This must have been discussed somewhere long ago, but I can't seem to find the right search terms to locate it.

If I view my website with IE and adjust the text size (View¦Text Size), the Google ads always stay exactly the same (too small a font for high-res screens, but at least not clipped).

If I view my website with Firefox, as soon as I increase the font size (View¦Text Size) above normal, the content in the ads (both horizontal and vertical) starts getting clipped.

Any easy fix for this?