三级折叠菜单和二级折叠菜单....无限级树形菜单
#menu { width:200px; margin:auto;} #menu h1 { font-size:12px; border:#C60 1px solid; margin-top:1px; background-color:#F93;} #menu h2 { font-size:12px; border:#E7E7E7 1px solid; border-top-color:#FFF; background-color:#F4F4F4;} #menu ul { padding-left:15px; height:100px;border:#E7E7E7 1px solid; border-top:none;overflow:auto;} #menu a { display:block; padding:5px 0 3px 10px; text-decoration:none; overflow:hidden;} #menu a:hover{ color:#6F0; background:#000;} #menu .no {display:none;} #menu .h1 a{color:#6F0;} #menu .h2 a{color:#06F;} #menu h1 a{color:#FFF;}
function ShowMenu(obj, n) { var Nav = obj.parentNode; if (!Nav.id) { var BName = Nav.getElementsByTagName("ul"); var HName = Nav.getElementsByTagName("h2"); var t = 2; } else { var BName = document.getElementById(Nav.id).getElementsByTagName("span"); var HName = document.getElementById(Nav.id).getElementsByTagName("h1"); var t = 1; } for (var i = 0; i < HName.length; i++) { HName[i].innerHTML = HName[i].innerHTML.replace("-", "+"); HName[i].className = ""; } obj.className = "h" + t; for (var i = 0; i < BName.length; i++) { if (i != n) { BName[i].className = "no"; } } if (BName[n].className == "no") { BName[n].className = ""; obj.innerHTML = obj.innerHTML.replace("+", "-"); } else { BName[n].className = "no"; obj.className = ""; obj.innerHTML = obj.innerHTML.replace("-", "+"); } }
<div id="menu"> <h1 onClick="javascript:ShowMenu(this,0)"><a href="javascript:void(0)">+ 一级菜单A</a></a></h1> <span class="no"> <h2 onClick="javascript:ShowMenu(this,0)"><a href="javascript:void(0)">+ 一级菜单A_1</a></a></h2> <ul class="no"> <a href="javascript:void(0)">一级菜单A_0</a> <a href="javascript:void(0)">一级菜单A_1</a> <a href="javascript:void(0)">一级菜单A_2</a> <a href="javascript:void(0)">一级菜单A_3</a> <a href="javascript:void(0)">一级菜单A_4</a> <a href="javascript:void(0)">一级菜单A_5</a> <a href="javascript:void(0)">一级菜单A_6</a> <a href="javascript:void(0)">一级菜单A_7</a> <a href="javascript:void(0)">一级菜单A_8</a> <a href="javascript:void(0)">一级菜单A_9</a> </ul> <h2 onClick="javascript:ShowMenu(this,1)"><a href="javascript:void(0)">+ 一级菜单A_2</a></h2> <ul class="no"> <a href="javascript:void(0)">一级菜单A_0</a> <a href="javascript:void(0)">一级菜单A_1</a> <a href="javascript:void(0)">一级菜单A_2</a> <a href="javascript:void(0)">一级菜单A_3</a> <a href="javascript:void(0)">一级菜单A_4</a> <a href="javascript:void(0)">一级菜单A_5</a> <a href="javascript:void(0)">一级菜单A_6</a> <a href="javascript:void(0)">一级菜单A_7</a> <a href="javascript:void(0)">一级菜单A_8</a> <a href="javascript:void(0)">一级菜单A_9</a> </ul> <h2 onClick="javascript:ShowMenu(this,2)"><a href="javascript:void(0)">+ 一级菜单A_3</a></h2> <ul class="no"> <a href="javascript:void(0)">一级菜单A_0</a> <a href="javascript:void(0)">一级菜单A_1</a> <a href="javascript:void(0)">一级菜单A_2</a> <a href="javascript:void(0)">一级菜单A_3</a> <a href="javascript:void(0)">一级菜单A_4</a> <a href="javascript:void(0)">一级菜单A_5</a> <a href="javascript:void(0)">一级菜单A_6</a> <a href="javascript:void(0)">一级菜单A_7</a> <a href="javascript:void(0)">一级菜单A_8</a> <a href="javascript:void(0)">一级菜单A_9</a> </ul> <h2 onClick="javascript:ShowMenu(this,3)"><a href="javascript:void(0)">+ 一级菜单A_4</a></h2> <ul