function validateEmail(email) {
	var re = /^([a-zA-Z0-9_\.\-\+])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
	if (!email.match(re)) { return (false); }
	return (true);
}

function emailValidator(source, arguments) { arguments.IsValid = validateEmail(arguments.Value); }

function validatePNum(sPNum) {
	var numbers = sPNum.match(/^(\d)(\d)(\d)(\d)(\d)(\d)(\d)(\d)(\d)(\d)(\d)(\d)$/);
	var checkSum = 0;
	var d = new Date();
	if (!isDate(sPNum.substring(0, 4), sPNum.substring(4, 6), sPNum.substring(6, 8))) { return false; }
	if (numbers == null) { return false; }
	var n;
	for (var i = 3; i <= 12; i++) {
		n = parseInt(numbers[i]);
		if (i % 2 == 0) { checkSum += n; }
		else { checkSum += (n * 2) % 9 + Math.floor(n / 9) * 9 }
	}
	if (checkSum % 10 == 0) { return true; }
	return false;
}

function getYear(y) { return (y < 1000) ? y + 1900 : y; }

function isDate(year, month, day) {
	month = month - 1; // 0-11 in JavaScript
	var tmpDate = new Date(year, month, day);
	if ((getYear(tmpDate.getYear()) == year) && (month == tmpDate.getMonth()) && (day == tmpDate.getDate())) { return true; }
	else { return false; }
}

function stripNonAlphanumeric(element) {
	element.value = element.value.replace(/[^A-Za-z0-9]/g, '');
}

function stripNonNumeric(element) {
	element.value = element.value.replace(/[^0-9]/g, '');
}

function openPrint(url, width, height) {
	window.open(url, '', 'width=' + width + ',height=' + height + ',location=1,menubar=0,scrollbars=1,toolbar=0');
}