Clicking on a zoomed/overlayed image closes the overlay. Under the image, there are links to go to previous/next image.
Is it possible to make it so that clicking on left side of image takes to previous, right to next and center closes it? A bit like it works in Facebook albums, or here:
http://www.lokeshdhakar.com/projects/lightbox2/ (click on an image under image set)
http://fancybox.net/ (click on an image under image gallery)