框架网页关闭左菜单

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="top.aspx.cs" Inherits="top" %>

<!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>
    <title>Top</title>
<style type="text/css">
a:link { color:#000000;text-decoration:none}
a:hover {color:#666666;}
a:visited {color:#000000;text-decoration:none}
td {font-size:9pt; filter:dropshadow(color=#FFFFFF,offx=1,offy=1); color:#000000; }
img {filter:alpha(opacity:100); chroma(color=#FFFFFF)}
</style>
<base target="right"/>
<script type="text/javascript" language="javascript">
<!--
var dvnews_majorVer=3.2;
var dvnews_minorVer=1216;
var dvnews_beta=false;

function preloadImg(src)
{
	var img=new Image();
	img.src=src
}
preloadImg("image/admin_top_open.gif");

<asp:Literal id="ltScript" runat="server"/>

var displayBar=true;
function switchBar(obj)
{
	if (displayBar)
	{
		parent.frame.cols="0,*";
		displayBar=false;
		obj.src="image/admin_top_open.gif";
		obj.title="打开左边管理菜单";
	}else{
		parent.frame.cols="180,*";
		displayBar=true;
		obj.src="image/admin_top_close.gif";
		obj.title="关闭左边管理菜单";
	}
}
-->
</script>  </head>
<body background="image/admin_top_bg.gif" style="margin:0px">

<table height="100%" width="95%" border="0" cellpadding="0" cellspacing="0">
<tr valign="middle">
	<td width="50">
	<img onclick="switchBar(this)" src="image/admin_top_close.gif" alt="关闭左边管理菜单" style="cursor:hand" />
	</td>
	<td>管理系统</td>
</tr>
</table>
</body>
</html>

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