IE9 scrolling to top when css:hover has an color attribute

I'开发者_如何学Pythonve found a really strange bug; See my sample at http://lunchbestellen.bekijkonzesite.nl/test/index . When you scroll down and hover over an element the scrollbar goes back to the top. When I remove the hover-styles in the CSS it doesn't. Somebody please help... I'm pulling my hair out.

With regards, Jeroen