/*  Prototype: an object-oriented Javascript library, version 1.2.0

 *  (c) 2005 Sam Stephenson <sam@conio.net>

 *

 *  THIS FILE IS AUTOMATICALLY GENERATED. When sending patches, please diff

 *  against the source tree, available from the Prototype darcs repository. 

 *

 *  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: '1.2.0'

}



var Class = {

  create: function() {

    return function() { 

      this.initialize.apply(this, arguments);

    }

  }

}



var Abstract = new Object();



Object.prototype.extend = function(object) {

  for (property in object) {

    this[property] = object[property];

  }

  return this;

}



Function.prototype.bind = function(object) {

  var method = this;

  return function() {

    method.apply(object, arguments);

  }

}



Function.prototype.bindAsEventListener = function(object) {

  var method = this;

  return function(event) {

    method.call(object, event || window.event);

  }

}



Number.prototype.toColorPart = function() {

  var digits = this.toString(16);

  if (this < 16) return '0' + digits;

  return digits;

}



var Try = {

  these: function() {

    var returnValue;

    

    for (var i = 0; i < arguments.length; i++) {

      var lambda = arguments[i];

      try {

        returnValue = lambda();

        break;

      } catch (e) {}

    }

    

    return returnValue;

  }

}



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



var PeriodicalExecuter = Class.create();

PeriodicalExecuter.prototype = {

  initialize: function(callback, frequency) {

    this.callback = callback;

    this.frequency = frequency;

    this.currentlyExecuting = false;

    

    this.registerCallback();

  },

  

  registerCallback: function() {

    setTimeout(this.onTimerEvent.bind(this), this.frequency * 1000);

  },

  

  onTimerEvent: function() {

    if (!this.currentlyExecuting) {

      try { 

        this.currentlyExecuting = true;

        this.callback(); 

      } finally { 

        this.currentlyExecuting = false;

      }

    }

    

    this.registerCallback();

  }

}



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



function $() {

  var elements = new Array();

  

  for (var i = 0; i < arguments.length; i++) {

    var element = arguments[i];

    if (typeof element == 'string')

      element = document.getElementById(element);



    if (arguments.length == 1) 

      return element;

      

    elements.push(element);

  }

  

  return elements;

}



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



if (!Array.prototype.push) {

  Array.prototype.push = function() {

		var startLength = this.length;

		for (var i = 0; i < arguments.length; i++)

      this[startLength + i] = arguments[i];

	  return this.length;

  }

}



if (!Function.prototype.apply) {

  // Based on code from http://www.youngpup.net/

  Function.prototype.apply = function(object, parameters) {

    var parameterStrings = new Array();

    if (!object)     object = window;

    if (!parameters) parameters = new Array();

    

    for (var i = 0; i < parameters.length; i++)

      parameterStrings[i] = 'x[' + i + ']';

    

    object.__apply__ = this;

    var result = eval('obj.__apply__(' + 

      parameterStrings[i].join(', ') + ')');

    object.__apply__ = null;

    

    return result;

  }

}



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



var Ajax = {

  getTransport: function() {

    return Try.these(

      function() {return new ActiveXObject('Msxml2.XMLHTTP')},

      function() {return new ActiveXObject('Microsoft.XMLHTTP')},

      function() {return new XMLHttpRequest()}

    ) || false;

  },

  

  emptyFunction: function() {}

}



Ajax.Base = function() {};

Ajax.Base.prototype = {

  setOptions: function(options) {

    this.options = {

      method:       'post',

      asynchronous: true,

      parameters:   ''

    }.extend(options || {});

  }

}



Ajax.Request = Class.create();

Ajax.Request.Events = 

  ['Uninitialized', 'Loading', 'Loaded', 'Interactive', 'Complete'];



Ajax.Request.prototype = (new Ajax.Base()).extend({

  initialize: function(url, options) {

    this.transport = Ajax.getTransport();

    this.setOptions(options);

