Dear Friend,
I changed you code little bit. Its working fine now. copy paste this code , it will work
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="script4.aspx.cs" Inherits="WebApplication1.script4" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html>
<body>
<script language="JavaScript">
function resetForm() {
document.getElementById("userForm").reset();
}
</script>
<form id="userForm" runat="server">
<input id="Text1" type="text" value="TEST FOR CLEAR" />
<input id="Checkbox1" checked="checked" type="checkbox" />
<input id="Radio1" checked="checked" type="radio" />
<br />
<input type="button" value="Reset all fields" onclick="resetForm()" />
<br />
<asp:Button ID="MyResetButton" runat="server" OnClick="Button1_Click" Text="MyResetButton" />
</form>
</body>
</html>
Regards,
Sabindas