity.prototype,Effect.Base.prototype),{initialize:function(element){this.element=$(element);if(!this.element)throw(Effect._elementDoesNotExistError);if(Prototype.Browser.IE&&(!this.element.currentStyle.hasLayout))
this.element.setStyle({zoom:1});var options=Object.extend({from:this.element.getOpacity()||0.0,to:1.0},arguments[1]||{});this.start(options);},update:function(position){this.element.setOpacity(position);}});Effect.Move=Class.create();Object.extend(Object.extend(Effect.Move.prototype,Effect.Base.prototype),{initialize:function(element){this.element=$(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:Math.round(this.options.x*position+this.originalLeft)+'px',top:Math.round(this.options.y*position+this.originalTop)+'px'});}});Effect.MoveBy=function(element,toTop,toLeft){return new Effect.Move(element,Object.extend({x:toLeft,y:toTop},arguments[3]||{}));};Effect.Scale=Class.create();Object.extend(Object.extend(Effect.Scale.prototype,Effect.Base.prototype),{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',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=Math.round(width)+'px';if(this.options.scaleY)d.height=Math.round(height)+'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();Object.extend(Object.extend(Effect.Highlight.prototype,Effect.Base.prototype),{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(){if(this.element.getStyle('display')=='none'){this.cancel();return;}
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');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:$R(0,2).inject('#',function(m,v,i){return m+(Math.round(this._base[i]+(this._delta[i]*position)).toColorPart());}.bind(this))});},finish:function(){this.element.setStyle(Object.extend(this.oldStyle,{backgroundColor:this.options.restorecolor}));}});Effect.ScrollTo=Class.create();Object.extend(Object.extend(Effect.ScrollTo.prototype,Effect.Base.prototype),{initialize:function(element){this.element=$(element);this.start(arguments[1]||{});},setup:function(){Position.prepare();var offsets=Position.cumulativeOffset(this.element);if(this.options.offset)offsets[1]+=this.options.offset;var max=window.innerHeight?window.height-window.innerHeight:document.body.scrollHeight-
(document.documentElement.clientHeight?document.documentElement.clientHeight:document.body.clientHeight);this.scrollStart=Position.deltaY;this.delta=(offsets[1]>max?max:offsets[1])-this.scrollStart;},update:function(position){Position.prepare();window.scrollTo(Position.deltaX,this.scrollStart+(position*this.delta));}});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,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 oldStyle={top:element.getStyle('top'),left:element.getStyle('left')};return new Effect.Move(element,{x:20,y:0,duration:0.05,afterFinishInternal:function(effect){new Effect.Move(effect.element,{x:-40,y:0,duration:0.1,afterFinishInternal:function(effect){new Effect.Move(effect.element,{x:40,y:0,duration:0.1,afterFinishInternal:function(effect){new Effect.Move(effect.element,{x:-40,y:0,duration:0.1,afterFinishInternal:function(effect){new Effect.Move(effect.element,{x:40,y:0,duration:0.1,afterFinishInternal:function(effect){new Effect.Move(effect.element,{x:-20,y:0,duration:0.05,afterFinishInternal:function(effect){effect.element.undoPositioned().setStyle(oldStyle);}})}})}})}})}})}});}
Effect.SlideDown=function(element){element=$(element).cleanWhitespace();var oldInnerBottom=element.down().getStyle('bottom');var elementDimensions=element.getDimensions();return new Effect.Scale(element,100,Object.extend({scaleContent:false,scaleX:false,scaleFrom:window.opera?0:1,scaleMode:{originalHeight:elementDimensions.height,originalWidth:elementDimensions.width},restoreAfterFinish:true,afterSetup:function(effect){effect.element.makePositioned();effect.element.down().makePositioned();if(window.opera)effect.element.setStyle({top:''});effect.element.makeClipping().setStyle({height:'0px'}).show();},afterUpdateInternal:function(effect){effect.element.down().setStyle({bottom:(effect.dims[0]-effect.element.clientHeight)+'px'});},afterFinishInternal:function(effect){effect.element.undoClipping().undoPositioned();effect.element.down().undoPositioned().setStyle({bottom:oldInnerBottom});}},arguments[1]||{}));}
Effect.SlideUp=function(element){element=$(element).cleanWhitespace();var oldInnerBottom=element.down().getStyle('bottom');return new Effect.Scale(element,window.opera?0:1,Object.extend({scaleContent:false,scaleX:false,scaleMode:'box',scaleFrom:100,restoreAfterFinish:true,beforeStartInternal: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().setStyle({bottom:oldInnerBottom});effect.element.down().undoPositioned();}},arguments[1]||{}));}
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();Object.extend(Object.extend(Effect.Morph.prototype,Effect.Base.prototype),{initialize:function(element){this.element=$(element);if(!this.element)throw(Effect._elementDoesNotExistError);var options=Object.extend({style:{}},arguments[1]||{});if(typeof options.style=='string'){if(options.style.indexOf(':')==-1){var cssText='',selector='.'+options.style;$A(document.styleSheets).reverse().each(function(styleSheet){if(styleSheet.cssRules)cssRules=styleSheet.cssRules;else if(styleSheet.rules)cssRules=styleSheet.rules;$A(cssRules).reverse().each(function(rule){if(selector==rule.selectorText){cssText=rule.style.cssText;throw $break;}});if(cssText)throw $break;});this.style=cssText.parseStyle();options.afterFinishInternal=function(effect){effect.element.addClassName(effect.options.style);effect.transforms.each(function(transform){if(transform.style!='opacity')
effect.element.style[transform.style]='';});}}else this.style=options.style.parseStyle();}else this.style=$H(options.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+Math.round(((transform.targetValue-transform.originalValue)*position)*1000)/1000+transform.unit;this.element.setStyle(style,true);}});Effect.Transform=Class.create();Object.extend(Effect.Transform.prototype,{initialize:function(tracks){this.tracks=[];this.options=arguments[1]||{};this.addTracks(tracks);},addTracks:function(tracks){tracks.each(function(track){var data=$H(track).values().first();this.tracks.push($H({ids:$H(track).keys().first(),effect:Effect.Morph,options:{style:data}}));}.bind(this));return this;},play:function(){return new Effect.Parallel(this.tracks.map(function(track){var elements=[$(track.ids)||$$(track.ids)].flatten();return elements.map(function(e){return new track.effect(e,Object.extend({sync:true},track.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.prototype.parseStyle=function(){var element=document.createElement('div');element.innerHTML='<div style="'+this+'"></div>';var style=element.childNodes[0].style,styleRules=$H();Element.CSS_PROPERTIES.each(function(property){if(style[property])styleRules[property]=style[property];});if(Prototype.Browser.IE&&this.indexOf('opacity')>-1){styleRules.opacity=this.match(/opacity:\s*((?:0|1)?(?:\.\d*)?)/)[1];}
return styleRules;};Element.morph=function(element,style){new Effect.Morph(element,Object.extend({style:style},arguments[2]||{}));return element;};['getInlineOpacity','forceRerendering','setContentZoom','collectTextNodes','collectTextNodesIgnoreClass','morph'].each(function(f){Element.Methods[f]=Element[f];});Element.Methods.visualEffect=function(element,effect,options){s=effect.dasherize().camelize();effect_class=s.charAt(0).toUpperCase()+s.substring(1);new Effect[effect_class](element,options);return $(element);};Element.addMethods();if(typeof Effect=='undefined')
throw("dragdrop.js requires including script.aculo.us' effects.js library");var Droppables={drops:[],remove:function(element){this.drops=this.drops.reject(function(d){return d.element==$(element)});},add:function(element){element=$(element);var options=Object.extend({greedy:true,hoverclass:null,tree:false},arguments[1]||{});if(options.containment){options._containers=[];var containment=options.containment;if((typeof containment=='object')&&(containment.constructor==Array)){containment.each(function(c){options._containers.push($(c))});}else{options._containers.push($(containment));}}
if(options.accept)options.accept=[options.accept].flatten();Element.makePositioned(element);options.element=element;this.drops.push(options);},findDeepestChild:function(drops){deepest=drops[0];for(i=1;i<drops.length;++i)
if(Element.isParent(drops[i].element,deepest.element))
deepest=drops[i];return deepest;},isContained:function(element,drop){var containmentNode;if(drop.tree){containmentNode=element.treeNode;}else{containmentNode=element.parentNode;}
return drop._containers.detect(function(c){return containmentNode==c});},isAffected:function(point,element,drop){return((drop.element!=element)&&((!drop._containers)||this.isContained(element,drop))&&((!drop.accept)||(Element.classNames(element).detect(function(v){return drop.accept.include(v)})))&&Position.within(drop.element,point[0],point[1]));},deactivate:function(drop){if(drop.hoverclass)
Element.removeClassName(drop.element,drop.hoverclass);this.last_active=null;},activate:function(drop){if(drop.hoverclass)
Element.addClassName(drop.element,drop.hoverclass);this.last_active=drop;},show:function(point,element){if(!this.drops.length)return;var affected=[];if(this.last_active)this.deactivate(this.last_active);this.drops.each(function(drop){if(Droppables.isAffected(point,element,drop))
affected.push(drop);});if(affected.length>0){drop=Droppables.findDeepestChild(affected);Position.within(drop.element,point[0],point[1]);if(drop.onHover)
drop.onHover(element,drop.element,Position.overlap(drop.overlap,drop.element));Droppables.activate(drop);}},fire:function(event,element){if(!this.last_active)return;Position.prepare();if(this.isAffected([Event.pointerX(event),Event.pointerY(event)],element,this.last_active))
if(this.last_active.onDrop){this.last_active.onDrop(element,this.last_active.element,event);return true;}},reset:function(){if(this.last_active)
this.deactivate(this.last_active);}}
var Draggables={drags:[],observers:[],register:function(draggable){if(this.drags.length==0){this.eventMouseUp=this.endDrag.bindAsEventListener(this);this.eventMouseMove=this.updateDrag.bindAsEventListener(this);this.eventKeypress=this.keyPress.bindAsEventListener(this);Event.observe(document,"mouseup",this.eventMouseUp);Event.observe(document,"mousemove",this.eventMouseMove);Event.observe(document,"keypress",this.eventKeypress);}
this.drags.push(draggable);},unregister:function(draggable){this.drags=this.drags.reject(function(d){return d==draggable});if(this.drags.length==0){Event.stopObserving(document,"mouseup",this.eventMouseUp);Event.stopObserving(document,"mousemove",this.eventMouseMove);Event.stopObserving(document,"keypress",this.eventKeypress);}},activate:function(draggable){if(draggable.options.delay){this._timeout=setTimeout(function(){Draggables._timeout=null;window.focus();Draggables.activeDraggable=draggable;}.bind(this),draggable.options.delay);}else{window.focus();this.activeDraggable=draggable;}},deactivate:function(){this.activeDraggable=null;},updateDrag:function(event){if(!this.activeDraggable)return;var pointer=[Event.pointerX(event),Event.pointerY(event)];if(this._lastPointer&&(this._lastPointer.inspect()==pointer.inspect()))return;this._lastPointer=pointer;this.activeDraggable.updateDrag(event,pointer);},endDrag:function(event){if(this._timeout){clearTimeout(this._timeout);this._timeout=null;}
if(!this.activeDraggable)return;this._lastPointer=null;this.activeDraggable.endDrag(event);this.activeDraggable=null;},keyPress:function(event){if(this.activeDraggable)
this.activeDraggable.keyPress(event);},addObserver:function(observer){this.observers.push(observer);this._cacheObserverCallbacks();},removeObserver:function(element){this.observers=this.observers.reject(function(o){return o.element==element});this._cacheObserverCallbacks();},notify:function(eventName,draggable,event){if(this[eventName+'Count']>0)
this.observers.each(function(o){if(o[eventName])o[eventName](eventName,draggable,event);});if(draggable.options[eventName])draggable.options[eventName](draggable,event);},_cacheObserverCallbacks:function(){['onStart','onEnd','onDrag'].each(function(eventName){Draggables[eventName+'Count']=Draggables.observers.select(function(o){return o[eventName];}).length;});}}
var Draggable=Class.create();Draggable._dragging={};Draggable.prototype={initialize:function(element){var defaults={handle:false,reverteffect:function(element,top_offset,left_offset){var dur=Math.sqrt(Math.abs(top_offset^2)+Math.abs(left_offset^2))*0.02;new Effect.Move(element,{x:-left_offset,y:-top_offset,duration:dur,queue:{scope:'_draggable',position:'end'}});},endeffect:function(element){var toOpacity=typeof element._opacity=='number'?element._opacity:1.0;new Effect.Opacity(element,{duration:0.2,from:0.7,to:toOpacity,queue:{scope:'_draggable',position:'end'},afterFinish:function(){Draggable._dragging[element]=false}});},zindex:1000,revert:false,quiet:false,scroll:false,scrollSensitivity:20,scrollSpeed:15,snap:false,delay:0};if(!arguments[1]||typeof arguments[1].endeffect=='undefined')
Object.extend(defaults,{starteffect:function(element){element._opacity=Element.getOpacity(element);Draggable._dragging[element]=true;new Effect.Opacity(element,{duration:0.2,from:element._opacity,to:0.7});}});var options=Object.extend(defaults,arguments[1]||{});this.element=$(element);if(options.handle&&(typeof options.handle=='string'))
this.handle=this.element.down('.'+options.handle,0);if(!this.handle)this.handle=$(options.handle);if(!this.handle)this.handle=this.element;if(options.scroll&&!options.scroll.scrollTo&&!options.scroll.outerHTML){options.scroll=$(options.scroll);this._isScrollChild=Element.childOf(this.element,options.scroll);}
Element.makePositioned(this.element);this.delta=this.currentDelta();this.options=options;this.dragging=false;this.eventMouseDown=this.initDrag.bindAsEventListener(this);Event.observe(this.handle,"mousedown",this.eventMouseDown);Draggables.register(this);},destroy:function(){Event.stopObserving(this.handle,"mousedown",this.eventMouseDown);Draggables.unregister(this);},currentDelta:function(){return([parseInt(Element.getStyle(this.element,'left')||'0'),parseInt(Element.getStyle(this.element,'top')||'0')]);},initDrag:function(event){if(typeof Draggable._dragging[this.element]!='undefined'&&Draggable._dragging[this.element])return;if(Event.isLeftClick(event)){var src=Event.element(event);if((tag_name=src.tagName.toUpperCase())&&(tag_name=='INPUT'||tag_name=='SELECT'||tag_name=='OPTION'||tag_name=='BUTTON'||tag_name=='TEXTAREA'))return;var pointer=[Event.pointerX(event),Event.pointerY(event)];var pos=Position.cumulativeOffset(this.element);this.offset=[0,1].map(function(i){return(pointer[i]-pos[i])});Draggables.activate(this);Event.stop(event);}},startDrag:function(event){this.dragging=true;if(this.options.zindex){this.originalZ=parseInt(Element.getStyle(this.element,'z-index')||0);this.element.style.zIndex=this.options.zindex;}
if(this.options.ghosting){this._clone=this.element.cloneNode(true);Position.absolutize(this.element);this.element.parentNode.insertBefore(this._clone,this.element);}
if(this.options.scroll){if(this.options.scroll==window){var where=this._getWindowScroll(this.options.scroll);this.originalScrollLeft=where.left;this.originalScrollTop=where.top;}else{this.originalScrollLeft=this.options.scroll.scrollLeft;this.originalScrollTop=this.options.scroll.scrollTop;}}
