Rob,

Just one more link to add to your list of things to check out:

http://www.squeaksource.com/ST2JS.html

from Diego Gomez Deck.  It provides a Compiler that compiles Smalltalk
to Javascript with enough infrastructure to preserve Smalltalk semantics. 

I can't tell from the rest of this thread if you'll end up needing such
a thing but it seems relevant to your original post.

David