Carousel=Class.create(Abstract,{initialize:function(scroller,slides,controls,options){this.scrolling=false;this.scroller=scroller;this.slides=slides;this.controls=controls;this.options=Object.extend({duration:1.0,frequency:3,controlClassName:'carousel-control',jumperClassName:'carousel-jumper'},options||{});this.slides.each(function(slide,index){slide._index=index;});if(this.controls){this.controls.invoke('observe','click',this.click.bind(this));}
if(this.options.auto){this.start();this.slides.invoke('observe','mouseover',this.pause.bind(this));this.slides.invoke('observe','mouseout',this.resume.bind(this));}},click:function(event){this.stop();var element=event.findElement('a');if(!element.hasClassName('disabled')){this.deactivateControls();if(element.hasClassName(this.options.controlClassName)){eval("this."+element.rel+"()");}else if(element.hasClassName(this.options.jumperClassName)){this.moveTo(element,element.rel);}}
event.stop();},moveTo:function(trigger,element){if(this.options.beforeMove&&(typeof this.options.beforeMove=='function')){this.options.beforeMove();}
if(this.controls&&this.options.selectedClassName){this.controls.each((function(elm){elm.removeClassName(this.options.selectedClassName);}).bind(this));trigger.addClassName(this.options.selectedClassName);}
this.previous=this.current?this.current:this.slides[0];this.current=$(element);var scrollerOffset=this.scroller.cumulativeOffset();var elementOffset=this.current.cumulativeOffset();if(this.scrolling){this.scrolling.cancel();}
this.scrolling=new Effect.SmoothScroll(this.scroller,{duration:this.options.duration,x:(elementOffset[0]-scrollerOffset[0]),y:(elementOffset[1]-scrollerOffset[1]),queue:{position:'end',limit:1,scope:this.scroller.id},afterFinish:(function(){if(this.controls){this.activateControls();}}).bind(this)});if(this.options.afterMove&&(typeof this.options.afterMove=='function')){this.options.afterMove();}
return false;},prev:function(){if(this.current){var currentIndex=this.current._index;var prevIndex=(currentIndex==0)?this.slides.length-1:currentIndex-1;}else{var prevIndex=this.slides.length-1;}
this.moveTo(this.controls?this.controls[prevIndex]:false,this.slides[prevIndex]);},next:function(){if(this.current){var currentIndex=this.current._index;var nextIndex=(this.slides.length-1==currentIndex)?0:currentIndex+1;}else{var nextIndex=1;}
this.moveTo(this.controls?this.controls[nextIndex]:false,this.slides[nextIndex]);},first:function(){var firstIndex=0;if(this.current){var currentIndex=this.current._index;}
this.moveTo(this.controls[firstIndex],this.slides[firstIndex]);},last:function(){var lastIndex=(this.slides.length-1);if(this.current){var currentIndex=this.current._index;}
this.moveTo(this.controls[lastIndex],this.slides[lastIndex]);},toggle:function(){if(this.previous){this.moveTo(this.controls[this.previous._index],this.slides[this.previous._index]);}else{return false;}},stop:function(){clearTimeout(this.timer);},start:function(){this.periodicallyUpdate();},pause:function(event){this.stop();this.activateControls();},resume:function(event){if(event){var related=event.relatedTarget||event.toElement;if(!related||(!this.slides.include(related)&&!this.slides.any(function(slide){return related.descendantOf(slide);}))){this.start();}}else{this.start();}},periodicallyUpdate:function(){if(this.timer!=null){clearTimeout(this.timer);this.next();}
this.timer=setTimeout(this.periodicallyUpdate.bind(this),this.options.frequency*1000);},deactivateControls:function(){this.controls.invoke('addClassName','disabled');},activateControls:function(){this.controls.invoke('removeClassName','disabled');}});Effect.SmoothScroll=Class.create();Object.extend(Object.extend(Effect.SmoothScroll.prototype,Effect.Base.prototype),{initialize:function(element){this.element=$(element);var options=Object.extend({x:0,y:0,mode:'absolute'},arguments[1]||{});this.start(options);},setup:function(){if(this.options.continuous&&!this.element._ext){this.element.cleanWhitespace();this.element._ext=true;this.element.appendChild(this.element.firstChild);}
this.originalLeft=this.element.scrollLeft;this.originalTop=this.element.scrollTop;if(this.options.mode=='absolute'){this.options.x-=this.originalLeft;this.options.y-=this.originalTop;}},update:function(position){this.element.scrollLeft=this.options.x*position+this.originalLeft;this.element.scrollTop=this.options.y*position+this.originalTop;}});