ACP Renders Incorrectly in Chrome

My webhost wraps my pages with an ad server. The user side of the board renders correctly, however, the ACP does not. It shows the top and bottom but no menus et al. I commented out the overflow code as noted here http://www.phpbb.com/bugs/phpbb3/ticket.php?ticket_id=51275 and the page displays. The webhost added text renders on top of the normal ACP pages. Note that the board looks normal in IE 6 and 8, just not Chrome

Since the user side looks normal in Chrome, there must be a way to make the ACP render in the same way.

Thank you,
Homer