// script.aculo.us scriptaculous.js v1.8.1, Thu Jan 03 22:07:12 -0500 2008

// Copyright (c) 2005-2007 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
// 
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
// 
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
// For details, see the script.aculo.us web site: http://script.aculo.us/

var Scriptaculous = {
  Version: '1.8.1',
  require: function(libraryName) {
    // inserting via DOM fails in Safari 2.0, so brute force approach
    document.write('<script type="text/javascript" src="'+libraryName+'"><\/script>');
  },
  REQUIRED_PROTOTYPE: '1.6.0',
  load: function() {
    function convertVersionString(versionString){
      var r = versionString.split('.');
      return parseInt(r[0])*100000 + parseInt(r[1])*1000 + parseInt(r[2]);
    }
 
    if((typeof Prototype=='undefined') || 
       (typeof Element == 'undefined') || 
       (typeof Element.Methods=='undefined') ||
       (convertVersionString(Prototype.Version) < 
        convertVersionString(Scriptaculous.REQUIRED_PROTOTYPE)))
       throw("script.aculo.us requires the Prototype JavaScript framework >= " +
        Scriptaculous.REQUIRED_PROTOTYPE);
    
    $A(document.getElementsByTagName("script")).findAll( function(s) {
      return (s.src && s.src.match(/scriptaculous\.js(\?.*)?$/))
    }).each( function(s) {
      var path = s.src.replace(/scriptaculous\.js(\?.*)?$/,'');
      var includes = s.src.match(/\?.*load=([a-z,]*)/);
      (includes ? includes[1] : 'builder,effects,dragdrop,controls,slider,sound').split(',').each(
       function(include) { Scriptaculous.require(path+include+'.js') });
    });
  }
}

Scriptaculous.load();

//script.aculo.us builder.js v1.8.1, Thu Jan 03 22:07:12 -0500 2008

//Copyright (c) 2005-2007 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
//
//script.aculo.us is freely distributable under the terms of an MIT-style license.
//For details, see the script.aculo.us web site: http://script.aculo.us/

var Builder = {
NODEMAP: {
 AREA: 'map',
 CAPTION: 'table',
 COL: 'table',
 COLGROUP: 'table',
 LEGEND: 'fieldset',
 OPTGROUP: 'select',
 OPTION: 'select',
 PARAM: 'object',
 TBODY: 'table',
 TD: 'table',
 TFOOT: 'table',
 TH: 'table',
 THEAD: 'table',
 TR: 'table'
},
// note: For Firefox < 1.5, OPTION and OPTGROUP tags are currently broken,
//       due to a Firefox bug
node: function(elementName) {
 elementName = elementName.toUpperCase();
 
 // try innerHTML approach
 var parentTag = this.NODEMAP[elementName] || 'div';
 var parentElement = document.createElement(parentTag);
 try { // prevent IE "feature": http://dev.rubyonrails.org/ticket/2707
   parentElement.innerHTML = "<" + elementName + "></" + elementName + ">";
 } catch(e) {}
 var element = parentElement.firstChild || null;
   
 // see if browser added wrapping tags
 if(element && (element.tagName.toUpperCase() != elementName))
   element = element.getElementsByTagName(elementName)[0];
 
 // fallback to createElement approach
 if(!element) element = document.createElement(elementName);
 
 // abort if nothing could be created
 if(!element) return;

 // attributes (or text)
 if(arguments[1])
   if(this._isStringOrNumber(arguments[1]) ||
     (arguments[1] instanceof Array) ||
     arguments[1].tagName) {
       this._children(element, arguments[1]);
     } else {
       var attrs = this._attributes(arguments[1]);
       if(attrs.length) {
         try { // prevent IE "feature": http://dev.rubyonrails.org/ticket/2707
           parentElement.innerHTML = "<" +elementName + " " +
             attrs + "></" + elementName + ">";
         } catch(e) {}
         element = parentElement.firstChild || null;
         // workaround firefox 1.0.X bug
         if(!element) {
           element = document.createElement(elementName);
           for(attr in arguments[1]) 
             element[attr == 'class' ? 'className' : attr] = arguments[1][attr];
         }
         if(element.tagName.toUpperCase() != elementName)
           element = parentElement.getElementsByTagName(elementName)[0];
       }
     } 

