代码简介：总体不错，很简约的风格。
代码内容：
<html>
<head>
<title>JS+CSS实现非常棒的简约风格下拉菜单_网页代码站(www.webdm.cn)</title>
<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=="SPAN") {
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;
}
div#nav{
border-left: 1px solid #ccc;
}
span {
margin: 0px;
padding: 0px;
list-style: none;
120px; /* Width of Menu Items */
position: relative;
border: 1px solid #ccc;
border-left: 0px;
}
span div span {
border: 1px solid #ccc;
border-top: 0px;
}
span div {
position: absolute;
left: -1px;
top: 24px; /* Set 1px less than menu width */
display: none;
}
/* Styles for Menu Items */
div span a {
100%;
text-decoration: none;
color: #777;
background: #fff; /* IE6 Bug */
padding: 5px;
}
div span a:hover { color: #E2144A; background: #f9f9f9; } /* Hover Styles */
span div span a { padding: 2px 5px; } /* Sub Menu Styles */
span:hover div, span.over div { display: inline; } /* The magic */
</style>
</head>
<body>
<div id="nav">
<span><a href="#">Home</a>
<div>
</div>
</span>
<span><a href="#">About</a>
<div>
<span><a href="#">History</a></span>
<span><a href="#">Team</a></span>
<span><a href="#">Offices</a></span>
</div>
</span>
<span><a href="#">Services</a>
<div>
<span><a href="#">Web Design</a></span>
<span><a href="#">Internet Marketing</a></span>
<span><a href="#">Hosting</a></span>
<span><a href="#">Domain Names</a></span>
<span><a href="#">Broadband</a></span>
</div>
</span>
<span><a href="#">Contact Us</a>
<div>
<span><a href="#">United Kingdom</a></span>
<span><a href="#">France</a></span>
<span><a href="#">USA</a></span>
<span><a href="#">Austraspana</a></span>
</div>
</span>
</div>
</body>
</html>
<br>
<p><a href="http://www.webdm.cn">网页代码站</a> - 最专业的代码下载网站 - 致力为中国站长提供有质量的代码！</p>
代码来自：http://www.webdm.cn/webcode/ceebd815-9dec-4713-9ec8-163cb7bebe2b.html