// Copyright (c) 2005 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)

// Contributors:

//  Justin Palmer (http://encytemedia.com/)

//  Mark Pilgrim (http://diveintomark.org/)

//  Martin Bialasinki

// 

// See scriptaculous.js for full license.  



/* ------------- element ext -------------- */  

 

// converts rgb() and #xxx to #xxxxxx format,  

// returns self (or first argument) if not convertable  

String.prototype.parseColor = function() {  

  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.collectTextNodesIgnoreClass = function(element, ignoreclass) {  

  var children = $(element).childNodes;  

  var text     = "";  

  var classtest = new RegExp("^([^ ]+ )*" + ignoreclass+ "( [^ ]+)*$","i");  

 

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

    if(children[i].nodeType==3) {  

      text+=children[i].nodeValue;  

    } else {  

      if((!children[i].className.match(classtest)) && children[i].hasChildNodes())  

        text += Element.collectTextNodesIgnoreClass(children[i], ignoreclass);  

    }  

  }  

 

  return text;

}



Element.setContentZoom = function(element, percent) {  

  element = $(element);  

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

  if(navigator.appVersion.indexOf('AppleWebKit')>0) window.scrollBy(0,0);  

}



Element.getOpacity = function(element){  

  var opacity;  

  if (opacity = Element.getStyle(element, "opacity"))  

    return parseFloat(opacity);  

  if (opacity = (Element.getStyle(element, "filter") || '').match(/alpha\(opacity=(.*)\)/))  

    if(opacity[1]) return parseFloat(opacity[1]) / 100;  

  return 1.0;  

}



Element.setOpacity = function(element, value){  

  element= $(element);  

  var els = element.style;  

  if (value == 1){  

    els.opacity = '0.999999';  

    if(/MSIE/.test(navigator.userAgent))  

      els.filter = Element.getStyle(element,'filter').replace(/alpha\([^\)]*\)/gi,'');  

  } else {  

    if(value < 0.00001) value = 0;  

    els.opacity = value;  

    if(/MSIE/.test(navigator.userAgent))  

      els.filter = Element.getStyle(element,'filter').replace(/alpha\([^\)]*\)/gi,'') +  

        "alpha(opacity="+value*100+")";  

  }   

}  

 

Element.getInlineOpacity = function(element){  

  element= $(element);  

  var op;  

  op = element.style.opacity;  

  if (typeof op != "undefined" && op != "") return op;  

  return "";  

}  

 

Element.setInlineOpacity = function(element, value){  

  element= $(element);  

  var els = element.style;  

  els.opacity = value;  

}  

 

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

 

Element.Class = {  

    // Element.toggleClass(element, className) toggles the class being on/off  

    // Element.toggleClass(element, className1, className2) toggles between both classes,  

    //   defaulting to className1 if neither exist  

    toggle: function(element, className) {  

      if(Element.Class.has(element, className)) {  

        Element.Class.remove(element, className);  

        if(arguments.length == 3) Element.Class.add(element, arguments[2]);  

      } else {  

        Element.Class.add(element, className);  

        if(arguments.length == 3) Element.Class.remove(element, arguments[2]);  

      }  

    },  

 

    // gets space-delimited classnames of an element as an array  

    get: function(element) {  

      return $(element).className.split(' ');  

    },  

 

    // functions adapted from original functions by Gavin Kistner  

    remove: function(element) {  

      element = $(element);  

      var removeClasses = arguments;  

      $R(1,arguments.length-1).each( function(index) {  

        element.className =  

          element.className.split(' ').reject(  

            function(klass) { return (klass == removeClasses[index]) } ).join(' ');  

      });  

    },  

 

    add: function(element) {  

      element = $(element);  

      for(var i = 1; i < arguments.length; i++) {  

        Element.Class.remove(element, arguments[i]);  

        element.className += (element.className.length > 0 ? ' ' : '') + arguments[i];  

      }  

    },  

 

    // returns true if all given classes exist in said element  

    has: function(element) {  

      element = $(element);  

      if(!element || !element.className) return false;  

      var regEx;  

      for(var i = 1; i < arguments.length; i++) {  

        if((typeof arguments[i] == 'object') &&  

          (arguments[i].constructor == Array)) {  

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

            regEx = new RegExp("(^|\\s)" + arguments[i][j] + "(\\s|$)");  

            if(!regEx.test(element.className)) return false;  

