Custom menu on event page

Hi,
On my website http://al-media.dk/gn/ I’m using two menus: One for the homepage and one for all the other pages.
I need to be able to use my secondary menu on my event page; otherwise my links does not work as you can see here: http://al-media.dk/gn/arrangementer/
So, is it possible to set my event page to use another menu? Or what can I do to fix this problem?
Thanks!