[jQuery] jquery treeview menu problem

[Titti]

Hi, i'm using jquery treeview ( 
http://bassistance.de/jquery-plugins/jquery-plugin-treeview/
) menu in my website and i have a little problem: when i open a page
from the menu tree,  menu expands completely  and items alignes to the
left side for a while, the time that page is charghing. I don't know
why, can u help me? thank you