[jQuery] Issue with jQuery/javascript and WebKit

Hi,

I'm having a problem related to WebKit:
http://demo.frojd.se/webkit/index.html

When you click "Menu item 1" it shows it's children.
This renders fine in Firefox 3.5, IE8 and in Opera 10.
In WebKit-browsers (Safari 4 and Chrome 3) it doesn't.

However, if I preset all the different classes and css-settings in the
html, it renders correctly.
http://demo.frojd.se/webkit/index_loaded_from_start.html

Any ideas on why this might be?

Cheers,
Robin.