/*  Prototype JavaScript framework, version 1.5.0
 *  (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://prototype.conio.net/
 *
/*--------------------------------------------------------------------------*/

var Prototype = {
  Version: '1.5.0',
  BrowserFeatures: {
    XPath: !!document.evaluate
 },

  ScriptFragment: '(?:<script.*?>)((\n|\r|.)*?)(?:<\/script>)',
  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) {
     _proxy_jslib_assign('', destination, (property), '=', (  _proxy_jslib_handle(source, (property), 0, 0)));
  }
  return destination;
}

Object.extend(Object, {
  inspect: function(object) {
    try {
      if (object === undefined) return 'undefined';
      if (object === null) return 'null';
      return object.inspect ? object.inspect() :  _proxy_jslib_handle(object, 'toString', '', 1, 0)();
    } catch (e) {
      if (e instanceof RangeError) return '...';
      throw e;
    }
  },

  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( _proxy_jslib_handle(object, (property), 0, 0));
    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 = $A(arguments), object = args.shift();
  return function(event) {
    return __method.apply(object, [( event || window.event)].concat(args).concat($A(arguments)));
  }
}

Object.extend(Number.prototype, {
  toColorPart: function() {
    var digits =  _proxy_jslib_handle(this, 'toString', '', 1, 0)(16);
    if (this < 16) return '0' + digits;
    return digits;
  },

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

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

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

    for (var i = 0, length = arguments.length; i < length; i++) {
      var lambda =  _proxy_jslib_handle(arguments, (i), 0, 0);
      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 =  _proxy_jslib_handle(null, 'setInterval', setInterval, 1, 0)(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;
      }
    }
  }
}
String.interpret = function(value) {
  return  _proxy_jslib_handle(null, 'value', value, 0, 0) == null ? '' : String( _proxy_jslib_handle(null, 'value', value, 0, 0));
}

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= _proxy_jslib_assign_rval('--', 'count', '', '', 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  _proxy_jslib_handle( _proxy_jslib_handle(this, 'replace', '', 1, 0)(/^\s+/, ''), 'replace', '', 1, 0)(/\s+$/, '');
  },

  stripTags: function() {
    return  _proxy_jslib_handle(this, 'replace', '', 1, 0)(/<\/?[^>]+>/gi, '');
  },

  stripScripts: function() {
    return  _proxy_jslib_handle(this, 'replace', '', 1, 0)(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(_proxy_jslib_proxify_js((script), 0, 0) ) });
  },

  escapeHTML: function() {
    var div = document.createElement('div');
    var text = document.createTextNode(this);
    div.appendChild(text);
    return  _proxy_jslib_handle(div, 'innerHTML', '', 0, 0);
  },

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

  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 name = decodeURIComponent(pair[0]);
        var value = pair[1] ? decodeURIComponent(pair[1]) : undefined;

        if ( _proxy_jslib_handle(hash, (name), 0, 0) !== undefined) {
          if ( _proxy_jslib_handle(hash, (name), 0, 0).constructor != Array)
             _proxy_jslib_assign('', hash, (name), '=', ( [ _proxy_jslib_handle(hash, (name), 0, 0)]));
          if ( _proxy_jslib_handle(null, 'value', value, 0, 0))  _proxy_jslib_handle(hash, (name), 0, 0).push( _proxy_jslib_handle(null, 'value', value, 0, 0));
        }
        else  _proxy_jslib_assign('', hash, (name), '=', (  _proxy_jslib_handle(null, 'value', value, 0, 0)));
      }
      return hash;
    });
  },

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

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

  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 +=  _proxy_jslib_handle(parts, (i), 0, 0).charAt(0).toUpperCase() +  _proxy_jslib_handle(parts, (i), 0, 0).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 =  _proxy_jslib_handle(this, 'replace', '', 1, 0)(/\\/g, '\\\\');
    if (useDoubleQuotes)
      return '"' +  _proxy_jslib_handle(escapedString, 'replace', '', 1, 0)(/"/g, '\\"') + '"';
    else
      return "'" +  _proxy_jslib_handle(escapedString, 'replace', '', 1, 0)(/'/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;

var Template = Class.create();
Template.Pattern = /(^|.|\r|\n)(#\{(.*?)\})/;
Template.prototype = {
  initialize: function(template, pattern) {
    this.template =  _proxy_jslib_handle(template, 'toString', '', 1, 0)();
    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( _proxy_jslib_handle(object, (match[3]), 0, 0));
    });
  }
}

var $break    = new (Object)();
var $continue = new (Object)();

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

  any: function(iterator) {
    var result = false;
    this.each(function(value, index) {
      if (result = !!(iterator || Prototype.K)( _proxy_jslib_handle(null, 'value', value, 0, 0), index))
        throw $break;
    });
    return result;
  },

  collect: function(iterator) {
    var results = [];
    this.each(function(value, index) {
      results.push((iterator || Prototype.K)( _proxy_jslib_handle(null, 'value', value, 0, 0), index));
    });
    return results;
  },

  detect: function(iterator) {
    var result;
    this.each(function(value, index) {
      if (iterator( _proxy_jslib_handle(null, 'value', value, 0, 0), index)) {
        result =  _proxy_jslib_handle(null, 'value', value, 0, 0);
        throw $break;
      }
    });
    return result;
  },

  findAll: function(iterator) {
    var results = [];
    this.each(function(value, index) {
      if (iterator( _proxy_jslib_handle(null, 'value', value, 0, 0), index))
        results.push( _proxy_jslib_handle(null, 'value', value, 0, 0));
    });
    return results;
  },

