Mouse Wheel With Plugin

Hello,

I am currently succesfully using jsScroller http://n-son.com/scripts/jsScrolling/jsScroller.html but I can not see how I would add my own code to enable MouseWheel support. I just want the most basic of up and down scrolling but I have no idea where to start. Any help on editing the JS or if anyone is familar with this plugin with advice is more than welcome.

Thank you