https://mui.ac.ir/modules/gva_blockbuilder/vendor/main.js?v=1.x

1(function ($) {
2   $.fn.gav_skrollr = function(s) {
3      var $w = $(window), 
4          loaded, 
5          skrollr = this
6          th = 200;
7       this.one("gav_skrollr", function() {
8         s.refresh();
9      });
10      function gav_skrollr() {
11         var inview = skrollr.filter(function() {
12           var $e = $(this);
13           var wt = $w.scrollTop(),
14               wb = wt + $w.height(),
15               et = $e.offset().top,
16               eb = et + $e.height();
17
18           return eb >= wt - th && et <= wb + th;
19         });
20         loaded = inview.trigger("gav_skrollr");
21         skrollr = skrollr.not(loaded);
22      }
23      $(window).on("scroll.gav_skrollr", gav_skrollr);
24   };
25   $(window).on('load', function(){
26      setTimeout(function() {
27         s = skrollr.init({forceHeight:!1,smoothScrolling:!1,mobileCheck:function(){return!1}});
28         if($('.skrollable.refresh').length){
29            $('.skrollable.refresh').gav_skrollr(s);
30         }
31      }, 50);
32   });
33})(jQuery);