I am not sure if this is what you are looking for, but Dan Steinman has some excellent JavaScript examples that detail CGI Communication with JavaScript. The coolest thing about DS's code is this:

// Copyright (C) 1999 Dan Steinman
// Distributed under the terms of the GNU Library General Public Licen
+se
// Available at http://www.dansteinman.com/dynapi/
[download]

Only guy that I have seen GPL his JavaScript. Now you can 'View -> Source' without feeling guilty about stealing code. --eric