gallery-lightbox.js

(function($) {
 
  // Initialize the Lightbox and add rel="gallery" to all gallery images when the gallery is set up using [gallery link="file"] so that a Lightbox Gallery exists
  $(".gallery a[href$='.jpg'], .gallery a[href$='.png'], .gallery a[href$='.jpeg'], .gallery a[href$='.gif']").attr('rel','gallery').fancybox();
 
})(jQuery);