 // text, or array of children
 if(arguments[2])
   this._children(element, arguments[2]);

  return element;
},
_text: function(text) {
  return document.createTextNode(text);
},

ATTR_MAP: {
 'className': 'class',
 'htmlFor': 'for'
},

_attributes: function(attributes) {
 var attrs = [];
 for(attribute in attributes)
   attrs.push((attribute in this.ATTR_MAP ? this.ATTR_MAP[attribute] : attribute) +
       '="' + attributes[attribute].toString().escapeHTML().gsub(/"/,'&quot;') + '"');
 return attrs.join(" ");
},
_children: function(element, children) {
 if(children.tagName) {
   element.appendChild(children);
   return;
 }
 if(typeof children=='object') { // array can hold nodes and text
   children.flatten().each( function(e) {
     if(typeof e=='object')
       element.appendChild(e)
     else
       if(Builder._isStringOrNumber(e))
         element.appendChild(Builder._text(e));
   });
 } else
   if(Builder._isStringOrNumber(children))
     element.appendChild(Builder._text(children));
},
_isStringOrNumber: function(param) {
 return(typeof param=='string' || typeof param=='number');
},
build: function(html) {
 var element = this.node('div');
 $(element).update(html.strip());
 return element.down();
},
dump: function(scope) { 
 if(typeof scope != 'object' && typeof scope != 'function') scope = window; //global scope 

 var tags = ("A ABBR ACRONYM ADDRESS APPLET AREA B BASE BASEFONT BDO BIG BLOCKQUOTE BODY " +
   "BR BUTTON CAPTION CENTER CITE CODE COL COLGROUP DD DEL DFN DIR DIV DL DT EM FIELDSET " +
   "FONT FORM FRAME FRAMESET H1 H2 H3 H4 H5 H6 HEAD HR HTML I IFRAME IMG INPUT INS ISINDEX "+
   "KBD LABEL LEGEND LI LINK MAP MENU META NOFRAMES NOSCRIPT OBJECT OL OPTGROUP OPTION P "+
   "PARAM PRE Q S SAMP SCRIPT SELECT SMALL SPAN STRIKE STRONG STYLE SUB SUP TABLE TBODY TD "+
   "TEXTAREA TFOOT TH THEAD TITLE TR TT U UL VAR").split(/\s+/);

 tags.each( function(tag){ 
   scope[tag] = function() { 
     return Builder.node.apply(Builder, [tag].concat($A(arguments)));  
   } 
 });
}
}


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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

var dims = element.getDimensions();    
var initialMoveX, initialMoveY;
var moveX, moveY;

switch (options.direction) {
 case 'top-left':
   initialMoveX = initialMoveY = moveX = moveY = 0; 
   break;
 case 'top-right':
   initialMoveX = dims.width;
   initialMoveY = moveY = 0;
   moveX = -dims.width;
   break;
 case 'bottom-left':
   initialMoveX = moveX = 0;
   initialMoveY = dims.height;
   moveY = -dims.height;
   break;
 case 'bottom-right':
   initialMoveX = dims.width;
   initialMoveY = dims.height;
   moveX = -dims.width;
   moveY = -dims.height;
   break;
 case 'center':
   initialMoveX = dims.width / 2;
   initialMoveY = dims.height / 2;
   moveX = -dims.width / 2;
   moveY = -dims.height / 2;
   break;
}

