As of now pictures are partially within a popup-window enhanced presentable. I use the Lightbox2 – script which you can get here
. Enlargeable pictures are marked on the the right of the bottom by this symbol:
If several pictures on a site are marked by this symbol the pictures will be open in a gallery. If you move the cursor to the left or right side of the picture a button ‚ Prev ‚ or ‚ Next ‚ will be shown. By clicking on the buttons you will get to the previous or next picture. A navigation is also possible by pushing the keys ‚P‘ (for previous) or ‚N‘ (for next) and alternatively by pushing the cursor keys ‚left‘ or ‚right‘.