Draggables.notify('onStart',this,event);if(this.options.starteffect)this.options.starteffect(this.element);},updateDrag:function(event,pointer){if(!this.dragging)this.startDrag(event);if(!this.options.quiet){Position.prepare();Droppables.show(pointer,this.element);}
Draggables.notify('onDrag',this,event);this.draw(pointer);if(this.options.change)this.options.change(this);if(this.options.scroll){this.stopScrolling();var p;if(this.options.scroll==window){with(this._getWindowScroll(this.options.scroll)){p=[left,top,left+width,top+height];}}else{p=Position.page(this.options.scroll);p[0]+=this.options.scroll.scrollLeft+Position.deltaX;p[1]+=this.options.scroll.scrollTop+Position.deltaY;p.push(p[0]+this.options.scroll.offsetWidth);p.push(p[1]+this.options.scroll.offsetHeight);}
var speed=[0,0];if(pointer[0]<(p[0]+this.options.scrollSensitivity))speed[0]=pointer[0]-(p[0]+this.options.scrollSensitivity);if(pointer[1]<(p[1]+this.options.scrollSensitivity))speed[1]=pointer[1]-(p[1]+this.options.scrollSensitivity);if(pointer[0]>(p[2]-this.options.scrollSensitivity))speed[0]=pointer[0]-(p[2]-this.options.scrollSensitivity);if(pointer[1]>(p[3]-this.options.scrollSensitivity))speed[1]=pointer[1]-(p[3]-this.options.scrollSensitivity);this.startScrolling(speed);}
if(Prototype.Browser.WebKit)window.scrollBy(0,0);Event.stop(event);},finishDrag:function(event,success){this.dragging=false;if(this.options.quiet){Position.prepare();var pointer=[Event.pointerX(event),Event.pointerY(event)];Droppables.show(pointer,this.element);}
if(this.options.ghosting){Position.relativize(this.element);Element.remove(this._clone);this._clone=null;}
var dropped=false;if(success){dropped=Droppables.fire(event,this.element);if(!dropped)dropped=false;}
if(dropped&&this.options.onDropped)this.options.onDropped(this.element);Draggables.notify('onEnd',this,event);var revert=this.options.revert;if(revert&&typeof revert=='function')revert=revert(this.element);var d=this.currentDelta();if(revert&&this.options.reverteffect){if(dropped==0||revert!='failure')
this.options.reverteffect(this.element,d[1]-this.delta[1],d[0]-this.delta[0]);}else{this.delta=d;}
if(this.options.zindex)
this.element.style.zIndex=this.originalZ;if(this.options.endeffect)
this.options.endeffect(this.element);Draggables.deactivate(this);Droppables.reset();},keyPress:function(event){if(event.keyCode!=Event.KEY_ESC)return;this.finishDrag(event,false);Event.stop(event);},endDrag:function(event){if(!this.dragging)return;this.stopScrolling();this.finishDrag(event,true);Event.stop(event);},draw:function(point){var pos=Position.cumulativeOffset(this.element);if(this.options.ghosting){var r=Position.realOffset(this.element);pos[0]+=r[0]-Position.deltaX;pos[1]+=r[1]-Position.deltaY;}
var d=this.currentDelta();pos[0]-=d[0];pos[1]-=d[1];if(this.options.scroll&&(this.options.scroll!=window&&this._isScrollChild)){pos[0]-=this.options.scroll.scrollLeft-this.originalScrollLeft;pos[1]-=this.options.scroll.scrollTop-this.originalScrollTop;}
var p=[0,1].map(function(i){return(point[i]-pos[i]-this.offset[i])}.bind(this));if(this.options.snap){if(typeof this.options.snap=='function'){p=this.options.snap(p[0],p[1],this);}else{if(this.options.snap instanceof Array){p=p.map(function(v,i){return Math.round(v/this.options.snap[i])*this.options.snap[i]}.bind(this))}else{p=p.map(function(v){return Math.round(v/this.options.snap)*this.options.snap}.bind(this))}}}
var style=this.element.style;if((!this.options.constraint)||(this.options.constraint=='horizontal'))
style.left=p[0]+"px";if((!this.options.constraint)||(this.options.constraint=='vertical'))
style.top=p[1]+"px";if(style.visibility=="hidden")style.visibility="";},stopScrolling:function(){if(this.scrollInterval){clearInterval(this.scrollInterval);this.scrollInterval=null;Draggables._lastScrollPointer=null;}},startScrolling:function(speed){if(!(speed[0]||speed[1]))return;this.scrollSpeed=[speed[0]*this.options.scrollSpeed,speed[1]*this.options.scrollSpeed];this.lastScrolled=new Date();this.scrollInterval=setInterval(this.scroll.bind(this),10);},scroll:function(){var current=new Date();var delta=current-this.lastScrolled;this.lastScrolled=current;if(this.options.scroll==window){with(this._getWindowScroll(this.options.scroll)){if(this.scrollSpeed[0]||this.scrollSpeed[1]){var d=delta/1000;this.options.scroll.scrollTo(left+d*this.scrollSpeed[0],top+d*this.scrollSpeed[1]);}}}else{this.options.scroll.scrollLeft+=this.scrollSpeed[0]*delta/1000;this.options.scroll.scrollTop+=this.scrollSpeed[1]*delta/1000;}
Position.prepare();Droppables.show(Draggables._lastPointer,this.element);Draggables.notify('onDrag',this);if(this._isScrollChild){Draggables._lastScrollPointer=Draggables._lastScrollPointer||$A(Draggables._lastPointer);Draggables._lastScrollPointer[0]+=this.scrollSpeed[0]*delta/1000;Draggables._lastScrollPointer[1]+=this.scrollSpeed[1]*delta/1000;if(Draggables._lastScrollPointer[0]<0)
Draggables._lastScrollPointer[0]=0;if(Draggables._lastScrollPointer[1]<0)
Draggables._lastScrollPointer[1]=0;this.draw(Draggables._lastScrollPointer);}
if(this.options.change)this.options.change(this);},_getWindowScroll:function(w){var T,L,W,H;with(w.document){if(w.document.documentElement&&documentElement.scrollTop){T=documentElement.scrollTop;L=documentElement.scrollLeft;}else if(w.document.body){T=body.scrollTop;L=body.scrollLeft;}
if(w.innerWidth){W=w.innerWidth;H=w.innerHeight;}else if(w.document.documentElement&&documentElement.clientWidth){W=documentElement.clientWidth;H=documentElement.clientHeight;}else{W=body.offsetWidth;H=body.offsetHeight}}
return{top:T,left:L,width:W,height:H};}}
var SortableObserver=Class.create();SortableObserver.prototype={initialize:function(element,observer){this.element=$(element);this.observer=observer;this.lastValue=Sortable.serialize(this.element);},onStart:function(){this.lastValue=Sortable.serialize(this.element);},onEnd:function(){Sortable.unmark();if(this.lastValue!=Sortable.serialize(this.element))
this.observer(this.element)}}
var Sortable={SERIALIZE_RULE:/^[^_\-](?:[A-Za-z0-9\-\_]*)[_](.*)$/,sortables:{},_findRootElement:function(element){while(element.tagName.toUpperCase()!="BODY"){if(element.id&&Sortable.sortables[element.id])return element;element=element.parentNode;}},options:function(element){element=Sortable._findRootElement($(element));if(!element)return;return Sortable.sortables[element.id];},destroy:function(element){var s=Sortable.options(element);if(s){Draggables.removeObserver(s.element);s.droppables.each(function(d){Droppables.remove(d)});s.draggables.invoke('destroy');delete Sortable.sortables[s.element.id];}},create:function(element){element=$(element);var options=Object.extend({element:element,tag:'li',dropOnEmpty:false,tree:false,treeTag:'ul',overlap:'vertical',constraint:'vertical',containment:element,handle:false,only:false,delay:0,hoverclass:null,ghosting:false,quiet:false,scroll:false,scrollSensitivity:20,scrollSpeed:15,format:this.SERIALIZE_RULE,onChange:Prototype.emptyFunction,onUpdate:Prototype.emptyFunction},arguments[1]||{});this.destroy(element);var options_for_draggable={revert:true,quiet:options.quiet,scroll:options.scroll,scrollSpeed:options.scrollSpeed,scrollSensitivity:options.scrollSensitivity,delay:options.delay,ghosting:options.ghosting,constraint:options.constraint,handle:options.handle};if(options.starteffect)
options_for_draggable.starteffect=options.starteffect;if(options.reverteffect)
options_for_draggable.reverteffect=options.reverteffect;else
if(options.ghosting)options_for_draggable.reverteffect=function(element){element.style.top=0;element.style.left=0;};if(options.endeffect)
options_for_draggable.endeffect=options.endeffect;if(options.zindex)
options_for_draggable.zindex=options.zindex;var options_for_droppable={overlap:options.overlap,containment:options.containment,tree:options.tree,hoverclass:options.hoverclass,onHover:Sortable.onHover}
var options_for_tree={onHover:Sortable.onEmptyHover,overlap:options.overlap,containment:options.containment,hoverclass:options.hoverclass}
Element.cleanWhitespace(element);options.draggables=[];options.droppables=[];if(options.dropOnEmpty||options.tree){Droppables.add(element,options_for_tree);options.droppables.push(element);}
(this.findElements(element,options)||[]).each(function(e){var handle=options.handle?$(e).down('.'+options.handle,0):e;options.draggables.push(new Draggable(e,Object.extend(options_for_draggable,{handle:handle})));Droppables.add(e,options_for_droppable);if(options.tree)e.treeNode=element;options.droppables.push(e);});if(options.tree){(Sortable.findTreeElements(element,options)||[]).each(function(e){Droppables.add(e,options_for_tree);e.treeNode=element;options.droppables.push(e);});}
this.sortables[element.id]=options;Draggables.addObserver(new SortableObserver(element,options.onUpdate));},findElements:function(element,options){return Element.findChildren(element,options.only,options.tree?true:false,options.tag);},findTreeElements:function(element,options){return Element.findChildren(element,options.only,options.tree?true:false,options.treeTag);},onHover:function(element,dropon,overlap){if(Element.isParent(dropon,element))return;if(overlap>.33&&overlap<.66&&Sortable.options(dropon).tree){return;}else if(overlap>0.5){Sortable.mark(dropon,'before');if(dropon.previousSibling!=element){var oldParentNode=element.parentNode;element.style.visibility="hidden";dropon.parentNode.insertBefore(element,dropon);if(dropon.parentNode!=oldParentNode)
Sortable.options(oldParentNode).onChange(element);Sortable.options(dropon.parentNode).onChange(element);}}else{Sortable.mark(dropon,'after');var nextElement=dropon.nextSibling||null;if(nextElement!=element){var oldParentNode=element.parentNode;element.style.visibility="hidden";dropon.parentNode.insertBefore(element,nextElement);if(dropon.parentNode!=oldParentNode)
Sortable.options(oldParentNode).onChange(element);Sortable.options(dropon.parentNode).onChange(element);}}},onEmptyHover:function(element,dropon,overlap){var oldParentNode=element.parentNode;var droponOptions=Sortable.options(dropon);if(!Element.isParent(dropon,element)){var index;var children=Sortable.findElements(dropon,{tag:droponOptions.tag,only:droponOptions.only});var child=null;if(children){var offset=Element.offsetSize(dropon,droponOptions.overlap)*(1.0-overlap);for(index=0;index<children.length;index+=1){if(offset-Element.offsetSize(children[index],droponOptions.overlap)>=0){offset-=Element.offsetSize(children[index],droponOptions.overlap);}else if(offset-(Element.offsetSize(children[index],droponOptions.overlap)/2)>=0){child=index+1<children.length?children[index+1]:null;break;}else{child=children[index];break;}}}
dropon.insertBefore(element,child);Sortable.options(oldParentNode).onChange(element);droponOptions.onChange(element);}},unmark:function(){if(Sortable._marker)Sortable._marker.hide();},mark:function(dropon,position){var sortable=Sortable.options(dropon.parentNode);if(sortable&&!sortable.ghosting)return;if(!Sortable._marker){Sortable._marker=($('dropmarker')||Element.extend(document.createElement('DIV'))).hide().addClassName('dropmarker').setStyle({position:'absolute'});document.getElementsByTagName("body").item(0).appendChild(Sortable._marker);}
var offsets=Position.cumulativeOffset(dropon);Sortable._marker.setStyle({left:offsets[0]+'px',top:offsets[1]+'px'});if(position=='after')
if(sortable.overlap=='horizontal')
Sortable._marker.setStyle({left:(offsets[0]+dropon.clientWidth)+'px'});else
Sortable._marker.setStyle({top:(offsets[1]+dropon.clientHeight)+'px'});Sortable._marker.show();},_tree:function(element,options,parent){var children=Sortable.findElements(element,options)||[];for(var i=0;i<children.length;++i){var match=children[i].id.match(options.format);if(!match)continue;var child={id:encodeURIComponent(match?match[1]:null),element:element,parent:parent,children:[],position:parent.children.length,container:$(children[i]).down(options.treeTag)}
if(child.container)
this._tree(child.container,options,child)
parent.children.push(child);}
return parent;},tree:function(element){element=$(element);var sortableOptions=this.options(element);var options=Object.extend({tag:sortableOptions.tag,treeTag:sortableOptions.treeTag,only:sortableOptions.only,name:element.id,format:sortableOptions.format},arguments[1]||{});var root={id:null,parent:null,children:[],container:element,position:0}
return Sortable._tree(element,options,root);},_constructIndex:function(node){var index='';do{if(node.id)index='['+node.position+']'+index;}while((node=node.parent)!=null);return index;},sequence:function(element){element=$(element);var options=Object.extend(this.options(element),arguments[1]||{});return $(this.findElements(element,options)||[]).map(function(item){return item.id.match(options.format)?item.id.match(options.format)[1]:'';});},setSequence:function(element,new_sequence){element=$(element);var options=Object.extend(this.options(element),arguments[2]||{});var nodeMap={};this.findElements(element,options).each(function(n){if(n.id.match(options.format))
nodeMap[n.id.match(options.format)[1]]=[n,n.parentNode];n.parentNode.removeChild(n);});new_sequence.each(function(ident){var n=nodeMap[ident];if(n){n[1].appendChild(n[0]);delete nodeMap[ident];}});},serialize:function(element){element=$(element);var options=Object.extend(Sortable.options(element),arguments[1]||{});var name=encodeURIComponent((arguments[1]&&arguments[1].name)?arguments[1].name:element.id);if(options.tree){return Sortable.tree(element,arguments[1]).children.map(function(item){return[name+Sortable._constructIndex(item)+"[id]="+
encodeURIComponent(item.id)].concat(item.children.map(arguments.callee));}).flatten().join('&');}else{return Sortable.sequence(element,arguments[1]).map(function(item){return name+"[]="+encodeURIComponent(item);}).join('&');}}}
Element.isParent=function(child,element){if(!child.parentNode||child==element)return false;if(child.parentNode==element)return true;return Element.isParent(child.parentNode,element);}
Element.findChildren=function(element,only,recursive,tagName){if(!element.hasChildNodes())return null;tagName=tagName.toUpperCase();if(only)only=[only].flatten();var elements=[];$A(element.childNodes).each(function(e){if(e.tagName&&e.tagName.toUpperCase()==tagName&&(!only||(Element.classNames(e).detect(function(v){return only.include(v)}))))
elements.push(e);if(recursive){var grandchildren=Element.findChildren(e,only,recursive,tagName);if(grandchildren)elements.push(grandchildren);}});return(elements.length>0?elements.flatten():[]);}
Element.offsetSize=function(element,type){return element['offset'+((type=='vertical'||type=='height')?'Height':'Width')];}
if(typeof Effect=='undefined')
throw("dragdrop.js requires including script.aculo.us' effects.js library");var Droppables={drops:[],remove:function(element){this.drops=this.drops.reject(function(d){return d.element==$(element)});},add:function(element){element=$(element);var options=Object.extend({greedy:true,hoverclass:null,tree:false},arguments[1]||{});if(options.containment){options._containers=[];var containment=options.containment;if((typeof containment=='object')&&(containment.constructor==Array)){containment.each(function(c){options._containers.push($(c))});}else{options._containers.push($(containment));}}
if(options.accept)options.accept=[options.accept].flatten();Element.makePositioned(element);options.element=element;this.drops.push(options);},findDeepestChild:function(drops){deepest=drops[0];for(i=1;i<drops.length;++i)
