简单的css二级下拉菜单
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>经典CSS二级下拉菜单</title>
<style type="text/css">
<!--
*{margin:0;padding:0;border:0;}
body {
font-size:12px;
}
#nav {
line-height: 24px; list-style-type: none; background:#666;
}
#nav a {
display: block; width: 80px; text-align:center;
}
#nav li {
float: left; width: 80px; background:#CCC;
}
#nav li ul {
line-height: 27px; list-style-type: none;text-align:left;
left: -999em; width: 180px; position: absolute;
}
#nav li ul li{
float: left; width: 180px;
background: #F6F6F6;
}
#nav li ul a{
display: block; width: 178px;w\idth: 156px;text-align:left;padding-left:24px;
}
#nav li ul a:link {
color:#666; text-decoration:none;
}
#nav li ul a:visited {
color:#666;text-decoration:none;
}
#nav li ul a:hover {
color:#F3F3F3;text-decoration:none;font-weight:normal;
background:#C00;
}
#nav li:hover ul {
left: auto;
}
#nav li.sfhover ul {
left: auto;
}
#content {
clear: left;
}
-->
</style>
<script 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? " ": "") + "sfhover";
}
sfEls[i].onMouseDown=function() {
this.className+=(this.className.length>0? " ": "") + "sfhover";
}
sfEls[i].onMouseUp=function() {
this.className+=(this.className.length>0? " ": "") + "sfhover";
}
sfEls[i].onmouseout=function() {
this.className=this.className.replace(new RegExp("( ?|^)sfhover\\b"),
"");
}
}
}
window.onload=menuFix;
//--><!]]></script>
</head>
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