  grep: function(pattern, iterator) {
    var results = [];
    this.each(function(value, index) {
      var stringValue =  _proxy_jslib_handle( _proxy_jslib_handle(null, 'value', value, 0, 0), 'toString', '', 1, 0)();
      if (stringValue.match(pattern))
        results.push((iterator || Prototype.K)( _proxy_jslib_handle(null, 'value', value, 0, 0), index));
    })
 return results;
  },

  include: function(object) {
    var found = false;
    this.each(function(value) {
      if ( _proxy_jslib_handle(null, 'value', value, 0, 0) == 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,  _proxy_jslib_handle(null, 'value', value, 0, 0), index);
    });
    return memo;
  },

  invoke: function(method) {
    var args = $A(arguments).slice(1);
    return this.map(function(value) {
      return  _proxy_jslib_handle( _proxy_jslib_handle(null, 'value', value, 0, 0), (method), 0, 0).apply( _proxy_jslib_handle(null, 'value', value, 0, 0), args);
    });
  },

  max: function(iterator) {
    var result;
    this.each(function(value, index) {
       value= _proxy_jslib_assign_rval('', 'value', '=', ( (iterator || Prototype.K)( _proxy_jslib_handle(null, 'value', value, 0, 0), index)), value);
      if (result == undefined ||  _proxy_jslib_handle(null, 'value', value, 0, 0) >= result)
        result =  _proxy_jslib_handle(null, 'value', value, 0, 0);
    });
    return result;
  },

  min: function(iterator) {
    var result;
    this.each(function(value, index) {
       value= _proxy_jslib_assign_rval('', 'value', '=', ( (iterator || Prototype.K)( _proxy_jslib_handle(null, 'value', value, 0, 0), index)), value);
      if (result == undefined ||  _proxy_jslib_handle(null, 'value', value, 0, 0) < result)
        result =  _proxy_jslib_handle(null, 'value', value, 0, 0);
    });
    return result;
  },

  partition: function(iterator) {
    var trues = [], falses = [];
    this.each(function(value, index) {
      ((iterator || Prototype.K)( _proxy_jslib_handle(null, 'value', value, 0, 0), index) ?
        trues : falses).push( _proxy_jslib_handle(null, 'value', value, 0, 0));
    });
    return [trues, falses];
  },

  pluck: function(property) {
    var results = [];
    this.each(function(value, index) {
      results.push( _proxy_jslib_handle( _proxy_jslib_handle(null, 'value', value, 0, 0), (property), 0, 0));
    });
    return results;
  },

  reject: function(iterator) {
    var results = [];
    this.each(function(value, index) {
      if (!iterator( _proxy_jslib_handle(null, 'value', value, 0, 0), index))
        results.push( _proxy_jslib_handle(null, 'value', value, 0, 0));
    });
    return results;
  },

  sortBy: function(iterator) {
    return this.map(function(value, index) {
      return {value:  _proxy_jslib_handle(null, 'value', value, 0, 0), criteria: iterator( _proxy_jslib_handle(null, 'value', value, 0, 0), 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( _proxy_jslib_handle(iterable, (i), 0, 0));
    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( _proxy_jslib_handle(this, (i), 0, 0));
  },

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

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

  last: function() {
    return  _proxy_jslib_handle(this, (this.length - 1), 0, 0);
  },

  compact: function() {
    return this.select(function(value) {
      return  _proxy_jslib_handle(null, 'value', value, 0, 0) != null;
    });
  },

  flatten: function() {
    return this.inject([], function(array, value) {
      return array.concat( _proxy_jslib_handle(null, 'value', value, 0, 0) &&  _proxy_jslib_handle(null, 'value', value, 0, 0).constructor == Array ?
         _proxy_jslib_handle(null, 'value', value, 0, 0).flatten() : [ _proxy_jslib_handle(null, 'value', value, 0, 0)]);
    });
  },

  without: function() {
    var values = $A(arguments);
    return this.select(function(value) {
      return !values.include( _proxy_jslib_handle(null, 'value', value, 0, 0));
    });
  },

  indexOf: function(object) {
    for (var i = 0, length = this.length; i < length; i++)
      if ( _proxy_jslib_handle(this, (i), 0, 0) == 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() {
    return this.inject([], function(array, value) {
      return array.include( _proxy_jslib_handle(null, 'value', value, 0, 0)) ? array : array.concat([ _proxy_jslib_handle(null, 'value', value, 0, 0)]);
    });
  },

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

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

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

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

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

if(window.opera){
  Array.prototype.concat = function() {
    var array = [];
    for(var i = 0, length = this.length; i < length; i++) array.push( _proxy_jslib_handle(this, (i), 0, 0));
    for(var i = 0, length = arguments.length; i < length; i++) {
      if( _proxy_jslib_handle(arguments, (i), 0, 0).constructor == Array) {
        for(var j = 0, arrayLength =  _proxy_jslib_handle(arguments, (i), 0, 0).length; j < arrayLength; j++)
          array.push( _proxy_jslib_handle( _proxy_jslib_handle(arguments, (i), 0, 0), (j), 0, 0));
      } else {
        array.push( _proxy_jslib_handle(arguments, (i), 0, 0));
      }
    }
    return array;
  }
}
var Hash = function(obj) {
  Object.extend(this, obj || {});
};

