Fix lightbox prev/next arrow keys

static/functions/global.js

   e = e || window.event
   if (e.keyCode == 37 || e.keyCode == 39) {
     if ($('#lightbox').raw() && !$('#lightbox').raw().classList.contains('hidden')) {
-      ($('[id!="lightbox"] > [src="'+$('#lightbox > img').raw().src+'"]').raw()[((e.keyCode==39)?'next':'previous')+'Sibling'].onclick||function(){})()
+      ($('[id!="lightbox"] > [src="'+$('#lightbox > img').raw().src+'"]').raw()[((e.keyCode==39)?'next':'previous')+'Sibling'].click()||function(){})()
     }
   }
 }