IE6/7 CSS formatting dies when loading html page with thickbox class

Hey,

I've made a html page to open up in thickbox, and I put it in the thickbox class with this link: http://www.lynchtree.foodmoney.glexia.net/services.html?height=550width=400.
It opens up just fine on safari/ff, but on IE there's no css formatting whatsoever on it. It just appears in a bulleted list with no div formatting or background images. I know it's not a CSS issue because if I navigate directly to the html page (http://www.lynchtree.foodmoney.glexia.net/services.html), the CSS formatting appears just fine in IE with no problems - there's only an issue when it opens up in thickbox.

This is for a commercial project and I'd rather make it text for SEO than plop an image in there, so if you have any suggestions it would be greatly appreciated!

Thanks!