  

    try {

      if (this.options.method == 'get')

        url += '?' + this.options.parameters + '&_=';

    

      this.transport.open(this.options.method, url, true);

      

      if (this.options.asynchronous) {

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

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

      }

              

      this.transport.setRequestHeader('X-Requested-With', 'XMLHttpRequest');

      this.transport.setRequestHeader('X-Prototype-Version', Prototype.Version);



      if (this.options.method == 'post') {

        this.transport.setRequestHeader('Connection', 'close');

        this.transport.setRequestHeader('Content-type',

          'application/x-www-form-urlencoded');

      }

      

      this.transport.send(this.options.method == 'post' ? 

        this.options.parameters + '&_=' : null);

                      

    } catch (e) {

    }    

  },

      

  onStateChange: function() {

    var readyState = this.transport.readyState;

    if (readyState != 1)

      this.respondToReadyState(this.transport.readyState);

  },

  

  respondToReadyState: function(readyState) {

    var event = Ajax.Request.Events[readyState];

    (this.options['on' + event] || Ajax.emptyFunction)(this.transport);

  }

});



Ajax.Updater = Class.create();

Ajax.Updater.prototype = (new Ajax.Base()).extend({

  initialize: function(container, url, options) {

    this.container = $(container);

    this.setOptions(options);

  

    if (this.options.asynchronous) {

      this.onComplete = this.options.onComplete;

      this.options.onComplete = this.updateContent.bind(this);

    }

    

    this.request = new Ajax.Request(url, this.options);

    

    if (!this.options.asynchronous)

      this.updateContent();

  },

  

  updateContent: function() {

    if (this.options.insertion) {

      new this.options.insertion(this.container,

        this.request.transport.responseText);

    } else {

      this.container.innerHTML = this.request.transport.responseText;

    }



    if (this.onComplete) {

      setTimeout((function() {this.onComplete(this.request)}).bind(this), 10);

    }

  }

});



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



var Field = {

  clear: function() {

    for (var i = 0; i < arguments.length; i++)

      $(arguments[i]).value = '';

  },



  focus: function(element) {

    $(element).focus();

  },

  

  present: function() {

    for (var i = 0; i < arguments.length; i++)

      if ($(arguments[i]).value == '') return false;

    return true;

  },

  

  select: function(element) {

    $(element).select();

  },

   

  activate: function(element) {

    $(element).focus();

    $(element).select();

  }

}



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



var Form = {

  serialize: function(form) {

    var elements = Form.getElements($(form));

    var queryComponents = new Array();

    

    for (var i = 0; i < elements.length; i++) {

      var queryComponent = Form.Element.serialize(elements[i]);

      if (queryComponent)

        queryComponents.push(queryComponent);

    }

    

    return queryComponents.join('&');

  },

  

  getElements: function(form) {

    form = $(form);

    var elements = new Array();



    for (tagName in Form.Element.Serializers) {

      var tagElements = form.getElementsByTagName(tagName);

      for (var j = 0; j < tagElements.length; j++)

        elements.push(tagElements[j]);

    }

    return elements;

  },

  

  disable: function(form) {

    var elements = Form.getElements(form);

    for (var i = 0; i < elements.length; i++) {

      var element = elements[i];

      element.blur();

      element.disable = 'true';

    }

  },



  focusFirstElement: function(form) {

    form = $(form);

    var elements = Form.getElements(form);

    for (var i = 0; i < elements.length; i++) {

      var element = elements[i];

      if (element.type != 'hidden' && !element.disabled) {

        Field.activate(element);

        break;

      }

    }

  },



  reset: function(form) {

    $(form).reset();

  }

}



Form.Element = {

  serialize: function(element) {

    element = $(element);

    var method = element.tagName.toLowerCase();

    var parameter = Form.Element.Serializers[method](element);

    

    if (parameter)

      return encodeURIComponent(parameter[0]) + '=' + 

        encodeURIComponent(parameter[1]);                   

