up3.name,
          y: pageStats.group3.percentage,
          color: '#FFA900'
        },
        {
          name: pageStats.group4.name,
          y: pageStats.group4.percentage,
          color: '#f15b4f'
        }
      ],
      center: [368, 0],
      size: 90,
      showInLegend: false,
      dataLabels: { enabled: false }
    }
  ]
});

rangesChart.setTitle({
  text: '<span class="chart_title">Response Time Ranges</span>',
  useHTML: true
});

	    $('#container_errors').sortable('#container_errors')