/* 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){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; }},
 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 = $A(arguments), object = args.shift();
 return function(event) { return __method.apply(object, [( event || window.event)].concat(args).concat($A(arguments))); }
}
Object.extend(Number.prototype, {
 toColorPart: function() { var digits = this.toString(16); if (this < 16) return '0' + digits; return digits; },
 succ: function() { return this + 1; },
 times: function(iterator) { $R(0, this, true).each(iterator); return this; }
});
var Try = {
these: function() {
var returnValue;
 for (var i = 0, length = arguments.length; i < length; i++) {
 var lambda = arguments[i];
 try { returnValue = lambda(); break; } catch (e) {}
  } return returnValue; }
}
String.interpret = function(value){
 return value == null ? '' : String(value);
}
Object.extend(String.prototype, {
 gsub: function(pattern, replacement) {
  var result = '', source = this, match;
  replacement = arguments.callee.prepareReplacement(replacement);
  while (source.length > 0) {
   if (match = source.match(pattern)) {
    result += source.slice(0, match.index);
    result += String.interpret(replacement(match));
    source = source.slice(match.index + match[0].length);
   } else {
    result += source, source = '';
   }
  }
  return result;
 },
 sub: function(pattern, replacement, count) {
  replacement = this.gsub.prepareReplacement(replacement);
  count = count === undefined ? 1 : count;
  return this.gsub(pattern, function(match) {
   if (--count < 0) return match[0];
   return replacement(match);
  });
 },
 strip: function() {
  return this.replace(/^\s+/, '').replace(/\s+$/, '');
 },
 evalScripts: function() {
  return this.extractScripts().map(function(script) { return eval(script) });
 },
 escapeHTML: function() {
  var div = document.createElement('div');
  var text = document.createTextNode(this);
  div.appendChild(text);
  return 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) : '';
 },
 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.replace(/\\/g, '\\\\');
  if (useDoubleQuotes)
   return '"' + escapedString.replace(/"/g, '\\"') + '"';
  else
   return "'" + escapedString.replace(/'/g, '\\\'') + "'";
 }
});
String.prototype.parseQuery = String.prototype.toQueryParams;
var $break  = new Object();
var $continue = new Object();
var Enumerable = {
 each: function(iterator) {
  var index = 0;
  try {
   this._each(function(value) {
    try {
     iterator(value, 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)(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;
 },
 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;
 },
 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;
 }
}
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();
 },
 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(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(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 (pair.value && pair.value.constructor == Array) {
    var values = pair.value.compact();
    if (values.length < 2) pair.value = values.reduce();
    else {
    	key = encodeURIComponent(pair.key);
     values.each(function(value) {
      value = value != undefined ? encodeURIComponent(value) : '';
      parts.push(key + '=' + encodeURIComponent(value));
     });
     return;
    }
   }
   if (pair.value == 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 = 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(', ') + '}>';
 }
});
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(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);
}
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, $(parentElement) || document,
   null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
  for (var i = 0, length = query.snapshotLength; i < length; i++)
   results.push(query.snapshotItem(i));
  return results;
 };
}
document.getElementsByClassName = function(className, parentElement) {
 if (Prototype.BrowserFeatures.XPath) {
  var q = ".//*[contains(concat(' ', @class, ' '), ' " + className + " ')]";
  return document._getElementsByXPath(q, parentElement);
 } else {
  var children = ($(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 = 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;
  Object.extend(methods, Element.Methods.Simulated);
  for (var property in methods) {
   var value = methods[property];
   if (typeof value == 'function' && !(property in element))
    element[property] = cache.findOrStore(value);
  }
 }
 element._extended = true;
 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('*'));
 },
 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 (t.values[name]) return t.values[name](element, name);
   if (t.names[name]) name = t.names[name];
   var attribute = element.attributes[name];
   if(attribute) return attribute.nodeValue;
  }
  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();
 },
 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 $(element).innerHTML.match(/^\s*$/);
 },
 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 = element.style[style];
  if (!value) {
   if (document.defaultView && document.defaultView.getComputedStyle) {
    var css = document.defaultView.getComputedStyle(element, null);
    value = css ? css[style] : null;
   } else if (element.currentStyle) {
    value = element.currentStyle[style];
   }
  }
  if((value == 'auto') && ['width','height'].include(style) && (element.getStyle('display') != 'none'))
   value = element['offset'+style.capitalize()] + 'px';
  if (window.opera && ['left', 'top', 'right', 'bottom'].include(style))
   if (Element.getStyle(element, 'position') == 'static') value = 'auto';
  if(style == 'opacity') {
   if(value) return parseFloat(value);
   if(value = (element.getStyle('filter') || '').match(/alpha\(opacity=(.*)\)/))
    if(value[1]) return parseFloat(value[1]) / 100;
   return 1.0;
  }
  return value == 'auto' ? null : value;
 },
 setStyle: function(element, style) {
  element = $(element);
  for (var name in style) {
   var value = style[name];
   if(name == 'opacity') {
    if (value == 1) {
     value = (/Gecko/.test(navigator.userAgent) &&
      !/Konqueror|Safari|KHTML/.test(navigator.userAgent)) ? 0.999999 : 1.0;
     if(/MSIE/.test(navigator.userAgent) && !window.opera)
      element.style.filter = element.getStyle('filter').replace(/alpha\([^\)]*\)/gi,'');
    } else if(value === '') {
     if(/MSIE/.test(navigator.userAgent) && !window.opera)
      element.style.filter = element.getStyle('filter').replace(/alpha\([^\)]*\)/gi,'');
    } else {
     if(value < 0.00001) value = 0;
     if(/MSIE/.test(navigator.userAgent) && !window.opera)
      element.style.filter = element.getStyle('filter').replace(/alpha\([^\)]*\)/gi,'') +
       'alpha(opacity='+value*100+')';
    }
   } else if(['float','cssFloat'].include(name)) name = (typeof element.style.styleFloat != 'undefined') ? 'styleFloat' : 'cssFloat';
   element.style[name.camelize()] = 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};
  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';
   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});
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 element.style.cssText.toLowerCase();
 },

