Slimbox navigation keys


I am working on a small site for a local paranormal investigation group here in Fife, and on one of the pages I have set up a small SlimBox gallery of some of their equipment (15 images), I have searched and found details of how to enable the navigation in SlimBox (altering the key-numbers) but I can't get it to work for me - which file do I alter and where in that file do I change the details?

I would prefer to get this fixed before I get as far as their gallery of images, it has 80+ pic's in it!!

The link for what is done so far is at River Cities Paranormal Society (Scotland)

I am by no means a web designer, so all this Java and CSS is still new to me.
Now sorted.

I was looking to hard at it all...
I was trying to figure out how to alter the .JS or .CSS files, when all I had to do was alter the rel atribute.

That's what I get for starting it all so late on at night :icon_mad: