编写三级折叠菜单_源码

文章类别：Javascript | 发表日期:2010-3-27 12:24:23

21视频教程网3月27日整理

<!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>无限级菜单</title>
<style type="text/css">
*,body,ul,li {margin:0;padding:0;list-style: none;}
body {font:12px Arial; background:#000;}
a { border:none; color:#FFF; text-decoration:none;}
.menu {width:980px; margin:auto; background:url("http://img2.pict.com/97/09/ae/3148414/0/menu.gif") repeat-x 0 0;}
#menu { padding-left:210px; background:url("http://img2.pict.com/97/09/ae/3148414/0/menu.gif") no-repeat 0 -36px; height:36px; }
#menu li { float:left;;}
#menu li a {display:block;clear:both;font-size:14px;padding-right:14px;}
#menu li a strong {display:inline-block; height:16px;padding:15px 0 5px 15px;overflow:hidden;}
#menu li a:hover,
#menu li a.ok {background:url("http://img2.pict.com/97/09/ae/3148414/0/menu.gif") no-repeat right -72px; }
#menu li a:hover strong,
#menu li a.ok strong{
  padding:8px 0 12px 15px;
  background:url("http://img2.pict.com/97/09/ae/3148414/0/menu.gif") no-repeat 0 -72px;
}
#menu li ul {display:none; width:125px;position:absolute;background-color:#D9D9D9;}
#menu li ul li { float:none;vertical-align:top; overflow:hidden;}
#menu li ul li a {
  float:left;
  width:115px;
  _float:none;
  _display:inline-block;
  padding:7px 0 4px 10px;
  text-align:left;
  font-size:12px;
  border-bottom:#000 1px solid;
  overflow:hidden;
}
#menu li ul li a:hover{ background-image:none; background-color:#F00;}
#menu li ul li ul {left:125px;}
</style>
<script language="javascript">
var Menu = ["menu"];
window.onload = function(){
var li = document.getElementById(Menu).getElementsByTagName("li");
for(var i=0;i<li.length;i++){
  var li_ul = li[i].getElementsByTagName("ul");
  if(li_ul.length){
   li[i].onmouseout = function(){
    this.getElementsByTagName("a")[0].style.backgroundColor = "";
    this.getElementsByTagName("ul")[0].style.display ="none";
   }
   if(li[i].parentNode.id!=Menu){
    li[i].onmouseover= function(){
     this.getElementsByTagName("a")[0].style.backgroundColor = "#F00";
     this.getElementsByTagName("ul")[0].style.display ="block";
    }
   }
  }
}
}
function ShowMenu(obj){
var li = document.getElementById(Menu).getElementsByTagName("li");
for(var c=0;c<li.length;c++){
  if(li[c].parentNode.id==Menu){
   li[c].getElementsByTagName("a")[0].className = "";
  }
}
obj.getElementsByTagName("a")[0].className = "ok";
obj.getElementsByTagName("a")[0].style.backgroundColor = "#F00";
obj.getElementsByTagName("ul")[0].style.display ="block";
}
</script>
</head>
<body>
<div class="menu">
<ul id="menu">
    <li onmouseover="javascript:ShowMenu(this)"><a href="javascript:void(0)"><strong>二级菜单B</strong></a>
  <ul>
   <li><a href="javascript:void(0)">二级菜单B_1</a>
    <ul>
     <li><a href="javascript:void(0)">二级菜单B_1_1</a>
      <ul>
       <li><a href="javascript:void(0)">二级菜单B_1_1_1</a></li>
       <li><a href="javascript:void(0)">二级菜单B_1_1_2</a></li>
       <li><a href="javascript:void(0)">二级菜单B_1_1_3</a></li>
       <li><a href="javascript:void(0)">二级菜单B_1_1_4</a></li>
       <li><a href="javascript:void(0)">二级菜单B_1_1_5</a></li>
       <li><a href="javascript:void(0)">二级菜单B_1_1_6</a></li>
      </ul>
     </li>
     <li><a href="javascript:void(0)">二级菜单B_1_1</a>
      <ul>
       <li><a href="javascript:void(0)">二级菜单B_1_2_1</a></li>
       <li><a href="javascript:void(0)">二级菜单B_1_2_2</a></li>
       <li><a href="javascript:void(0)">二级菜单B_1_2_3</a></li>
       <li><a href="javascript:void(0)">二级菜单B_1_2_4</a></li>
       <li><a href="javascript:void(0)">二级菜单B_1_2_5</a></li>
       <li><a href="javascript:void(0)">二级菜单B_1_2_6</a></li>
      </ul>
     </li>
     <li><a href="javascript:void(0)">二级菜单B_1_1</a>
      <ul>
       <li><a href="javascript:void(0)">二级菜单B_1_3_1</a></li>
       <li><a href="javascript:void(0)">二级菜单B_1_3_2</a></li>
       <li><a href="javascript:void(0)">二级菜单B_1_3_3</a></li>
       <li><a href="javascript:void(0)">二级菜单B_1_3_4</a></li>
       <li><a href="javascript:void(0)">二级菜单B_1_3_5</a></li>
       <li><a href="javascript:void(0)">二级菜单B_1_3_6</a></li>
      </ul>
     </li>
    </ul>
   </li>
   <li><a href="javascript:void(0)">二级菜单B_2</a>
    <ul>
     <li><a href="javascript:void(0)">二级菜单B_2_1</a></li>
     <li><a href="javascript:void(0)">二级菜单B_2_2</a></li>
     <li><a href="javascript:void(0)">二级菜单B_2_3</a></li>
     <li><a href="javascript:void(0)">二级菜单B_2_4</a></li>
     <li><a href="javascript:void(0)">二级菜单B_2_5</a></li>
     <li><a href="javascript:void(0)">二级菜单B_2_6</a></li>
    </ul>
   </li>
  </ul>
</li>

