css 有弹动效果的网页导航

<!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>这是一个导航</title> 
<style type="text/css"> 
#nav{ 
list-style:none; 
margin:0; 
padding:5px 0 0 0; 
background:#F0F0F0; 
} 
#nav li{ 
float:left; 
display:inline; 
margin-right:2px; 
} 
#nav a{ 
float:left; 
width:81px; 
height:28px; 
text-align:center; 
background:url(<A href="http://www.glzy8.com/upload/20091011190507833.gif" _ewebeditor_ta_href="http%3A%2F%2Fwww.glzy8.com%2Fupload%2F20091011190507833.gif">http://www.glzy8.com/upload/20091011190507833.gif</A>) no-repeat 0 -4px #F3602A; 
font:12px/24px '宋体'; 
color:#FFF; 
text-decoration:none; 
} 
#nav a:hover{ 
line-height:28px; 
background-position:0; 
} 
</style> 
</head> 
<body> 
<ul id="nav"> 
<li><a href="http://www.glzy8.com/web/" _ewebeditor_ta_href="http%3A%2F%2Fwww.glzy8.com%2Fweb%2F">网页制作</a></li> 
<li><a href="http://www.glzy8.com/flash/" _ewebeditor_ta_href="http%3A%2F%2Fwww.glzy8.com%2Fflash%2F">Flash教程</a></li> 
<li><a href="http://www.glzy8.com/photoshop/" _ewebeditor_ta_href="http%3A%2F%2Fwww.glzy8.com%2Fphotoshop%2F">Photoshop教程</a></li> 
<li><a href="http://www.glzy8.com/" _ewebeditor_ta_href="http%3A%2F%2Fwww.glzy8.com%2F">管理资源吧</a></li> 
</ul> 
</body> 
</html>

　　 [Ctrl+A 全选注:如需引入外部Js需刷新才能执行]

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