A pyramid 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="350" height="350">
    [No canvas support]
</canvas>
This is the code that generates the chart:
<script>
    new RGraph.Pie({
        id: 'cvs',
        data: [66,12,33,66],
        options: {
            colors: ['#ccf','#aa0','#ff0','#ccf'],
            colorsStroke: 'rgba(0,0,0,0)',
            centerx: 275,
            key: ['Sky','Dark side of pyramid','Sunny side of pyramid'],
            keyColors: ['#ccf','#aa0','#ff0'],
            keyPositionGraphBoxed: false,
            keyPositionY: 150,
            textSize: 20
        }
    }).draw();
</script>