Highcharts Demo - Donut chart

$(function () {
    
        var colors = Highcharts.getOptions().colors,
            categories = ['MSIE', 'Firefox', 'Chrome', 'Safari', 'Opera'],
            name = 'Browser brands',
            data = [{
                    y: 55.11,
                    color: colors[0],
                    drilldown: {
                        name: 'MSIE versions',
                        categories: ['MSIE 6.0', 'MSIE 7.0', 'MSIE 8.0', 'MSIE 9.0'],
                        data: [10.85, 7.35, 33.06, 2.81],
                        color: colors[0]
                    }
                }, {
                    y: 21.63,
                    color: colors[1],
                    drilldown: {
                        name: 'Firefox versions',
                        categories: ['Firefox 2.0', 'Firefox 3.0', 'Firefox 3.5', 'Firefox 3.6', 'Firefox 4.0'],
                        data: [0.20, 0.83, 1.58, 13.12, 5.43],
                        color: colors[1]
                    }
                }, {
                    y: 11.94,
                    color: colors[2],
                    drilldown: {
                        name: 'Chrome versions',
                        categories: ['Chrome 5.0', 'Chrome 6.0', 'Chrome 7.0', 'Chrome 8.0', 'Chrome 9.0',
                            'Chrome 10.0', 'Chrome 11.0', 'Chrome 12.0'],
                        data: [0.12, 0.19, 0.12, 0.36, 0.32, 9.91, 0.50, 0.22],
                        color: colors[2]
                    }
                }, {
                    y: 7.15,
                    color: colors[3],
                    drilldown: {
                        name: 'Safari versions',
                        categories: ['Safari 5.0', 'Safari 4.0', 'Safari Win 5.0', 'Safari 4.1', 'Safari/Maxthon',
                            'Safari 3.1', 'Safari 4.1'],
                        data: [4.55, 1.42, 0.23, 0.21, 0.20, 0.19, 0.14],
                        color: colors[3]
                    }
                }, {
                    y: 2.14,
                    color: colors[4],
                    drilldown: {
                        name: 'Opera versions',
                        categories: ['Opera 9.x', 'Opera 10.x', 'Opera 11.x'],
                        data: [ 0.12, 0.37, 1.65],
                        color: colors[4]
                    }
                }];
    
    
        // Build the data arrays
        var browserData = [];
        var versionsData = [];
        for (var i = 0; i < data.length; i++) {
    
            // add browser data
            browserData.push({
                name: categories[i],
                y: data[i].y,
                color: data[i].color
            });
    
            // add version data
            for (var j = 0; j < data[i].drilldown.data.length; j++) {
                var brightness = 0.2 - (j / data[i].drilldown.data.length) / 5 ;
                versionsData.push({
                    name: data[i].drilldown.categories[j],
                    y: data[i].drilldown.data[j],
                    color: Highcharts.Color(data[i].color).brighten(brightness).get()
                });
            }
        }
    
        // Create the chart
        $('#container').highcharts({
            chart: {
                type: 'pie'
            },
            title: {
                text: 'Browser market share, April, 2011'
            },
            yAxis: {
                title: {
                    text: 'Total percent market share'
                }
            },
            plotOptions: {
                pie: {
                    shadow: false,
                    center: ['50%', '50%']
                }
            },
            tooltip: {
        	    valueSuffix: '%'
            },
            series: [{
                name: 'Browsers',
                data: browserData,
                size: '60%',
                dataLabels: {
                    formatter: function() {
                        return this.y > 5 ? this.point.name : null;
                    },
                    color: 'white',
                    distance: -30
                }
            }, {
                name: 'Versions',
                data: versionsData,
                size: '80%',
                innerSize: '60%',
                dataLabels: {
                    formatter: function() {
                        // display only if larger than 1
                        return this.y > 1 ? '<b>'+ this.point.name +':</b> '+ this.y +'%'  : null;
                    }
                }
            }]
        });
    });