Nope. I tried to experiment and rename the categories_css to categories.php and the categories tabs changed to what I guess is the flyout default look, but none of the flyout-functions, and now the products in the categories don´t show. So I have reset it.
I have installed the Norwegian language pack, other than that nothing too special.... Here is my site:

http://godpåbunn.no/

Thanks,

Kristian