I want to use arrow keys for going next or previous projects. So I found and added some custom html and it works nice. I go to next project when I press right key and left for previous. Perhaps this can be added easily to lay theme.
I have Prev and Next links on my page already so I use them to JS click function.
You have to add id to your Next and previous links like #previousarrlink and #nextarrlink
var key = e.which||e.keyCode;
Project arrows function can have this as an addition too.