$(function () {
    $('#container').highcharts({
        title: {
            text: 'Results',
        },
        xAxis: {
            categories: ['Period 1', 'Period 2', 'Period 3'],
        },
        yAxis: [{
  //--- Primary yAxis          title: {
                text: 'Units'
            }},
 {//--- Secondary yAxis title: {'Payoffs'}, opposite: true }],          plotLines: [{
                value: 0,
                width: 1,
                color: '#808080'
            }]
        },
        tooltip: {
            valueSuffix: 'units'
        },
        legend: {
            layout: 'vertical',
            align: 'right',
            verticalAlign: 'middle',
            borderWidth: 0
        },
        series: {{ series }}
    });
});