It appears that there is something about the code I wrote that IE6 doesn't like. Since I have no access to IE6, and the code works on IE7 (and Firefox and Safari), I don't know how to fix it. I will keep trying to see what I can do and if I come across a fix, I will let everyone know.
For now, if you are using IE6 and having a problem, join the club.
Oh well.
Ray