/*  Prototype-UI, version trunk
 *
 *  Prototype-UI is freely distributable under the terms of an MIT-style license.
 *  For details, see the PrototypeUI web site: http://www.prototype-ui.com/
 *
 *--------------------------------------------------------------------------*/
if(Prototype.Browser.WebKit){Prototype.Browser.WebKitVersion=parseFloat(navigator.userAgent.match(/AppleWebKit\/([\d\.\+]*)/)[1]);Prototype.Browser.Safari2=(Prototype.Browser.WebKitVersion<420);}if(Prototype.Browser.IE){Prototype.Browser.IEVersion=parseFloat(navigator.appVersion.split(";")[1].strip().split(" ")[1]);Prototype.Browser.IE6=Prototype.Browser.IEVersion==6;Prototype.Browser.IE7=Prototype.Browser.IEVersion==7;}Prototype.falseFunction=function(){return false;};Prototype.trueFunction=function(){return true;};var UI;if(typeof UI=="undefined"){UI={};}UI.Abstract={};UI.Ajax={};Object.extend(Class.Methods,{extend:Object.extend.methodize(),addMethods:Class.Methods.addMethods.wrap(function(a,b){if(!b){return this;}if(!b.hasOwnProperty("methodsAdded")){return a(b);}var c=b.methodsAdded;delete b.methodsAdded;a(b);c.call(b,this);b.methodsAdded=c;return this;}),addMethod:function(c,b){var a={};a[c]=b;return this.addMethods(a);},method:function(a){return this.prototype[a].valueOf();},classMethod:function(){$A(arguments).flatten().each(function(a){this[a]=(function(){return this[a].apply(this,arguments);}).bind(this.prototype);},this);return this;},undefMethod:function(a){this.prototype[a]=undefined;return this;},removeMethod:function(a){delete this.prototype[a];return this;},aliasMethod:function(a,b){this.prototype[a]=this.prototype[b];return this;},aliasMethodChain:function(b,a){a=a.camelcase();this.aliasMethod(b+"Without"+a,b);this.aliasMethod(b,b+"With"+a);return this;}});Object.extend(Number.prototype,{snap:function(a){return parseInt(a==1?this:(this/a).floor()*a);}});Object.extend(String.prototype,{camelcase:function(){var a=this.dasherize().camelize();return a.charAt(0).toUpperCase()+a.slice(1);},makeElement:function(){var a=new Element("div");a.innerHTML=this;return a.down();}});Object.extend(Array.prototype,{empty:function(){return !this.length;},extractOptions:function(){return this.last().constructor===Object?this.pop():{};},removeAt:function(b){var a=this[b];this.splice(b,1);return a;},remove:function(b){var a;while((a=this.indexOf(b))!=-1){this.removeAt(a);}return b;},insert:function(b){var a=$A(arguments);a.shift();this.splice.apply(this,[b,0].concat(a));return this;}});Element.addMethods({getScrollDimensions:function(a){return{width:a.scrollWidth,height:a.scrollHeight};},getScrollOffset:function(a){return Element._returnOffset(a.scrollLeft,a.scrollTop);},setScrollOffset:function(a,b){a=$(a);if(arguments.length==3){b={left:b,top:arguments[2]};}a.scrollLeft=b.left;a.scrollTop=b.top;return a;},getNumStyle:function(a,b){var c=parseFloat($(a).getStyle(b));return isNaN(c)?null:c;},appendText:function(a,b){a=$(a);b=String.interpret(b);a.appendChild(document.createTextNode(b));return a;}});document.whenReady=function(a){if(document.loaded){a.call(document);}else{document.observe("dom:loaded",a);}};Object.extend(document.viewport,{getScrollOffset:document.viewport.getScrollOffsets,setScrollOffset:function(a){Element.setScrollOffset(Prototype.Browser.WebKit?document.body:document.documentElement,a);},getScrollDimensions:function(){return Element.getScrollDimensions(Prototype.Browser.WebKit?document.body:document.documentElement);}});(function(){UI.Options={methodsAdded:function(b){b.classMethod($w(" setOptions allOptions optionsGetter optionsSetter optionsAccessor "));},setOptions:function(b){if(!this.hasOwnProperty("options")){this.options=this.allOptions();}this.options=Object.extend(this.options,b||{});},allOptions:function(){var c=this.constructor.superclass,b=c&&c.prototype;return(b&&b.allOptions)?Object.extend(b.allOptions(),this.options):Object.clone(this.options);},optionsGetter:function(){a(this,arguments,false);},optionsSetter:function(){a(this,arguments,true);},optionsAccessor:function(){this.optionsGetter.apply(this,arguments);this.optionsSetter.apply(this,arguments);}};function a(c,d,b){d=$A(d).flatten();if(d.empty()){d=Object.keys(c.allOptions());}d.each(function(f){var e=(b?"set":"get")+f.camelcase();c[e]=c[e]||(b?function(g){return this.options[f]=g;}:function(){return