Highcharts - Google Analytics

HTML

<script src="http://code.highcharts.com/highcharts.js"></script>
<script src="http://code.highcharts.com/modules/data.js"></script>
<script src="http://code.highcharts.com/modules/exporting.js"></script>

<!-- Additional files for the Highslide popup effect -->
<script src="http://www.highcharts.com/joomla/media/com_demo/js/highslide-full.min.js"></script>
<script src="http://www.highcharts.com/joomla/media/com_demo/js/highslide.config.js" charset="utf-8"></script>
<link rel="stylesheet" type="text/css" href="http://www.highcharts.com/joomla/media/com_demo/highslide.css" />

<div id="container" style="min-width: 310px; height: 400px; margin: 0 auto"></div>

JavaScript

$(function () {

    // Get the CSV and create the chart
    $.getJSON('http://www.highcharts.com/samples/data/jsonp.php?filename=analytics.csv&callback=?', function (csv) {

        $('#container').highcharts({

            data: {
                csv: csv
            },

            title: {
                text: 'Daily visits at www.highcharts.com'
            },

            subtitle: {
                text: 'Source: Google Analytics'
            },

            xAxis: {
                tickInterval: 7 * 24 * 3600 * 1000, // one week
                tickWidth: 0,
                gridLineWidth: 1,
                labels: {
                    align: 'left',
                    x: 3,
                    y: -3
                }
            },

            yAxis: [{ // left y axis
                title: {
                    text: null
                },
                labels: {
                    align: 'left',
                    x: 3,
                    y: 16,
                    format: '{value:.,0f}'
                },
                showFirstLabel: false
            }, { // right y axis
                linkedTo: 0,
                gridLineWidth: 0,
                opposite: true,
                title: {
                    text: null
                },
                labels: {
                    align: 'right',
                    x: -3,
                    y: 16,
                    format: '{value:.,0f}'
                },
                showFirstLabel: false
            }],

            legend: {
                align: 'left',
                verticalAlign: 'top',
                y: 20,
                floating: true,
                borderWidth: 0
            },

            tooltip: {
                shared: true,
                crosshairs: true
            },

            plotOptions: {
                series: {
                    cursor: 'pointer',
                    point: {
                        events: {
                           ...