function ValidateSubmit() {
	var message;
	var result;
	result = true;
	message = "The following errors occured:\n\n";

	if (document.form_submit.model_id.selectedIndex == 0) {
		message = message + "Please select a model.\n";
		result = false;
	}
	if (document.form_submit.txtSerialNumber.value == "") {
		message = message + "Please enter a serial number.\n";
		result = false;
	}

	if (result == false) {
		alert(message);
	}

	return result;
}

function Enter() {
	if (ValidateSubmit() == true) {
		document.form_submit.submit();
	}
}

function Reset() {
	document.form_submit.reset();
}