if(Element.isParent(drops[i].element,deepest.element))
deepest=drops[i];return deepest;},isContained:function(element,drop){var containmentNode;if(drop.tree){containmentNode=element.treeNode;}else{containmentNode=element.parentNode;}
return drop._containers.detect(function(c){return containmentNode==c});},isAffected:function(point,element,drop){return((drop.element!=element)&&((!drop._containers)||this.isContained(element,drop))&&((!drop.accept)||(Element.classNames(element).detect(function(v){return drop.accept.include(v)})))&&Position.within(drop.element,point[0],point[1]));},deactivate:function(drop){if(drop.hoverclass)
Element.removeClassName(drop.element,drop.hoverclass);this.last_active=null;},activate:function(drop){if(drop.hoverclass)
Element.addClassName(drop.element,drop.hoverclass);this.last_active=drop;},show:function(point,element){if(!this.drops.length)return;var affected=[];if(this.last_active)this.deactivate(this.last_active);this.drops.each(function(drop){if(Droppables.isAffected(point,element,drop))
affected.push(drop);});if(affected.length>0){drop=Droppables.findDeepestChild(affected);Position.within(drop.element,point[0],point[1]);if(drop.onHover)
drop.onHover(element,drop.element,Position.overlap(drop.overlap,drop.element));Droppables.activate(drop);}},fire:function(event,element){if(!this.last_active)return;Position.prepare();if(this.isAffected([Event.pointerX(event),Event.pointerY(event)],element,this.last_active))
if(this.last_active.onDrop){this.last_active.onDrop(element,this.last_active.element,event);return true;}},reset:function(){if(this.last_active)
this.deactivate(this.last_active);}}
var Draggables={drags:[],observers:[],register:function(draggable){if(this.drags.length==0){this.eventMouseUp=this.endDrag.bindAsEventListener(this);this.eventMouseMove=this.updateDrag.bindAsEventListener(this);this.eventKeypress=this.keyPress.bindAsEventListener(this);Event.observe(document,"mouseup",this.eventMouseUp);Event.observe(document,"mousemove",this.eventMouseMove);Event.observe(document,"keypress",this.eventKeypress);}
this.drags.push(draggable);},unregister:function(draggable){this.drags=this.drags.reject(function(d){return d==draggable});if(this.drags.length==0){Event.stopObserving(document,"mouseup",this.eventMouseUp);Event.stopObserving(document,"mousemove",this.eventMouseMove);Event.stopObserving(document,"keypress",this.eventKeypress);}},activate:function(draggable){if(draggable.options.delay){this._timeout=setTimeout(function(){Draggables._timeout=null;window.focus();Draggables.activeDraggable=draggable;}.bind(this),draggable.options.delay);}else{window.focus();this.activeDraggable=draggable;}},deactivate:function(){this.activeDraggable=null;},updateDrag:function(event){if(!this.activeDraggable)return;var pointer=[Event.pointerX(event),Event.pointerY(event)];if(this._lastPointer&&(this._lastPointer.inspect()==pointer.inspect()))return;this._lastPointer=pointer;this.activeDraggable.updateDrag(event,pointer);},endDrag:function(event){if(this._timeout){clearTimeout(this._timeout);this._timeout=null;}
if(!this.activeDraggable)return;this._lastPointer=null;this.activeDraggable.endDrag(event);this.activeDraggable=null;},keyPress:function(event){if(this.activeDraggable)
this.activeDraggable.keyPress(event);},addObserver:function(observer){this.observers.push(observer);this._cacheObserverCallbacks();},removeObserver:function(element){this.observers=this.observers.reject(function(o){return o.element==element});this._cacheObserverCallbacks();},notify:function(eventName,draggable,event){if(this[eventName+'Count']>0)
this.observers.each(function(o){if(o[eventName])o[eventName](eventName,draggable,event);});if(draggable.options[eventName])draggable.options[eventName](draggable,event);},_cacheObserverCallbacks:function(){['onStart','onEnd','onDrag'].each(function(eventName){Draggables[eventName+'Count']=Draggables.observers.select(function(o){return o[eventName];}).length;});}}
var Draggable=Class.create();Draggable._dragging={};Draggable.prototype={initialize:function(element){var defaults={handle:false,reverteffect:function(element,top_offset,left_offset){var dur=Math.sqrt(Math.abs(top_offset^2)+Math.abs(left_offset^2))*0.02;new Effect.Move(element,{x:-left_offset,y:-top_offset,duration:dur,queue:{scope:'_draggable',position:'end'}});},endeffect:function(element){var toOpacity=typeof element._opacity=='number'?element._opacity:1.0;new Effect.Opacity(element,{duration:0.2,from:0.7,to:toOpacity,queue:{scope:'_draggable',position:'end'},afterFinish:function(){Draggable._dragging[element]=false}});},zindex:1000,revert:false,quiet:false,scroll:false,scrollSensitivity:20,scrollSpeed:15,snap:false,delay:0};if(!arguments[1]||typeof arguments[1].endeffect=='undefined')
Object.extend(defaults,{starteffect:function(element){element._opacity=Element.getOpacity(element);Draggable._dragging[element]=true;new Effect.Opacity(element,{duration:0.2,from:element._opacity,to:0.7});}});var options=Object.extend(defaults,arguments[1]||{});this.element=$(element);if(options.handle&&(typeof options.handle=='string'))
this.handle=this.element.down('.'+options.handle,0);if(!this.handle)this.handle=$(options.handle);if(!this.handle)this.handle=this.element;if(options.scroll&&!options.scroll.scrollTo&&!options.scroll.outerHTML){options.scroll=$(options.scroll);this._isScrollChild=Element.childOf(this.element,options.scroll);}
Element.makePositioned(this.element);this.delta=this.currentDelta();this.options=options;this.dragging=false;this.eventMouseDown=this.initDrag.bindAsEventListener(this);Event.observe(this.handle,"mousedown",this.eventMouseDown);Draggables.register(this);},destroy:function(){Event.stopObserving(this.handle,"mousedown",this.eventMouseDown);Draggables.unregister(this);},currentDelta:function(){return([parseInt(Element.getStyle(this.element,'left')||'0'),parseInt(Element.getStyle(this.element,'top')||'0')]);},initDrag:function(event){if(typeof Draggable._dragging[this.element]!='undefined'&&Draggable._dragging[this.element])return;if(Event.isLeftClick(event)){var src=Event.element(event);if((tag_name=src.tagName.toUpperCase())&&(tag_name=='INPUT'||tag_name=='SELECT'||tag_name=='OPTION'||tag_name=='BUTTON'||tag_name=='TEXTAREA'))return;var pointer=[Event.pointerX(event),Event.pointerY(event)];var pos=Position.cumulativeOffset(this.element);this.offset=[0,1].map(function(i){return(pointer[i]-pos[i])});Draggables.activate(this);Event.stop(event);}},startDrag:function(event){this.dragging=true;if(this.options.zindex){this.originalZ=parseInt(Element.getStyle(this.element,'z-index')||0);this.element.style.zIndex=this.options.zindex;}
if(this.options.ghosting){this._clone=this.element.cloneNode(true);Position.absolutize(this.element);this.element.parentNode.insertBefore(this._clone,this.element);}
if(this.options.scroll){if(this.options.scroll==window){var where=this._getWindowScroll(this.options.scroll);this.originalScrollLeft=where.left;this.originalScrollTop=where.top;}else{this.originalScrollLeft=this.options.scroll.scrollLeft;this.originalScrollTop=this.options.scroll.scrollTop;}}
Draggables.notify('onStart',this,event);if(this.options.starteffect)this.options.starteffect(this.element);},updateDrag:function(event,pointer){if(!this.dragging)this.startDrag(event);if(!this.options.quiet){Position.prepare();Droppables.show(pointer,this.element);}
Draggables.notify('onDrag',this,event);this.draw(pointer);if(this.options.change)this.options.change(this);if(this.options.scroll){this.stopScrolling();var p;if(this.options.scroll==window){with(this._getWindowScroll(this.options.scroll)){p=[left,top,left+width,top+height];}}else{p=Position.page(this.options.scroll);p[0]+=this.options.scroll.scrollLeft+Position.deltaX;p[1]+=this.options.scroll.scrollTop+Position.deltaY;p.push(p[0]+this.options.scroll.offsetWidth);p.push(p[1]+this.options.scroll.offsetHeight);}
var speed=[0,0];if(pointer[0]<(p[0]+this.options.scrollSensitivity))speed[0]=pointer[0]-(p[0]+this.options.scrollSensitivity);if(pointer[1]<(p[1]+this.options.scrollSensitivity))speed[1]=pointer[1]-(p[1]+this.options.scrollSensitivity);if(pointer[0]>(p[2]-this.options.scrollSensitivity))speed[0]=pointer[0]-(p[2]-this.options.scrollSensitivity);if(pointer[1]>(p[3]-this.options.scrollSensitivity))speed[1]=pointer[1]-(p[3]-this.options.scrollSensitivity);this.startScrolling(speed);}
if(Prototype.Browser.WebKit)window.scrollBy(0,0);Event.stop(event);},finishDrag:function(event,success){this.dragging=false;if(this.options.quiet){Position.prepare();var pointer=[Event.pointerX(event),Event.pointerY(event)];Droppables.show(pointer,this.element);}
if(this.options.ghosting){Position.relativize(this.element);Element.remove(this._clone);this._clone=null;}
var dropped=false;if(success){dropped=Droppables.fire(event,this.element);if(!dropped)dropped=false;}
if(dropped&&this.options.onDropped)this.options.onDropped(this.element);Draggables.notify('onEnd',this,event);var revert=this.options.revert;if(revert&&typeof revert=='function')revert=revert(this.element);var d=this.currentDelta();if(revert&&this.options.reverteffect){if(dropped==0||revert!='failure')
this.options.reverteffect(this.element,d[1]-this.delta[1],d[0]-this.delta[0]);}else{this.delta=d;}
if(this.options.zindex)
this.element.style.zIndex=this.originalZ;if(this.options.endeffect)
this.options.endeffect(this.element);Draggables.deactivate(this);Droppables.reset();},keyPress:function(event){if(event.keyCode!=Event.KEY_ESC)return;this.finishDrag(event,false);Event.stop(event);},endDrag:function(event){if(!this.dragging)return;this.stopScrolling();this.finishDrag(event,true);Event.stop(event);},draw:function(point){var pos=Position.cumulativeOffset(this.element);if(this.options.ghosting){var r=Position.realOffset(this.element);pos[0]+=r[0]-Position.deltaX;pos[1]+=r[1]-Position.deltaY;}
var d=this.currentDelta();pos[0]-=d[0];pos[1]-=d[1];if(this.options.scroll&&(this.options.scroll!=window&&this._isScrollChild)){pos[0]-=this.options.scroll.scrollLeft-this.originalScrollLeft;pos[1]-=this.options.scroll.scrollTop-this.originalScrollTop;}
var p=[0,1].map(function(i){return(point[i]-pos[i]-this.offset[i])}.bind(this));if(this.options.snap){if(typeof this.options.snap=='function'){p=this.options.snap(p[0],p[1],this);}else{if(this.options.snap instanceof Array){p=p.map(function(v,i){return Math.round(v/this.options.snap[i])*this.options.snap[i]}.bind(this))}else{p=p.map(function(v){return Math.round(v/this.options.snap)*this.options.snap}.bind(this))}}}
var style=this.element.style;if((!this.options.constraint)||(this.options.constraint=='horizontal'))
style.left=p[0]+"px";if((!this.options.constraint)||(this.options.constraint=='vertical'))
style.top=p[1]+"px";if(style.visibility=="hidden")style.visibility="";},stopScrolling:function(){if(this.scrollInterval){clearInterval(this.scrollInterval);this.scrollInterval=null;Draggables._lastScrollPointer=null;}},startScrolling:function(speed){if(!(speed[0]||speed[1]))return;this.scrollSpeed=[speed[0]*this.options.scrollSpeed,speed[1]*this.options.scrollSpeed];this.lastScrolled=new Date();this.scrollInterval=setInterval(this.scroll.bind(this),10);},scroll:function(){var current=new Date();var delta=current-this.lastScrolled;this.lastScrolled=current;if(this.options.scroll==window){with(this._getWindowScroll(this.options.scroll)){if(this.scrollSpeed[0]||this.scrollSpeed[1]){var d=delta/1000;this.options.scroll.scrollTo(left+d*this.scrollSpeed[0],top+d*this.scrollSpeed[1]);}}}else{this.options.scroll.scrollLeft+=this.scrollSpeed[0]*delta/1000;this.options.scroll.scrollTop+=this.scrollSpeed[1]*delta/1000;}
Position.prepare();Droppables.show(Draggables._lastPointer,this.element);Draggables.notify('onDrag',this);if(this._isScrollChild){Draggables._lastScrollPointer=Draggables._lastScrollPointer||$A(Draggables._lastPointer);Draggables._lastScrollPointer[0]+=this.scrollSpeed[0]*delta/1000;Draggables._lastScrollPointer[1]+=this.scrollSpeed[1]*delta/1000;if(Draggables._lastScrollPointer[0]<0)
Draggables._lastScrollPointer[0]=0;if(Draggables._lastScrollPointer[1]<0)
Draggables._lastScrollPointer[1]=0;this.draw(Draggables._lastScrollPointer);}
if(this.options.change)this.options.change(this);},_getWindowScroll:function(w){var T,L,W,H;with(w.document){if(w.document.documentElement&&documentElement.scrollTop){T=documentElement.scrollTop;L=documentElement.scrollLeft;}else if(w.document.body){T=body.scrollTop;L=body.scrollLeft;}
if(w.innerWidth){W=w.innerWidth;H=w.innerHeight;}else if(w.document.documentElement&&documentElement.clientWidth){W=documentElement.clientWidth;H=documentElement.clientHeight;}else{W=body.offsetWidth;H=body.offsetHeight}}
return{top:T,left:L,width:W,height:H};}}
var SortableObserver=Class.create();SortableObserver.prototype={initialize:function(element,observer){this.element=$(element);this.observer=observer;this.lastValue=Sortable.serialize(this.element);},onStart:function(){this.lastValue=Sortable.serialize(this.element);},onEnd:function(){Sortable.unmark();if(this.lastValue!=Sortable.serialize(this.element))
this.observer(this.element)}}
var Sortable={SERIALIZE_RULE:/^[^_\-](?:[A-Za-z0-9\-\_]*)[_](.*)$/,sortables:{},_findRootElement:function(element){while(element.tagName.toUpperCase()!="BODY"){if(element.id&&Sortable.sortables[element.id])return element;element=element.parentNode;}},options:function(element){element=Sortable._findRootElement($(element));if(!element)return;return Sortable.sortables[element.id];},destroy:function(element){var s=Sortable.options(element);if(s){Draggables.removeObserver(s.element);s.droppables.each(function(d){Droppables.remove(d)});s.draggables.invoke('destroy');delete Sortable.sortables[s.element.id];}},create:function(element){element=$(element);var options=Object.extend({element:element,tag:'li',dropOnEmpty:false,tree:false,treeTag:'ul',overlap:'vertical',constraint:'vertical',containment:element,handle:false,only:false,delay:0,hoverclass:null,ghosting:false,quiet:false,scroll:false,scrollSensitivity:20,scrollSpeed:15,format:this.SERIALIZE_RULE,onChange:Prototype.emptyFunction,onUpdate:Prototype.emptyFunction},arguments[1]||{});this.destroy(element);var options_for_draggable={revert:true,quiet:options.quiet,scroll:options.scroll,scrollSpeed:options.scrollSpeed,scrollSensitivity:options.scrollSensitivity,delay:options.delay,ghosting:options.ghosting,constraint:options.constraint,handle:options.handle};if(options.starteffect)
options_for_draggable.starteffect=options.starteffect;if(options.reverteffect)
options_for_draggable.reverteffect=options.reverteffect;else
if(options.ghosting)options_for_draggable.reverteffect=function(element){element.style.top=0;element.style.left=0;};if(options.endeffect)
options_for_draggable.endeffect=options.endeffect;if(options.zindex)
options_for_draggable.zindex=options.zindex;var options_for_droppable={overlap:options.overlap,containment:options.containment,tree:options.tree,hoverclass:options.hoverclass,onHover:Sortable.onHover}
var options_for_tree={onHover:Sortable.onEmptyHover,overlap:options.overlap,containment:options.containment,hoverclass:options.hoverclass}
Element.cleanWhitespace(element);options.draggables=[];options.droppables=[];if(options.dropOnEmpty||options.tree){Droppables.add(element,options_for_tree);options.droppables.push(element);}