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

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

      if ( _proxy_jslib_handle(pair, 'value', '', 0, 0) &&  _proxy_jslib_handle(pair, 'value', '', 0, 0).constructor == Array) {
        var values =  _proxy_jslib_handle(pair, 'value', '', 0, 0).compact();
        if (values.length < 2)  _proxy_jslib_assign('', pair, 'value', '=', ( values.reduce()));
        else {
        	key = encodeURIComponent(pair.key);
          values.each(function(value) {
             value= _proxy_jslib_assign_rval('', 'value', '=', (  _proxy_jslib_handle(null, 'value', value, 0, 0) != undefined ? encodeURIComponent( _proxy_jslib_handle(null, 'value', value, 0, 0)) : ''), value);
            parts.push(key + '=' + encodeURIComponent( _proxy_jslib_handle(null, 'value', value, 0, 0)));
          });
          return;
        }
      }
      if ( _proxy_jslib_handle(pair, 'value', '', 0, 0) == undefined) pair[1] = '';
      parts.push(pair.map(encodeURIComponent).join('='));
	  });

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

Object.extend(Hash.prototype, Enumerable);
Object.extend(Hash.prototype, {
  _each: function(iterator) {
    for (var key in this) {
      var value =  _proxy_jslib_handle(this, (key), 0, 0);
      if ( _proxy_jslib_handle(null, 'value', value, 0, 0) &&  _proxy_jslib_handle(null, 'value', value, 0, 0) ==  _proxy_jslib_handle(Hash.prototype, (key), 0, 0)) continue;

      var pair = [key,  _proxy_jslib_handle(null, 'value', value, 0, 0)];
      pair.key = key;
       _proxy_jslib_assign('', pair, 'value', '=', (  _proxy_jslib_handle(null, 'value', value, 0, 0)));
      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) {
       _proxy_jslib_assign('', mergedHash, (pair.key), '=', (  _proxy_jslib_handle(pair, 'value', '', 0, 0)));
      return mergedHash;
    });
  },

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

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

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

function $H(object) {
  if (object && object.constructor == Hash) return object;
  return new (Hash)(object);
};
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( _proxy_jslib_handle(null, 'value', value, 0, 0))) {
      iterator( _proxy_jslib_handle(null, 'value', value, 0, 0));
       value= _proxy_jslib_assign_rval('', 'value', '=', (  _proxy_jslib_handle(null, 'value', value, 0, 0).succ()), value);
    }
  },

  include: function(value) {
    if ( _proxy_jslib_handle(null, 'value', value, 0, 0) < this.start)
      return false;
    if (this.exclusive)
      return  _proxy_jslib_handle(null, 'value', value, 0, 0) < this.end;
    return  _proxy_jslib_handle(null, 'value', value, 0, 0) <= 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  _proxy_jslib_handle(responder, (callback), 0, 0) == 'function') {
        try {
           _proxy_jslib_handle(responder, (callback), 0, 0).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 = this.options.parameters;

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

    params = Hash.toQueryString(params);
    if (params && /Konqueror|Safari|KHTML/.test(navigator.userAgent)) params += '&_='

  
 if (this.method == 'get' && params)
      this.url += (this.url.indexOf('?') > -1 ? '&' : '?') + params;

    try {
      Ajax.Responders.dispatch('onCreate', this, this.transport);

       _proxy_jslib_handle(this.transport, 'open', '', 1, 0)(this.method.toUpperCase(), this.url,
        this.options.asynchronous);

      if (this.options.asynchronous)
         _proxy_jslib_handle(null, 'setTimeout', setTimeout, 1, 0)(function() { this.respondToReadyState(1) }.bind(this), 10);

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

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

      this.transport.send( _proxy_jslib_handle(null, 'body', body, 0, 0));

      /* 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') {
       _proxy_jslib_assign('', 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)
             _proxy_jslib_assign('', 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)
           _proxy_jslib_assign('', headers, ( _proxy_jslib_handle(extras, (i), 0, 0)), '=', (  _proxy_jslib_handle(extras, (i+1), 0, 0)));
      else
        $H(extras).each(function(pair) {  _proxy_jslib_assign('', headers, (pair.key), '=', (  _proxy_jslib_handle(pair, 'value', '', 0, 0) ))});
    }

    for (var name in headers)
      this.transport.setRequestHeader(name,  _proxy_jslib_handle(headers, (name), 0, 0));
  },

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

  respondToReadyState: function(readyState) {
    var state =  _proxy_jslib_handle(Ajax.Request.Events, (readyState), 0, 0);
    var transport = this.transport, json = this.evalJSON();

    if (state == 'Complete') {
      try {
        this._complete = true;
        ( _proxy_jslib_handle(this.options, ('on' + this.transport.status), 0, 0)
 ||  _proxy_jslib_handle(this.options, ('on' + (this.success() ? 'Success' : 'Failure')), 0, 0)
 || Prototype.emptyFunction)(transport, json);
      } catch (e) {
        this.dispatchException(e);
      }

