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Well - I for one don;t understand what you want to know:
1. your weblink to photos brings up a nice album. I click on a photo and it popsup with arrows to move to the next photo just fine.
The discussion you sent me to is in german - I don't speak german so I haven't a clue what this is about - perhaps the XOOPS german support site is where you need to ask - click on local support to get there.