https://malyn-rada.gov.ua/modules/glyanec/compressor/misc/js/compressor.lazy.js?v=tm2ph2

1(function(){
2  'use strict';
3
4  document.addEventListener('lazybeforeunveil', function(e){
5    var image = e.target;
6
7    if (image.tagName == 'IMG') {
8      var width = image.getAttribute('width');
9      var height = image.getAttribute('height');
10      if (width > 0 && height > 0) {
11        var ratio = width / height;
12        var actualWidth = image.clientWidth;
13        var actualHeight = image.clientWidth / ratio;
14        image.style.width = actualWidth + 'px';
15        image.style.height = actualHeight + 'px';
16      }
17    }
18  });
19
20  document.addEventListener('lazyloaded', function(e){
21    var image = e.target;
22
23    if (image.tagName == 'IMG') {
24      image.style.width = '';
25      image.style.height = '';
26      if (image.nextElementSibling && image.nextElementSibling.classList.contains('lazy-wrapper')) {
27        image.nextElementSibling.parentElement.removeChild(image.nextElementSibling);
28      }
29    }
30  });
31})();