<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
<style type="text/css">
*{margin:0;padding:0;border:0;}
body
{
font-family: arial, 宋体, serif;
font-size:12px;
}
#nav {
180px;
line-height: 24px;
list-style-type: none;
text-align:left;
/*定义整个ul菜单的行高和背景色*/
}
/*==================一级目录===================*/
#nav a {
160px;
display: block;
padding-left:20px;
}
#nav li {
background:#CCC; /*一级目录的背景色*/
border-bottom:#FFF 1px solid; /*下面的一条白边*/
float:left;
}
#nav li a:hover{
background:#CC0000; /*一级目录onMouseOver显示的背景色*/
}
#nav a:link {
color:#666; text-decoration:none;
}
#nav a:visited {
color:#666;text-decoration:none;
}
#nav a:hover {
color:#FFF;text-decoration:none;font-weight:bold;
}
/*==================二级目录===================*/
#nav li ul {
list-style:none;
text-align:left;
}
#nav li ul li{
background: #EBEBEB; /*二级目录的背景色*/
}
#nav li ul a{
padding-left:20px;
160px;
/* padding-left二级目录中文字向右移动，但Width必须重新设置=(总宽度-padding-left)*/
}
/*下面是二级目录的链接样式*/
#nav li ul a:link {
color:#666; text-decoration:none;
}
#nav li ul a:visited {
color:#666;text-decoration:none;
}
#nav li ul a:hover {
color:#F3F3F3;
text-decoration:none;
font-weight:normal;
background:#CC0000;
/* 二级onmouseover的字体颜色、背景色*/
}
/*==============================*/
#nav li:hover ul {
left: auto;
}
#nav li.sfhover ul {
left: auto;
}
#content {
clear: left;
}
#nav ul.collapsed {
display: none;
}
#PARENT{
300px;
padding-left:20px;
}
</style>
<script type="text/javascript">
var LastLeftID = "";
function menuFix() {
var obj = document.getElementById("nav").getElementsByTagName("li");
for (var i = 0; i < obj.length; i++) {
obj[i].onmouseover = function () {
this.className += (this.className.length > 0 ? " " : "") + "sfhover";
}
obj[i].onMouseDown = function () {
this.className += (this.className.length > 0 ? " " : "") + "sfhover";
}
obj[i].onMouseUp = function () {
this.className += (this.className.length > 0 ? " " : "") + "sfhover";
}
obj[i].onmouseout = function () {
this.className = this.className.replace(new RegExp("( ?|^)sfhover\b"), "");
}
}
}
function DoMenu(emid) {
var obj = document.getElementById(emid);
obj.className = (obj.className.toLowerCase() == "expanded" ? "collapsed" : "expanded");
if ((LastLeftID != "") && (emid != LastLeftID)) //关闭上一个Menu
{
document.getElementById(LastLeftID).className = "collapsed";
}
LastLeftID = emid;
}
function GetMenuID() {
var MenuID = "";
var _paramStr = new String(window.location.href);
var _sharpPos = _paramStr.indexOf("#");
if (_sharpPos >= 0 && _sharpPos < _paramStr.length - 1) {
_paramStr = _paramStr.substring(_sharpPos + 1, _paramStr.length);
}
else {
_paramStr = "";
}
if (_paramStr.length > 0) {
var _paramArr = _paramStr.split("&");
if (_paramArr.length > 0) {
var _paramKeyVal = _paramArr[0].split("=");
if (_paramKeyVal.length > 0) {
MenuID = _paramKeyVal[1];
}
}
/*
if (_paramArr.length>0)
{
var _arr = new Array(_paramArr.length);
}
//取所有#后面的，菜单只需用到Menu
//for (var i = 0; i < _paramArr.length; i++)
{
var _paramKeyVal = _paramArr[i].split('=');
if (_paramKeyVal.length>0)
{
_arr[_paramKeyVal[0]] = _paramKeyVal[1];
}
}
*/
}
if (MenuID != "") {
DoMenu(MenuID)
}
}
GetMenuID(); //*这两个function的顺序要注意一下，不然在Firefox里GetMenuID()不起效果
menuFix();
</script>
</head>
<body>
<div id="PARENT">
<ul id="nav">
<li><a href="#Menu=ChildMenu1" onmouseover="DoMenu('ChildMenu1')" onclick="DoMenu('ChildMenu1')">懒人建站</a>
<ul id="ChildMenu1" class="collapsed">
<li><a href="#">懒人建站</a></li>
<li><a href="#">js代码</a></li>
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<li><a href="#">js代码</a></li>
<li><a href="#">懒人建站</a></li>
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</ul>
</li>
<li><a href="#Menu=ChildMenu2" onclick="DoMenu('ChildMenu2')">懒人建站</a>
<ul id="ChildMenu2" class="collapsed">
<li><a href="#">懒人建站</a></li>
<li><a href="#">懒人建站</a></li>
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<li><a href="#">懒人建站</a></li>
<li><a href="#">懒人建站</a></li>
</ul>
</li>
<li><a href="#Menu=ChildMenu3" onclick="DoMenu('ChildMenu3')">懒人建站</a>
<ul id="ChildMenu3" class="collapsed">
<li><a href="#">懒人建站</a></li>
<li><a href="#">懒人建站</a></li>
<li><a href="#">懒人建站</a></li>
<li><a href="#">懒人建站</a></li>
</ul>
</li>
<li><a href="#Menu=ChildMenu4" onclick="DoMenu('ChildMenu4')">懒人建站</a>
<ul id="ChildMenu4" class="collapsed">
<li><a href="#">懒人建站</a></li>
<li><a href="#">懒人建站</a></li>
<li><a href="#">懒人建站</a></li>
<li><a href="#">懒人建站</a></li>
<li><a href="#">懒人建站</a></li>
</ul>
</li>
</ul>
</div>
</body>
</html>
转载原文：http://www.51xuediannao.com/js/nav/254.html