var slider;
 
function makeScrollbar(content,scrollbar,handle){
  var scrollSize = content.getSize().scrollSize.x - content.getSize().size.x;
  var steps = 10000;
  handle.setStyle('width', Math.floor(content.getSize().size.x * (content.getSize().size.x/content.getSize().scrollSize.x)) + 'px');  
  slider = new Slider(scrollbar, handle, {	
    steps: steps,
    mode: 'horizontal',
    onChange: function(step){
      var x = scrollSize/(steps/step);
      content.scrollTo(x,0);
    }
  }).set(0);
}