<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
<script type="text/javascript" language="javascript">
function Myfun() {
window.open("Compliaint.aspx", "target=_blank", "height=200,width=200,left=100");
}
</script>
</head>
<body onload="Myfun()" >
<form id="form1" runat="server" >
<div>
<asp:Label runat="server" ID="lblMsg" EnableViewState="false"></asp:Label>
</div>
</form>
</body>
</html
>