Hi,
I have taken a quick look using firebug and have noticed that you do not use the "shown" class
This is how i think the plugin site manages to have the menu open on load as it is set in the plugin options as follows:
- initShow : "div.shown"
On your page however you specify that option as "div.
current" but as far as I can see there is not class "current" used.
The fastest code is never executed.