(this.findElements(element,options)||[]).each(function(e){var handle=options.handle?$(e).down('.'+options.handle,0):e;options.draggables.push(new Draggable(e,Object.extend(options_for_draggable,{handle:handle})));Droppables.add(e,options_for_droppable);if(options.tree)e.treeNode=element;options.droppables.push(e);});if(options.tree){(Sortable.findTreeElements(element,options)||[]).each(function(e){Droppables.add(e,options_for_tree);e.treeNode=element;options.droppables.push(e);});}
this.sortables[element.id]=options;Draggables.addObserver(new SortableObserver(element,options.onUpdate));},findElements:function(element,options){return Element.findChildren(element,options.only,options.tree?true:false,options.tag);},findTreeElements:function(element,options){return Element.findChildren(element,options.only,options.tree?true:false,options.treeTag);},onHover:function(element,dropon,overlap){if(Element.isParent(dropon,element))return;if(overlap>.33&&overlap<.66&&Sortable.options(dropon).tree){return;}else if(overlap>0.5){Sortable.mark(dropon,'before');if(dropon.previousSibling!=element){var oldParentNode=element.parentNode;element.style.visibility="hidden";dropon.parentNode.insertBefore(element,dropon);if(dropon.parentNode!=oldParentNode)
Sortable.options(oldParentNode).onChange(element);Sortable.options(dropon.parentNode).onChange(element);}}else{Sortable.mark(dropon,'after');var nextElement=dropon.nextSibling||null;if(nextElement!=element){var oldParentNode=element.parentNode;element.style.visibility="hidden";dropon.parentNode.insertBefore(element,nextElement);if(dropon.parentNode!=oldParentNode)
Sortable.options(oldParentNode).onChange(element);Sortable.options(dropon.parentNode).onChange(element);}}},onEmptyHover:function(element,dropon,overlap){var oldParentNode=element.parentNode;var droponOptions=Sortable.options(dropon);if(!Element.isParent(dropon,element)){var index;var children=Sortable.findElements(dropon,{tag:droponOptions.tag,only:droponOptions.only});var child=null;if(children){var offset=Element.offsetSize(dropon,droponOptions.overlap)*(1.0-overlap);for(index=0;index<children.length;index+=1){if(offset-Element.offsetSize(children[index],droponOptions.overlap)>=0){offset-=Element.offsetSize(children[index],droponOptions.overlap);}else if(offset-(Element.offsetSize(children[index],droponOptions.overlap)/2)>=0){child=index+1<children.length?children[index+1]:null;break;}else{child=children[index];break;}}}
dropon.insertBefore(element,child);Sortable.options(oldParentNode).onChange(element);droponOptions.onChange(element);}},unmark:function(){if(Sortable._marker)Sortable._marker.hide();},mark:function(dropon,position){var sortable=Sortable.options(dropon.parentNode);if(sortable&&!sortable.ghosting)return;if(!Sortable._marker){Sortable._marker=($('dropmarker')||Element.extend(document.createElement('DIV'))).hide().addClassName('dropmarker').setStyle({position:'absolute'});document.getElementsByTagName("body").item(0).appendChild(Sortable._marker);}
var offsets=Position.cumulativeOffset(dropon);Sortable._marker.setStyle({left:offsets[0]+'px',top:offsets[1]+'px'});if(position=='after')
if(sortable.overlap=='horizontal')
Sortable._marker.setStyle({left:(offsets[0]+dropon.clientWidth)+'px'});else
Sortable._marker.setStyle({top:(offsets[1]+dropon.clientHeight)+'px'});Sortable._marker.show();},_tree:function(element,options,parent){var children=Sortable.findElements(element,options)||[];for(var i=0;i<children.length;++i){var match=children[i].id.match(options.format);if(!match)continue;var child={id:encodeURIComponent(match?match[1]:null),element:element,parent:parent,children:[],position:parent.children.length,container:$(children[i]).down(options.treeTag)}
if(child.container)
this._tree(child.container,options,child)
parent.children.push(child);}
return parent;},tree:function(element){element=$(element);var sortableOptions=this.options(element);var options=Object.extend({tag:sortableOptions.tag,treeTag:sortableOptions.treeTag,only:sortableOptions.only,name:element.id,format:sortableOptions.format},arguments[1]||{});var root={id:null,parent:null,children:[],container:element,position:0}
return Sortable._tree(element,options,root);},_constructIndex:function(node){var index='';do{if(node.id)index='['+node.position+']'+index;}while((node=node.parent)!=null);return index;},sequence:function(element){element=$(element);var options=Object.extend(this.options(element),arguments[1]||{});return $(this.findElements(element,options)||[]).map(function(item){return item.id.match(options.format)?item.id.match(options.format)[1]:'';});},setSequence:function(element,new_sequence){element=$(element);var options=Object.extend(this.options(element),arguments[2]||{});var nodeMap={};this.findElements(element,options).each(function(n){if(n.id.match(options.format))
nodeMap[n.id.match(options.format)[1]]=[n,n.parentNode];n.parentNode.removeChild(n);});new_sequence.each(function(ident){var n=nodeMap[ident];if(n){n[1].appendChild(n[0]);delete nodeMap[ident];}});},serialize:function(element){element=$(element);var options=Object.extend(Sortable.options(element),arguments[1]||{});var name=encodeURIComponent((arguments[1]&&arguments[1].name)?arguments[1].name:element.id);if(options.tree){return Sortable.tree(element,arguments[1]).children.map(function(item){return[name+Sortable._constructIndex(item)+"[id]="+
encodeURIComponent(item.id)].concat(item.children.map(arguments.callee));}).flatten().join('&');}else{return Sortable.sequence(element,arguments[1]).map(function(item){return name+"[]="+encodeURIComponent(item);}).join('&');}}}
Element.isParent=function(child,element){if(!child.parentNode||child==element)return false;if(child.parentNode==element)return true;return Element.isParent(child.parentNode,element);}
Element.findChildren=function(element,only,recursive,tagName){if(!element.hasChildNodes())return null;tagName=tagName.toUpperCase();if(only)only=[only].flatten();var elements=[];$A(element.childNodes).each(function(e){if(e.tagName&&e.tagName.toUpperCase()==tagName&&(!only||(Element.classNames(e).detect(function(v){return only.include(v)}))))
elements.push(e);if(recursive){var grandchildren=Element.findChildren(e,only,recursive,tagName);if(grandchildren)elements.push(grandchildren);}});return(elements.length>0?elements.flatten():[]);}
Element.offsetSize=function(element,type){return element['offset'+((type=='vertical'||type=='height')?'Height':'Width')];}
if(!Control)var Control={};Control.Slider=Class.create();Control.Slider.prototype={initialize:function(handle,track,options){var slider=this;if(handle instanceof Array){this.handles=handle.collect(function(e){return $(e)});}else{this.handles=[$(handle)];}
this.track=$(track);this.options=options||{};this.axis=this.options.axis||'horizontal';this.increment=this.options.increment||1;this.step=parseInt(this.options.step||'1');this.range=this.options.range||$R(0,1);this.value=0;this.values=this.handles.map(function(){return 0});this.spans=this.options.spans?this.options.spans.map(function(s){return $(s)}):false;this.options.startSpan=$(this.options.startSpan||null);this.options.endSpan=$(this.options.endSpan||null);this.restricted=this.options.restricted||false;this.maximum=this.options.maximum||this.range.end;this.minimum=this.options.minimum||this.range.start;this.alignX=parseInt(this.options.alignX||'0');this.alignY=parseInt(this.options.alignY||'0');this.trackLength=this.maximumOffset()-this.minimumOffset();this.handleLength=this.isVertical()?(this.handles[0].offsetHeight!=0?this.handles[0].offsetHeight:this.handles[0].style.height.replace(/px$/,"")):(this.handles[0].offsetWidth!=0?this.handles[0].offsetWidth:this.handles[0].style.width.replace(/px$/,""));this.active=false;this.dragging=false;this.disabled=false;if(this.options.disabled)this.setDisabled();this.allowedValues=this.options.values?this.options.values.sortBy(Prototype.K):false;if(this.allowedValues){this.minimum=this.allowedValues.min();this.maximum=this.allowedValues.max();}
this.eventMouseDown=this.startDrag.bindAsEventListener(this);this.eventMouseUp=this.endDrag.bindAsEventListener(this);this.eventMouseMove=this.update.bindAsEventListener(this);this.handles.each(function(h,i){i=slider.handles.length-1-i;slider.setValue(parseFloat((slider.options.sliderValue instanceof Array?slider.options.sliderValue[i]:slider.options.sliderValue)||slider.range.start),i);Element.makePositioned(h);Event.observe(h,"mousedown",slider.eventMouseDown);});Event.observe(this.track,"mousedown",this.eventMouseDown);Event.observe(document,"mouseup",this.eventMouseUp);Event.observe(document,"mousemove",this.eventMouseMove);this.initialized=true;},dispose:function(){var slider=this;Event.stopObserving(this.track,"mousedown",this.eventMouseDown);Event.stopObserving(document,"mouseup",this.eventMouseUp);Event.stopObserving(document,"mousemove",this.eventMouseMove);this.handles.each(function(h){Event.stopObserving(h,"mousedown",slider.eventMouseDown);});},setDisabled:function(){this.disabled=true;},setEnabled:function(){this.disabled=false;},getNearestValue:function(value){if(this.allowedValues){if(value>=this.allowedValues.max())return(this.allowedValues.max());if(value<=this.allowedValues.min())return(this.allowedValues.min());var offset=Math.abs(this.allowedValues[0]-value);var newValue=this.allowedValues[0];this.allowedValues.each(function(v){var currentOffset=Math.abs(v-value);if(currentOffset<=offset){newValue=v;offset=currentOffset;}});return newValue;}
if(value>this.range.end)return this.range.end;if(value<this.range.start)return this.range.start;return value;},setValue:function(sliderValue,handleIdx){if(!this.active){this.activeHandleIdx=handleIdx||0;this.activeHandle=this.handles[this.activeHandleIdx];this.updateStyles();}
handleIdx=handleIdx||this.activeHandleIdx||0;if(this.initialized&&this.restricted){if((handleIdx>0)&&(sliderValue<this.values[handleIdx-1]))
sliderValue=this.values[handleIdx-1];if((handleIdx<(this.handles.length-1))&&(sliderValue>this.values[handleIdx+1]))
sliderValue=this.values[handleIdx+1];}
sliderValue=this.getNearestValue(sliderValue);this.values[handleIdx]=sliderValue;this.value=this.values[0];this.handles[handleIdx].style[this.isVertical()?'top':'left']=this.translateToPx(sliderValue);this.drawSpans();if(!this.dragging||!this.event)this.updateFinished();},setValueBy:function(delta,handleIdx){this.setValue(this.values[handleIdx||this.activeHandleIdx||0]+delta,handleIdx||this.activeHandleIdx||0);},translateToPx:function(value){return Math.round(((this.trackLength-this.handleLength)/(this.range.end-this.range.start))*(value-this.range.start))+"px";},translateToValue:function(offset){return((offset/(this.trackLength-this.handleLength)*(this.range.end-this.range.start))+this.range.start);},getRange:function(range){var v=this.values.sortBy(Prototype.K);range=range||0;return $R(v[range],v[range+1]);},minimumOffset:function(){return(this.isVertical()?this.alignY:this.alignX);},maximumOffset:function(){return(this.isVertical()?(this.track.offsetHeight!=0?this.track.offsetHeight:this.track.style.height.replace(/px$/,""))-this.alignY:(this.track.offsetWidth!=0?this.track.offsetWidth:this.track.style.width.replace(/px$/,""))-this.alignY);},isVertical:function(){return(this.axis=='vertical');},drawSpans:function(){var slider=this;if(this.spans)
$R(0,this.spans.length-1).each(function(r){slider.setSpan(slider.spans[r],slider.getRange(r))});if(this.options.startSpan)
this.setSpan(this.options.startSpan,$R(0,this.values.length>1?this.getRange(0).min():this.value));if(this.options.endSpan)
this.setSpan(this.options.endSpan,$R(this.values.length>1?this.getRange(this.spans.length-1).max():this.value,this.maximum));},setSpan:function(span,range){if(this.isVertical()){span.style.top=this.translateToPx(range.start);span.style.height=this.translateToPx(range.end-range.start+this.range.start);}else{span.style.left=this.translateToPx(range.start);span.style.width=this.translateToPx(range.end-range.start+this.range.start);}},updateStyles:function(){this.handles.each(function(h){Element.removeClassName(h,'selected')});Element.addClassName(this.activeHandle,'selected');},startDrag:function(event){if(Event.isLeftClick(event)){if(!this.disabled){this.active=true;var handle=Event.element(event);var pointer=[Event.pointerX(event),Event.pointerY(event)];var track=handle;if(track==this.track){var offsets=Position.cumulativeOffset(this.track);this.event=event;this.setValue(this.translateToValue((this.isVertical()?pointer[1]-offsets[1]:pointer[0]-offsets[0])-(this.handleLength/2)));var offsets=Position.cumulativeOffset(this.activeHandle);this.offsetX=(pointer[0]-offsets[0]);this.offsetY=(pointer[1]-offsets[1]);}else{while((this.handles.indexOf(handle)==-1)&&handle.parentNode)
handle=handle.parentNode;if(this.handles.indexOf(handle)!=-1){this.activeHandle=handle;this.activeHandleIdx=this.handles.indexOf(this.activeHandle);this.updateStyles();var offsets=Position.cumulativeOffset(this.activeHandle);this.offsetX=(pointer[0]-offsets[0]);this.offsetY=(pointer[1]-offsets[1]);}}}
Event.stop(event);}},update:function(event){if(this.active){if(!this.dragging)this.dragging=true;this.draw(event);if(Prototype.Browser.WebKit)window.scrollBy(0,0);Event.stop(event);}},draw:function(event){var pointer=[Event.pointerX(event),Event.pointerY(event)];var offsets=Position.cumulativeOffset(this.track);pointer[0]-=this.offsetX+offsets[0];pointer[1]-=this.offsetY+offsets[1];this.event=event;this.setValue(this.translateToValue(this.isVertical()?pointer[1]:pointer[0]));if(this.initialized&&this.options.onSlide)
this.options.onSlide(this.values.length>1?this.values:this.value,this);},endDrag:function(event){if(this.active&&this.dragging){this.finishDrag(event,true);Event.stop(event);}
this.active=false;this.dragging=false;},finishDrag:function(event,success){this.active=false;this.dragging=false;this.updateFinished();},updateFinished:function(){if(this.initialized&&this.options.onChange)
this.options.onChange(this.values.length>1?this.values:this.value,this);this.event=null;}}
Sound={tracks:{},_enabled:true,template:new Template('<embed style="height:0" id="sound_#{track}_#{id}" src="#{url}" loop="false" autostart="true" hidden="true"/>'),enable:function(){Sound._enabled=true;},disable:function(){Sound._enabled=false;},play:function(url){if(!Sound._enabled)return;var options=Object.extend({track:'global',url:url,replace:false},arguments[1]||{});if(options.replace&&this.tracks[options.track]){$R(0,this.tracks[options.track].id).each(function(id){var sound=$('sound_'+options.track+'_'+id);sound.Stop&&sound.Stop();sound.remove();})
this.tracks[options.track]=null;}
if(!this.tracks[options.track])
this.tracks[options.track]={id:0}
else
this.tracks[options.track].id++;options.id=this.tracks[options.track].id;if(Prototype.Browser.IE){var sound=document.createElement('bgsound');sound.setAttribute('id','sound_'+options.track+'_'+options.id);sound.setAttribute('src',options.url);sound.setAttribute('loop','1');sound.setAttribute('autostart','true');$$('body')[0].appendChild(sound);}
else
new Insertion.Bottom($$('body')[0],Sound.template.evaluate(options));}};if(Prototype.Browser.Gecko&&navigator.userAgent.indexOf("Win")>0){if(navigator.plugins&&$A(navigator.plugins).detect(function(p){return p.name.indexOf('QuickTime')!=-1}))
Sound.template=new Template('<object id="sound_#{track}_#{id}" width="0" height="0" type="audio/mpeg" data="#{url}"/>')
else
Sound.play=function(){}}

