Step 1:

Open Silverback.

Step 2:

Resize slowly your browser window (Firefox, Opera, Safari, IE7 are all ОК) and…

Step 3:

…watch the effect. Cool!

There’s a discussion on how the quasi-3D effect was achieved using CSS + half-transparent PNG graphics — to me it reminds me the old video games; and looking at Steve, I instantly think of Nintendo’s Donkey Kong!

CSS rullz! ;-)