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

    try {
      ( _proxy_jslib_handle(this.options, ('on' + state), 0, 0) || 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 ? eval(_proxy_jslib_proxify_js(('(' + json + ')'), 0, 0) ) : null;
    } catch (e) { return null }
  },

  evalResponse: function() {
    try {
      return eval(_proxy_jslib_proxify_js((this.transport.responseText), 0, 0) );
    } 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 =  _proxy_jslib_handle(this.container, (this.success() ? 'success' : 'failure'), 0, 0);
    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)
         _proxy_jslib_handle(null, 'setTimeout', setTimeout, 1, 0)(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 =  _proxy_jslib_handle(null, 'setTimeout', setTimeout, 1, 0)(this.onTimerEvent.bind(this),
      this.decay * this.frequency * 1000);
  },

  onTimerEvent: function() {
    this.updater = new (Ajax.Updater)(this.container, this.url, this.options);
  }
});
function $(element) {
  if (arguments.length > 1) {
    for (var i = 0, elements = [], length = arguments.length; i < length; i++)
      elements.push($( _proxy_jslib_handle(arguments, (i), 0, 0)));
    return elements;
  }
  if (typeof element == 'string')
    element =  _proxy_jslib_handle(document, 'getElementById', '', 1, 0)(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) {
  if (Prototype.BrowserFeatures.XPath) {
    var q = ".//*[contains(concat(' ', @class, ' '), ' " + className + " ')]";
    return document._getElementsByXPath(q, parentElement);
  } else {
    var children =  _proxy_jslib_handle(($(parentElement) ||  _proxy_jslib_handle(document, 'body', '', 0, 0)), 'getElementsByTagName', '', 1, 0)('*');
    var elements = [], child;
    for (var i = 0, length = children.length; i < length; i++) {
      child =  _proxy_jslib_handle(children, (i), 0, 0);
      if (Element.hasClassName(child, className))
        elements.push(Element.extend(child));
    }
    return elements;
  }
};

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

if (!window.Element)
  var Element = new (Object)();

Element.extend = function(element) {
  if (!element || _nativeExtensions || element.nodeType == 3) return element;

  if (!element._extended && element.tagName && element != window) {
    var methods = Object.clone(Element.Methods), cache = Element.extend.cache;

    if (element.tagName == 'FORM')
      Object.extend(methods, Form.Methods);
    if (['INPUT', 'TEXTAREA', 'SELECT'].include(element.tagName))
      Object.extend(methods, Form.Element.Methods);

    Object.extend(methods, Element.Methods.Simulated);

    for (var property in methods) {
      var value =  _proxy_jslib_handle(methods, (property), 0, 0);
      if (typeof  _proxy_jslib_handle(null, 'value', value, 0, 0) == 'function' && !(property in element))
         _proxy_jslib_assign('', element, (property), '=', ( cache.findOrStore( _proxy_jslib_handle(null, 'value', value, 0, 0))));
    }
  }

  element._extended = true;
  return element;
};

Element.extend.cache = {
  findOrStore: function(value) {
    return  _proxy_jslib_assign('', this, ( _proxy_jslib_handle(null, 'value', value, 0, 0)), '=', (  _proxy_jslib_handle(this, ( _proxy_jslib_handle(null, 'value', value, 0, 0)), 0, 0) || function() {
      return  _proxy_jslib_handle(null, 'value', value, 0, 0).apply(null, [this].concat($A(arguments)));
    }))
 }
};

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

  toggle: function(element) {
    element = $(element);
     _proxy_jslib_handle(Element, (Element.visible(element) ? 'hide' : 'show'), 1, 0)(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' ? '' :  _proxy_jslib_handle(html, 'toString', '', 1, 0)();
     _proxy_jslib_assign('', $(element), 'innerHTML', '=', ( html.stripScripts()));
     _proxy_jslib_handle(null, 'setTimeout', setTimeout, 1, 0)(function() {html.evalScripts()}, 10);
    return element;
  },

  replace: function(element, html) {
    element = $(element);
    html = typeof html == 'undefined' ? '' :  _proxy_jslib_handle(html, 'toString', '', 1, 0)();
    if ( _proxy_jslib_handle(element, 'outerHTML', '', 0, 0)) {
       _proxy_jslib_assign('', element, 'outerHTML', '=', ( html.stripScripts()));
    } else {
      var range = element.ownerDocument.createRange();
      range.selectNodeContents(element);
      element.parentNode.replaceChild(
        range.createContextualFragment(html.stripScripts()), element);
    }
     _proxy_jslib_handle(null, 'setTimeout', setTimeout, 1, 0)(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 =  _proxy_jslib_handle(( _proxy_jslib_handle(element, (property), 0, 0) || ''), 'toString', '', 1, 0)();
      if ( _proxy_jslib_handle(null, 'value', value, 0, 0)) result += ' ' + attribute + '=' +  _proxy_jslib_handle(null, 'value', value, 0, 0).inspect(true);
    });
    return result + '>';
  },

  recursivelyCollect: function(element, property) {
    element = $(element);
    var elements = [];
    while (element =  _proxy_jslib_handle(element, (property), 0, 0))
      if (element.nodeType == 1)
        elements.push(Element.extend(element));
    return elements;
  },

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

  descendants: function(element) {
    return $A( _proxy_jslib_handle($(element), 'getElementsByTagName', '', 1, 0)('*'));
  },

  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) {
    return Selector.findElement($(element).ancestors(), expression, index);
  },

  down: function(element, expression, index) {
    return Selector.findElement($(element).descendants(), expression, index);
  },

  previous: function(element, expression, index) {
    return Selector.findElement($(element).previousSiblings(), expression, index);
  },

  next: function(element, expression, index) {
    return Selector.findElement($(element).nextSiblings(), expression, index);
  },

  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 (document.all && !window.opera) {
      var t = Element._attributeTranslations;
      if ( _proxy_jslib_handle(t.values, (name), 0, 0)) return  _proxy_jslib_handle(t.values, (name), 1, 0)(element, name);
      if ( _proxy_jslib_handle(t.names, (name), 0, 0))  name =  _proxy_jslib_handle(t.names, (name), 0, 0);
      var attribute =  _proxy_jslib_handle(element.attributes, (name), 0, 0);
      if(attribute) return  _proxy_jslib_handle(attribute, 'nodeValue', '', 0, 0);
    }
    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;
     _proxy_jslib_handle(Element.classNames(element), (element.hasClassName(className) ? 'remove' : 'add'), 1, 0)(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( _proxy_jslib_handle(node, 'nodeValue', '', 0, 0)))
        element.removeChild(node);
      node = nextNode;
    }
    return element;
  },

  empty: function(element) {
    return  _proxy_jslib_handle($(element), 'innerHTML', '', 0, 0).match(/^\s*$/);
  },

