Practice with the canvas tag: cellular automata

I decided to do a quick study on the canvas tag (which I'll use in the chapter on game development) before diving into the next chapter, so I ported an old PHP script that generated one-dimensional cellular automata to a JavaScript and <canvas> cellular automata display. I recommend numbers 30, 60, 182, and 225 (see Elementary Cellular Automaton on Mathworld for more, including previews of all 256 of them).

This obviously will not work in IE, and I have it defaulting to rendering them line by line so that it doesn't seize up Firefox and Safari for a few seconds (depending on which one you pick) while it draws it out. Opera displays it incredibly quickly and seems the only browser to have threaded rendering rather than locking up the browser until it finishes when drawing it all at once.