Thanks, it works now. (And thanks for the link to Scheme2js!)
I installed ParenScript, but haven't used it for anything.
I recommend it for having a community that actually uses it for production, and for being around long enough to have tried a variety of different approaches to hosting a lisp on top of JavaScript. It's probably worth reading through their mailing list archives to see how they've evolved.
I also recommend coffee-script, which is sort of a python/ruby syntax for Javascript. Probably the most inspiring idea from coffee-script is that the language is self-hosted (it was initially cross-compiled from ruby, but is now written in itself.)
