javascript实现控制的多级下拉菜单

<!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>

<title>下拉菜单</title>

<meta http-equiv="content-Type" content="text/html;charset=utf-8">

<style type="text/css">

.navi ul {

padding: 0;

list-style-type: none;

}

.navi ul li {

text-align: center;

float: left;

position: relative;

width: 200px;

background-color: #0F8CFF;

}

a {

color: #086808;

text-decoration: none;

}

.navi ul li a {

display: block;

border: 1px solid #fff;

}

.navi ul li ul {

display: none;

left: 0;

}

.navi ul li ul li ul{

position: absolute;

left:200px;

top: 0;

}

.navi ul li:hover ul a {

color: yellow;

}

</style>

<script type="text/javascript">

function showNextMenu(obj){

var nextMenu = obj.getElementsByTagName("ul")[0];

nextMenu.style.display = "block";

}

function hideNextMenu(obj){

var nextMenu = obj.getElementsByTagName("ul")[0];

nextMenu.style.display = "none";

}

</script>

</head>

<body>

<div class="navi">

<ul >

<li class="li_1" onmousemove="showNextMenu(this);" onmouseout="hideNextMenu(this);">

<a href="javascript:;" >游戏</a>

<ul>

<li onmousemove="showNextMenu(this);" onmouseout="hideNextMenu(this);">

<a href="javascript:;" >传奇</a>

<ul>

<li>

<a href="javascript:;" >1</a>

</li>

<li>

<a href="javascript:;" >2</a>

</li>

<li>

<a href="javascript:;" >3</a>

</li>

</ul>

</li>

<li>

<a href="javascript:;" >传奇</a>

</li>

<li>

<a href="javascript:;" >传奇</a>

</li>

<li>

<a href="javascript:;" >传奇</a>

</li>

<li>

<a href="javascript:;" >传奇</a>

</li>

</ul>

</li>

<li class="li_1">

<a href="javascript:;" >游戏</a>

<ul>

<li>

<a href="javascript:;" >传奇</a>

</li>

</ul>

</li>

<li class="li_1">

<a href="javascript:;" >游戏</a>

<ul>

<li>

<a href="javascript:;" >传奇</a>

</li>

</ul>

</li>

<li class="li_1">

<a href="javascript:;" >游戏</a>

<ul>

<li>

<a href="javascript:;" >传奇</a>

</li>

</ul>

</li>

</ul>

</div>

</body>

</html>

效果图如下：