          }  

        } else {  

          regEx = new RegExp("(^|\\s)" + arguments[i] + "(\\s|$)");  

          if(!regEx.test(element.className)) return false;  

        }  

      }  

      return true;  

    },  

 

    // expects arrays of strings and/or strings as optional paramters  

    // Element.Class.has_any(element, ['classA','classB','classC'], 'classD')  

    has_any: function(element) {  

      element = $(element);  

      if(!element || !element.className) return false;  

      var regEx;  

      for(var i = 1; i < arguments.length; i++) {  

        if((typeof arguments[i] == 'object') &&  

          (arguments[i].constructor == Array)) {  

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

            regEx = new RegExp("(^|\\s)" + arguments[i][j] + "(\\s|$)");  

            if(regEx.test(element.className)) return true;  

          }  

        } else {  

          regEx = new RegExp("(^|\\s)" + arguments[i] + "(\\s|$)");  

          if(regEx.test(element.className)) return true;  

        }  

      }  

      return false;  

    },  

 

    childrenWith: function(element, className) {  

      var children = $(element).getElementsByTagName('*');  

      var elements = new Array();  

 

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

        if (Element.Class.has(children[i], className))  

          elements.push(children[i]);  

 

      return elements;  

    }  

}  

 

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



var Effect = {

  tagifyText: function(element) {

    var tagifyStyle = "position:relative";

    if(/MSIE/.test(navigator.userAgent)) tagifyStyle += ";zoom:1";

    element = $(element);

    $A(element.childNodes).each( function(child) {

      if(child.nodeType==3) {

        child.nodeValue.toArray().each( function(character) {

          element.insertBefore(

            Builder.node('span',{style: tagifyStyle},

              character == " " ? String.fromCharCode(160) : character), 

              child);

        });

        Element.remove(child);

      }

    });

  },

  multiple: function(element, effect) {

    var elements;

    if(((typeof element == 'object') || 

        (typeof element == 'function')) && 

       (element.length))

      elements = element;

    else

      elements = $(element).childNodes;

      

    var options = Object.extend({

      speed: 0.1,

      delay: 0.0

    }, arguments[2] || {});

    var speed = options.speed;

    var delay = options.delay;



    $A(elements).each( function(element, index) {

      new effect(element, Object.extend(options, { delay: delay + index * speed }));

    });

  }

};



var Effect2 = Effect; // deprecated



/* ------------- transitions ------------- */



Effect.Transitions = {}



Effect.Transitions.linear = function(pos) {

  return pos;

}

Effect.Transitions.sinoidal = function(pos) {

  return (-Math.cos(pos*Math.PI)/2) + 0.5;

}

Effect.Transitions.reverse  = function(pos) {

  return 1-pos;

}

Effect.Transitions.flicker = function(pos) {

  return ((-Math.cos(pos*Math.PI)/4) + 0.75) + Math.random()/4;

}

Effect.Transitions.wobble = function(pos) {

  return (-Math.cos(pos*Math.PI*(9*pos))/2) + 0.5;

}

Effect.Transitions.pulse = function(pos) {

  return (Math.floor(pos*10) % 2 == 0 ? 

    (pos*10-Math.floor(pos*10)) : 1-(pos*10-Math.floor(pos*10)));

}

Effect.Transitions.none = function(pos) {

  return 0;

}

Effect.Transitions.full = function(pos) {

  return 1;

}



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



Effect.Queue = {

  effects:  [],

  _each: function(iterator) {

    this.effects._each(iterator);

  },

  interval: null,

  add: function(effect) {

    var timestamp = new Date().getTime();

    

    switch(effect.options.queue) {

      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 'end':

        // start effect after last queued effect has finished

        timestamp = this.effects.pluck('finishOn').max() || timestamp;

        break;

    }

    

    effect.startOn  += timestamp;

    effect.finishOn += timestamp;

    this.effects.push(effect);

    if(!this.interval) 

      this.interval = setInterval(this.loop.bind(this), 40);

  },

  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();

    this.effects.invoke('loop', timePos);

  }

}

Object.extend(Effect.Queue, Enumerable);



Effect.Base = function() {};

Effect.Base.prototype = {

  position: null,

  setOptions: function(options) {

    this.options = Object.extend({

      transition: Effect.Transitions.sinoidal,

      duration:   1.0,   // seconds

      fps:        25.0,  // max. 25fps due to Effect.Queue implementation

      sync:       false, // true for combining

      from:       0.0,

      to:         1.0,

      delay:      0.0,

      queue:      'parallel'

