function fchecknull() {
			if (sBW == "Microsoft Internet Explorer") {
				var orate = document.getElementById("UsrName");
				var opwd = document.getElementById("UsrPassword");
			}
			else if (sBW == "Netscape") {
				var orate = document.getElementById("UsrName");
				var opwd = document.getElementById("UsrPassword");
			}
			var vrate = trim(orate.value);
			if (vrate == ""){
				alert("User Name was not entered !!");
				orate.value = "";
				orate.focus();
				return false;
			}
			else if (trim(opwd.value) == ""){
				alert("Password was not entered !!");
				opwd.value = "";
				opwd.focus();
				return false;
			}
			else{
				return true;
			}
	}