class="no"> <a href="javascript:void(0)">一级菜单A_0</a> <a href="javascript:void(0)">一级菜单A_1</a> <a href="javascript:void(0)">一级菜单A_2</a> <a href="javascript:void(0)">一级菜单A_3</a> <a href="javascript:void(0)">一级菜单A_4</a> <a href="javascript:void(0)">一级菜单A_5</a> <a href="javascript:void(0)">一级菜单A_6</a> <a href="javascript:void(0)">一级菜单A_7</a> <a href="javascript:void(0)">一级菜单A_8</a> <a href="javascript:void(0)">一级菜单A_9</a> </ul> <h2 onClick="javascript:ShowMenu(this,4)"><a href="javascript:void(0)">+ 一级菜单A_5</a></h2> <ul class="no"> <a href="javascript:void(0)">一级菜单A_0</a> <a href="javascript:void(0)">一级菜单A_1</a> <a href="javascript:void(0)">一级菜单A_2</a> <a href="javascript:void(0)">一级菜单A_3</a> <a href="javascript:void(0)">一级菜单A_4</a> <a href="javascript:void(0)">一级菜单A_5</a> <a href="javascript:void(0)">一级菜单A_6</a> <a href="javascript:void(0)">一级菜单A_7</a> <a href="javascript:void(0)">一级菜单A_8</a> <a href="javascript:void(0)">一级菜单A_9</a> </ul> <h2 onClick="javascript:ShowMenu(this,5)"><a href="javascript:void(0)">+ 一级菜单A_6</a></h2> <ul class="no"> <a href="javascript:void(0)">一级菜单A_0</a> <a href="javascript:void(0)">一级菜单A_1</a> <a href="javascript:void(0)">一级菜单A_2</a> <a href="javascript:void(0)">一级菜单A_3</a> <a href="javascript:void(0)">一级菜单A_4</a> <a href="javascript:void(0)">一级菜单A_5</a> <a href="javascript:void(0)">一级菜单A_6</a> <a href="javascript:void(0)">一级菜单A_7</a> <a href="javascript:void(0)">一级菜单A_8</a> <a href="javascript:void(0)">一级菜单A_9</a> </ul> <h2 onClick="javascript:ShowMenu(this,6)"><a href="javascript:void(0)">+ 一级菜单A_7</a></h2> <ul class="no"> <a href="javascript:void(0)">一级菜单A_0</a> <a href="javascript:void(0)">一级菜单A_1</a> <a href="javascript:void(0)">一级菜单A_2</a> <a href="javascript:void(0)">一级菜单A_3</a> <a href="javascript:void(0)">一级菜单A_4</a> <a href="javascript:void(0)">一级菜单A_5</a> <a href="javascript:void(0)">一级菜单A_6</a> <a href="javascript:void(0)">一级菜单A_7</a> <a href="javascript:void(0)">一级菜单A_8</a> <a href="javascript:void(0)">一级菜单A_9</a> </ul> <h2 onClick="javascript:ShowMenu(this,7)"><a href="javascript:void(0)">+ 一级菜单A_8</a></h2> <ul class="no"> <a href="javascript:void(0)">一级菜单A_0</a> <a href="javascript:void(0)">一级菜单A_1</a> <a href="javascript:void(0)">一级菜单A_2</a> <a href="javascript:void(0)">一级菜单A_3</a> <a href="javascript:void(0)">一级菜单A_4</a> <a href="javascript:void(0)">一级菜单A_5</a> <a href="javascript:void(0)">一级菜单A_6</a> <a href="javascript:void(0)">一级菜单A_7</a> <a href="javascript:void(0)">一级菜单A_8</a> <a href="javascript:void(0)">一级菜单A_9</a> </ul> <h2 onClick="javascript:ShowMenu(this,8)"><a href="javascript:void(0)">+ 一级菜单A_9</a></h2> <ul class="no"> <a href="javascript:void(0)">一级菜单A_0</a> <a href="javascript:void(0)">一级菜单A_1</a> <a href="javascript:void(0)">一级菜单A_2</a> <a href="javascript:void(0)">一级菜单A_3</a> <a href="javascript:void(0)">一级菜单A_4</a> <a href="javascript:void(0)">一级菜单A_5</a> <a href="javascript:void(0)">一级菜单A_6</a> <a href="javascript:void(0)">一级菜单A_7</a> <a href="javascript:void(0)">一级菜单A_8</a> <a href="javascript:void(0)">一级菜单A_9</a> </ul> <h2 onClick="javascript:ShowMenu(this,9)"><a href="javascript:void(0)">+ 一级菜单A_10</a></h2> <ul class="no"> <a href="javascript:void(0)">一级菜单A_0</a> <a