thanks :) I can't bear to even think about how it looks in IE.
I'm honestly thinking of just putting an
<!//--[if IE]--
sorry this website is not supported in IE, but here's an animated gif of a dancing bear for your amusement
---!>
You probably don't want to do this, since there is (anecdotally at least) a correlation between ad clicks and less sophisticated visitors. It may be a pain, but there's a good chance that IE users will be where you make the most money.