A grouped bar chart

This is a grouped Bar chart.

[No canvas support]
hmargin.grouped setting:

This goes in the documents header:
<script src="RGraph.common.core.js"></script>
<script src="RGraph.bar.js"></script>
Put this where you want the chart to show up:
<canvas id="cvs" width="600" height="250">
    [No canvas support]
</canvas>
This is the code that generates the chart:
<script>
    bar = new RGraph.Bar({
        id: 'cvs',
        data: [[1250,1450,750,450],[1300,1375,750,525],[1500,1480,650,600],[1450,1500,700,450]],
        options: {
            xaxisLabels: ['Jan 2008\r\nStart year','Jan 2009\r\nBest year','Jan 2010\r\nLast year','Jan 2011\r\nThis year!'],
            colors: ['#C7CFC7','#B2C8B2','#D9E0DE','#CDDED1'],
            hmargin: 15,
            hmarginGrouped: 3,
            marginLeft: 45,
            marginBottom: 45,
            backgroundGridVlines: false,
            backgroundGridBorder: false,
            textSize: 12,
            colorsStroke: 'rgba(0,0,0,0)',
            shadow: false
        }
    }).draw();
</script>