[jQuery] treeview

Hi there, great work whit treeview plugin :)
I have just a simple question (i'm really new in jquery)
I'm talking about Prerendered Large Tree Demo.
it's possible to open the tree elements with accordion ,
so that all the other elements collapse automatically?
tnx in advance
here is an example of what i'm trying to do.
http://www.pirolab.it/bim/interna.html
diego