var formErrorMessage = "Submission error:\nAll fields are required for registration...";

function checkForm(fields) {
	return checkFields(fields);
}

function checkDVDForm() {
	fields = "8,15,9,10,20,21";
	return checkFields(fields);
}

function checkQuestionForm() {
	fields = "1,2,14,3,4,18,19";
	return checkFields(fields);
}

function checkWebcastForm() {
	fields = "5,16,6,7,22,23";
	return checkFields(fields);
}

function checkWhitepapersForm() {
	fields = "28,29,30,31,32,33";
	return checkFields(fields);
}

function checkFields(fFields) {
	fields = fFields.split(",");
	
	fReturn = true;
	fText = "";
	
	for (i=0; i<fields.length; i++) {
		if (document.getElementById("FIELD"+fields[i])) {	
			thisField = document.getElementById("FIELD"+fields[i]);
			if (thisField.value == "") {
				fReturn = false;
				thisField.className = "formWarning";
			} else {
				thisField.className = "";
			}
		}
	}	
	if (fReturn == false) {
		alert(formErrorMessage);
	}
	return fReturn;
}