DIV CSS打造背景图片超级翻转网页导航菜单

<!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">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>www.gaoqian.com</title>
<style>
* {
margin:0;
padding:0;
font-size:12px;
text-align:center;
}
body {
background:#ffff;
}
#nav {
width:700px;
margin:20px auto 0 auto;
}
#nav li {
display:inline;
list-style-type:none;
}
#nav li a:link,#nav li a:visited {
float:left;
margin-right:1px;
height:26px;
line-height:26px;
padding:0 8px;
text-decoration: none;
color:#333;
background:url(/upfiles/20070623/20070623141540_link.jpg);
}
#nav li a:hover {
color:#000;
background:url(/upfiles/20070623/20070623141520_hover.jpg);
}
#home #nav li a#cur1,#divcss #nav li a#cur2,#csslayout #nav li a#cur3,#css20 #nav li a#cur4,#websites #nav li a#cur5,#moban #nav li a#cur6 {
color:#fff;
background:url(/upfiles/20070623/20070623141450_current.jpg);
}
#topline {
width:100%;
height:3px;
overflow:hidden;
background:#06f;
}
#content {
width:680px;
margin:18px auto 0 auto;
text-align:left;
color:#000;
}
</style>
</head>
<body id="home">
<ul id="nav">
    <li><a href="" id="cur1">knowsky.com 首页</a></li>
    <li><a href="/htmldata/sort/2.html" id="cur2">建设网站指南</a></li>
    <li><a href="/htmldata/sort/3.html" id="cur3">网页制作教程</a></li>
    <li><a href="/htmldata/sort/4.html" id="cur4">动画制作教程</a></li>
    <li><a href="/htmldata/sort/6.html" id="cur5">网络编程教程</a></li>
    <li><a href="/htmldata/sort/15.html" id="cur6">视频教程观看</a></li>
</ul>
<div id="topline"></div>
<div id="content">
现在的位置: <strong>home</strong> (knowsky.com 首页)
</div>
</body>
</html>