Hiya,
It displays OK in FireFox,but not IE.
You don't have a Document Type above the head of your page. Try adding this right at the beginning of your page (in code view):
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">