if(!this.element) throw(Effect._elementDoesNotExistError);    // make this work on IE on elements without 'layout'    if(/MSIE/.test(navigator.userAgent) && !window.opera && (!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();Object.extend(Object.extend(Effect.Move.prototype, Effect.Base.prototype), {  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() {    // 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)     this.element.makePositioned();    this.originalLeft = parseFloat(this.element.getStyle('left') || '0');    this.originalTop  = parseFloat(this.element.getStyle('top')  || '0');    if(this.options.mode == 'absolute') {      // absolute movement, so we need to calc deltaX and deltaY      this.options.x = this.options.x - this.originalLeft;      this.options.y = this.options.y - this.originalTop;    }  },  update: function(position) {    this.element.setStyle({      left: Math.round(this.options.x  * position + this.originalLeft) + 'px',      top:  Math.round(this.options.y  * position + this.originalTop)  + 'px'    });  }});// for backwards compatibilityEffect.MoveBy = function(element, toTop, toLeft) {  return new Effect.Move(element,     Object.extend({ x: toLeft, y: toTop }, arguments[3] || {}));};Effect.Scale = Class.create();Object.extend(Object.extend(Effect.Scale.prototype, Effect.Base.prototype), {  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 = Math.round(width) + 'px';    if(this.options.scaleY) d.height = Math.round(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) 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();Object.extend(Object.extend(Effect.Highlight.prototype, Effect.Base.prototype), {  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+(Math.round(this._base[i]+(this._delta[i]*position)).toColorPart()); }.bind(this)) });  },  finish: function() {    this.element.setStyle(Object.extend(this.oldStyle, {      backgroundColor: this.options.restorecolor    }));  }});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);    if(this.options.offset) offsets[1] += this.options.offset;    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) {  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 oldStyle = {    top: element.getStyle('top'),    left: element.getStyle('left') };    return new Effect.Move(element,       { x:  20, y: 0, duration: 0.05, afterFinishInternal: function(effect) {    new Effect.Move(effect.element,      { x: -40, y: 0, duration: 0.1,  afterFinishInternal: function(effect) {    new Effect.Move(effect.element,      { x:  40, y: 0, duration: 0.1,  afterFinishInternal: function(effect) {    new Effect.Move(effect.element,      { x: -40, y: 0, duration: 0.1,  afterFinishInternal: function(effect) {    new Effect.Move(effect.element,      { x:  40, y: 0, duration: 0.1,  afterFinishInternal: function(effect) {    new Effect.Move(effect.element,      { x: -20, y: 0, duration: 0.05, 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] || {})  );