A nested Donut/Pie chart

[No canvas support]

This goes in the documents header:
<script src="RGraph.common.core.js"></script>
<script src="RGraph.common.key.js"></script>
<script src="RGraph.pie.js"></script>
Put this where you want the chart to show up:
<canvas id="cvs" width="475" height="350" >
    [No canvas support]
</canvas>
This is the code that generates the chart:
<script>
    new RGraph.Pie({
        id: 'cvs',
        data: [41,37,16,3,3],
        options: {
            colors: ['red','#ccc','#0f0','blue','pink'],
            variant: 'pie',
            radius: 75,
            centerx: 170,
            linewidth: 2,
            colorsStroke: 'white',
            shadow: false
        }
    }).roundRobin();

    new RGraph.Pie({
        id: 'cvs',
        data: [36,42,8,10,4],
        options: {
            colors: ['red','#ccc','#0f0','blue','pink'],
            variant: 'donut',
            radius: 100,
            centerx: 170,
            variantDonutWidth: 50,
            linewidth: 2,
            colorsStroke: 'white',
            shadow: false
        }
    }).roundRobin();

    new RGraph.Pie({
        id: 'cvs',
        data: [40,35,10,7,8],
        options: {
            key: ['Internet Explorer','Chrome','Firefox','Safari','Opera'],
            colors: ['red','#ccc','#0f0','blue','pink'],
            keyColors: ['red','#ccc','#0f0','blue','pink'],
            keyPositionGraphBoxed: false,
            keyPositionY: 125,
            variant: 'donut',
            radius: 125,
            centerx: 170,
            variantDonutWidth: 35,
            linewidth: 2,
            colorsStroke: 'white',
            shadow: false
        }
    }).roundRobin();
</script>