https://komplektadr.ru/bitrix/templates/aspro_max/js/mega_menu.js

1window.addEventListener("DOMContentLoaded", function () {
2  const $megaMenuWrapper = document.querySelectorAll(".menu-block, .menu-only");
3
4  if ($megaMenuWrapper.length) {
5    for (let i = 0; i < $megaMenuWrapper.length; i++) {
6      $megaMenuWrapper[i].addEventListener(
7        "mouseover",
8        function () {
9          // calculate menu items position
10          $megaMenuWrapper[i].querySelector(".mega-menu").classList.add("visible");
11          CheckTopVisibleMenu();
12          InitMenuNavigationAim();
13
14          // init banner
15          const $bannerMenu = $megaMenuWrapper[i].querySelectorAll(".owl-carousel-hover");
16          if ($bannerMenu.length) {
17            $bannerMenu.forEach(($el) => {
18              $el.classList.remove("owl-carousel-hover");
19              $el.classList.add("swiper");
20
21              setTimeout(function () {
22                initSwiperSlider();
23                $el.classList.remove("loader_circle");
24              }, 1);
25            });
26          }
27        },
28        {
29          once: true,
30        }
31      );
32    }
33  }
34});