Using jquery to realize character avatar following mouse rotation _jquery

A very clever character avatar follow the mouse rotation effect, in the browser screen, the face of the characters are always facing the mouse rotation. The realization of the principle that the same picture to make the characters up and down on different aspects of the effect of using JS to call the location of the background picture, in order to achieve the character "turned" jquery effect.
First show you the effect map, need friends can download the source code

Effect Demo Source Download

The actual implementation process is not much said, directly to everyone paste code.

The code is as follows:

<! DOCTYPE HTML PUBLIC "-//W3C//DTD XHTML 1.0 transitional//en" "Http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd ">  

The above code is based on jquery to achieve the avatar follow the mouse rotation, I hope you like.