jqery实现树形二级菜单
直接上代码：
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>jQuery实现的树形列表菜单(Menu Tree) - 分享JavaScript-sharejs.com</title><meta name="Copyright" content="JavaScript分享网 http://www.sharejs.com/" /><meta name="description" content="jQuery实现的树形列表菜单(Menu Tree),JavaScript分享网" /><meta content="JavaScript,分享,JavaScript代码,Ajax" name="keywords" /><style type="text/css">.padding {height:300px;}/* ================================================================ This copyright notice must be kept untouched in the stylesheet at all times.The original version of this stylesheet and the associated (x)htmlis available at http://www.stunicholls.com/menu/jquery-menutree.htmlCopyright (c) 2005-2008 Stu Nicholls. All rights reserved.This stylesheet and the associated (x)html may be modified in any way to fit your requirements.=================================================================== */#wrap {position:relative; height:200px; width:130px; z-index:100;}#nav {position:absolute; left:0; top:0;}#nav, #nav ul {padding:0; margin:0; list-style:none; font-family:arial, sans-serif; background:#fff; font-weight:bold;}#nav li a {padding-left:20px; white-space:nowrap;}#nav li ul li a {padding-left:0;}#nav ul {padding-left:20px;}#nav li a {color:#66b; text-decoration:none; font-size:11px;}#nav li {font-size:13px; line-height:25px; color:#d80; cursor:pointer; width:100%;}#nav li.down {text-indent:20px;}#nav li a:hover {text-decoration:underline;}</style><script type="text/javascript" src="http://www.sharejs.com/software/jquery/jquery-1.3.2.min.js"></script><script type="text/javascript">/* ================================================================ This copyright notice must be untouched at all times.Copyright (c) 2008 Stu Nicholls - stunicholls.com - all rights reserved.=================================================================== */$(document).ready(function() {$("ul#nav ul").hide();$('ul#nav li:has(ul)').each(function(i) {$(this).children().slideUp(400);});$('li.p1:has(ul)').click(function(event){if (this == event.target) {current = this;$('ul#nav li:has(ul)').each(function(i) {if (this != current) {$(this).children().slideUp(400);}});$(this).children("ul:eq(0)").slideToggle(400);}});});</script></head><body><div id="wrap"><ul id="nav"><li><a href="#url">Home</a></li><li class="p1 down">Products<ul><li><a href="#url">Flashguns</a></li><li><a href="#url">Tripods</a></li><li><a href="#url">Filters</a></li></ul></li><li class="p1 down">Services<ul><li><a href="#url">Printing</a></li><li><a href="#url">Photo Framing</a></li><li><a href="#url">Retouching</a></li><li><a href="#url">Archiving</a></li></ul></li></ul></div></body></html>其中的jquery的地址自己得换一个能够找到的，要不没有效果