How to create the google plus one button effect using jquery?

Question

When you look at the results on the google search page, you can see the google plus one button animation when you hover over the link or link description for every result.

I was searching internet but was not able to find any tutorial how to achieve this effect on a image or element in general.

Any suggestion or link to tutorial using jquery?

Thanks in advance.

Answer 1

It is one image containing multiple frames. I assume The image is used as background via CSS and the background position is changed rapidly (through JavaScript) to create the animation effect.

The image is: