$(document).ready(function(){
  $("#content-slider").slider({
    orientation: "vertical",
    animate: true,
    change: handleSliderChange,
    slide: handleSliderSlide
    
  });
  
});

function handleSliderChange(e, ui)
{
  var maxScroll = $("#content-scroll").attr("scrollHeight") - $("#content-scroll").height();
  $("#content-scroll").animate({scrollTop: ui.value * (maxScroll / 100) }, 1000);
}

function handleSliderSlide(e, ui)
{
  var maxScroll = $("#content-scroll").attr("scrollHeight") - $("#content-scroll").height();
  $("#content-scroll").attr({scrollTop: ui.value * (maxScroll / 100) });
}