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<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>黑色多级弹出菜单 - Javascript经典专区</title>
<style>
body {
margin: 7px;
font:12px Verdana, Arial, Helvetica, sans-serif;
}
* {
list-style-type: none;
margin: 0px;
padding: 0px;
border: thin none;
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#nav {
position: absolute;
font-size: 11px;
opacity: 0.8;
}
#nav a {
display: block;
100px;
height: 15px;
padding: 3px 5px 12px;
background: #666;
color: #fff;
text-decoration: none;
}
#nav a:hover {
background: #333;
}
#nav li {
float: left;
clear: left;
120px;
background: #ccc;
padding-bottom: 3px;
}
#nav ul {
position: absolute;
margin-left: 115px;
margin-top: -30px;
}
#nav ul {
display: none;
}
#nav li.show ul {
display: block;
}
#nav li.show li ul {
display: none;
}
#nav li li.show ul {
display: block;
}
</style>
<script language="javascript" type="text/javascript">
function menuFix() {
var sfEls = document.getElementById("nav").getElementsByTagName("li");
for (var i=0; i<sfEls.length; i++){
sfEls[i].onmouseover=function(){
this.className+=(this.className.length>0? " ": "") + "show";
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sfEls[i].onmouseout=function() {
this.className=this.className.replace(new RegExp("( ?|^)show\\b"), "");
}
}
}
window.onload=menuFix;
</script>
</head>
<body>
<ul id="nav">
<li><a>1</a><ul><li><a>1_1</a><ul><li><a>1_1_1</a></li>
<li><a>1_1_2</a></li>
<li><a>1_1_3</a></li>
<li><a>1_1_4</a></li></ul></li>
<li><a>1_2</a></li>
<li><a>1_3</a></li>
<li><a>1_4</a></li></ul></li>
<li><a>2</a><ul><li><a>2_1</a></li>
<li><a>2_2</a></li>
<li><a>2_3</a></li>
<li><a>2_4</a></li></ul></li>
<li><a>3</a></li>
<li><a>4</a></li>
</ul>
</body>
</html>