https://www.vip-ins.net/img/~www.vip-ins.net/js/init.js

1$(document).ready(function(){
2   // cache the window object
3   $window = $(window);
4 
5   $('section[data-type="background"]').each(function(){
6     // declare the variable to affect the defined data-type
7     var $scroll = $(this);
8                     
9      $(window).scroll(function() {
10        // HTML5 proves useful for helping with creating JS functions!
11        // also, negative value because we're scrolling upwards                            
12        var yPos = -($window.scrollTop() / $scroll.data('speed'));
13         
14        // background position
15        var coords = '50% '+ yPos + 'px';
16 
17        // move the background
18        $scroll.css({ backgroundPosition: coords });   
19      }); // end window scroll
20   });  // end section function
21}); // close out script
22
23/* Create HTML5 element for IE */
24document.createElement("section");