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

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

var dims = element.getDimensions();
var moveX, moveY;

switch (options.direction) {
 case 'top-left':
   moveX = moveY = 0;
   break;
 case 'top-right':
   moveX = dims.width;
   moveY = 0;
   break;
 case 'bottom-left':
   moveX = 0;
   moveY = dims.height;
   break;
 case 'bottom-right':
   moveX = dims.width;
   moveY = dims.height;
   break;
 case 'center':  
   moveX = dims.width / 2;
   moveY = dims.height / 2;
   break;
}

return new Effect.Parallel(
 [ new Effect.Opacity(element, { sync: true, to: 0.0, from: 1.0, transition: options.opacityTransition }),
   new Effect.Scale(element, window.opera ? 1 : 0, { sync: true, transition: options.scaleTransition, restoreAfterFinish: true}),
   new Effect.Move(element, { x: moveX, y: moveY, sync: true, transition: options.moveTransition })
 ], Object.extend({            
      beforeStartInternal: function(effect) {
        effect.effects[0].element.makePositioned().makeClipping(); 
      },
      afterFinishInternal: function(effect) {
        effect.effects[0].element.hide().undoClipping().undoPositioned().setStyle(oldStyle); }
    }, options)
);
};

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

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

Effect.Morph = Class.create(Effect.Base, {
initialize: function(element) {
 this.element = $(element);
 if (!this.element) throw(Effect._elementDoesNotExistError);
 var options = Object.extend({
   style: { }
 }, arguments[1] || { });
 
 if (!Object.isString(options.style)) this.style = $H(options.style);
 else {
   if (options.style.include(':'))
     this.style = options.style.parseStyle();
   else {
     this.element.addClassName(options.style);
     this.style = $H(this.element.getStyles());
     this.element.removeClassName(options.style);
     var css = this.element.getStyles();
     this.style = this.style.reject(function(style) {
       return style.value == css[style.key];
     });
     options.afterFinishInternal = function(effect) {
       effect.element.addClassName(effect.options.style);
       effect.transforms.each(function(transform) {
         effect.element.style[transform.style] = '';
       });
     }
   }
 }
 this.start(options);
},

setup: function(){
 function parseColor(color){
   if (!color || ['rgba(0, 0, 0, 0)','transparent'].include(color)) color = '#ffffff';
   color = color.parseColor();
   return $R(0,2).map(function(i){
     return parseInt( color.slice(i*2+1,i*2+3), 16 ) 
   });
 }
 this.transforms = this.style.map(function(pair){
   var property = pair[0], value = pair[1], unit = null;

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

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

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

Element.CSS_PROPERTIES = $w(
'backgroundColor backgroundPosition borderBottomColor borderBottomStyle ' + 
'borderBottomWidth borderLeftColor borderLeftStyle borderLeftWidth ' +
'borderRightColor borderRightStyle borderRightWidth borderSpacing ' +
'borderTopColor borderTopStyle borderTopWidth bottom clip color ' +
'fontSize fontWeight height left letterSpacing lineHeight ' +
'marginBottom marginLeft marginRight marginTop markerOffset maxHeight '+
'maxWidth minHeight minWidth opacity outlineColor outlineOffset ' +
'outlineWidth paddingBottom paddingLeft paddingRight paddingTop ' +
'right textIndent top width wordSpacing zIndex');

Element.CSS_LENGTH = /^(([\+\-]?[0-9\.]+)(em|ex|px|in|cm|mm|pt|pc|\%))|0$/;

String.__parseStyleElement = document.createElement('div');
String.prototype.parseStyle = function(){
var style, styleRules = $H();
if (Prototype.Browser.WebKit)
 style = new Element('div',{style:this}).style;
else {
 String.__parseStyleElement.innerHTML = '<div style="' + this + '"></div>';
 style = String.__parseStyleElement.childNodes[0].style;
}

Element.CSS_PROPERTIES.each(function(property){
 if (style[property]) styleRules.set(property, style[property]); 
});

if (Prototype.Browser.IE && this.include('opacity'))
 styleRules.set('opacity', this.match(/opacity:\s*((?:0|1)?(?:\.\d*)?)/)[1]);

return styleRules;
};

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

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

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

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

Element.addMethods(Effect.Methods);