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DIV+CSS+JS二级树型菜单,展开后刷新无影响

DIV+CSS+JS二级树型菜单，展开后刷新无影响二级菜单，不论展开几个栏目，刷新不影响，原作中#nav li的背景色和背景图片分开写了，造成背景色不生效文章出处：标准之路(/css_example/715.shtml)<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=gb2312" /><title>DIV+CSS+JS二级树型菜单，展开后刷新无影响</title><style type="text/css"><!--body { font-family: arial, 宋体, serif; font-size:12px; }* { margin:0px; padding:0px; }#nav { width:174px; 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: 174px; display: block; padding-left:20px; /*Width(一定要)，否则下面的Li会变形*/}#nav li { border-bottom:#FFF 1px solid; /*下面的一条白边*/ float:left; background-color: #FECFD6; color:#DD1336; font-weight:bold; }#nav li a:hover { background:#F85B78; /*一级目录onMouseOver显示的背景色*/ }#nav a:link { color:#DD1336; text-decoration:none; }#nav a:visited { color:#DD1336; 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:#ffecef; /*二级目录的背景色*/ font-weight:normal; }#nav li ul a { padding-left:20px; width:174px;/* 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:#FFAA1C;/* 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:174px; }</style></head><body><div id="PARENT"><ul id="nav"><li><a href="#Menu=ChildMenu1" onClick="DoMenu('ChildMenu1')">菜单一</a> <ul id="ChildMenu1" class="collapsed"><li><a href=##Menu=ChildMenu1>菜单一</a></li><li><a href=##Menu=ChildMenu1>菜单一</a></li><li><a href=##Menu=ChildMenu1>菜单一</a></li><li><a href=##Menu=ChildMenu1>菜单一</a></li><li><a href=##Menu=ChildMenu1>菜单一</a></li><li><a href=##Menu=ChildMenu1>菜单一</a></li><li><a href=##Menu=ChildMenu1>菜单一</a></li><li><a href=##Menu=ChildMenu1>菜单一</a></li><li><a href=##Menu=ChildMenu1>菜单一</a></li><li><a href=##Menu=ChildMenu1>菜单一</a></li><li><a href=##Menu=ChildMenu1>菜单一</a></li><li><a href=##Menu=ChildMenu1>菜单一</a></li></ul></li><li><a href="#Menu=ChildMenu2" onClick="DoMenu('ChildMenu2')">菜单二</a> <ul id="ChildMenu2" class="collapsed"><li><a href=##Menu=ChildMenu2>菜单二</a></li><li><a href=##Menu=ChildMenu2>菜单二</a></li><li><a href=##Menu=ChildMenu2>菜单二</a></li><li><a href=##Menu=ChildMenu2>菜单二</a></li><li><a href=##Menu=ChildMenu2>菜单二</a></li></ul></li><li><a href="#Menu=ChildMenu3" onClick="DoMenu('ChildMenu3')">菜单三</a> <ul id="ChildMenu3" class="collapsed"><li><a href=##Menu=ChildMenu3>菜单三</a></li><li><a href=##Menu=ChildMenu3>菜单三</a></li><li><a href=##Menu=ChildMenu3>菜单三</a></li><li><a href=##Menu=ChildMenu3>菜单三</a></li><li><a href=##Menu=ChildMenu3>菜单三</a></li><li><a href=##Menu=ChildMenu3>菜单三</a></li></ul></li><li><a href="#Menu=ChildMenu4" onClick="DoMenu('ChildMenu4')">菜单四</a> <ul id="ChildMenu4" class="collapsed"><li><a href=##Menu=ChildMenu4>菜单四</a></li><li><a href=#Menu=ChildMenu4>菜单四</a></li><li><a href=##Menu=ChildMenu4>菜单四</a></li><li><a href=##Menu=ChildMenu4>菜单四</a></li><li><a href=##Menu=ChildMenu4>菜单四</a></li><li><a href=##Menu=ChildMenu4>菜单四</a></li></ul></li><li><a href="#Menu=ChildMenu5" onClick="DoMenu('ChildMenu5')">菜单五</a> <ul id="ChildMenu5" class="collapsed"><li><a href=##Menu=ChildMenu5>菜单五</a></li><li><a href=##Menu=ChildMenu5>菜单五</a></li><li><a href=##Menu=ChildMenu5>菜单五</a></li><li><a href=##Menu=ChildMenu5>菜单五</a></li><li><a href=##Menu=ChildMenu5>菜单五</a></li><li><a href=##Menu=ChildMenu5>菜单五</a></li><li><a href=##Menu=ChildMenu5>菜单五</a></li><li><a href=##Menu=ChildMenu5>菜单五</a></li><li><a href=##Menu=ChildMenu5>菜单五</a></li><li><a href=#C#Menu=ChildMenu5>菜单五</a></li><li><a href=##Menu=ChildMenu5>菜单五</a></li><li><a href=##Menu=ChildMenu5>菜单五</a></li></ul></li><li><a href="#Menu=ChildMenu6" onClick="DoMenu('ChildMenu6')">菜单六</a> <ul id="ChildMenu6" class="collapsed"><li><a href=##Menu=ChildMenu6>菜单六</a></li><li><a href=##Menu=ChildMenu6>菜单六</a></li><li><a href=##Menu=ChildMenu6>菜单六</a></li></ul></li><li><a href="#Menu=ChildMenu7" onClick="DoMenu('ChildMenu7')">菜单七</a> <ul id="ChildMenu7" class="collapsed"><li><a href=##Menu=ChildMenu7>菜单七</a></li><li><a href=##Menu=ChildMenu7>菜单七</a></li></ul></li><li><a href="#Menu=ChildMenu8" onClick="DoMenu('ChildMenu8')">菜单八</a> <ul id="ChildMenu8" class="collapsed"><li><a href=##Menu=ChildMenu8>菜单八</a></li><li><a href=##Menu=ChildMenu8>菜单八</a></li><li><a href=##Menu=ChildMenu8>菜单八</a></li></ul></li><li><a href="#Menu=ChildMenu9" onClick="DoMenu('ChildMenu9')">菜单九</a><ul id="ChildMenu9" class="collapsed"><li><a href=##Menu=ChildMenu9>菜单九</a></li><li><a href=##Menu=ChildMenu9>菜单九</a></li><li><a href=##Menu=ChildMenu9>菜单九</a></li></ul></li><li><a href="#Menu=ChildMenu10" onClick="DoMenu('ChildMenu10')">菜单十</a> <ul id="ChildMenu10" class="collapsed"><li><a href=##Menu=ChildMenu10>菜单十</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></html>文章出处：标准之路(/css_example/715.shtml)。

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