One pixel line between body and wrapper

I have been developing a site for a client and there is an annoying 1 pixel gap between the image I’ve used as the background in the body and the background image that I’ve used in the wrapper div.

Safari does not display it, only IE 6+ and Firefox.

Here’s a link:

http://www.bowmankelley.com/hemostatix/index.html

Thanks for any help.