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一款兼容性很好的标准二级css下拉菜单

2015-01-19 15:23 627 查看
<!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" lang="zh-CN">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>一款兼容性很好的标准二级css下拉菜单</title>
<style type="text/css">
<!--
* {
margin:0;
padding:0;
border:0;
}
body {
font-family: arial, 宋体, serif;
font-size:12px;
}
#nav {
line-height: 24px;
list-style-type: none;
background:#666;
}
#nav a {
display: block;
width: 80px;
text-align:center;
}
#nav a:link {
color:#666;
text-decoration:none;
}
#nav a:visited {
color:#666;
text-decoration:none;
}
#nav a:hover {
color:#FFF;
text-decoration:none;
font-weight:bold;
}
#nav li {
float: left;
width: 80px;
background:#CCC;
}
#nav li a:hover {
background:#999;
}
#nav li ul {
line-height: 27px;
list-style-type: none;
text-align:left;
left: -999em;
width: 80px;
position: absolute;
}
#nav li ul li {
float: left;
width: 80px;
background: #F6F6F6;
}
#nav li ul a {
display: block;
width: 80px;
text-align:center
}
#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><!--//--><![CDATA[//><!--
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>
<body>
<ul id="nav">
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</html>
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