以下是引用片段：
<head>
<script>
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>
<style>
body {
font: normal 11px verdana;
}
ul {
margin: 0;
padding: 0;
list-style: none;
width: 150px; /* Width of Menu Items */
border-bottom: 1px solid #ccc;
}
ul li {
position: relative;
}
li ul {
position: absolute;
left: 149px; /* Set 1px less than menu width */
top: 0;
display: none;
}
/* Styles for Menu Items */
ul li a {
display: block;
text-decoration: none;
color: #777;
background: #fff; /* IE6 Bug */
padding: 5px;
border: 1px solid #ccc;
border-bottom: 0;
}
/* Fix IE. Hide from IE Mac \*/
* html ul li { float: left; height: 1%; }
* html ul li a { height: 1%; }
/* End */
ul li a:hover { color: #E2144A; background: #f9f9f9; } /* Hover Styles */
li ul li a { padding: 2px 5px; } /* Sub Menu Styles */
li:hover ul, li.over ul { display: block; } /* The magic */
</style>
</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> | 
