I have a test page, with the nav for a site the top and some sample gif images below used as background images with some of the gif transparent. Using my Linux IE7 test browser, I get a white background behind the nav bar at the top, and the gifs below go wonky or dissapear entirely when scrolling them past the top edge of the viewport and back down again like this screenshot: http://www.mgwebservices.ca/test/images/ie7.jpg Can anyone with IE 7 on Windows replicate/confirm the behaviour shown on the screenshot above using the test page below? http://www.mgwebservices.ca/test/test.html -- cheers, mark