Nice and clean. Well done.
I remember a few years back when animated Christmas cards using Flash became popular. It's nice to see that we're almost at the point you can do all of this without a plugin :-)
If a demo doesn't work on the iPad it's broken.
It's a colloquialism referring to a users broken expectations. If a user tries to open a page and it doesn't render properly, the user will blame the page, not the device. If a website renders wrong, that's the websites problem.
If the site uses a feature that is unsupported (or poorly supported) by a browser with significant market share, then its the sites responsibility to fail gracefully. You can rant until you're blue in the face about how the iPad/Safari should handle these things better, but most users simply don't care about your particular definition of "broken". They only know the site doesn't work.