Dynamicweb js validation of create user

dwValidateCreateUserForm.js

// Find the code here: https://gist.github.com/3778099

function addClientSideValidation(sFormSelector, required, sErrorMessage) {
	if (typeof jQuery==='undefined') {
		alert('jQuery is required');
		return false;
	};
	required = (required.length===0) ? ['UserManagement_Form_Company', 'UserManagement_Form_Name', 'UserManagement_Form_Phone', 'UserManagement_Form_Address', 'UserManagement_Form_Zip', 'UserManagement_Form_City', 'UserManagement_Form_Country'] : required;
    jQuery(sFormSelector).submit(function(evt) {
        var bValid = true;
        for (var i = 0; i < required.length; i++) {
            var $this = jQuery('#' + required[i]);
            $this.removeClass('error');
            if (jQuery.trim($this.val()).length === 0) {
                if (bValid) $this.trigger('click');
                bValid = false;
                $this.addClass('error');
            };
        };
        if (sErrorMessage!=='' && !bValid) {
			alert(sErrorMessage);
			evt.preventDefault();
		};
        return bValid;
    });
};

addClientSideValidation('form[name="formName"]', '', 'The marked fields are required');