The images look very messed up. However I do not have any machines with IE9. When I test the demo site using IE 10 but set to IE 9 mode I am not able to reproduce the problem.
The problem does happen if I use IE 7 mode, but as discussed elsewhere on this site we are not concerned with supporting IE 7 and Artisteer (which is the tool used to create most of the skins on the demo site also doesn't care about IE 7 anymore).
If you have a particular need to support IE 7 you could download older skins made in Artisteer 3.1, because back then Artisteer did support IE 7. The older skins are in the extra-skins.zip on our codeplex download page if you need them.
Hope that helps,
Joe