The navigation menu is not showing up on IE

It is a problem with IE( as it can’t show any sites that use helvetica. See these articles:

http://answers.microsoft.com/en-us/ie/forum/ie9-windows_7/ie9-is-showing-some-pages-as-blank/6a13fab2-0e7d-e011-9b4b-68b599b31bf5

http://jamesmorrish.co.uk/blog/ie9-hellvetica/

http://www.youtube.com/watch?v=afY1sdY-fTo

The last fix works to display the site but might be a problem later on.

Hope it helps someone else.