Zed, you really should jslint your javascript code. Not trying to be overly critical, but it's really a mess- not even sure where to begin- well, I would start by not defining everything in the global namespace. Take a look at "Javascript, the Good Parts" for info on javascript's quirks and best practices or Pro Javascript Design Patterns.

On the more positive side, congrats on releasing yet another useful project. This is definitely an interesting concept.