An inverted Bipolar chart

By using the margin settings to shift the charts left or right, two Bipolar charts can be made to give an inverted appearance.

[No canvas support]

This goes in the documents header:
<script src="RGraph.common.core.js"></script>
<script src="RGraph.bipolar.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>
    new RGraph.Bipolar({
        id: 'cvs',
        left: [4,6,3,5,8],
        right: [4,6,5,9,2],
        options: {
            colors: ['#7CB5EC'],
            yaxisLabels: ['John','Luke','Pete','Jane','Fred'],
            axes: false,
            marginLeft: -225,
            marginRight: 325,
            marginCenterAutosize: false,
            marginCenter: 75,
            textAccessibleOverflow: 'hidden'
        }
    }).grow();

    new RGraph.Bipolar({
        id: 'cvs',
        left: [4,6,3,5,8],
        right: [4,6,5,9,2],
        options: {
            yaxisLabels: ['John','Luke','Pete','Jane','Fred'],
            axes: false,
            marginLeft: 325,
            marginRight: -230,
            textAccessibleOverflow: 'hidden',
            colors: ['#7CB5EC']
        }
    }).grow();
</script>