Ugh... Canvas is fully supported in FF1.5+, Safari, Opera and Chrome out of the box. And you're only a short hack away from having Canvas emulation in IE5+.

Ugh... Canvas is fully supported in FF1.5+, Safari, Opera and Chrome out of the box. And you're only a short hack away from having Canvas emulation in IE5+. It's inexcusable not to build something like this cross-browser, when the underlying technology itself is cross-browser.