MSIE 7 Gallery Bug?

I thought I’d started a new thread, but in my profile, I see I must have posted this in the wrong place. So here goes, again.

I have a page on one of the websites I manage which is having display problems on IE7. The posts are all images, which I’ve used the gallery shortcut to post. It displays fine on firefox, but on IE7 some of the posts are half or completely blacked out. The page is: http://wisconsinbirthcenter.com/?page_id=65