This is an implementation of the classic Game of Life in Javascript and CSS. It seems to be terribly slow and there may be a better way to do this. If you think you know a way to fix that, let me know! This code uses no browser checks and works on all the major browsers (Safari, Firefox, IE, and Opera)! You may want to check out some of the other stuff I've done if you're bored (like I was when I did most of it...).
To play, click in the red box to place the pieces and then click run to get things moving.