Problem with alt images wrapping product page

I’m am just starting to set up my site. I have two sample products. One has a single image and looks fine in IE 7 and firefox. The other product has alternative images and it is causing the text and add to cart button to wrap beneath the images. This only happens in IE.

Can someone please help. I’ve been trying to sift through the styles.css for hours and can’t figure it out. The demo store looks fine.

Here is the problem product page:


Looks fine in Firefox but broken in IE 7.

Any ideas?