/*
* http://tetlaw.id.au/view/javascript/really-easy-field-validation
*/
var Validator = Class.create();

Validator.prototype = {
	initialize : function(className, error, test, options) {
		if(typeof test == 'function'){
			this.options = $H(options);
			this._test = test;
		} else {
			this.options = $H(test);
			this._test = function(){return true};
		}
		this.error = error || 'Validation failed.';
		this.className = className;
	},
	test : function(v, elm) {
		return (this._test(v,elm) && this.options.all(function(p){
			return Validator.methods[p.key] ? Validator.methods[p.key](v,elm,p.value) : true;
		}));
	}
}
Validator.methods = {
	pattern : function(v,elm,opt) {return Validation.get('IsEmpty').test(v) || opt.test(v)},
	minLength : function(v,elm,opt) {return v.length >= opt},
	maxLength : function(v,elm,opt) {return v.length <= opt},
	min : function(v,elm,opt) {return v >= parseFloat(opt)}, 
	max : function(v,elm,opt) {return v <= parseFloat(opt)},
	notOneOf : function(v,elm,opt) {return $A(opt).all(function(value) {
		return v != value;
	})},
	oneOf : function(v,elm,opt) {return $A(opt).any(function(value) {
		return v == value;
	})},
	is : function(v,elm,opt) {return v == opt},
	isNot : function(v,elm,opt) {return v != opt},
	equalToField : function(v,elm,opt) {return v == $F(opt)},
	notEqualToField : function(v,elm,opt) {return v != $F(opt)},
	include : function(v,elm,opt) {return $A(opt).all(function(value) {
		return Validation.get(value).test(v,elm);
	})}
}

