In the program code written in Simple HTML(Hyper Text Markup Language) & JavaScript. The Login form will disable with in 5 seconds. The program code save .aspx extension . That program run at asp server.
<html>
<head runat="Server">
<title></title>
<script type="text/javascript">
function HideLable()
{
document.getElementById("message").innerHTML="Login Form Expried";
}
setTimeout("HideLable();",5000); // 5000 means 5 seconds.
</script>
</head>
<body>
<form id="form1" runat="Server">
<div id="message"> This Login form will expired in 5 seconds.<br>
<Lable> Username</Lable>
<input type="text"></input>
<Lable>Password</Lable>
<input type="text"></input>
<asp:LinkButton Text="Submit" runat="server" />
</div>
</form>
</body>
</html>