Nice to see it works the same in all browsers
Well, almost. In IE7 the buttons go away never to re-appear. and in firefox, as mentioned in the article they are there.
Saying that, running the script in the bar again seems to break the whole thing and send it back to normal but it's only a demo and really doesn't bother me.
I did notice that on firefox it made the Chrome Add go away and in IE it didn't (I hadn't closed them manually since I am fairly good at ignoring guff.