href="javascript:void(0)">一级菜单A_1</a> <a href="javascript:void(0)">一级菜单A_2</a> <a href="javascript:void(0)">一级菜单A_3</a> <a href="javascript:void(0)">一级菜单A_4</a> <a href="javascript:void(0)">一级菜单A_5</a> <a href="javascript:void(0)">一级菜单A_6</a> <a href="javascript:void(0)">一级菜单A_7</a> <a href="javascript:void(0)">一级菜单A_8</a> <a href="javascript:void(0)">一级菜单A_9</a> </ul> <h2 onClick="javascript:ShowMenu(this,10)"><a href="javascript:void(0)">+ 一级菜单A_11</a></h2> <ul class="no"> <a href="javascript:void(0)">一级菜单A_0</a> <a href="javascript:void(0)">一级菜单A_1</a> <a href="javascript:void(0)">一级菜单A_2</a> <a href="javascript:void(0)">一级菜单A_3</a> <a href="javascript:void(0)">一级菜单A_4</a> <a href="javascript:void(0)">一级菜单A_5</a> <a href="javascript:void(0)">一级菜单A_6</a> <a href="javascript:void(0)">一级菜单A_7</a> <a href="javascript:void(0)">一级菜单A_8</a> <a href="javascript:void(0)">一级菜单A_9</a> </ul> <h2 onClick="javascript:ShowMenu(this,11)"><a href="javascript:void(0)">+ 一级菜单A_12</a></h2> <ul class="no"> <a href="javascript:void(0)">一级菜单A_0</a> <a href="javascript:void(0)">一级菜单A_1</a> <a href="javascript:void(0)">一级菜单A_2</a> <a href="javascript:void(0)">一级菜单A_3</a> <a href="javascript:void(0)">一级菜单A_4</a> <a href="javascript:void(0)">一级菜单A_5</a> <a href="javascript:void(0)">一级菜单A_6</a> <a href="javascript:void(0)">一级菜单A_7</a> <a href="javascript:void(0)">一级菜单A_8</a> <a href="javascript:void(0)">一级菜单A_9</a> </ul> </span> <h1 onClick="javascript:ShowMenu(this,1)"><a href="javascript:void(0)">+ 二级菜单B</a></h1> <span class="no"> <h2 onClick="javascript:ShowMenu(this,0)"><a href="javascript:void(0)">+ 二级菜单B_1</a></h2> <ul class="no"> <a href="javascript:void(0)">二级菜单B_0</a> <a href="javascript:void(0)">二级菜单B_1</a> <a href="javascript:void(0)">二级菜单B_2</a> <a href="javascript:void(0)">二级菜单B_3</a> <a href="javascript:void(0)">二级菜单B_4</a> <a href="javascript:void(0)">二级菜单B_5</a> <a href="javascript:void(0)">二级菜单B_6</a> <a href="javascript:void(0)">二级菜单B_7</a> <a href="javascript:void(0)">二级菜单B_8</a> <a href="javascript:void(0)">二级菜单B_9</a> </ul> <h2 onClick="javascript:ShowMenu(this,1)"><a href="javascript:void(0)">+ 二级菜单B_2</a></h2> <ul class="no"> <a href="javascript:void(0)">二级菜单B_0</a> <a href="javascript:void(0)">二级菜单B_1</a> <a href="javascript:void(0)">二级菜单B_2</a> <a href="javascript:void(0)">二级菜单B_3</a> <a href="javascript:void(0)">二级菜单B_4</a> <a href="javascript:void(0)">二级菜单B_5</a> <a href="javascript:void(0)">二级菜单B_6</a> <a href="javascript:void(0)">二级菜单B_7</a> <a href="javascript:void(0)">二级菜单B_8</a> <a href="javascript:void(0)">二级菜单B_9</a> </ul> </span> <h1 onClick="javascript:ShowMenu(this,2)"><a href="javascript:void(0)">+ 三级菜单C</a></h1> <span class="no"> <h2 onClick="javascript:ShowMenu(this,0)"><a href="javascript:void(0)">+ 三级菜单C_1</a></h2> <ul class="no"> <a href="javascript:void(0)">三级菜单C_0</a> <a href="javascript:void(0)">三级菜单C_1</a> <a href="javascript:void(0)">三级菜单C_2</a> <a href="javascript:void(0)">三级菜单C_3</a> <a href="javascript:void(0)">三级菜单C_4</a> <a href="javascript:void(0)">三级菜单C_5</a> <a href="javascript:void(0)">三级菜单C_6</a> <a href="javascript:void(0)">三级菜单C_7</a> <a href="javascript:void(0)">三级菜单C_8</a> <a