function validateEmail(email) {
    var re = /^(([^<>()[\]\\.,;:\s@\"]+(\.[^<>()[\]\\.,;:\s@\"]+)*)|(\".+\"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/
    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; }
}