function AddValidateRequired(field, message) {
    $("#" + field).blur(function() { ValidateRequired(field, message); });
    $("#" + field).parents("form").submit(function() { return ValidateRequired(field, message); });
}

function ValidateRequired(field, message) {
    if ($("#" + field + ":visible").length > 0) {
        var content = $("#" + field).val();
        var valMessage = $("#" + field).parent().find(".validationMessage");
        if (content.length == 0) {
            valMessage.text(message);
            return false;
        } else {
            valMessage.text("");
            return true;
        }
    }
    return true;
}