Hi!
there is no 3d on this site..
all is realized in 2d with some zoom effect when you click on a thumbnail...
the interesting thing is the repositioning of the previews based on the browser width..
I think that you can easily work on that taking a look at this tutorial for shapes positioning:
Positioning shapes using a loop
the rest of the effect is done by increasing the scaleX and scaleY preperties on a vector rectangle..
hope it helps..