>> No, just HTML, CSS & Javascript. Should work in any current browser, no
>> plugins needed.
>
> Mine's not "current" (Firefox 1, copyright 2005), so that will be why it's
> just a static image on my computer. :-(
If possible, you should get an update, and be it just for the sake of
security.
Firefox 3.6, which I use once in a while, is not current either, but
still maintained, and runs smoothly on my older machine (unlike the
recent releases). Plus it supports all interesting muppet technology.
Apart from that, I'd suggest to take a look at Opera, too. Small
footprint, fewer updates, definitly muppet compatible.
http://www.mozilla.org/firefox/all-older.html
http://www.opera.com/products/