    }, options || {});

  },

  start: function(options) {

    this.setOptions(options || {});

    this.currentFrame = 0;

    this.state        = 'idle';

    this.startOn      = this.options.delay*1000;

    this.finishOn     = this.startOn + (this.options.duration*1000);

    this.event('beforeStart');

    if(!this.options.sync) Effect.Queue.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.finishOn - this.startOn);

      var frame = Math.round(pos * this.options.fps * this.options.duration);

      if(frame > this.currentFrame) {

        this.render(pos);

        this.currentFrame = frame;

      }

    }

  },

  render: function(pos) {

    if(this.state == 'idle') {

      this.state = 'running';

      this.event('beforeSetup');

      if(this.setup) this.setup();

      this.event('afterSetup');

    }

    if(this.options.transition) pos = this.options.transition(pos);

    pos *= (this.options.to-this.options.from);

    pos += this.options.from;

    this.position = pos;

    this.event('beforeUpdate');

    if(this.update) this.update(pos);

    this.event('afterUpdate');

  },

  cancel: function() {

    if(!this.options.sync) Effect.Queue.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);

  }

}



Effect.Parallel = Class.create();

Object.extend(Object.extend(Effect.Parallel.prototype, Effect.Base.prototype), {

  initialize: function(effects) {

    this.effects = effects || [];

    this.start(arguments[1]);

  },

  update: function(position) {

    this.effects.invoke('render', position);

  },

  finish: function(position) {

    this.effects.each( function(effect) {

      effect.render(1.0);

      effect.cancel();

      effect.event('beforeFinish');

      if(effect.finish) effect.finish(position);

      effect.event('afterFinish');

    });

  }

});



Effect.Opacity = Class.create();

Object.extend(Object.extend(Effect.Opacity.prototype, Effect.Base.prototype), {

  initialize: function(element) {

    this.element = $(element);

    // make this work on IE on elements without 'layout'

    if(/MSIE/.test(navigator.userAgent) && (!this.element.hasLayout))

      this.element.style.zoom = 1;

    var options = Object.extend({

      from: Element.getOpacity(this.element) || 0.0,

      to:   1.0

    }, arguments[1] || {});

    this.start(options);

  },

  update: function(position) {

    Element.setOpacity(this.element, position);

  }

});



Effect.MoveBy = Class.create();

Object.extend(Object.extend(Effect.MoveBy.prototype, Effect.Base.prototype), {

  initialize: function(element, toTop, toLeft) {

    this.element      = $(element);

    this.toTop        = toTop;

    this.toLeft       = toLeft;

    this.start(arguments[3]);

  },

  setup: function() {

    // Bug in Opera: Opera returns the "real" position of a static element or

    // relative element that does not have top/left explicitly set.

    // ==> Always set top and left for position relative elements in your stylesheets 

    // (to 0 if you do not need them)

    

    Element.makePositioned(this.element);

    this.originalTop  = parseFloat(Element.getStyle(this.element,'top')  || '0');

    this.originalLeft = parseFloat(Element.getStyle(this.element,'left') || '0');

  },

  update: function(position) {

    var topd  = this.toTop  * position + this.originalTop;

    var leftd = this.toLeft * position + this.originalLeft;

    this.setPosition(topd, leftd);

  },

  setPosition: function(topd, leftd) {

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

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

  }

});



Effect.Scale = Class.create();

Object.extend(Object.extend(Effect.Scale.prototype, Effect.Base.prototype), {

  initialize: function(element, percent) {

    this.element = $(element)

    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() {

    var effect = this;

    

    this.restoreAfterFinish = this.options.restoreAfterFinish || false;

    this.elementPositioning = Element.getStyle(this.element,'position');

    

    effect.originalStyle = {};

    ['top','left','width','height','fontSize'].each( function(k) {

      effect.originalStyle[k] = effect.element.style[k];

    });

      

    this.originalTop  = this.element.offsetTop;

    this.originalLeft = this.element.offsetLeft;

    

    var fontSize = Element.getStyle(this.element,'font-size') || "100%";

    ['em','px','%'].each( function(fontSizeType) {

      if(fontSize.indexOf(fontSizeType)>0) {

        effect.fontSize     = parseFloat(fontSize);

        effect.fontSizeType = fontSizeType;

