标准树状导航菜单

<style type="text/css"><!--*{margin:0;padding:0;border:0;}body {font-family: arial, 宋体, serif;font-size:12px;}#nav {width: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 {width: 160px;display: block;padding-left:20px;/*Width(一定要)，否则下面的Li会变形*/}#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;/*float：left,本不应该设置，但由于在Firefox不能正常显示继承Nav的width,限制宽度，li自动向下延伸*/}#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;width: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{width:300px;padding-left:20px;}</style><div id="PARENT"><ul id="nav"><li><a href="#Menu=ChildMenu1" onclick="DoMenu('ChildMenu1')">我的网站</a> <ul id="ChildMenu1" class="collapsed"><li><a href="" target="_blank">网页陶吧</a></li><li><a href="#">管理</a></li><li><a href="" target="_blank">网页陶吧</a></li><li><a href="#">管理</a></li><li><a href="" target="_blank">网页陶吧</a></li><li><a href="#">管理</a></li></ul></li><li><a href="#Menu=ChildMenu2" onclick="DoMenu('ChildMenu2')">我的帐务</a> <ul id="ChildMenu2" class="collapsed"><a href="" target="_blank">支付</a></li><li><a href="#">管理</a></li><li><a href="#">网上支付</a></li><li><a href="#">登记汇款</a></li><li><a href="#">在线招领</a></li><li><a href="#">历史帐务</a></li></ul></li><li><a href="#Menu=ChildMenu3" onclick="DoMenu('ChildMenu3')">网站管理</a> <ul id="ChildMenu3" class="collapsed"><li><a href="#">登录</a></li><a href="" target="_blank">管理</a></li><li><a href="#">管理</a></li><li><a href="#">管理</a></li></ul></li><li><a href="#Menu=ChildMenu4" onclick="DoMenu('ChildMenu4')">网站管理</a> <ul id="ChildMenu4" class="collapsed"><li><a href="#">登录</a></li><a href="" target="_blank">管理</a></li><li><a href="#">管理</a></li><li><a href="#">管理</a></li><li><a href="#">管理</a></li></ul></li></ul></div><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>本代码由<a href=>网页特效网</a>提供。