var Validation = Class.create();

Validation.prototype = {
	initialize : function(form, options){
		this.options = Object.extend({
			onSubmit : true,
			stopOnFirst : false,
			immediate : false,
			focusOnError : true,
			useTitles : false,
			onFormValidate : function(result, form) {},
			onElementValidate : function(result, elm) {}
		}, options || {});
		this.form = $(form);
		if(this.options.onSubmit) Event.observe(this.form,'submit',this.onSubmit.bind(this),false);
		if(this.options.immediate) {
			var useTitles = this.options.useTitles;
			var callback = this.options.onElementValidate;
			Form.getElements(this.form).each(function(input) { // Thanks Mike!
				Event.observe(input, 'blur', function(ev) { Validation.validate(Event.element(ev),{useTitle : useTitles, onElementValidate : callback}); });
			});
		}
	},
	onSubmit :  function(ev){
		if(!this.validate()) Event.stop(ev);
	},
	validate : function() {
		var result = false;
		var useTitles = this.options.useTitles;
		var callback = this.options.onElementValidate;
		if(this.options.stopOnFirst) {
			result = Form.getElements(this.form).all(function(elm) { return Validation.validate(elm,{useTitle : useTitles, onElementValidate : callback}); });
		} else {
			result = Form.getElements(this.form).collect(function(elm) { return Validation.validate(elm,{useTitle : useTitles, onElementValidate : callback}); }).all();
		}
		if(!result && this.options.focusOnError) {
			Form.getElements(this.form).findAll(function(elm){return $(elm).hasClassName('validation-failed')}).first().focus()
		}
		this.options.onFormValidate(result, this.form);
		return result;
	},
	reset : function() {
		Form.getElements(this.form).each(Validation.reset);
	}
}