      }

    });

    

    this.factor = (this.options.scaleTo - this.options.scaleFrom)/100;

    

    this.dims = null;

    if(this.options.scaleMode=='box')

      this.dims = [this.element.clientHeight, this.element.clientWidth];

    if(this.options.scaleMode=='content')

      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.style.fontSize = this.fontSize*currentScale + this.fontSizeType;

    this.setDimensions(this.dims[0] * currentScale, this.dims[1] * currentScale);

  },

  finish: function(position) {

    if (this.restoreAfterFinish) {

      var effect = this;

      ['top','left','width','height','fontSize'].each( function(k) {

        effect.element.style[k] = effect.originalStyle[k];

      });

    }

  },

  setDimensions: function(height, width) {

    var els = this.element.style;

    if(this.options.scaleX) els.width = width + 'px';

    if(this.options.scaleY) els.height = height + 'px';

    if(this.options.scaleFromCenter) {

      var topd  = (height - this.dims[0])/2;

      var leftd = (width  - this.dims[1])/2;

      if(this.elementPositioning == 'absolute') {

        if(this.options.scaleY) els.top = this.originalTop-topd + "px";

        if(this.options.scaleX) els.left = this.originalLeft-leftd + "px";

      } else {

        if(this.options.scaleY) els.top = -topd + "px";

        if(this.options.scaleX) els.left = -leftd + "px";

      }

    }

  }

});



Effect.Highlight = Class.create();

Object.extend(Object.extend(Effect.Highlight.prototype, Effect.Base.prototype), {

  initialize: function(element) {

    this.element = $(element);

    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.style.display=='none') { this.cancel(); return; }

    // Disable background image during the effect

    this.oldBgImage = this.element.style.backgroundImage;

    this.element.style.backgroundImage = "none";

    if(!this.options.endcolor)

      this.options.endcolor = Element.getStyle(this.element, 'background-color').parseColor('#ffffff');

    if (typeof this.options.restorecolor == "undefined")

      this.options.restorecolor = this.element.style.backgroundColor;

    // init color calculations

    this.colors_base = [

      parseInt(this.options.startcolor.slice(1,3),16),

      parseInt(this.options.startcolor.slice(3,5),16),

      parseInt(this.options.startcolor.slice(5),16) ];

    this.colors_delta = [

      parseInt(this.options.endcolor.slice(1,3),16)-this.colors_base[0],

      parseInt(this.options.endcolor.slice(3,5),16)-this.colors_base[1],

      parseInt(this.options.endcolor.slice(5),16)-this.colors_base[2]];

  },

  update: function(position) {

    var effect = this; var colors = $R(0,2).map( function(i){ 

      return Math.round(effect.colors_base[i]+(effect.colors_delta[i]*position))

    });

    this.element.style.backgroundColor = "#" +

      colors[0].toColorPart() + colors[1].toColorPart() + colors[2].toColorPart();

  },

  finish: function() {

    this.element.style.backgroundColor = this.options.restorecolor;

    this.element.style.backgroundImage = this.oldBgImage;

  }

});



Effect.ScrollTo = Class.create();

Object.extend(Object.extend(Effect.ScrollTo.prototype, Effect.Base.prototype), {

  initialize: function(element) {

    this.element = $(element);

    this.start(arguments[1] || {});

  },

  setup: function() {

    Position.prepare();

    var offsets = Position.cumulativeOffset(this.element);

    var max = window.innerHeight ? 

      window.height - window.innerHeight :

      document.body.scrollHeight - 

        (document.documentElement.clientHeight ? 

          document.documentElement.clientHeight : document.body.clientHeight);

    this.scrollStart = Position.deltaY;

    this.delta = (offsets[1] > max ? max : offsets[1]) - this.scrollStart;

  },

  update: function(position) {

    Position.prepare();

    window.scrollTo(Position.deltaX, 

      this.scrollStart + (position*this.delta));

  }

});



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



Effect.Fade = function(element) {

  var oldOpacity = Element.getInlineOpacity(element);

  var options = Object.extend({

  from: Element.getOpacity(element) || 1.0,

  to:   0.0,

  afterFinishInternal: function(effect) 

    { if (effect.options.to == 0) {

        Element.hide(effect.element);

        Element.setInlineOpacity(effect.element, oldOpacity);

      }  

    }

  }, arguments[1] || {});

  return new Effect.Opacity(element,options);

