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<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!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 runat="server">
<title>无标题页</title>
<script language="javascript" type="text/javascript">
function xianshi()
{
document.getByElementID("#mytxt").style.display= " ";
}
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<input id="mytxt" type="text" runat="server" style="display:none"/>
<input id="but" type="button" value="button" onclick="return xianshi()" />
</div>
</form>
</body>
</html>