  },

  

  getValue: function(element) {

    element = $(element);

    var method = element.tagName.toLowerCase();

    var parameter = Form.Element.Serializers[method](element);

    

    if (parameter) 

      return parameter[1];

  }

}



Form.Element.Serializers = {

  input: function(element) {

    switch (element.type.toLowerCase()) {

      case 'hidden':

      case 'password':

      case 'text':

        return Form.Element.Serializers.textarea(element);

      case 'checkbox':  

      case 'radio':

        return Form.Element.Serializers.inputSelector(element);

    }

    return false;

  },



  inputSelector: function(element) {

    if (element.checked)

      return [element.name, element.value];

  },



  textarea: function(element) {

    return [element.name, element.value];

  },



  select: function(element) {

    var index = element.selectedIndex;

    var value = element.options[index].value || element.options[index].text;

    return [element.name, (index >= 0) ? value : ''];

  }

}



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



var $F = Form.Element.getValue;



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



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() {

    setTimeout(this.onTimerEvent.bind(this), this.frequency * 1000);

  },

  

  onTimerEvent: function() {

    var value = this.getValue();

    if (this.lastValue != value) {

      this.callback(this.element, value);

      this.lastValue = value;

    }

    

    this.registerCallback();

  }

}



Form.Element.Observer = Class.create();

Form.Element.Observer.prototype = (new Abstract.TimedObserver()).extend({

  getValue: function() {

    return Form.Element.getValue(this.element);

  }

});



Form.Observer = Class.create();

Form.Observer.prototype = (new Abstract.TimedObserver()).extend({

  getValue: function() {

    return Form.serialize(this.element);

  }

});





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



document.getElementsByClassName = function(className) {

  var children = document.getElementsByTagName('*') || document.all;

  var elements = new Array();

  

  for (var i = 0; i < children.length; i++) {

    var child = children[i];

    var classNames = child.className.split(' ');

    for (var j = 0; j < classNames.length; j++) {

      if (classNames[j] == className) {

        elements.push(child);

        break;

      }

    }

  }

  

  return elements;

}



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



var Element = {

  toggle: function() {

    for (var i = 0; i < arguments.length; i++) {

      var element = $(arguments[i]);

      element.style.display = 

        (element.style.display == 'none' ? '' : 'none');

    }

  },



  hide: function() {

    for (var i = 0; i < arguments.length; i++) {

      var element = $(arguments[i]);

      element.style.display = 'none';

    }

  },



  show: function() {

    for (var i = 0; i < arguments.length; i++) {

      var element = $(arguments[i]);

      element.style.display = '';

    }

  },



  remove: function(element) {

    element = $(element);

    element.parentNode.removeChild(element);

  },

   

  getHeight: function(element) {

    element = $(element);

    return element.offsetHeight; 

  }

}



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);

    this.content = content;

    

    if (this.adjacency && this.element.insertAdjacentHTML) {

      this.element.insertAdjacentHTML(this.adjacency, this.content);

    } else {

      this.range = this.element.ownerDocument.createRange();

      if (this.initializeRange) this.initializeRange();

      this.fragment = this.range.createContextualFragment(this.content);

      this.insertContent();

    }

  }

}



var Insertion = new Object();



Insertion.Before = Class.create();

Insertion.Before.prototype = (new Abstract.Insertion('beforeBegin')).extend({

  initializeRange: function() {

    this.range.setStartBefore(this.element);

  },

  

  insertContent: function() {

    this.element.parentNode.insertBefore(this.fragment, this.element);

  }

});



Insertion.Top = Class.create();

Insertion.Top.prototype = (new Abstract.Insertion('afterBegin')).extend({

  initializeRange: function() {

    this.range.selectNodeContents(this.element);

    this.range.collapse(true);

  },

  

  insertContent: function() {  

    this.element.insertBefore(this.fragment, this.element.firstChild);

