jquery treeview expand given node

Im building ul li list dynamically on the serverside code. How can I determine which node should be expanded when page is loaded ?

Im using plugin: http://bass开发者_JS百科istance.de/jquery-plugins/jquery-plugin-treeview/

thank You very much for help

It looks like they are open by default, but if you set class="closed" on the <li> tag, it will be collapsed.

<li class="closed">