Sometimes you just have to make something fun and silly. The chance tree converted to javascript...
Actually, I didn't make it to be fun or silly, but rather to create a neat little client-side application for a good friend of mine. Could have just as easily written a basic PRNG index swizzle and gotten identical results, but it seemed like this chance tree is going to just make my life entirely easier if I have it always available as a tool. Not going to worry about implementing the swap filters and other features, but if you need to do some random selection in a web browser, maybe you'll find it useful.
Code-Only: Client-Side OO Javascript Vector Chance Tree for probability selection.