var CNETcarousel = new Class({
	initialize: function(container, options){
		this.container = $(container);
		if(!this.container.hasClass('hasCarousel')){
			this.container.addClass('hasCarousel');
			this.slides = [];
			this.buttons = [];
			this.setOptions({
				onRotate: Class.empty,
				onStop: Class.empty,
				onAutoPlay: Class.empty,
				onShowSlide: Class.empty,
				slidesSelector: ".slide",
				buttonsSelector: ".button",
				slideInterval: 4000,
				transitionDuration: 700,
				startIndex: 0,
				buttonOnClass: "selected",
				buttonOffClass: "off",
				rotateAction: "none",
				rotateActionDuration: 100,
				autoplay: true
			}, options);
			this.slides = $(container).getElements(this.options.slidesSelector);
			this.buttons = $(container).getElements(this.options.buttonsSelector);
			this.createFx();
			this.showSlide(this.options.startIndex);
			if(this.options.autoplay) this.autoplay();
			if(this.options.rotateAction != 'none') this.setupAction(this.options.rotateAction);
			return this;
		} else return false;
	},
	setupAction: function(action) {
		this.buttons.each(function(el, idx){
			$(el).addEvent(action, function() {
				this.slideFx.setOptions(this.slideFx.options, {duration: this.options.rotateActionDuration});
				if(this.currentSlide != idx) this.showSlide(idx);
				this.stop();
			}.bind(this));
		}, this);
		
		this.container.addEvent("mouseleave",function(){
			if(this.slideshowInt) clearInterval(this.slideshowInt);
			this.autoplay();	
		}.bind(this));
	},

	createFx: function(currentSlide){
		this.slideFx = new Fx.Elements(this.slides, {duration: this.options.transitionDuration});
		this.slides.each(function(slide,index){
			if(index != currentSlide){
				slide.setStyle('opacity',0);
			}
			
		});
	},

	showSlide: function(slideIndex){
		var action = {};
		this.slides.each(function(slide, index){
			if(index == slideIndex && index != this.currentSlide){ 
				$(this.buttons[index]).removeClass(this.options.buttonOffClass).addClass(this.options.buttonOnClass);
				action[index.toString()] = {
					'opacity': [1]
				};
			} else {
				$(this.buttons[index]).removeClass(this.options.buttonOnClass).addClass(this.options.buttonOffClass);
				action[index.toString()] = {
					'opacity':[0]
				};
			}
		}, this);
		this.fireEvent('onShowSlide', slideIndex);
		this.currentSlide = slideIndex;
		this.slideFx.start(action);
	},
	
	
	autoplay: function(){
		this.createFx(this.currentSlide);
		this.slideshowInt = this.rotate.periodical(this.options.slideInterval, this);
		this.fireEvent('onAutoPlay');
	},

	stop: function(){
		clearInterval(this.slideshowInt);
		this.fireEvent('onStop');
	},

	rotate: function(){
		current = this.currentSlide;
		next = (current+1 >= this.slides.length) ? 0 : current+1;
		this.showSlide(next);
		this.fireEvent('onRotate');
	},

	show: function() {
		$(this.options.carouselContainer).setStyle('visibility','visible');
		if(!$(this.options.carouselContainer).isVisible())$(this.options.carouselContainer).setStyle('display','block');
	},

	hide: function(){
		$(this.options.carouselContainer).setStyle('visibility','hidden');
	}
});
CNETcarousel.implement(new Options);
CNETcarousel.implement(new Events);


var CNETcarouselWithButtons = CNETcarousel.extend({
	initialize:function(el, options){
		this.parent(el, $merge({
			bubbleButtonBGImgSelector: '.bbg',
			buttonOnGifSrc: 'http://i.i.com.com/cnwk.1d/i/fd/c/green_button.gif',
			buttonOffGifSrc: 'http://i.i.com.com/cnwk.1d/i/fd/c/gray_button.gif'
		}, options));
	},
	showSlide: function(slideIndex){
		this.buttons.each(function(button, index){
			$(button).getElement(this.options.bubbleButtonBGImgSelector).src = (index == slideIndex)?this.options.buttonOnGifSrc:this.options.buttonOffGifSrc;
		}, this);
		this.parent(slideIndex);
	}
});