gistfile1.js

var s = new Control.Slider('thumb','track', {axis:'vertical'});
var f = function(value){
  var inner = $('innerDiv');
  var h = (inner.getHeight() - inner.up('div').getHeight());
  inner.style.top = (Math.round(value * h) * -1) + 'px';
}
s.options.onChange = function(value){
  f(value);
};
s.options.onSlide = function(value){
  f(value);
};
/*table highlight rows*/
$('innerDiv').on('mouseover', 'tr', function(evt, elm){
  elm.addClassName('over');
}).on('mouseout', 'tr', function(evt, elm){
  elm.removeClassName('over');
});