I would love another pair of eyes.

I have a problem that I can not seem to track down. I have supplied 3 links below. The first link contains just a wrapper and content.
The second contains the wrapper, content, and the nav. When I add the nav it seems to throw the content outside my wrapper. The third link is all the above with a clearing element added.

I have tried to contain the floats in the main navigation ul using display:block but than the drop downs appear all the time not just on hover. I added a clearing element after #mainnav(in content container) but than in IE 5 and 5.2 I can not float the images with in the content container.

This only seems to occur when using IE 5 and 5.2 for the MAC.

http://ceetox.bottown.com/one.html (this is what I would like to happen with the nav)
http://ceetox.bottown.com/two.html (this is not what I would like)
http://ceetox.bottown.com/three.html (with clearing element )

There is also a problem with the last image in the mainnav(furthest to the right) dropping down a line in IE5.5 for the PC.

Is there a better way to do this?

Any suggestion would be most appreciated.

John