I have two sites that use the faux column background CSS technique. Both sites were built from the same CSS foundation with a wrapper DIV that has a background set and contains header, left, center and right DIVs.
Everything works fine in IE but the background stops halfway down in Firefox. I've heard that floated elements require different CSS to accomplish this, but all the explanations I've found say that the solution is to use the faux background technique, which is what I'm doing already.
The first site uses a background image and the second uses a background color.
http://wtonline.ag.org
http://leadersunlimited.ag.org