https://www.corporatekeysaustralia.com.au/__assets/js/search-listing/sticky-filter.js?v=01042018

1jQuery(document).ready(function(){
2  
3
4  function initStickyFilter() {
5    //.filter-form gone for search listing
6    var filter = $(".filter-form");
7    var w =  $( window );
8    var wHeight = w.height();
9    var filterFormTopOffset = 276;
10    var bodyHeight = $("body").height();
11    var maxScroll = bodyHeight - 1500; // 500 is an imaginary offset  
12    var browserHeightLimit = 900; // disable on laptops and small browser
13
14    //console.log(w.height());
15
16    w.scroll(function( e ) {
17
18      var scrollY = w.scrollTop();
19
20      if(scrollY >= maxScroll || wHeight < browserHeightLimit) return 0;
21
22      if(scrollY > filterFormTopOffset) {
23        filter.css("margin-top", scrollY - filterFormTopOffset);
24      } else {
25        filter.css("margin-top", 0); 
26      }
27
28
29    });
30      
31  }
32
33  //scroll gone longstay
34  //Aaron: 
35  if($("body").hasClass("long-stay-gone")) initStickyFilter();
36
37
38});