Object.extend(Validation, {
	validate : function(elm, options){
		options = Object.extend({
			useTitle : false,
			onElementValidate : function(result, elm) {}
		}, options || {});
		elm = $(elm);
		var cn = elm.classNames();
		return result = cn.all(function(value) {
			var test = Validation.test(value,elm,options.useTitle);
			options.onElementValidate(test, elm);
			return test;
		});
	},
	test : function(name, elm, useTitle) {
		var v = Validation.get(name);
		var prop = '__advice'+name.camelize();
		try {
		if(Validation.isVisible(elm) && !v.test($F(elm), elm)) {
			if(!elm[prop]) {
				var advice = Validation.getAdvice(name, elm);
				if(advice == null) {
					var errorMsg = useTitle ? ((elm && elm.title) ? elm.title : v.error) : v.error;
					advice = '<div class="validation-advice" id="advice-' + name + '-' + Validation.getElmID(elm) +'" style="display:none">' + errorMsg + '</div>'
					switch (elm.type.toLowerCase()) {
						case 'checkbox':
						case 'radio':
							var p = elm.parentNode;
							if(p) {
								new Insertion.Bottom(p, advice);
							} else {
								new Insertion.After(elm, advice);
							}
							break;
						default:
							new Insertion.After(elm, advice);
				    }
					advice = Validation.getAdvice(name, elm);
				}
				if(typeof Effect == 'undefined') {
					advice.style.display = 'block';
				} else {
					new Effect.Appear(advice, {duration : 1 });
				}
			}
			elm[prop] = true;
			elm.removeClassName('validation-passed');
			elm.addClassName('validation-failed');
			return false;
		} else {
			var advice = Validation.getAdvice(name, elm);
			if(advice != null) advice.hide();
			elm[prop] = '';
			elm.removeClassName('validation-failed');
			elm.addClassName('validation-passed');
			return true;
		}
		} catch(e) {
			throw(e)
		}
	},
	isVisible : function(elm) {
		while(elm.tagName != 'BODY') {
			if(!$(elm).visible()) return false;
			elm = elm.parentNode;
		}
		return true;
	},
	getAdvice : function(name, elm) {
		return $('advice-' + name + '-' + Validation.getElmID(elm)) || $('advice-' + Validation.getElmID(elm));
	},
	getElmID : function(elm) {
		return elm.id ? elm.id : elm.name;
	},
	reset : function(elm) {
		elm = $(elm);
		var cn = elm.classNames();
		cn.each(function(value) {
			var prop = '__advice'+value.camelize();
			if(elm[prop]) {
				var advice = Validation.getAdvice(value, elm);
				advice.hide();
				elm[prop] = '';
			}
			elm.removeClassName('validation-failed');
			elm.removeClassName('validation-passed');
		});
	},
	add : function(className, error, test, options) {
		var nv = {};
		nv[className] = new Validator(className, error, test, options);
		Object.extend(Validation.methods, nv);
	},
	addAllThese : function(validators) {
		var nv = {};
		$A(validators).each(function(value) {
				nv[value[0]] = new Validator(value[0], value[1], value[2], (value.length > 3 ? value[3] : {}));
			});
		Object.extend(Validation.methods, nv);
	},
	get : function(name) {
		return  Validation.methods[name] ? Validation.methods[name] : Validation.methods['_LikeNoIDIEverSaw_'];
	},
	methods : {
		'_LikeNoIDIEverSaw_' : new Validator('_LikeNoIDIEverSaw_','',{})
	}
});

