{
        id: 3,
        content: names[3],
        options: {
            drawPoints: {
                style: 'circle' // square, circle
            },
            shaded: {
                orientation: 'top' // top, bottom
            }
        }});

  var container = document.getElementById('visualization');
  var items = [
    {x: '2014-06-13', y: 60},
    {x: '2014-06-14', y: 40},
    {x: '2014-06-15', y: 55},
    {x: '2014-06-16', y: 40},
    {x: '2014-06-17', y: 50},
    {x: '2014-06-13', y: 30, gro