Calling javascript libraries from Rebol?

[old_mac]

In the past year javascript libraries have been popular for effects, like YUI, Google, Mochikit, jquery, moo.fx, Rico and about 50 more...

Is it possible to tap into these from Rebol on the client side. If yes how would you call Javascript functions from Rebol?

Can Rebol tap into the 'layers' (div) of most current browsers?  By this I mean, open a div layer z=10 with HTML and then have REBOL draw into it?

Thanks

Chris