That's awesome. It's amazing how much we could actually do back in the days of Netscape and IE version 4 and below.
Performance on the machines of the day was actually better than modern HTML5 stuff on modern hardware because the DOM was so much simpler and tuned toward performance. I could actually watch the little games I made using DIVs/LAYERs and pixel art images slow down during the 2000s as new browsers came out. It's only now, with quad core processors that they're back up to the speed they used to run on a Pentium.
I had a similarly amusing moment years back when I saw a bit-blit demo in the browser. All this excitement about something that was state of the art on Commodore 64s.
(And yes, I do understand how the ubiquitous nature of the web actually makes this important... but I still find it funny!)
