XF 1.1 Logo and Ads overwrite Forum index

On my site http://www.hmsneo.org/index.php?forum/, if you shrink the width of the window down to where the two logos won't fit, the main logo is forced down over the forum toolbars and other info.

Is there anyway to force a minimum width will still allowing it to stretch as the window gets wider?

Or any other suggestions on what to do about this would be appreciated.