CSS垂直树形下拉菜单,挺漂亮

<!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>无标题文档</title>

<style type="text/css">
<!--
ul {
 font-size: 12px;
}
ul {
 margin: 0;
 padding: 0;
 list-style: none;
 width: 150px;
 border-bottom: 1px solid #ccc;
}
ul li {
 position: relative;
}
li ul {
 position: absolute;
 left: 149px;
 top: 0;
 display: none;
}
ul li a {
 display: block;
 text-decoration: none;
 color: #777;
 background: #fff;
 padding: 5px;
 border: 1px solid #ccc;
 border-bottom: 0;
}
/* Fix IE. Hide from IE Mac /*/
 * html ul li { float: left; }
 * html ul li a { height: 1%; }
/* End */
li:hover ul { display: block; }
li:hover ul, li.over ul {   display: block; }
-->
</style>
<script language="javascript">
startList = function() {
 if (document.all&&document.getElementById) {
  navRoot = document.getElementById("nav");
  for (i=0; i<navRoot.childNodes.length; i++) {
   node = navRoot.childNodes[i];
   if (node.nodeName=="LI") {
    node.onmouseover=function() {
     this.className+=" over";
    }
    node.onmouseout=function() {
     this.className=this.className.replace (" over", "");
    }
   }
  }
 }
}
window.onload=startList;
</script>
</head>

<body>
<ul id="nav">
 <li><a href="#">Home</a></li>
 <li><a href="#">About</a>
  <ul>
   <li><a href="#">History</a></li>
   <li><a href="#">Team</a></li>
   <li><a href="#">Offices</a></li>
  </ul>
 </li>
 <li><a href="#">Services</a>
  <ul>
   <li><a href="#">Web Design</a></li>
   <li><a href="#">Internet Marketing</a></li>
   <li><a href="#">Hosting</a></li>
   <li><a href="#">Domain Names</a></li>
   <li><a href="#">Broadband</a></li>
  </ul>
 </li>
 <li><a href="#">Contact Us</a>
  <ul>
   <li><a href="#">United Kingdom</a></li>
   <li><a href="#">France</a></li>
   <li><a href="#">USA</a></li>
   <li><a href="#">Australia</a></li>
  </ul>
 </li>
</ul>
</body>
</html>

自己慢慢看啦~~

你可能感兴趣的:(html,css,function,XHTML,文档,float)