function checkform(f)
	{
		if (f.UsrName.value == "") 
		{
		alert("Please enter your Username");
		f.UsrName.focus();
		return (false);
		}
		
		if (f.chvUsrPwd.value == "") 
		{
		alert("Please enter your Password.");
		f.chvUsrPwd.focus();
		return (false);
			}
		
	}