Arcade Buttons - Normally Open or Closed Switch?

Hello, my first post here! I was lead to post in the community s by the DJ Techtools tech support, after asking this question:

Regarding the Arcade Buttons available on the DJ Techtools ( http://store.djranking s.com/arcade-...product-search ) I need to know if these buttons are normally open or normall closed. I am going to use one for a kill switch on an electric guitar and I need a switch that is normally open (off) and when pushed, closes the circuit. Any help would be appreciated very much.

Thanks!