网(LieHuo.Net)教程 今天我们来看一下可以实时保存的树形菜单，这个例子是从blueidea看到的，使用了Div+CSS+JS，看实例代码。
<!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=gb2312"><title>Div+CSS+JS树型菜单(可实时保存) - LIEHUO.NET</title><meta name="description" content="http://www.livepo.com"><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 liehuo.net*/#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></head><body><div id="PARENT"><ul id="nav"><li><a href="#Menu=ChildMenu1" _fcksavedurl="#Menu=ChildMenu1" onclick="DoMenu('ChildMenu1')">网站教程</a><ul id="ChildMenu1" class="collapsed"><li><a href="http://www.wfuyu.com/news/" _fcksavedurl="http://www.wfuyu.com/news/" target="_blank">新闻资讯</a></li><li><a href="http://www.wfuyu.com/website/" _fcksavedurl="http://www.wfuyu.com/website/" target="_blank">网站运营</a></li><li><a href="http://www.wfuyu.com/prog/" _fcksavedurl="http://www.wfuyu.com/prog/" target="_blank">网络编程</a></li></ul></li><li><a href="#Menu=ChildMenu2" _fcksavedurl="#Menu=ChildMenu2" onclick="DoMenu('ChildMenu2')">会员中心</a><ul id="ChildMenu2" class="collapsed"><a href="http://www.wfuyu.com/member/article_add.php" _fcksavedurl="http://www.wfuyu.com/member/article_add.php" target="_blank">发表文章</a></li><li><a href="http://www.wfuyu.com/member/edit_fullinfo.php" _fcksavedurl="http://www.wfuyu.com/member/edit_fullinfo.php">个人资料</a></li><li><a href="http://www.wfuyu.com/member/mtypes.php" _fcksavedurl="http://www.wfuyu.com/member/mtypes.php">空间管理</a></li><li><a href="http://www.wfuyu.com/member/edit_space_info.php" _fcksavedurl="http://www.wfuyu.com/member/edit_space_info.php">设置管理</a></li><li><a href="http://www.wfuyu.com/member/index.php?uid=frogsoft" _fcksavedurl="http://www.wfuyu.com/member/index.php?uid=frogsoft">我的空间</a></li></ul></li><li><a href="#Menu=ChildMenu3" _fcksavedurl="#Menu=ChildMenu3" onclick="DoMenu('ChildMenu3')">交流论坛</a><ul id="ChildMenu3" class="collapsed"><li><a href="http://bbs.liehuo.net/forum-28-1.html" _fcksavedurl="http://bbs.liehuo.net/forum-28-1.html">软件交流</a></li><a href="http://bbs.liehuo.net/forum-26-1.html" _fcksavedurl="http://bbs.liehuo.net/forum-26-1.html" target="_blank">网址系统</a></li><li><a href="http://bbs.liehuo.net/forum-2-1.html" _fcksavedurl="http://bbs.liehuo.net/forum-2-1.html">电脑数码</a></li><li><a href="http://bbs.liehuo.net/forum-35-1.html" _fcksavedurl="http://bbs.liehuo.net/forum-35-1.html">站长建站</a></li></ul></li><li><a href="#Menu=ChildMenu4" _fcksavedurl="#Menu=ChildMenu4" onclick="DoMenu('ChildMenu4')">站长工具</a><ul id="ChildMenu4" class="collapsed"><li><a href="http://tool.liehuo.net/baidu_google.php" _fcksavedurl="http://tool.liehuo.net/baidu_google.php">百度收录</a></li><a href="http://tool.liehuo.net/pr/" _fcksavedurl="http://tool.liehuo.net/pr/" target="_blank">PR查询</a></li><li><a href="http://alexa.liehuo.net/" _fcksavedurl="http://alexa.liehuo.net/">ALEXA查询</a></li><li><a href="http://tool.liehuo.net/whois/" _fcksavedurl="http://tool.liehuo.net/whois/">域名whois</a></li></ul></li></ul></div><div style="width:300;padding-left:30px;"></br></br>教程 http://www.wfuyu.com/</br></br><p>欢迎访问:<a href="http://www.wfuyu.com" _fcksavedurl="http://www.wfuyu.com" target="_blank">http://www.wfuyu.com</a></p></div></body></html><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"), ""); } }}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> 提示：可修改后代码再运行!
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