转自：http://www.cnblogs.com/yzst/archive/2011/10/08/2201734.html
<html >
<head>
<meta http-equiv="Content-Type"
content="text/html; charset=utf-8"
/>
<title>无标题文档</title>
<style
type="text/css">
#menu ul{
font-family:Arial, Helvetica,
sans-serif;
font-size:14px;
padding:0px 0px 0px
8px;
margin:0px
auto;
list-style:none;
height:35px;
white-space:nowrap;
}
#menu
ul li{
float:left;
margin:0px 2px;
}
#menu
ul li
a{
display:block;
float:left;
line-height:35px;
color:#666;
text-decoration:none;
padding:0px
0px 0px 14px;
background:url(bj.gif);
}
#menu ul li a
b{
display:block;
padding:0px 14px 0px
0px;
background:url(bj.gif) no-repeat right top;
}
#menu ul
li a:hover{
color:#fff;
background:url(bj.gif) left
center;
}
#menu ul li a:hover b{
background:url(bj.gif)
right center;
}
#menu ul li.current
a{
color:#fff;
background:url(bj.gif) no-repeat left
bottom;
background:url(bj.gif) no-repeat right
bottom;
}
#menu ul li.current
a:hover{
background:url(bj.gif) no-repeat left
bottom;
cursor:default;
}
#menu ul li.current a:hover
b{
background:url(bj.gif) no-repeat right
bottom;
}
</style>
</head>
<body>
<div id="menu">
<ul>
<li><a
href="#"><b>Home</b></a></li>
<li><a
href="#"><b>Contact
Us</b></a></li>
<li><a href="#"><b>Web
Dev</b></a></li>
<li><a href="#"><b>Web
Design</b></a></li>
<li class="current"><a
href="#"><b>Map</b></a></li>
</ul>
</div>
</body>
</html>
原文：http://www.cnblogs.com/cugwx/p/3590506.html