this.options[f];});});}})();UI.Carousel=Class.create(UI.Options,{options:{direction:"horizontal",previousButton:".previous_button",nextButton:".next_button",container:".container",scrollInc:"auto",disabledButtonSuffix:"_disabled",overButtonSuffix:"_over"},initialize:function(b,a){this.setOptions(a);this.element=$(b);this.id=this.element.id;this.container=this.element.down(this.options.container).firstDescendant();this.elements=this.container.childElements();this.previousButton=this.options.previousButton==false?null:this.element.down(this.options.previousButton);this.nextButton=this.options.nextButton==false?null:this.element.down(this.options.nextButton);this.posAttribute=(this.options.direction=="horizontal"?"left":"top");this.dimAttribute=(this.options.direction=="horizontal"?"width":"height");this.elementSize=this.computeElementSize();this.nbVisible=this.currentSize()/this.elementSize;var c=this.options.scrollInc;if(c=="auto"){c=Math.floor(this.nbVisible);}[this.previousButton,this.nextButton].each(function(d){if(!d){return;}var e=(d==this.nextButton?"next_button":"previous_button")+this.options.overButtonSuffix;d.clickHandler=this.scroll.bind(this,(d==this.nextButton?-1:1)*c*this.elementSize);d.observe("click",d.clickHandler).observe("mouseover",function(){d.addClassName(e);}.bind(this)).observe("mouseout",function(){d.removeClassName(e);}.bind(this));},this);this.updateButtons();},destroy:function($super){[this.previousButton,this.nextButton].each(function(a){if(!a){return;}a.stopObserving("click",a.clickHandler);},this);this.element.remove();this.fire("destroyed");},fire:function(b,a){a=a||{};a.carousel=this;return this.element.fire("carousel:"+b,a);},observe:function(a,b){this.element.observe("carousel:"+a,b.bind(this));return this;},stopObserving:function(a,b){this.element.stopObserving("carousel:"+a,b);return this;},checkScroll:function(a,d){if(a>0){a=0;}else{var b=this.elements.last().positionedOffset()[this.posAttribute]+this.elementSize;var c=this.currentSize();if(a+b<c){a+=c-(a+b);}a=Math.min(a,0);}if(d){this.container.style[this.posAttribute]=a+"px";}return a;},scroll:function(b){if(this.animating){return this;}var a=this.currentPosition()+b;a=this.checkScroll(a,false);b=a-this.currentPosition();if(b!=0){this.animating=true;this.fire("scroll:started");var c=this;this.container.morph("opacity:1",{duration:0,afterFinish:function(){c.container.morph(c.posAttribute+": "+a+"px",{duration:0.5,afterFinish:function(){c.container.morph("opacity:1",{duration:0.2,afterFinish:function(){c.animating=false;c.updateButtons().fire("scroll:ended",{shift:b/c.currentSize()});}});}});}});}return this;},scrollTo:function(a){if(this.animating||a<0||a>this.elements.length||a==this.currentIndex()||isNaN(parseInt(a))){return this;}return this.scroll((this.currentIndex()-a)*this.elementSize);},updateButtons:function(){this.updatePreviousButton();this.updateNextButton();return this;},updatePreviousButton:function(){var a=this.currentPosition();var b="previous_button"+this.options.disabledButtonSuffix;if(this.previousButton.hasClassName(b)&&a!=0){this.previousButton.removeClassName(b);this.fire("previousButton:enabled");}if(!this.previousButton.hasClassName(b)&&a==0){this.previousButton.addClassName(b);this.fire("previousButton:disabled");}},updateNextButton:function(){var a=this.currentLastPosition();var b=this.currentSize();var c="next_button"+this.options.disabledButtonSuffix;if(this.nextButton.hasClassName(c)&&a!=b){this.nextButton.removeClassName(c);this.fire("nextButton:enabled");}if(!this.nextButton.hasClassName(c)&&a==b){this.nextButton.addClassName(c);this.fire("nextButton:disabled");}},computeElementSize:function(){return this.elements.first().getDimensions()[this.dimAttribute];},currentIndex:function(){return -this.currentPosition()/this.elementSize;},currentLastPosition:function(){if(this.container.childElements().empty()){return 0;}return this.currentPosition()+this.elements.last().positionedOffset()[this.posAttribute]+this.elementSize;},currentPosition:function(){return this.container.getNumStyle(this.posAttribute);},currentSize:function(){return this.container.parentNode.getDimensions()[this.dimAttribute];},updateSize:function(){this.nbVisible=this.currentSize()/this.elementSize;var a=this.options.scrollInc;if(a=="auto"){a=Math.floor(this.nbVisible);}[this.previousButton,this.nextButton].each(function(b){if(!b){return;}b.stopObserving("click",b.clickHandler);b.clickHandler=this.scroll.bind(this,(b==this.nextButton?-1:1)*a*this.elementSize);b.observe("click",b.clickHandler);},this);this.checkScroll(this.currentPosition(),true);this.updateButtons().fire("sizeUpdated");return this;}});