jQuery手风琴式左侧栏导航菜单代码

一个非常不错的jQuery手风琴式左侧栏导航菜单代码，网站左侧滑动切换收缩展开菜单代码，鼠标悬停链接背景渐显效果。

js代码

$(function() {
	var Accordion = function(el, multiple) {
		this.el = el || {};
		this.multiple = multiple || false;

		// Variables privadas
		var links = this.el.find(".link");
		// Evento
		links.on("click", {el: this.el, multiple: this.multiple}, this.dropdown)
	};

	Accordion.prototype.dropdown = function(e) {
		var $el = e.data.el;
			$this = $(this);
			$next = $this.next();

		$next.slideToggle();
		$this.parent().toggleClass("open");

		if (!e.data.multiple) {
			$el.find(".submenu").not($next).slideUp().parent().removeClass("open");
		}
	};

	var accordion = new Accordion($("#accordion"), false);
	$(".submenu li").click(function () {
		$(this).addClass("current").siblings("li").removeClass("current");
	});
});