[jQuery] Display background image in optgroup on IE

[jQuery] Display background image in optgroup on IE

Guys,
I'm wondering if any of you might have some kind of "jquery related" hack in order to be able to display background images in IE (6,7,8) for the OPTGROUP element.
I've been looking for a way to acomplish this everywhere with no luck.
I'll appreciate any leads.
Thanks!<br clear="all">
--
Rodrigo Alfonso