function MenuIcon(node,listIcon1,listIcon2,listIcon3){
		this.node = node;
		var _this = this;
		this.listIcon1 = listIcon1;
		this.listIcon2 = listIcon2;
		this.listIcon3 = listIcon3;
		this._li = $(this.node).find("li");
		this.insetIcon(this._li,this.listIcon1,this.listIcon2);
		$(_this._li).click(function(){
			_this.nodeClick(this)
		});
	}

	MenuIcon.prototype.insetIcon = function(list,list1,list2){
		if(list1.length > list.length || list2.length > list.length){
			alert("图标多于节点");
			return 
		}
		$(list).each(function(i,item){
			$(item).find(".iconfont:first").addClass(list1[i]);
			$(item).find(".iconfont:last").addClass(list2[i]);
		})
	}

	MenuIcon.prototype.nodeClick = function(_this){
		var itemContent = $(_this).find(".item-content"),
		    siblings = itemContent.siblings(".item").find(".iconfont:last");

		$("li div.item").find("i.iconfont:last").removeClass(this.listIcon3[0]).addClass(this.listIcon2[0]);
		if(itemContent.css("display") == "none"){
			$(".item-content").hide(300);
			siblings.removeClass(this.listIcon2[0]).addClass(this.listIcon3[0]);
			itemContent.slideDown();
		}else{
			itemContent.slideUp();
			siblings.removeClass(this.listIcon3[0]).addClass(this.listIcon2[0]);
		}
	}