"Floating" Photo Slide Show

[Zapp]

I own a SGP 5.0. Just one time, my 5.0 displayed my photos as thumbnails "floating" across the screen from left to right. I would say there were four or five photo thumbnails "floating" acroos the screen at any one time. Anyway, I've never seen this kind of "floating" slide show again. I've searched, but I can't find any directions to recreate this display. Does anyone have any ideas?