function checkValidity(sender) {
    var err = "";
    var password1 = "";
    var password2 = "";
    for (i = 0; i < sender.length; i++) {
        if ($("#" + sender[i].id).attr("required") != undefined) {
            if ($("#" + sender[i].id).val() == "") {
                err += "- " + sender[i].id.substring(3) + " is a required field\n";
            }

            if (sender[i].id == "regPassword") {
                if ($("#" + sender[i].id).val() != $("#regPassword2").val()) {
                    err += "- Your entered passwords do not match\n";
                }
            }
        }
    }

    if (err != "") {
        alert("There are errors with the form, please correct:\n\n" + err);
        return false;
    } else {
        return true;
    }
}