center menu

Hi Guys!

I’m stuck with the site I’m currently working on. Here is the link.

Here is what I want:
The menu should center horizontally on top of the page.
It also should be flexible, so i don’t have rewrite the css if I’m adding a new menu item. The best would be if this worked automatically.

I’d be very thankful if someone could have a quick look at the page and could tell me what to do, or what I do wrong.

I tried a whole bunch of different tutorials and like a ton of different codes. But it just wont work. I’m no pro so I’m working mostly on trial and error. And this just comes out as error ??

THANK YOU,
colophonius