Google Gravity: A neat trick?

Google Gravity seems like nothing but a neat trick or an April's Fool Prank only that it's not April and there's no occasion. But the fact is that Google Gravity is nothing more than a prank for the internet folk.

Go to this page,http://mrdoob.com/projects/chromeexperiments/google_gravity/ and you'll find your screen showing a fake google search page with objects first being in their place then falling down like as if there was gravity affecting them within the page.

They will fall to the ground and bounce off a few times before actually settling down. That's all there is to it.

Here's a youtube video to illustrate this,