Interesting, that compatibility button. I see it on Bettermost. But when I bring up IE before going to a site, it's not there and was trying to figure out what you have to do to get it. Apparently IE puts it there only if you go to a site that was created under an earlier version of IE. And, it is also an option which has to be checked, although the default may be to have it checked. I right clicked in the Menu Bar/Favorites Bar/Commands Bar area at the top of the window and saw that showing the Compatibility View Button was yet another option which has to be checked. If it is unchecked it does not show up, even on Bettermost.
Thanks for the information, Chrissi, I will forward it to my friend for her to play with.
That said, the compatibility view is mostly supposed to affect page formatting. So chances are the Halloween avatar problem was something else, like what you said.