js效果之导航中英文转换

<!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=utf-8" />
<title>中英文双语导航菜单</title>
<style type="text/css">
* {margin:0;padding:0;}  
#nav{
padding: 10px 10px 0;
font-size: 12px;
font-weight: bold;
font-family:Arial, Helvetica, sans-serif,宋体;
margin: 1em 0 0;
list-style:none;
}

#nav li{
float: left;
margin-right: 1px;
}

#nav li a,#nav li a:hover span{
line-height: 20px;
text-decoration: none;
background: #DDDDDD;
color: #666666;
display: block;
width: 80px;
text-align: center;
overflow:hidden;
}

#nav li a span{display:none;}

#nav a:hover{
position: relative;
}

#nav a:hover span{
display:block;
position:absolute;
top: 0;
left: 0;
cursor: pointer;
}

#nav a:hover span{
    padding-top:2px;
}

#nav li a:hover,#nav li a:hover span{
color: #FFFFFF;
background: #DC4E1B;
}

#navbar{
background: #DC4E1B;
height: 8px;
overflow: hidden;
clear: both;
}

</style>
</head>

<body>
    <ul id="nav">
   <li><a href="index.html">Home<span>首　页</span></a></li>
   <li><a href="about.html">About us<span>关于我们</span></a></li>
   <li><a href="products.html">Products<span>产品展示</span></a></li>
   <li><a href="services.html">Services<span>售后服务</span></a></li>
   <li><a href="contact.html">Contact<span>联系我们</span></a></li>
</ul>
<div id="navbar"></div>
</body>
</html>