  }

});



Insertion.Bottom = Class.create();

Insertion.Bottom.prototype = (new Abstract.Insertion('beforeEnd')).extend({

  initializeRange: function() {

    this.range.selectNodeContents(this.element);

    this.range.collapse(this.element);

  },

  

  insertContent: function() {

    this.element.appendChild(this.fragment);

  }

});



Insertion.After = Class.create();

Insertion.After.prototype = (new Abstract.Insertion('afterEnd')).extend({

  initializeRange: function() {

    this.range.setStartAfter(this.element);

  },

  

  insertContent: function() {

    this.element.parentNode.insertBefore(this.fragment, 

      this.element.nextSibling);

  }

});



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



var Effect = new Object();



Effect.Highlight = Class.create();

Effect.Highlight.prototype = {

  initialize: function(element) {

    this.element = $(element);

    this.start  = 153;

    this.finish = 255;

    this.current = this.start;

    this.fade();

  },

  

  fade: function() {

    if (this.isFinished()) return;

    if (this.timer) clearTimeout(this.timer);

    this.highlight(this.element, this.current);

    this.current += 17;

    this.timer = setTimeout(this.fade.bind(this), 250);

  },

  

  isFinished: function() {

    return this.current > this.finish;

  },

  

  highlight: function(element, current) {

    element.style.backgroundColor = "#ffff" + current.toColorPart();

  }

}





Effect.Fade = Class.create();

Effect.Fade.prototype = {

  initialize: function(element) {

    this.element = $(element);

    this.start  = 100;

    this.finish = 0;

    this.current = this.start;

    this.fade();

  },

  

  fade: function() {

    if (this.isFinished()) { this.element.style.display = 'none'; return; }

    if (this.timer) clearTimeout(this.timer);

    this.setOpacity(this.element, this.current);

    this.current -= 10;

    this.timer = setTimeout(this.fade.bind(this), 50);

  },

  

  isFinished: function() {

    return this.current <= this.finish;

  },

  

  setOpacity: function(element, opacity) {

    opacity = (opacity == 100) ? 99.999 : opacity;

    element.style.filter = "alpha(opacity:"+opacity+")";

    element.style.opacity = opacity/100 /*//*/;

  }

}



Effect.Scale = Class.create();

Effect.Scale.prototype = {

  initialize: function(element, percent) {

    this.element = $(element);

    this.startScale    = 1.0;

    this.startHeight   = this.element.offsetHeight;

    this.startWidth    = this.element.offsetWidth;

    this.currentHeight = this.startHeight;

    this.currentWidth  = this.startWidth;

    this.finishScale   = (percent/100) /*//*/;

    if (this.element.style.fontSize=="") this.sizeEm = 1.0;

    if (this.element.style.fontSize.indexOf("em")>0)

       this.sizeEm      = parseFloat(this.element.style.fontSize);

    if(this.element.effect_scale) {

      clearTimeout(this.element.effect_scale.timer);

      this.startScale  = this.element.effect_scale.currentScale;

      this.startHeight = this.element.effect_scale.startHeight;

      this.startWidth  = this.element.effect_scale.startWidth;

      if(this.element.effect_scale.sizeEm) 

        this.sizeEm    = this.element.effect_scale.sizeEm;      

    }

    this.element.effect_scale = this;

    this.currentScale  = this.startScale;

    this.factor        = this.finishScale - this.startScale;

    this.options       = arguments[2] || {}; 

    this.scale();

  },

  

  scale: function() {

    if (this.isFinished()) { 

      this.setDimensions(this.element, this.startWidth*this.finishScale, this.startHeight*this.finishScale);

      if(this.sizeEm) this.element.style.fontSize = this.sizeEm*this.finishScale + "em";

      if(this.options.complete) this.options.complete(this);

      return; 

