83638 Random Added to Gallery

I have an existing script that I need a small addition to to run a Gallery Random. I own a auction house and am in need of making my gallery Images Randomize so that it will constantly change each time someone refreshes or goes into it. I know it will probably only take about 30 minutes at the most to make or add in. It will need to be added into my [login to view URL], (1 line) [login to view URL] (coupe of places) my [login to view URL] ( 1 place) Any Help would be great. I have tried adding other randoms to it and they do not work, it has to be graduated into my existing scripting.