var Qs_Form_Extend = {
    onSubmitSuccess: function (response, form)
    {
        var id = $(form).attr('id');
        Qs_Form.setFormOption(id, 'response', response)
        if (response.isValid) {
            if (form) {
                var onSuccessCallback = Qs_Form.getFormOption($(form).attr('id'), 'onSuccessCallback');
                if (typeof onSuccessCallback == 'undefined') {
                    updateFieldsValue();
                    form.submit();
                } else {
                    Qs_Form.callExternal(onSuccessCallback);
                }
            }
        } else {
            var onErrorCallback = Qs_Form.getFormOption($(form).attr('id'), 'onErrorCallback');
            if (typeof onErrorCallback != 'undefined') {
                Qs_Form.callExternal(onErrorCallback);
                return true;
            }
            Qs_Form.displayErrors(id);
        }
        return response;
    },

    initExtendForm: function ()
    {        
        $.extend(Qs_Form, Qs_Form_Extend);
    }
}