    <li onmouseover="javascript:ShowMenu(this)"><a href="javascript:void(0)"><strong>三级菜单C</strong></a>
  <ul>
   <li><a href="javascript:void(0)">三级菜单C_1</a>
    <ul>
     <li><a href="javascript:void(0)">三级菜单C_1_1</a>
      <ul>
       <li><a href="javascript:void(0)">三级菜单C_1_1_1</a></li>
       <li><a href="javascript:void(0)">三级菜单C_1_1_2</a></li>
       <li><a href="javascript:void(0)">三级菜单C_1_1_3</a></li>
       <li><a href="javascript:void(0)">三级菜单C_1_1_4</a></li>
       <li><a href="javascript:void(0)">三级菜单C_1_1_5</a></li>
       <li><a href="javascript:void(0)">三级菜单C_1_1_6</a></li>
      </ul>
     </li>
     <li><a href="javascript:void(0)">三级菜单C_1_1</a>
      <ul>
       <li><a href="javascript:void(0)">三级菜单C_1_2_1</a></li>
       <li><a href="javascript:void(0)">三级菜单C_1_2_2</a></li>
       <li><a href="javascript:void(0)">三级菜单C_1_2_3</a></li>
       <li><a href="javascript:void(0)">三级菜单C_1_2_4</a></li>
       <li><a href="javascript:void(0)">三级菜单C_1_2_5</a></li>
       <li><a href="javascript:void(0)">三级菜单C_1_2_6</a></li>
      </ul>
     </li>
     <li><a href="javascript:void(0)">三级菜单C_1_1</a>
      <ul>
       <li><a href="javascript:void(0)">三级菜单C_1_3_1</a></li>
       <li><a href="javascript:void(0)">三级菜单C_1_3_2</a></li>
       <li><a href="javascript:void(0)">三级菜单C_1_3_3</a></li>
       <li><a href="javascript:void(0)">三级菜单C_1_3_4</a></li>
       <li><a href="javascript:void(0)">三级菜单C_1_3_5</a></li>
       <li><a href="javascript:void(0)">三级菜单C_1_3_6</a></li>
      </ul>
     </li>
    </ul>
   </li>
   <li><a href="javascript:void(0)">三级菜单C_2</a>
    <ul>
     <li><a href="javascript:void(0)">三级菜单C_2_1</a></li>
     <li><a href="javascript:void(0)">三级菜单C_2_2</a></li>
     <li><a href="javascript:void(0)">三级菜单C_2_3</a></li>
     <li><a href="javascript:void(0)">三级菜单C_2_4</a></li>
     <li><a href="javascript:void(0)">三级菜单C_2_5</a></li>
     <li><a href="javascript:void(0)">三级菜单C_2_6</a></li>
    </ul>
   </li>
  </ul>
</li>
</ul>
</div>
</body>
</html>

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