href="javascript:void(0)">三级菜单C_9</a> </ul> <h2 onClick="javascript:ShowMenu(this,1)"><a href="javascript:void(0)">+ 三级菜单C_2</a></h2> <ul class="no"> <a href="javascript:void(0)">三级菜单C_0</a> <a href="javascript:void(0)">三级菜单C_1</a> <a href="javascript:void(0)">三级菜单C_2</a> <a href="javascript:void(0)">三级菜单C_3</a> <a href="javascript:void(0)">三级菜单C_4</a> <a href="javascript:void(0)">三级菜单C_5</a> <a href="javascript:void(0)">三级菜单C_6</a> <a href="javascript:void(0)">三级菜单C_7</a> <a href="javascript:void(0)">三级菜单C_8</a> <a href="javascript:void(0)">三级菜单C_9</a> </ul> </span> <h1 onClick="javascript:ShowMenu(this,3)"><a href="javascript:void(0)">+ 四级菜单D</a></h1> <span class="no"> <h2 onClick="javascript:ShowMenu(this,0)"><a href="javascript:void(0)">+ 四级菜单D_1</a></h2> <ul class="no"> <a href="javascript:void(0)">四级菜单D_0</a> <a href="javascript:void(0)">四级菜单D_1</a> <a href="javascript:void(0)">四级菜单D_2</a> <a href="javascript:void(0)">四级菜单D_3</a> <a href="javascript:void(0)">四级菜单D_4</a> <a href="javascript:void(0)">四级菜单D_5</a> <a href="javascript:void(0)">四级菜单D_6</a> <a href="javascript:void(0)">四级菜单D_7</a> <a href="javascript:void(0)">四级菜单D_8</a> <a href="javascript:void(0)">四级菜单D_9</a> </ul> <h2 onClick="javascript:ShowMenu(this,1)"><a href="javascript:void(0)">+ 四级菜单D_2</a></h2> <ul class="no"> <a href="javascript:void(0)">四级菜单D_0</a> <a href="javascript:void(0)">四级菜单D_1</a> <a href="javascript:void(0)">四级菜单D_2</a> <a href="javascript:void(0)">四级菜单D_3</a> <a href="javascript:void(0)">四级菜单D_4</a> <a href="javascript:void(0)">四级菜单D_5</a> <a href="javascript:void(0)">四级菜单D_6</a> <a href="javascript:void(0)">四级菜单D_7</a> <a href="javascript:void(0)">四级菜单D_8</a> <a href="javascript:void(0)">四级菜单D_9</a> </ul> </span> </div>
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下面为二级折叠菜单
function ShowMenu(obj, n) { var Nav = obj.parentNode; if (!Nav.id) { var BName = Nav.getElementsByTagName("ul"); var HName = Nav.getElementsByTagName("h2"); var t = 2; } else { var BName = document.getElementById(Nav.id).getElementsByTagName("span"); var HName = document.getElementById(Nav.id).getElementsByTagName("h1"); var t = 1; } for (var i = 0; i < HName.length; i++) { //HName[i].innerHTML = HName[i].innerHTML.replace("-", "+");//点击另一个菜单时，本菜单样式更换 HName[i].className = ""; } obj.className = "h" + t; for (var i = 0; i < BName.length; i++) { if (i != n) { BName[i].className = "no"; } } if (BName[n].className == "no") {//一级菜单展开时 BName[n].className = ""; $(obj).addClass("Navleft1"); //obj.innerHTML = obj.innerHTML.replace("+", "-"); } else { BName[n].className = "no"; obj.className = ""; //obj.innerHTML = obj.innerHTML.replace("-", "+"); //一级菜单折叠时 } }
#Nav_left { width:100%; margin:auto;padding-bottom:10px; background:#f5f5f5;} #Nav_left h1 { border-bottom:#e3e3e3 1px solid; margin-top:1px; } #Nav_left h1 a { background:url(../images/jia.png) no-repeat 30px center;font-size:16px; display:inline-block; padding:0px 0 0px 50px;height:40px;line-height:40px; text-decoration:none; overflow:hidden;color:#545454} #Nav_left h1 a:hover{ color:#f77801;} #Nav_left h1.Navleft1 a{color:#f77801;background:url(../images/jia1.png) no-repeat 30px center} #Nav_left .no {display:none;} #Nav_left .h1 a{color:#333;} #Nav_left ul { padding-left:60px; overflow:auto;border-bottom:1px solid #e3e3e3} #Nav_left ul li {height:30px;line-height:30px} #Nav_left ul li a{background:url(../images/dotted.jpg) no-repeat left center;line-height:30px;padding-left:10px} #Nav_left ul li a:hover{color:#f77801;background:url(../images/dottedred.jpg) no-repeat left center;}