  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);
    if (['float','cssFloat'].include(style))
      style = (typeof element.style.styleFloat != 'undefined' ? 'styleFloat' : 'cssFloat');
    style = style.camelize();
    var value =  _proxy_jslib_handle(element.style, (style), 0, 0);
    if (! _proxy_jslib_handle(null, 'value', value, 0, 0)) {
      if (document.defaultView && document.defaultView.getComputedStyle) {
        var css = document.defaultView.getComputedStyle(element, null);
         value= _proxy_jslib_assign_rval('', 'value', '=', ( css ?  _proxy_jslib_handle(css, (style), 0, 0) : null), value);
      } else if (element.currentStyle) {
         value= _proxy_jslib_assign_rval('', 'value', '=', (  _proxy_jslib_handle(element.currentStyle, (style), 0, 0)), value);
      }
    }

    if(( _proxy_jslib_handle(null, 'value', value, 0, 0) == 'auto') && ['width','height'].include(style) && (element.getStyle('display') != 'none'))
       value= _proxy_jslib_assign_rval('', 'value', '=', (  _proxy_jslib_handle(element, ('offset'+style.capitalize()), 0, 0) + 'px'), value);

    if (window.opera && ['left', 'top', 'right', 'bottom'].include(style))
      if (Element.getStyle(element, 'position') == 'static')  value= _proxy_jslib_assign_rval('', 'value', '=', ( 'auto'), value);
    if(style == 'opacity') {
      if( _proxy_jslib_handle(null, 'value', value, 0, 0)) return parseFloat( _proxy_jslib_handle(null, 'value', value, 0, 0));
      if( value= _proxy_jslib_assign_rval('', 'value', '=', ( (element.getStyle('filter') || '').match(/alpha\(opacity=(.*)\)/)), value))
        if( _proxy_jslib_handle(null, 'value', value, 0, 0)[1]) return parseFloat( _proxy_jslib_handle(null, 'value', value, 0, 0)[1]) / 100;
      return 1.0;
    }
    return  _proxy_jslib_handle(null, 'value', value, 0, 0) == 'auto' ? null :  _proxy_jslib_handle(null, 'value', value, 0, 0);
  },

  setStyle: function(element, style) {
    element = $(element);
    for (var name in style) {
      var value =  _proxy_jslib_handle(style, (name), 0, 0);
      if(name == 'opacity') {
        if ( _proxy_jslib_handle(null, 'value', value, 0, 0) == 1) {
           value= _proxy_jslib_assign_rval('', 'value', '=', ( (/Gecko/.test(navigator.userAgent) &&
            !/Konqueror|Safari|KHTML/.test(navigator.userAgent)) ? 0.999999 : 1.0), value);
          if(/MSIE/.test(navigator.userAgent) && !window.opera)
            element.style.filter =  _proxy_jslib_handle(element.getStyle('filter'), 'replace', '', 1, 0)(/alpha\([^\)]*\)/gi,'');
        } else if( _proxy_jslib_handle(null, 'value', value, 0, 0) === '') {
          if(/MSIE/.test(navigator.userAgent) && !window.opera)
            element.style.filter =  _proxy_jslib_handle(element.getStyle('filter'), 'replace', '', 1, 0)(/alpha\([^\)]*\)/gi,'');
        } else {
          if( _proxy_jslib_handle(null, 'value', value, 0, 0) < 0.00001)  value= _proxy_jslib_assign_rval('', 'value', '=', ( 0), value);
          if(/MSIE/.test(navigator.userAgent) && !window.opera)
            element.style.filter =  _proxy_jslib_handle(element.getStyle('filter'), 'replace', '', 1, 0)(/alpha\([^\)]*\)/gi,'') +
              'alpha(opacity='+ _proxy_jslib_handle(null, 'value', value, 0, 0)*100+')';
        }
      } else if(['float','cssFloat'].include(name)) name = (typeof element.style.styleFloat != 'undefined') ? 'styleFloat' : 'cssFloat';
       _proxy_jslib_assign('', element.style, (name.camelize()), '=', (  _proxy_jslib_handle(null, 'value', value, 0, 0)));
    }
    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) {
         _proxy_jslib_assign('', element.style, 'top', '=', ( 0));
        element.style.left = 0;
      }
    }
    return element;
  },

  undoPositioned: function(element) {
    element = $(element);
    if (element._madePositioned) {
      element._madePositioned = undefined;
      element.style.position =
         _proxy_jslib_assign('', 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});

Element._attributeTranslations = {};

Element._attributeTranslations.names = {
  colspan:   "colSpan",
  rowspan:   "rowSpan",
  valign:    "vAlign",
  datetime:  "dateTime",
  accesskey: "accessKey",
  tabindex:  "tabIndex",
  enctype:   "encType",
  maxlength: "maxLength",
  readonly:  "readOnly",
  longdesc:  "longDesc"
};

Element._attributeTranslations.values = {
  _getAttr: function(element, attribute) {
    return element.getAttribute(attribute, 2);
  },

