I was looking at an example here
http://jsfiddle.net/davidThomas/bw6Xw/6/
div.on('mousemove', function(e) {
var cPointY = e.pageY,
dP = ((cPointY / wrapHeight));
div.scrollTop((listHeight * dP) - wrapScreenHeight);
});
I tried to replicate the same here http://jsfiddle.net/bw6Xw/188/ but it does not work.
Any reasons why?