}



Effect.Appear = function(element) {

  var options = Object.extend({

  from: (Element.getStyle(element, "display") == "none" ? 0.0 : Element.getOpacity(element) || 0.0),

  to:   1.0,

  beforeSetup: function(effect)  

    { Element.setOpacity(effect.element, effect.options.from);

      Element.show(effect.element); }

  }, arguments[1] || {});

  return new Effect.Opacity(element,options);

}



Effect.Puff = function(element) {

  element = $(element);

  var oldOpacity = Element.getInlineOpacity(element);

  var oldPosition = element.style.position;

  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) 

       { effect.effects[0].element.style.position = 'absolute'; },

      afterFinishInternal: function(effect)

       { Element.hide(effect.effects[0].element);

         effect.effects[0].element.style.position = oldPosition;

         Element.setInlineOpacity(effect.effects[0].element, oldOpacity); }

     }, arguments[1] || {})

   );

}



Effect.BlindUp = function(element) {

  element = $(element);

  Element.makeClipping(element);

  return new Effect.Scale(element, 0, 

    Object.extend({ scaleContent: false, 

      scaleX: false, 

      restoreAfterFinish: true,

      afterFinishInternal: function(effect)

        { 

          Element.hide(effect.element);

          Element.undoClipping(effect.element);

        } 

    }, arguments[1] || {})

  );

}



Effect.BlindDown = function(element) {

  element = $(element);

  var oldHeight = element.style.height;

  var elementDimensions = Element.getDimensions(element);

  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) {

        Element.makeClipping(effect.element);

        effect.element.style.height = "0px";

        Element.show(effect.element); 

      },  

      afterFinishInternal: function(effect) {

        Element.undoClipping(effect.element);

        effect.element.style.height = oldHeight;

      }

    }, arguments[1] || {})

  );

}



Effect.SwitchOff = function(element) {

  element = $(element);

  var oldOpacity = Element.getInlineOpacity(element);

  return new Effect.Appear(element, { 

    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) { 

          Element.makePositioned(effect.element); 

          Element.makeClipping(effect.element);

        },

        afterFinishInternal: function(effect) { 

          Element.hide(effect.element); 

          Element.undoClipping(effect.element);

          Element.undoPositioned(effect.element);

          Element.setInlineOpacity(effect.element, oldOpacity);

        }

      })

    }

  });

}



Effect.DropOut = function(element) {

  element = $(element);

  var oldTop = element.style.top;

  var oldLeft = element.style.left;

  var oldOpacity = Element.getInlineOpacity(element);

  return new Effect.Parallel(

    [ new Effect.MoveBy(element, 100, 0, { sync: true }), 

      new Effect.Opacity(element, { sync: true, to: 0.0 }) ],

    Object.extend(

      { duration: 0.5,

        beforeSetup: function(effect) { 

          Element.makePositioned(effect.effects[0].element); },

        afterFinishInternal: function(effect) { 

          Element.hide(effect.effects[0].element); 

          Element.undoPositioned(effect.effects[0].element);

          effect.effects[0].element.style.left = oldLeft;

          effect.effects[0].element.style.top = oldTop;

          Element.setInlineOpacity(effect.effects[0].element, oldOpacity); } 

      }, arguments[1] || {}));

}



Effect.Shake = function(element) {

  element = $(element);

  var oldTop = element.style.top;

  var oldLeft = element.style.left;

  return new Effect.MoveBy(element, 0, 20, 

    { duration: 0.05, afterFinishInternal: function(effect) {

  new Effect.MoveBy(effect.element, 0, -40, 

    { duration: 0.1, afterFinishInternal: function(effect) {

  new Effect.MoveBy(effect.element, 0, 40, 

    { duration: 0.1, afterFinishInternal: function(effect) {

  new Effect.MoveBy(effect.element, 0, -40, 

    { duration: 0.1, afterFinishInternal: function(effect) {

  new Effect.MoveBy(effect.element, 0, 40, 

    { duration: 0.1, afterFinishInternal: function(effect) {

  new Effect.MoveBy(effect.element, 0, -20, 

    { duration: 0.05, afterFinishInternal: function(effect) {

        Element.undoPositioned(effect.element);

        effect.element.style.left = oldLeft;

        effect.element.style.top = oldTop;

  }}) }}) }}) }}) }}) }});

}



Effect.SlideDown = function(element) {

  element = $(element);