<div id="Nav_left"> <h1 onClick="javascript:ShowMenu(this,0)" ><a href="javascript:void(0)" >一级菜单A</a></h1> <span class="no"> <ul> <li><a href="">一级菜单A_1</a></li> <li><a href="">一级菜单A_1</a></li> </ul> </span> <h1 onClick="javascript:ShowMenu(this,1)"><a href="javascript:void(0)">一级菜单A</a></h1> <span class="no"> <ul> <li><a href="">一级菜单A_1</a></li> <li><a href="">一级菜单A_1</a></li> </ul> </span> </div>
<!DOCTYPE html> <html> <head> <meta charset="utf-8" /> <title>无限级折叠菜单 1.01 JS版</title> <meta name="keywords" content="hj1227 原创无限级折叠菜单 1.01js版"> <meta name="description" content="hj1227 原创无限级折叠菜单 1.01js版"> <style> <!-- body,ul,h3 {margin:0px; padding:0px;} li {list-style-type:none;} body{ font-size:12px; color:#333; font-family: Simsun; line-height:15px; } a{text-decoration:none;color:#004285;border:none;} a:hover{text-decoration:none;color:#C33;} #menu { width:260px; margin:50px auto; padding:10px; border:#EEE 1px solid; } #menu h3 { font-size:12px; } #menu ul { background:url("http://demo.jb51.net/js/2011/caidan/ul-bg.gif") repeat-y 5px 0px; overflow:hidden; } #menu ul li { padding:5px 0 2px 15px; background:url("http://demo.jb51.net/js/2011/caidan/tree-ul-li.gif") no-repeat 5px -32px; } #menu ul li ul {display:none;} #menu ul li em { cursor:pointer; display:inline-block; width:15px; float:left; height:15px; margin-left:-14px; background:url("http://demo.jb51.net/js/2011/caidan/tree-ul-li.gif") no-repeat -32px 2px; } #menu ul li em.off { background-position: -17px -18px; } #menu ul li#end { background-color:#FFF; } #menu ul.off { display:block; } --> </style> </head> <body> <div id="menu"> <h3>无限级折叠菜单 1.0.1 JS版</h3> <ul> <li><em></em><a href='javascript:void(0);'>菜单_1_1</a> <ul> <li><em></em><a href='javascript:void(0);'>菜单_2_1</a> <ul> <li><em></em><a href='javascript:void(0);'>菜单_3_1</a> <ul> <li><em></em><a href='javascript:void(0);'>菜单_4_1</a> <ul> <li><a href='javascript:void(0);'>菜单_5_1</a></li> <li id='end'><a href='javascript:void(0);'>菜单_5_2</a></li> </ul> </li> <li id='end'><em></em><a href='javascript:void(0);'>菜单_4_2</a> <ul> <li><a href='javascript:void(0);'>菜单_5_1</a></li> <li id='end'><a href='javascript:void(0);'>菜单_5_2</a></li> </ul> </li> </ul> </li> <li id='end'><em></em><a href='javascript:void(0);'>菜单_3_2</a> <ul> <li><em></em><a href='javascript:void(0);'>菜单_4_1</a> <ul> <li><a href='javascript:void(0);'>菜单_5_1</a></li> <li id='end'><a href='javascript:void(0);'>菜单_5_2</a></li> </ul> </li> <li id='end'><em></em><a href='javascript:void(0);'>菜单_4_2</a> <ul> <li><a href='javascript:void(0);'>菜单_5_1</a></li> <li id='end'><a href='javascript:void(0);'>菜单_5_2</a></li> </ul> </li> </ul> </li> </ul> </li> <li id='end'><em></em><a href='javascript:void(0);'>菜单_2_2</a> <ul> <li><em></em><a