$(function(){
	$.productsScroll = {
		$pContainer : $("#prod-details-container"),
		$leftBtn : $("#prod-detail-left"),
		$rightBtn : $("#prod-detail-right"),
		itemWidth : $("#prod-details-container").children().width(),
		initBtn : function(){
			var pCurrentIndex = this.$pContainer.children(".current").index();
			var pTotalNum = this.$pContainer.children().size();
			if(pCurrentIndex == 0 && pCurrentIndex != pTotalNum - 1){
				this.$leftBtn.hide();
				this.$rightBtn.show();
			}else if(pCurrentIndex > 0 && pCurrentIndex == pTotalNum - 1){
				this.$leftBtn.show();
				this.$rightBtn.hide();
			}else if(pCurrentIndex > 0 && pCurrentIndex != pTotalNum - 1){
				this.$leftBtn.show();
				this.$rightBtn.show();
			}else{
				this.$leftBtn.hide();
				this.$rightBtn.hide();
			}
			
		},
		toNext : function(){
			var target = this;
			var pCurrentIndex = this.$pContainer.children(".current").index();
			var pTotalNum = this.$pContainer.children().size();
			var pNextIndex = pCurrentIndex + 1;
			var $pList = this.$pContainer.children();
			var itemWidth = this.itemWidth;
			if(pNextIndex < pTotalNum){
				$pList.eq(pNextIndex).css({"left": itemWidth, "opacity": 0}).stop(true, true).animate({"left": 0, "opacity": 1},{complete: function(){$(this).addClass("current").siblings().removeClass("current"); target.initBtn();}});
				$pList.eq(pCurrentIndex).stop(true, true).animate({"left": -itemWidth, "opacity": 0});
			}
			
		},
		toPrev : function(){
			var target = this;
			var pCurrentIndex = this.$pContainer.children(".current").index();
			var pTotalNum = this.$pContainer.children().size();
			var pPrevIndex = pCurrentIndex - 1;
			var $pList = this.$pContainer.children();
			var itemWidth = this.itemWidth;
			if(pPrevIndex >= 0){
				$pList.eq(pPrevIndex).css({"left": -itemWidth, "opacity": 0}).stop(true, true).animate({"left": 0, "opacity": 1},{complete:function(){$(this).addClass("current").siblings().removeClass("current"); target.initBtn();}});
				$pList.eq(pCurrentIndex).stop(true, true).animate({"left": itemWidth, "opacity": 0});
			}
			
		},
		positionProduct : function(){
			
			var pId = location.hash;
			if(pId){
				this.$pContainer.children(pId).addClass("current").siblings().removeClass("current");
			}
		},
		init: function(){
			var target = this;
			target.positionProduct();
			target.initBtn();
			target.$rightBtn.click(function(){
				target.toNext();
			});
			target.$leftBtn.click(function(){
				target.toPrev();
			});
		}
	}
	
	
		//产品滚动
	$.productsScroll.init();
});