kitajchuk/jQuery-backgroundPosition-for-Internet-Explorer — pull request #1 by barneyfoxuk (2012-10-02 11:55:44+00:00)
Title: Added conditional for I.E. version 8 and below

Ello mate,

Looks like IE9 handles backgroundPosition as you would expect it to, so the script was actually stopping default behaviour working on that version.

I've added an additional conditional at the start of the script to check if the version of IE is 8 or below, and this seems to fix the problem.

Might be nice at some point in future run the script based upon backgroundPosition existing, rather than based upon the browser as I have a feeling early versions of Firefox also have some issues with it...