Problem with directions in Google Maps

I am having a problem getting the directions to show up on one of my sites when using Google Maps. The page is http://muskelklinikken.dk/velkommen/kursuskalender/

I have this installed on another site and it is working fine. See evt. http://4site.dk/demo/xymbolic/contact-us/

I have set the both up the same way, so I can’t really see why it is not working. Any help would be greatly appreciated! ;o)

Thanks,

Chris