Highchart shows only 12 categories
===

Hi guys I'm having a trouble working with Highchart. I think my error is when the category is more than 12. here's my code:

    $(function () {
    var chart;
    $(document).ready(function() {
        chart = new Highcharts.Chart({
            chart: {
                renderTo: 'container',
                type: 'line',
                marginRight: 130,
                marginBottom: 25
            },
            title: {
                text: 'Monthly Average Temperature',
                x: -20 //center
            },
            subtitle: {
                text: 'Source: WorldClimate.com',
                x: -20
            },
            xAxis: {
                categories: ['ARC', 'CLM', 'COLREP', 'CUI', 'FB', 'IOH', 'IST', 'LCV', 'LCWSLC', 'LOGDFR', 'LOGDRT', 'LOGGLE', 
                            'LOGGT', 'LOGSR', 'LOGVL', 'LST', 'OARD', 'OARP', 'OARPPP', 'POR', 'PRIN', 'SLRD', 'SLRS', 'SLRSUP', 'SVTCBR', 
                            'SVTSP', 'SVTST', 'TKD', 'TR', 'USO']
            },
            yAxis: {
                title: {
                    text: 'Temperature (°C)'
                },
                plotLines: [{
                    value: 0,
                    width: 1,
                    color: '#808080'
                }]
            },
            tooltip: {
                formatter: function() {
                        return '<b>'+ this.series.name +'</b><br/>'+
                        this.x +': '+ this.y +'°C';
                }
            },
            legend: {
                layout: 'vertical',
                align: 'right',
                verticalAlign: 'top',
                x: -10,
                y: 100,
                borderWidth: 0
            },
            series: [{
                name: 'Tokyo',
                data: [400.6, 6.9, 9.5, 14.5, 18.2, 21.5, 25.2, 26.5, 23.3, 18.3, 13.9, 9.6]
            }, {
                name: 'New York',
                data: [-0.2, 0.8, 5.7, 11.3, 17.0, 22.0, 24.8, 24.1, 20.1, 14.1, 8.6, 2.5]
            }, {
                name: 'Berlin',
                data: [-0.9, 0.6, 3.5, 8.4, 13.5, 17.0, 18.6, 17.9, 14.3, 9.0, 3.9, 1.0]
            }, {
                name: 'London',
                data: [3.9, 4.2, 5.7, 8.5, 11.9, 15.2, 17.0, 16.6, 14.2, 10.3, 6.6, 100.9]
            }]
        });
    });
});​

I already try to put the categories in array variable but same result show.

x-axis only show 12 categories. the example on there site is good for 12 categories. Is anyone know how to fix this problem or configure anything in the plugin? 

here's there demo page [http://www.highcharts.com/demo/line-basic][1]

thanks in advance!


  [1]: http://www.highcharts.com/demo/line-basic