  _flag: function(element, attribute) {
    return $(element).hasAttribute(attribute) ? attribute : null;
  },

  style: function(element) {
    return  _proxy_jslib_handle(element.style, 'cssText', '', 0, 0).toLowerCase();
  },

  title: function(element) {
    var node = element.getAttributeNode('title');
    return node.specified ?  _proxy_jslib_handle(node, 'nodeValue', '', 0, 0) : null;
  }
};

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

Element.Methods.Simulated = {
  hasAttribute: function(element, attribute) {
    var t = Element._attributeTranslations;
    attribute =  _proxy_jslib_handle(t.names, (attribute), 0, 0) || attribute;
    return $(element).getAttributeNode(attribute).specified;
  }
};

// IE is missing .innerHTML support for TABLE-related elements
if (document.all && !window.opera){
  Element.Methods.update = function(element, html) {
    element = $(element);
    html = typeof html == 'undefined' ? '' :  _proxy_jslib_handle(html, 'toString', '', 1, 0)();
    var tagName = element.tagName.toUpperCase();
    if (['THEAD','TBODY','TR','TD'].include(tagName)) {
      var div = document.createElement('div');
      switch (tagName) {
        case 'THEAD':
        case 'TBODY':
           _proxy_jslib_assign('', div, 'innerHTML', '=', ( '<table><tbody>' +  html.stripScripts() + '</tbody></table>'));
          depth = 2;
          break;
        case 'TR':
           _proxy_jslib_assign('', div, 'innerHTML', '=', ( '<table><tbody><tr>' +  html.stripScripts() + '</tr></tbody></table>'));
          depth = 3;
          break;
        case 'TD':
           _proxy_jslib_assign('', 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 {
       _proxy_jslib_assign('', element, 'innerHTML', '=', ( html.stripScripts()));
    }
     _proxy_jslib_handle(null, 'setTimeout', setTimeout, 1, 0)(function() {html.evalScripts()}, 10);
    return element;
  }
};

Object.extend(Element, Element.Methods);

var _nativeExtensions = false;

if(/Konqueror|Safari|KHTML/.test(navigator.userAgent))
  ['', 'Form', 'Input', 'TextArea', 'Select'].each(function(tag) {
    var className = 'HTML' + tag + 'Element';
    if( _proxy_jslib_handle(window, (className), 0, 0)) return;
    var klass =  _proxy_jslib_assign('', window, (className), '=', ( {}));
    klass.prototype = document.createElement(tag ? tag.toLowerCase() : 'div').__proto__;
  });

Element.addMethods = function(methods) {
  Object.extend(Element.Methods, methods || {});

  function copy(methods, destination, onlyIfAbsent) {
    onlyIfAbsent = onlyIfAbsent || false;
    var cache = Element.extend.cache;
    for (var property in methods) {
      var value =  _proxy_jslib_handle(methods, (property), 0, 0);
      if (!onlyIfAbsent || !(property in destination))
         _proxy_jslib_assign('', destination, (property), '=', ( cache.findOrStore( _proxy_jslib_handle(null, 'value', value, 0, 0))));
    }
  }

  if (typeof HTMLElement != 'undefined') {
    copy(Element.Methods, HTMLElement.prototype);
    copy(Element.Methods.Simulated, HTMLElement.prototype, true);
    copy(Form.Methods, HTMLFormElement.prototype);
    [HTMLInputElement, HTMLTextAreaElement, HTMLSelectElement].each(function(klass) {
      copy(Form.Element.Methods, klass.prototype);
    });
    _nativeExtensions = true;
  }
}

var Toggle = new (Object)();
Toggle.display = Element.toggle;

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

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

Abstract.Insertion.prototype = {
  initialize: function(element, content) {
    this.element = $(element);
     _proxy_jslib_assign('', this, 'content', '=', (  _proxy_jslib_handle(null, 'content', content, 0, 0).stripScripts()));

    if (this.adjacency &&  _proxy_jslib_handle(this.element, 'insertAdjacentHTML', '', 0, 0)) {
      try {
         _proxy_jslib_handle(this.element, 'insertAdjacentHTML', '', 1, 0)(this.adjacency,  _proxy_jslib_handle(this, 'content', '', 0, 0));
      } 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( _proxy_jslib_handle(this, 'content', '', 0, 0))]);
    }

     _proxy_jslib_handle(null, 'setTimeout', setTimeout, 1, 0)(function() { _proxy_jslib_handle(null, 'content', content, 0, 0).evalScripts()}, 10);
  },

  contentFromAnonymousTable: function() {
    var div = document.createElement('div');
     _proxy_jslib_assign('', div, 'innerHTML', '=', ( '<table><tbody>' +  _proxy_jslib_handle(this, 'content', '', 0, 0) + '</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);
var Selector = Class.create();
Selector.prototype = {
  initialize: function(expression) {
    this.params = {classNames: []};
    this.expression =  _proxy_jslib_handle(expression, 'toString', '', 1, 0)().strip();
    this.parseExpression();
    this.compileMatcher();
  },

  parseExpression: function() {
    function abort(message) { throw 'Parse error in selector: ' + message; }

    if (this.expression == '')  abort('empty expression');

    var params = this.params, expr = this.expression, match, modifier, clause, rest;
    while (match = expr.match(/^(.*)\[([a-z0-9_:-]+?)(?:([~\|!]?=)(?:"([^"]*)"|([^\]\s]*)))?\]$/i)) {
      params.attributes = params.attributes || [];
      params.attributes.push({name: match[2], operator: match[3], value: match[4] || match[5] || ''});
      expr = match[1];
    }

    if (expr == '*') return this.params.wildcard = true;