  Element.cleanWhitespace(element);

  // SlideDown need to have the content of the element wrapped in a container element with fixed height!

  var oldInnerBottom = element.firstChild.style.bottom;

  var elementDimensions = Element.getDimensions(element);

  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) {

      Element.makePositioned(effect.element.firstChild);

      if (window.opera) effect.element.firstChild.style.top = "";

      Element.makeClipping(effect.element);

      element.style.height = '0';

      Element.show(element); 

    },  

    afterUpdateInternal: function(effect) { 

      effect.element.firstChild.style.bottom = 

        (effect.dims[0] - effect.element.clientHeight) + 'px'; },

    afterFinishInternal: function(effect) { 

      Element.undoClipping(effect.element); 

      Element.undoPositioned(effect.element.firstChild);

      effect.element.firstChild.style.bottom = oldInnerBottom; }

    }, arguments[1] || {})

  );

}

  

Effect.SlideUp = function(element) {

  element = $(element);

  Element.cleanWhitespace(element);

  var oldInnerBottom = element.firstChild.style.bottom;

  return new Effect.Scale(element, 0, 

   Object.extend({ scaleContent: false, 

    scaleX: false, 

    scaleMode: 'box',

    scaleFrom: 100,

    restoreAfterFinish: true,

    beforeStartInternal: function(effect) { 

      Element.makePositioned(effect.element.firstChild);

      if (window.opera) effect.element.firstChild.style.top = "";

      Element.makeClipping(effect.element);

      Element.show(element); 

    },  

    afterUpdateInternal: function(effect) { 

     effect.element.firstChild.style.bottom = 

       (effect.dims[0] - effect.element.clientHeight) + 'px'; },

    afterFinishInternal: function(effect) { 

        Element.hide(effect.element);

        Element.undoClipping(effect.element); 

        Element.undoPositioned(effect.element.firstChild);

        effect.element.firstChild.style.bottom = oldInnerBottom; }

   }, arguments[1] || {})

  );

}



Effect.Squish = function(element) {

  // Bug in opera makes the TD containing this element expand for a instance after finish 

  return new Effect.Scale(element, window.opera ? 1 : 0, 

    { restoreAfterFinish: true,

      beforeSetup: function(effect) { 

        Element.makeClipping(effect.element); },  

      afterFinishInternal: function(effect) { 

        Element.hide(effect.element); 

        Element.undoClipping(effect.element); } 

  });

}



Effect.Grow = function(element) {

  element = $(element);

  var options = arguments[1] || {};

  

  var elementDimensions = Element.getDimensions(element);

  var originalWidth = elementDimensions.width;

  var originalHeight = elementDimensions.height;

  var oldTop = element.style.top;

  var oldLeft = element.style.left;

  var oldHeight = element.style.height;

  var oldWidth = element.style.width;

  var oldOpacity = Element.getInlineOpacity(element);

  

  var direction = options.direction || 'center';

  var moveTransition = options.moveTransition || Effect.Transitions.sinoidal;

  var scaleTransition = options.scaleTransition || Effect.Transitions.sinoidal;

  var opacityTransition = options.opacityTransition || Effect.Transitions.full;

  

  var initialMoveX, initialMoveY;

  var moveX, moveY;

  

  switch (direction) {

    case 'top-left':

      initialMoveX = initialMoveY = moveX = moveY = 0; 

      break;

    case 'top-right':

      initialMoveX = originalWidth;

      initialMoveY = moveY = 0;

      moveX = -originalWidth;

      break;

    case 'bottom-left':

      initialMoveX = moveX = 0;

      initialMoveY = originalHeight;

      moveY = -originalHeight;

      break;

    case 'bottom-right':

      initialMoveX = originalWidth;

      initialMoveY = originalHeight;

      moveX = -originalWidth;

      moveY = -originalHeight;

      break;

    case 'center':

      initialMoveX = originalWidth / 2;

      initialMoveY = originalHeight / 2;

      moveX = -originalWidth / 2;

      moveY = -originalHeight / 2;

      break;

  }

  

  return new Effect.MoveBy(element, initialMoveY, initialMoveX, { 

    duration: 0.01, 

    beforeSetup: function(effect) { 

      Element.hide(effect.element);

      Element.makeClipping(effect.element);

      Element.makePositioned(effect.element);

