[jQuery] [treeview] is it possible to only expand level?

[jQuery] [treeview] is it possible to only expand level?


I have a tree (using the excellent treeview) plug-in, which is 2
levels deep.
By default, I would like to expand level 1, while keeping everything
in level 2 collapsed.
Is there an option (an easy way) of specifying this?
Forgive me if this has been already answered, I did try to fruitlessly
search...