    while (match = expr.match(/^([^a-z0-9_-])?([a-z0-9_-]+)(.*)/i)) {
      modifier = match[1], clause = match[2], rest = match[3];
      switch (modifier) {
        case '#':       params.id = clause; break;
        case '.':       params.classNames.push(clause); break;
        case '':
        case undefined: params.tagName = clause.toUpperCase(); break;
        default:        abort(expr.inspect());
      }
      expr = rest;
    }

    if (expr.length > 0) abort(expr.inspect());
  },

  buildMatchExpression: function() {
    var params = this.params, conditions = [], clause;

    if (params.wildcard)
      conditions.push('true');
    if (clause = params.id)
      conditions.push('element.readAttribute("id") == ' + clause.inspect());
    if (clause = params.tagName)
      conditions.push('element.tagName.toUpperCase() == ' + clause.inspect());
    if ((clause = params.classNames).length > 0)
      for (var i = 0, length = clause.length; i < length; i++)
        conditions.push('element.hasClassName(' +  _proxy_jslib_handle(clause, (i), 0, 0).inspect() + ')');
    if (clause = params.attributes) {
      clause.each(function(attribute) {
        var value = 'element.readAttribute(' + attribute.name.inspect() + ')';
        var splitValueBy = function(delimiter) {
          return  _proxy_jslib_handle(null, 'value', value, 0, 0) + ' && ' +  _proxy_jslib_handle(null, 'value', value, 0, 0) + '.split(' + delimiter.inspect() + ')';
        }

        switch (attribute.operator) {
          case '=':       conditions.push( _proxy_jslib_handle(null, 'value', value, 0, 0) + ' == ' +  _proxy_jslib_handle(attribute, 'value', '', 0, 0).inspect()); break;
          case '~=':      conditions.push(splitValueBy(' ') + '.include(' +  _proxy_jslib_handle(attribute, 'value', '', 0, 0).inspect() + ')'); break;
          case '|=':      conditions.push(
                            splitValueBy('-') + '.first().toUpperCase() == ' +  _proxy_jslib_handle(attribute, 'value', '', 0, 0).toUpperCase().inspect()
 ); break;
          case '!=':      conditions.push( _proxy_jslib_handle(null, 'value', value, 0, 0) + ' != ' +  _proxy_jslib_handle(attribute, 'value', '', 0, 0).inspect()); break;
          case '':
          case undefined: conditions.push('element.hasAttribute(' + attribute.name.inspect() + ')'); break;
          default:        throw 'Unknown operator ' + attribute.operator + ' in selector';
        }
      });
    }

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

  compileMatcher: function() {
    this.match = _proxy_jslib_new_function('element', 'if (!element.tagName) return false; \
      element = $(element); \
      return ' + this.buildMatchExpression());
  },

  findElements: function(scope) {
    var element;

    if (element = $(this.params.id))
      if (this.match(element))
        if (!scope || Element.childOf(element, scope))
          return [element];

    scope =  _proxy_jslib_handle((scope || document), 'getElementsByTagName', '', 1, 0)(this.params.tagName || '*');

    var results = [];
    for (var i = 0, length = scope.length; i < length; i++)
      if (this.match(element =  _proxy_jslib_handle(scope, (i), 0, 0)))
        results.push(Element.extend(element));

    return results;
  },

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

Object.extend(Selector, {
  matchElements: function(elements, expression) {
    var selector = new (Selector)(expression);
    return elements.select(selector.match.bind(selector)).map(Element.extend);
  },

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

  findChildElements: function(element, expressions) {
    return expressions.map(function(expression) {
      return expression.match(/[^\s"]+(?:"[^"]*"[^\s"]+)*/g).inject([null], function(results, expr) {
        var selector = new (Selector)(expr);
        return results.inject([], function(elements, result) {
          return elements.concat(selector.findElements(result || element));
        });
      });
    }).flatten();
  }
});

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 ( _proxy_jslib_handle(null, 'value', value, 0, 0) != undefined) {
          if ( _proxy_jslib_handle(result, (key), 0, 0)) {
            if ( _proxy_jslib_handle(result, (key), 0, 0).constructor != Array)  _proxy_jslib_assign('', result, (key), '=', ( [ _proxy_jslib_handle(result, (key), 0, 0)]));
             _proxy_jslib_handle(result, (key), 0, 0).push( _proxy_jslib_handle(null, 'value', value, 0, 0));
          }
          else  _proxy_jslib_assign('', result, (key), '=', (  _proxy_jslib_handle(null, 'value', value, 0, 0)));
        }
      }
      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 $A( _proxy_jslib_handle($(form), 'getElementsByTagName', '', 1, 0)('*')).inject([],
      function(elements, child) {
        if ( _proxy_jslib_handle(Form.Element.Serializers, (child.tagName.toLowerCase()), 0, 0))
          elements.push(Element.extend(child));
        return elements;
      }
    );
  },

  getInputs: function(form, typeName, name) {
    form = $(form);
    var inputs =  _proxy_jslib_handle(form, 'getElementsByTagName', '', 1, 0)('input');

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

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

    return matchingInputs;
  },

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

  enable: function(form) {
    form = $(form);
    form.getElements().each(function(element) {
      element.disabled = '';
    });
    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;
  }
}

Object.extend(Form, Form.Methods);

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

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 ( _proxy_jslib_handle(null, 'value', value, 0, 0) != undefined) {
        var pair = {};
         _proxy_jslib_assign('', pair, (element.name), '=', (  _proxy_jslib_handle(null, 'value', value, 0, 0)));
        return Hash.toQueryString(pair);
      }
    }
    return '';
  },

  getValue: function(element) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    return  _proxy_jslib_handle(Form.Element.Serializers, (method), 1, 0)(element);
  },

