Please note that official support for this menu version has now ceased. There are still plenty of users, though, and the forum is still running. Some of our long-time users may be able to help you out.
It looks like you are asking for reference material to learn to program DHTML applications. I'll leave this to Andy if he has a chance as I'm sure he knows of some good books and websites on the topic. If you were asking for something else please be more specific.
Cheers,
Yadin