https://www.socreklama.ru/bitrix/js/zoomi.js

1// zoomi - A zoom for images ~ Sean Catchpole - Version 0.9
2(function($){
3
4$.fn.zoomi = function() {
5  $(this).filter("img").each(function(){
6    if(!this.z) {
7      $(this).zoom1().mouseover(function(){$(this).zoom2().show();});
8      $(this.z).mouseout(function(){$(this).hide();}); }
9  });
10 return this;
11}
12
13$.fn.zoom1 = function() {
14  $(this).each(function(){
15    var e = this;
16    $(e).css({'position':'relative','z-index':'8'}).after('<img class="'+e.className+'">');
17    e.z = e.nextSibling;
18    $(e.z).removeClass("zoomi").addClass("zoom2").attr("src",e.alt || e.src)
19    .css({'position':'absolute','z-index':'10'});
20    $(e.z).hide();
21  });
22  return this;
23}
24
25$.fn.zoom2 = function() {
26  var s = [];
27  this.each(function(){
28    var e = this;
29    if(!e.z) e = $(e).zoom1()[0]; s.push(e.z);
30    if(!e.z.complete) return;
31    if(!e.z.width) { $(e.z).show(); e.z.width=e.z.width; $(e.z).hide(); }
32    $(e.z).css({left:$(e).offsetLeft()-(e.z.width-e.scrollWidth)/2+'px',
33    top:$(e).offsetTop()-(e.z.height-e.scrollHeight)/2+'px'});
34  });
35  return this.pushStack(s);
36}
37
38$.fn.offsetLeft = function() {
39  var e = this[0];
40  if(!e.offsetParent) return e.offsetLeft;
41  return e.offsetLeft + $(e.offsetParent).offsetLeft(); }
42
43$.fn.offsetTop = function() {
44  var e = this[0];
45  if(!e.offsetParent) return e.offsetTop;
46  return e.offsetTop + $(e.offsetParent).offsetTop(); }
47
48$(function(){ $('img.zoomi').zoomi(); });
49
50})(jQuery);