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

  present: function(element) {
    return  _proxy_jslib_handle($(element), 'value', '', 0, 0) != '';
  },

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

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

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

Object.extend(Form.Element, Form.Element.Methods);
var Field = Form.Element;
var $F = Form.Element.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 ?  _proxy_jslib_handle(element, 'value', '', 0, 0) : null;
  },

  textarea: function(element) {
    return  _proxy_jslib_handle(element, 'value', '', 0, 0);
  },

  select: function(element) {
    return  _proxy_jslib_handle(this, (element.type == 'select-one' ?
      'selectOne' : 'selectMany'), 1, 0)(element);
  },

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

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

    for (var i = 0, values = []; i < length; i++) {
      var opt =  _proxy_jslib_handle(element.options, (i), 0, 0);
      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') ?  _proxy_jslib_handle(opt, 'value', '', 0, 0) : 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() {
     _proxy_jslib_handle(null, 'setInterval', setInterval, 1, 0)(this.onTimerEvent.bind(this), this.frequency * 1000);
  },

  onTimerEvent: function() {
    var value = this.getValue();
    var changed = ('string' == typeof this.lastValue && 'string' == typeof  _proxy_jslib_handle(null, 'value', value, 0, 0)
 ? this.lastValue !=  _proxy_jslib_handle(null, 'value', value, 0, 0) : String(this.lastValue) != String( _proxy_jslib_handle(null, 'value', value, 0, 0)));
    if (changed) {
      this.callback(this.element,  _proxy_jslib_handle(null, 'value', value, 0, 0));
      this.lastValue =  _proxy_jslib_handle(null, 'value', value, 0, 0);
    }
  }
}

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 !=  _proxy_jslib_handle(null, 'value', value, 0, 0)) {
      this.callback(this.element,  _proxy_jslib_handle(null, 'value', value, 0, 0));
      this.lastValue =  _proxy_jslib_handle(null, 'value', value, 0, 0);
    }
  },

  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 ||  _proxy_jslib_handle(document, 'body', '', 0, 0).scrollLeft));
  },

  pointerY: function(event) {
    return event.pageY || (event.clientY +
      (document.documentElement.scrollTop ||  _proxy_jslib_handle(document, 'body', '', 0, 0).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,  _proxy_jslib_handle(Event.observers, (i), 0, 0));
       _proxy_jslib_handle(Event.observers, (i), 0, 0)[0] = null;
    }
    Event.observers = false;
  },

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

    if (name == 'keypress' &&
        (navigator.appVersion.match(/Konqueror|Safari|KHTML/)
 || element.attachEvent))
      name = 'keydown';

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

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

    if (name == 'keypress' &&
        (navigator.appVersion.match(/Konqueror|Safari|KHTML/)
 || element.detachEvent))
      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 (navigator.appVersion.match(/\bMSIE\b/))
  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
 ||  _proxy_jslib_handle(document, 'body', '', 0, 0).scrollLeft
 || 0;
    this.deltaY =  window.pageYOffset
 || document.documentElement.scrollTop
 ||  _proxy_jslib_handle(document, 'body', '', 0, 0).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 ==  _proxy_jslib_handle(document, 'body', '', 0, 0)) return element;

    while ((element = element.parentNode) && element !=  _proxy_jslib_handle(document, 'body', '', 0, 0))
      if (Element.getStyle(element, 'position') != 'static')
        return element;

    return  _proxy_jslib_handle(document, 'body', '', 0, 0);
  },

  // caches x/y coordinate pair to use with overlap
  within: function(element, x, y) {
    if (this.includeScrollOffsets)
      return this.withinIncludingScrolloffsets(element, x, y);
    this.xcomp = x;
    this.ycomp = y;
    this.offset = 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== _proxy_jslib_handle(document, 'body', '', 0, 0))
        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= _proxy_jslib_assign_rval('', 'parent', '=', ( Position.offsetParent(target)), parent);
      delta = Position.page( _proxy_jslib_handle(null, 'parent', parent, 0, 0));
    }

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

    // set position
    if(options.setLeft)   target.style.left = (p[0] - delta[0] + options.offsetLeft) + 'px';
    if(options.setTop)     _proxy_jslib_assign('', 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 =  _proxy_jslib_handle(null, 'top', top, 0, 0) - parseFloat( _proxy_jslib_handle(element.style, 'top', '', 0, 0) || 0);
    element._originalWidth = element.style.width;
    element._originalHeight = element.style.height;

    element.style.position = 'absolute';
     _proxy_jslib_assign('', element.style, 'top', '=', (  _proxy_jslib_handle(null, 'top', top, 0, 0) + '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( _proxy_jslib_handle(element.style, 'top', '', 0, 0) || 0) - (element._originalTop || 0);
    var left = parseFloat(element.style.left || 0) - (element._originalLeft || 0);

     _proxy_jslib_assign('', element.style, 'top', '=', (  _proxy_jslib_handle(null, 'top', top, 0, 0) + '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 (/Konqueror|Safari|KHTML/.test(navigator.userAgent)) {
  Position.cumulativeOffset = function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop || 0;
      valueL += element.offsetLeft || 0;
      if (element.offsetParent ==  _proxy_jslib_handle(document, 'body', '', 0, 0))
        if (Element.getStyle(element, 'position') == 'absolute') break;

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

    return [valueL, valueT];
  }
}

Element.addMethods(); ;
_proxy_jslib_flush_write_buffers() ;