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

function handleSliderChange(e, ui)
{
  var maxScroll = $("#container").attr("scrollWidth") - 40;
  $("#content-scroll").animate({scrollLeft: ui.value * (maxScroll / 100) }, 10);
}

function handleSliderSlide(e, ui)
{
  var maxScroll = $("#container").attr("scrollWidth") - $("#container").width();
  $("#container").attr({scrollLeft: ui.value * (maxScroll / 100) });
}