Problem is in Animate background position.

First of all when using two coordinates X and Y script don;t work.

But when I use just X coordinate script working good in all browsers except IE8, and IE7

In IE8 and IE7 script always reset background position to 0;

This worked normally in jquery 1.3.2 but after that no.

I created some example on this link.

see link:

http://jsfiddle.net/XEKfG/19/