jQuery(document).ready(function($){

    $('#order_form form').on('submit', function(){
            add_result();
      $('#form_order_submit').prop("disabled", true);
            return false;
        });

        //функция добавления вопроса
        function add_result(){
            $.ajax({
                type: "POST",
                url: "/ajax/request/ajax_order.php",
                data: 'NAME=' + $("#feedback_NAME").val() + '&SECOND_NAME=' + $("#feedback_SECOND_NAME").val() + '&PHONE=' + $("#feedback_PHONE").val()  + '&FLAT_NUMBER=' + $("#feedback_FLAT_NUMBER").val() + '&COMMENT=' + $("#feedback_COMMENT").val() + '&CITY=' + $("#feedback_CITY").data("name") + '&HOUSE=' + $("#feedback_HOUSE").val() + '&STREET=' + $("#feedback_STREET").val() + '&TARIFS=' + $(".best-deal__name").text(),
                cache: false,
                dataType : "json",
                success: function (data) {
                    setThanks();
                    return false;
                }
            });

            function setThanks() {
                $('html,body').animate({
                  scrollTop: $('.order__form-section').offset().top
                }, 1000, function (argument) {
                    $(".order__form form").hide('slow');
                    $(".thanks_message").show('slow');
                });
            }
        }

<?if($_SESSION["CHECK_RESULT"]["founded"] == "Y"):?>
  $('.order__form-section .custom-select').hide();
<?endif;?>
    });