Not David, but will put some information forth here about the windows side of this, XP does in fact handle java script quite a bit better than the previous versions(I still am on 98 with this machine) one of the problems with Javascript in the past was it would seize memory for its calls, and of course the older versions of windows, the memory management was poor to say the least, I don't have alot of experiance with Mac's but I know the one that I do have seems to have memory management problems simular to the Windows machine I am currently on..

Dave