saschaheintze.js

$(document).ready(function(){
  $("a[class*='zoom']").fancybox({
   imageScale: true,
   zoomOpacity: true,
   overlayShow: true,
   overlayOpacity: 1,
   zoomSpeedIn: 250,
   padding: 0,
   centerOnScroll: false,
   callbackOnStart: function(){
    $('#container').hide();
   },
   callbackOnClose: function(){
    $('#container').show();
   }
  });
});