<!-- 把如下代码加入<body>区域中 -->
<center>
<table border=5 bordercolor=blue borderlight=green>
<tr>
<td align=center width=450 height=194>
<p align="left"><b><font color="#3333FF">代码如下:<br>
</font></b>代码如下:
<head><br>
<script language=javascript> <br>
<!--<br>
if ((navigator.appName == "Microsoft Internet Explorer") && (parseInt(navigator.appVersion) >= 4))<br>
{
document.write('<link rel=stylesheet type="text/css" href="<font color=red>ie.css</a>">')<br>
}
else {document.write('<link rel=stylesheet type="text/css" href="<font color=red>ns.css</font>">')}<br>
//-->
</script><br>
</head><br>
<p></p>
<br>
</td>
</tr>
</table></center>