    }

    if (this.timer) clearTimeout(this.timer);

    if (this.options.step) this.options.step(this);

    this.setDimensions(this.element, this.currentWidth, this.currentHeight);

    if(this.sizeEm) this.element.style.fontSize = this.sizeEm*this.currentScale + "em";

    this.currentScale += (this.factor/10) /*//*/;

    this.currentWidth = this.startWidth * this.currentScale;

    this.currentHeight = this.startHeight * this.currentScale;

    this.timer = setTimeout(this.scale.bind(this), 50);

  },

  

  isFinished: function() {

    return (this.factor < 0) ? 

      this.currentScale <= this.finishScale : this.currentScale >= this.finishScale;

  },

  

  setDimensions: function(element, width, height) {

    element.style.width = width + 'px';

    element.style.height = height + 'px';

  }

}



Effect.Squish = Class.create();

Effect.Squish.prototype = {

  initialize: function(element) {

    this.element = $(element);

    new Effect.Scale(this.element, 1, { complete: this.hide.bind(this) } );

  },

  hide: function() {

    this.element.style.display = 'none';

  } 

}



Effect.Puff = Class.create();

Effect.Puff.prototype = {

  initialize: function(element) {

    this.element = $(element);

    this.opacity = 100;

    this.startTop  = this.element.top || this.element.offsetTop;

    this.startLeft = this.element.left || this.element.offsetLeft;

    new Effect.Scale(this.element, 200, { step: this.fade.bind(this), complete: this.hide.bind(this) } );

  },

  fade: function(effect) {

    topd    = (((effect.currentScale)*effect.startHeight) - effect.startHeight)/2;

    leftd   = (((effect.currentScale)*effect.startWidth) - effect.startWidth)/2;

    this.element.style.position='absolute';

    this.element.style.top = this.startTop-topd + "px";

    this.element.style.left = this.startLeft-leftd + "px";

    this.opacity -= 10;

    this.setOpacity(this.element, this.opacity); 

    if(navigator.appVersion.indexOf('AppleWebKit')>0) this.element.innerHTML += ''; //force redraw on safari

  },

  hide: function() {

    this.element.style.display = 'none';

  },

  setOpacity: function(element, opacity) {

    opacity = (opacity == 100) ? 99.999 : opacity;

    element.style.filter = "alpha(opacity:"+opacity+")";

    element.style.opacity = opacity/100 /*//*/;

  }

}



Effect.Appear = Class.create();

Effect.Appear.prototype = {

  initialize: function(element) {

    this.element = $(element);

    this.start  = 0;

    this.finish = 100;

    this.current = this.start;

    this.fade();

  },

  

  fade: function() {

    if (this.isFinished()) return;

    if (this.timer) clearTimeout(this.timer);

    this.setOpacity(this.element, this.current);

    this.current += 10;

    this.timer = setTimeout(this.fade.bind(this), 50);

  },

  

  isFinished: function() {

    return this.current > this.finish;

  },

  

  setOpacity: function(element, opacity) {

    opacity = (opacity == 100) ? 99.999 : opacity;

    element.style.filter = "alpha(opacity:"+opacity+")";

    element.style.opacity = opacity/100 /*//*/;

    element.style.display = '';

  }

}



Effect.ContentZoom = Class.create();

Effect.ContentZoom.prototype = {

  initialize: function(element, percent) {

    this.element = $(element);

    if (this.element.style.fontSize=="") this.sizeEm = 1.0;

    if (this.element.style.fontSize.indexOf("em")>0)

       this.sizeEm = parseFloat(this.element.style.fontSize);

    if(this.element.effect_contentzoom) {

      this.sizeEm = this.element.effect_contentzoom.sizeEm;

    }

    this.element.effect_contentzoom = this;

    this.element.style.fontSize = this.sizeEm*(percent/100) + "em" /*//*/;

    if(navigator.appVersion.indexOf('AppleWebKit')>0) { this.element.scrollTop -= 1; };

  }

}