Looks very well in FF and Opera, The content div/container is dropped down by the size of menu container... On previous pages it looks fine. Any ideas? Here's link to page. http://testing.dneprimport.com/page/dogobedience/basic-dog-obedience
Instead of adding a hack you could also try to re-order your div's in the source code. Firefox usually doesn't care in which order you put your div's but when you have several boxes for example and you put the boxes in the source code from bottom to top IE might have some problems showing the page correctly because it expects the top box to appear first in the code