Your IE is fine, It have to do with the CSS, which is a little bit confusing.

There are 2 Background images for the centerblock left and center. No position; no float; nothing, so it wouldn't expand .

One whole background picture would have done the job for the Expanding part

I have taken an Autotheme called 3col that was available for free and juiced up the boxes with rounded corners(still more work to be done before it is really ready though) but I seem to be experiencing something strange with IE on WinXP SP2 where if another window overlaps the top part of te center box, or if the window is minimized and then restored, it will "wipe" the dropshadow image away to a sold color. The CSS valid and the HTML is valid, it seems that it is IE that is not valid, so can anyone point me in the direction of a fix for this problem. You can grab a copy of the theme as it stands now at http://www.hideyhole.org/downloads/3col.zip and I would love to hear any tips you may have as to how to fix this problem.

Take Care,
Michael
http://www.hideyhole.org