>  Is there a mechanism by which I can selectively expose to him (via
>  the specification of specially crafted locals or globals to exec())
>  a means of accessing functionality in that parent javascript
>  environment.  An example might be, I'd like to allow my user code
>  to exercise the javascript alert() function, or say, change the
>  text of a button in my user interface, or change the window title, etc...

Not currently, no.  Although if the 'document' and 'window' objects are
available, many interesting things can still be done in Python via XPCOM.
Non-XPCOM variables can't be referenced, and even for the XPCOM interfaces,
some functions are implemented in a way that only make sense for JS, and
can't be called by Python.  IIRC, alert() is one example of that.

The work I recently did on 'nsdom' gets us a little closer to that goal -
you can use Python directly in XUL - but I don't think that will appear in
firefox releases for some time.

Mark

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