Validation.add('IsEmpty', '', function(v) {
				return  ((v == null) || (v.length == 0)); // || /^\s+$/.test(v));
			});

Validation.addAllThese([
	['required', 'Dit is een verplicht veld.', function(v) {
				return !Validation.get('IsEmpty').test(v);
			}],
	['validate-number', 'Voeg een goed nummer in.', function(v) {
				return Validation.get('IsEmpty').test(v) || (!isNaN(v) && !/^\s+$/.test(v));
			}],
	['validate-digits', 'Gebruik alleen nummers. Gebruik geen punten of commas e.d.', function(v) {
				return Validation.get('IsEmpty').test(v) ||  !/[^\d -]/.test(v);
			}],
	['validate-alpha', 'Gebruik alleen letters (a-z) in.', function (v) {
				return Validation.get('IsEmpty').test(v) ||  /^[a-zA-Z\ -.]+$/.test(v)
			}],
	['validate-alphanum', 'Gebruik alleen letters (a-z) of cijfers (0-9). Geen spaties of andere tekens zijn mogelijk.', function(v) {
				return Validation.get('IsEmpty').test(v) ||  !/\W/.test(v)
			}],
	['validate-date', 'Voer een goede datum in.', function(v) {
				var test = new Date(v);
				return Validation.get('IsEmpty').test(v) || !isNaN(test);
			}],
	['validate-email', 'Voer een goed E-mail adres in.', function (v) {
				return Validation.get('IsEmpty').test(v) || /\w{1,}[@][\w\-]{1,}([.]([\w\-]{1,})){1,3}$/.test(v)
			}],
	['validate-url', 'Voer een goede url in.', function (v) {
				return Validation.get('IsEmpty').test(v) || /^(http|https|ftp):\/\/(([A-Z0-9][A-Z0-9_-]*)(\.[A-Z0-9][A-Z0-9_-]*)+)(:(\d+))?\/?/i.test(v)
			}],
	['validate-date-au', 'Gebruik dit datum formaat: dd/mm/yyyy.', function(v) {
				if(Validation.get('IsEmpty').test(v)) return true;
				var regex = /^(\d{2})\/(\d{2})\/(\d{4})$/;
				if(!regex.test(v)) return false;
				var d = new Date(v.replace(regex, '$2/$1/$3'));
				return ( parseInt(RegExp.$2, 10) == (1+d.getMonth()) ) && 
							(parseInt(RegExp.$1, 10) == d.getDate()) && 
							(parseInt(RegExp.$3, 10) == d.getFullYear() );
			}],
	['validate-currency-dollar', 'Please enter a valid $ amount. For example $100.00 .', function(v) {
				// [$]1[##][,###]+[.##]
				// [$]1###+[.##]
				// [$]0.##
				// [$].##
				return Validation.get('IsEmpty').test(v) ||  /^\$?\-?([1-9]{1}[0-9]{0,2}(\,[0-9]{3})*(\.[0-9]{0,2})?|[1-9]{1}\d*(\.[0-9]{0,2})?|0(\.[0-9]{0,2})?|(\.[0-9]{1,2})?)$/.test(v)
			}],
	['validate-selection', 'Maak een keuze', function(v,elm){
				return elm.options ? elm.selectedIndex > 0 : !Validation.get('IsEmpty').test(v);
			}],
	['validate-one-required', 'Kies een van de bovenstaande opties.', function (v,elm) {
				var p = elm.parentNode;
				var options = p.getElementsByTagName('INPUT');
				return $A(options).any(function(elm) {
					return $F(elm);
				});
			}]
]);

if(typeof(AC)=="undefined"){AC={};}
AC.ProductBrowser={
	productSlider:null,
	sliderVal:0,
	animationId:false,
	viewportWidth:946,
	contentWidth:946,
	categories:[
		{id:'pb-cat1',offset:0},
		{id:'pb-cat2',offset:0.32}
	],
		
	arrowScrollAmount:0.24,
	isSliding:false,
	lastX:0.32,
	isMouseDown:false,
	dif:0,
	overlap:0,
	offsetImageWidth:127,
	sliderOffset:291,
	offsetContentWidth:-946,
	clicked:false,
	startIndex:0,
	isIpScroll:false,
	hasIpDragged:false,
	init:function(setupArgs){
		if(typeof(setupArgs.categories)!='undefined')this.categories=setupArgs.categories;
		if(typeof(setupArgs.imageOverlap)!='undefined')this.overlap=setupArgs.imageOverlap;
		if(typeof(setupArgs.sliderCentering)!='undefined')this.sliderOffset=setupArgs.sliderCentering;
		if(typeof(setupArgs.initialCategory)!='undefined')this.startIndex=setupArgs.initialCategory;
		if(typeof(setupArgs.arrowScrollAmount)!='undefined')this.arrowScrollAmount=setupArgs.arrowScrollAmount;
		if(typeof(setupArgs.iPhoneCategories)!='undefined'){this.iPhoneCategories=setupArgs.iPhoneCategories;
	}
	
if(typeof(setupArgs.iPhoneScrollAmount)!='undefined')this.iPhoneScrollAmount=setupArgs.iPhoneScrollAmount;
if(typeof(setupArgs.iPhoneContainerWidth)!='undefined')this.iPhoneContainerWidth=setupArgs.iPhoneContainerWidth;

$('pb-productslidertrack').style.visibility="visible";
$('pb-productbrowsercontainer').style.overflow="hidden";

this.viewportWidth=$('pb-productbrowsercontainer').getWidth();
this.offsetImageWidth=$$('#pb-productslider .pb-productimage')[0].getWidth()-this.overlap;
this.contentWidth=this.offsetImageWidth*$$('#pb-productslider .pb-productimage').length;
this.offsetContentWidth=-1*(this.contentWidth-this.viewportWidth);
this.productSlider=new Control.Slider('pb-productsliderhandle','pb-productslidertrack',{ axis:'horizontal' });
		

AC.ProductBrowser.animateSlide(this.categories[this.startIndex].offset);

this.productSlider.options.onChange=function(value)
{
	$('pb-productsliderhandleimage').style.left=$('pb-productsliderhandle').style.left;

	if(AC.ProductBrowser.isThrow&&!AC.ProductBrowser.isSliding)
	{
		AC.ProductBrowser.isSliding=true;
		AC.ProductBrowser.isThrow=false;
		
		var mod=value+AC.ProductBrowser.throwMod;
		if(mod<0)mod=0;
		if(mod>1)mod=1;
		AC.ProductBrowser.animateSlide(mod);
	}
	else if(!AC.ProductBrowser.isSliding&&value)
	{
		AC.ProductBrowser.isSliding=true;
		AC.ProductBrowser.animateSlide(value);
	}
};


this.productSlider.options.onSlide=function(value)
{
	$('pb-productsliderhandleimage').style.left=$('pb-productsliderhandle').style.left;
	
	if(value&&!AC.ProductBrowser.isSliding)
	{
		AC.ProductBrowser.isSliding=true;
		AC.ProductBrowser.isThrow=false;
		
		if(AC.ProductBrowser.isMouseDown)
		{
			AC.ProductBrowser.dif=value-AC.ProductBrowser.lastX;
			AC.ProductBrowser.lastX=value;
				
			if(AC.ProductBrowser.dif>0.05) {
				AC.ProductBrowser.isThrow=true;
				AC.ProductBrowser.throwMod=0.2;
			}
			else if(AC.ProductBrowser.dif<-0.04)
			{
				AC.ProductBrowser.isThrow=true;
				AC.ProductBrowser.throwMod=-0.2;
			}
		}
	
		var w=AC.ProductBrowser.offsetContentWidth;
		$('pb-productslider').style.left=w*value+"px";

		this.sliderVal=value;
		AC.ProductBrowser.lastX=value;
		AC.ProductBrowser.colorCats();
		AC.ProductBrowser.isSliding=false;
	}
	Element.setStyle($('pb-productbrowsercontainer'),{overflow:"hidden"});
};

Event.observe('pb-productslidertrack','mousedown',function(e) { var o=e.offsetX||e.layerX; if(Event.element(e).id=='pb-productslidertrack'&&o<100)AC.ProductBrowser.animateSlide(0);});

Event.observe('pb-leftarrow','mousedown',function(){ AC.ProductBrowser.left(); });

Event.observe('pb-iphone-leftarrow','mousedown',function(){ AC.ProductBrowser.left(); });

Event.observe('pb-rightarrow','mousedown',function(){ AC.ProductBrowser.right(); });

Event.observe('pb-iphone-rightarrow','mousedown',function(){ AC.ProductBrowser.right(); });

Event.observe('pb-productsliderhandle','mousedown',function(){ AC.ProductBrowser.isMouseDown=true; $('pb-productsliderhandle').style.zIndex="5"; });

Event.observe('pb-productsliderhandle','mouseup',function(){ AC.ProductBrowser.isMouseDown=false; });

AC.ProductBrowser.categories.each(function(c)
{
	Event.observe($(c.id),'mouseup',function(e)
	{
		AC.ProductBrowser.animateSlide(c.offset);
	});
});
},
animateSlide:function(toX)
{
	
	if(toX>1)toX=1;
	if(toX<0)toX=0;
	AC.ProductBrowser.sliderVal=toX;
	window.clearInterval(AC.ProductBrowser.animationId);
	var w=AC.ProductBrowser.offsetContentWidth;
	var stopPoint=w*toX;

	var sliderStopPoint=(Math.round(AC.ProductBrowser.viewportWidth-AC.ProductBrowser.sliderOffset)*toX) ;


	AC.ProductBrowser.isSliding=true;
	AC.ProductBrowser.animationId=window.setInterval(function()
	{
		
		var sliderPos=parseInt($('pb-productslider').getStyle('left'))||0;
		var handlePos=parseInt($('pb-productsliderhandle').getStyle('left'))||0;
		var x=AC.ProductBrowser.calculateDecel(sliderPos,stopPoint);
		var sx=AC.ProductBrowser.calculateDecel(handlePos,sliderStopPoint);

		$('pb-productslider').style.left=x+"px";
		$('pb-productsliderhandle').style.left=sx+"px";
		$('pb-productsliderhandleimage').style.left=sx+"px";
		AC.ProductBrowser.colorCats();

		if(x==stopPoint){
			window.clearInterval(AC.ProductBrowser.animationId);
			AC.ProductBrowser.isSliding=false;
		}
	},50);
},

colorCats:function()
{
	var sliderX=parseInt($('pb-productsliderhandle').getStyle('left'))+(($('pb-productsliderhandle').getWidth()-20)/2);
	AC.ProductBrowser.categories.each(function(c)
	{
		var left=parseInt($(c.id).getStyle('left'))
		var clr=Math.ceil((Math.min(sliderX,left)/Math.max(sliderX,left))*10);
		$(c.id).className='pb-catclass'+clr;
	});
},

left:function()
{
	AC.ProductBrowser.animateSlide(AC.ProductBrowser.sliderVal-AC.ProductBrowser.arrowScrollAmount);
},

right:function(){
	AC.ProductBrowser.animateSlide(AC.ProductBrowser.sliderVal+AC.ProductBrowser.arrowScrollAmount);
},

calculateDecel:function(from,to)
{
	var n=from-Math.floor((from-to)*.1);
	if(Math.abs(from-to)<4)return to;
	else return n;
}
};