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http://www.cnblogs.com/firstyi/archive/2008/03/13/1103970.html
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http://www.cnblogs.com/firstyi/archive/2007/08/15/856676.html
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<%@ Control Language="C#" AutoEventWireup="true" CodeFile="wcontrol.ascx.cs" Inherits="wcontrol" %>
<script type ="text/javascript">
function PopupCalendar(InstanceName)
{
///Global Tag
this.instanceName=InstanceName;
///Properties
this.separator="-"
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using System.IO;
using System.IO.Compression;
using ICSharpCode.SharpZipLib.Zip;
using ICSharpCode.SharpZipLib.GZip;
using ICSharpCode.SharpZipLib.Checksums;
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