href='javascript:void(0);'>菜单_3_1</a> <ul> <li><em></em><a href='javascript:void(0);'>菜单_4_1</a> <ul> <li><a href='javascript:void(0);'>菜单_5_1</a></li> <li id='end'><a href='javascript:void(0);'>菜单_5_2</a></li> </ul> </li> <li id='end'><em></em><a href='javascript:void(0);'>菜单_4_2</a> <ul> <li><a href='javascript:void(0);'>菜单_5_1</a></li> <li id='end'><a href='javascript:void(0);'>菜单_5_2</a></li> </ul> </li> </ul> </li> <li id='end'><em></em><a href='javascript:void(0);'>菜单_3_2</a> <ul> <li><em></em><a href='javascript:void(0);'>菜单_4_1</a> <ul> <li><a href='javascript:void(0);'>菜单_5_1</a></li> <li id='end'><a href='javascript:void(0);'>菜单_5_2</a></li> </ul> </li> <li id='end'><em></em><a href='javascript:void(0);'>菜单_4_2</a> <ul> <li><a href='javascript:void(0);'>菜单_5_1</a></li> <li id='end'><a href='javascript:void(0);'>菜单_5_2</a></li> </ul> </li> </ul> </li> </ul> </li> </ul> </li> <li id='end'><em></em><a href='javascript:void(0);'>菜单_1_2</a> <ul> <li><em></em><a href='javascript:void(0);'>菜单_2_1</a> <ul> <li><em></em><a href='javascript:void(0);'>菜单_3_1</a> <ul> <li><em></em><a href='javascript:void(0);'>菜单_4_1</a> <ul> <li><a href='javascript:void(0);'>菜单_5_1</a></li> <li id='end'><a href='javascript:void(0);'>菜单_5_2</a></li> </ul> </li> <li id='end'><em></em><a href='javascript:void(0);'>菜单_4_2</a> <ul> <li><a href='javascript:void(0);'>菜单_5_1</a></li> <li id='end'><a href='javascript:void(0);'>菜单_5_2</a></li> </ul> </li> </ul> </li> <li id='end'><em></em><a href='javascript:void(0);'>菜单_3_2</a> <ul> <li><em></em><a href='javascript:void(0);'>菜单_4_1</a> <ul> <li><a href='javascript:void(0);'>菜单_5_1</a></li> <li id='end'><a href='javascript:void(0);'>菜单_5_2</a></li> </ul> </li> <li id='end'><em></em><a href='javascript:void(0);'>菜单_4_2</a> <ul> <li><a href='javascript:void(0);'>菜单_5_1</a></li> <li id='end'><a href='javascript:void(0);'>菜单_5_2</a></li> </ul> </li> </ul> </li> </ul> </li> <li id='end'><em></em><a href='javascript:void(0);'>菜单_2_2</a> <ul> <li><em></em><a href='javascript:void(0);'>菜单_3_1</a> <ul> <li><em></em><a href='javascript:void(0);'>菜单_4_1</a> <ul> <li><a href='javascript:void(0);'>菜单_5_1</a></li> <li id='end'><a href='javascript:void(0);'>菜单_5_2</a></li> </ul> </li> <li id='end'><em></em><a href='javascript:void(0);'>菜单_4_2</a> <ul> <li><a href='javascript:void(0);'>菜单_5_1</a></li> <li id='end'><a href='javascript:void(0);'>菜单_5_2</a></li> </ul> </li> </ul> </li> <li id='end'><em></em><a href='javascript:void(0);'>菜单_3_2</a> <ul> <li><em></em><a href='javascript:void(0);'>菜单_4_1</a> <ul> <li><a href='javascript:void(0);'>菜单_5_1</a></li> <li id='end'><a href='javascript:void(0);'>菜单_5_2</a></li> </ul> </li> <li id='end'><em></em><a href='javascript:void(0);'>菜单_4_2</a> <ul> <li><a href='javascript:void(0);'>菜单_5_1</a></li> <li id='end'><a href='javascript:void(0);'>菜单_5_2</a></li> </ul> </li> </ul> </li> </ul> </li> </ul> </li> </ul> </div> <script type="text/javascript"> (function(e){ for(var _obj=document.getElementById(e.id).getElementsByTagName(e.tag),i=-1,em;em=_obj[++i];){ em.onclick = function(){ //onmouseover var ul = this.nextSibling; 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