message: Added support for video preloading when adding elements to a lightbox
diff: }
  },
  - _preloadVideos = function () {
  - targets.each(function() {
  + _preloadVideos = function (elements) {
  + elements.each(function() {
  var videoOptions = $(this).data('ilb2Video');
  if (videoOptions) {
  var id = $(this).data('ilb2Id');
  _openHistory();
  - _preloadVideos();
  + _preloadVideos(targets);
  this.addToImageLightbox = function (elements) {
  _addTargets(elements);
  + _preloadVideos(elements);
  };
  this.openHistory = function() {
  