    },

    afterFinishInternal: function(effect) {

      new Effect.Parallel(

        [ new Effect.Opacity(effect.element, { sync: true, to: 1.0, from: 0.0, transition: opacityTransition }),

          new Effect.MoveBy(effect.element, moveY, moveX, { sync: true, transition: moveTransition }),

          new Effect.Scale(effect.element, 100, {

            scaleMode: { originalHeight: originalHeight, originalWidth: originalWidth }, 

            sync: true, scaleFrom: window.opera ? 1 : 0, transition: scaleTransition, restoreAfterFinish: true})

        ], Object.extend({

             beforeSetup: function(effect) {

              effect.effects[0].element.style.height = 0;

              Element.show(effect.effects[0].element);

             },              

             afterFinishInternal: function(effect) {

               var el = effect.effects[0].element;

               var els = el.style;

               Element.undoClipping(el); 

               Element.undoPositioned(el);

               els.top = oldTop;

               els.left = oldLeft;

               els.height = oldHeight;

               els.width = originalWidth + 'px';
               Element.setInlineOpacity(el, oldOpacity);

             }

           }, options)

      )

    }

  });

}



Effect.Shrink = function(element) {

  element = $(element);

  var options = arguments[1] || {};

  

  var originalWidth = element.clientWidth;

  var originalHeight = element.clientHeight;

  var oldTop = element.style.top;

  var oldLeft = element.style.left;

  var oldHeight = element.style.height;

  var oldWidth = element.style.width;

  var oldOpacity = Element.getInlineOpacity(element);



  var direction = options.direction || 'center';

  var moveTransition = options.moveTransition || Effect.Transitions.sinoidal;

  var scaleTransition = options.scaleTransition || Effect.Transitions.sinoidal;

  var opacityTransition = options.opacityTransition || Effect.Transitions.none;

  

  var moveX, moveY;

  

  switch (direction) {

    case 'top-left':

      moveX = moveY = 0;

      break;

    case 'top-right':

      moveX = originalWidth;

      moveY = 0;

      break;

    case 'bottom-left':

      moveX = 0;

      moveY = originalHeight;

      break;

    case 'bottom-right':

      moveX = originalWidth;

      moveY = originalHeight;

      break;

    case 'center':  

      moveX = originalWidth / 2;

      moveY = originalHeight / 2;

      break;

  }

  

  return new Effect.Parallel(

    [ new Effect.Opacity(element, { sync: true, to: 0.0, from: 1.0, transition: opacityTransition }),

      new Effect.Scale(element, window.opera ? 1 : 0, { sync: true, transition: scaleTransition, restoreAfterFinish: true}),

      new Effect.MoveBy(element, moveY, moveX, { sync: true, transition: moveTransition })

    ], Object.extend({            

         beforeStartInternal: function(effect) { 

           Element.makePositioned(effect.effects[0].element);

           Element.makeClipping(effect.effects[0].element);

         },

         afterFinishInternal: function(effect) {

           var el = effect.effects[0].element;

           var els = el.style;

           Element.hide(el);

           Element.undoClipping(el); 

           Element.undoPositioned(el);

           els.top = oldTop;

           els.left = oldLeft;

           els.height = oldHeight;

           els.width = oldWidth;

           Element.setInlineOpacity(el, oldOpacity);

         }

       }, options)

  );

}



Effect.Pulsate = function(element) {

  element = $(element);

  var options    = arguments[1] || {};

  var oldOpacity = Element.getInlineOpacity(element);

  var transition = options.transition || Effect.Transitions.sinoidal;

  var reverser   = function(pos){ return transition(1-Effect.Transitions.pulse(pos)) };

  reverser.bind(transition);

  return new Effect.Opacity(element, 

    Object.extend(Object.extend({  duration: 3.0, from: 0,

      afterFinishInternal: function(effect) { Element.setInlineOpacity(effect.element, oldOpacity); }

    }, options), {transition: reverser}));

}



Effect.Fold = function(element) {

  element = $(element);

  var originalTop = element.style.top;

  var originalLeft = element.style.left;

  var originalWidth = element.style.width;

  var originalHeight = element.style.height;

  Element.makeClipping(element);

  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) { 

        Element.hide(effect.element);  

        Element.undoClipping(effect.element); 

        effect.element.style.top = originalTop;

        effect.element.style.left = originalLeft;

        effect.element.style.width = originalWidth;

        effect.element.style.height = originalHeight;

      } });

  }}, arguments[1] || {}));

}