<UL> Centered within a Div

On a design I am coding, there is a horizontal list that serves as the navigation for the site. It spans the entire width of the page. You can see it here: http://aquate.us/film/

Now, the <ul> contained within div#navigation refuses to act centered within the div. It seems to be offset towards the left side.

I've searched the net and nothing I try works. Any suggestions?

Thank you.

From stackoverflow

• Your form, having the id of "search" is too tall.

  alex : Easy answer!