Can't get ScollTo/serialScroll plugin to work - tried a million different things

Can't get ScollTo/serialScroll plugin to work - tried a million different things

I'm trying to get the scrollto Plugin to work with keyboard arros (left and right).  

Here's a demo:   http://subrb.com/jstest/st

The code is in keyboard.js. 

Thanks in advance! I'm very frustrated with this and can't seem to figure it out.