TYPO3: open fancybox / lightbox with second image

The TYPO3-Extension cl_jquery_fancybox enhances the click-to-enlarge capability of with the beautiful “fancybox-effect”.

Sometimes you do not only want to enlarge the same picture, but you want to open a different image in the lightbox (thumbnail pictureOne.jpg opens picure2.jpg). You can add a file-link, but unfortunately the lightbox-effect disappears :(

Just add this line of code to typoscript and all images with a filelink get a lightbox-class:

(worked with TYPO3 6.1.6 & cl_jquery_fancybox 3.0.6)