 title: function(element) {
  var node = element.getAttributeNode('title');
  return node.specified ? node.nodeValue : 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 = t.names[attribute] || attribute;
  return $(element).getAttributeNode(attribute).specified;
 }
};

if (document.all && !window.opera){
 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;
 }
};

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(window[className]) return;
  var klass = 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 = methods[property];
   if (!onlyIfAbsent || !(property in destination))
    destination[property] = cache.findOrStore(value);
  }
 }

 if (typeof HTMLElement != 'undefined') {
  copy(Element.Methods, HTMLElement.prototype);
  copy(Element.Methods.Simulated, HTMLElement.prototype, true);
  _nativeExtensions = true;
 }
}

var Toggle = new Object();
Toggle.display = Element.toggle;
Abstract.Insertion = function(adjacency) {
 this.adjacency = adjacency;
}
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 = expression.toString().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(' + clause[i].inspect() + ')');
  if (clause = params.attributes) {
   clause.each(function(attribute) {
    var value = 'element.readAttribute(' + attribute.name.inspect() + ')';
    var splitValueBy = function(delimiter) {
     return value + ' && ' + value + '.split(' + delimiter.inspect() + ')';
    }

    switch (attribute.operator) {
     case '=':    conditions.push(value + ' == ' + attribute.value.inspect()); break;
     case '~=':   conditions.push(splitValueBy(' ') + '.include(' + attribute.value.inspect() + ')'); break;
     case '|=':   conditions.push(
              splitValueBy('-') + '.first().toUpperCase() == ' + attribute.value.toUpperCase().inspect()
             ); break;
     case '!=':   conditions.push(value + ' != ' + attribute.value.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 = 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 = (scope || document).getElementsByTagName(this.params.tagName || '*');

  var results = [];
  for (var i = 0, length = scope.length; i < length; i++)
   if (this.match(element = scope[i]))
    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 Selector.matchElements(elements, expression || '*')[index || 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));
}

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;
  }
 }
}

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;
   }
  }
 }
}

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;
  }
 },

 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' &&
    (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) {}
  }
 }
});

if (navigator.appVersion.match(/\bMSIE\b/))
 Event.observe(window, 'unload', Event.unloadCache, false);
var Position = {
 includeScrollOffsets: false,

 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;
 },

 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);
 },

 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;

   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] || {})

  source = $(source);
  var p = Position.page(source);

  target = $(target);
  var delta = [0, 0];
  var parent = null;
  if (Element.getStyle(target,'position') == 'absolute') {
   parent = Position.offsetParent(target);
   delta = Position.page(parent);
  }

  if (parent == document.body) {
   delta[0] -= document.body.offsetLeft;
   delta[1] -= document.body.offsetTop;
  }
  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;
 }
}

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 == document.body)
    if (Element.getStyle(element, 'position') == 'absolute') break;

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

  return [valueL, valueT];
 }
}
Element.addMethods();