I'm in the process of re-designing my site to a 100% height and width layout

I would like a mobile phone friendly navigation to go with this so I can cut down on links etc

Ideally it would be one where you can click on the nav and it will stay open.

I've seen tutorials but cant quite work them out to be honest. Does anybody know how I can do this and any tutorials that I could follow

FYI The one I have tried to follow (but fell shirt at the JS section) is: