This is the extension "perfectlightbox" to be used within TYPO3.
Title: Perfect Lightbox
Description: Click-enlarge images with a lightbox/slimbox based on JQUERY in TYPO3! Single images, imagesets, presentation mode and slideshow supported. Options can be set for each content-element. No XCLASS, just typoscript. Valid html. Flexible configuration. Easy integration into any gallery you like.