A 3D Horizontal Bar chart with a center Y axis

[No canvas support]
This goes in the documents header:
<script src="RGraph.common.core.js"></script>
<script src="RGraph.common.dynamic.js"></script>
<script src="RGraph.common.tooltips.js"></script>
<script src="RGraph.hbar.js"></script>
Put this where you want the chart to show up:
<canvas id="cvs" width="600" height="550">[No canvas support]</canvas>
This is the code that generates the chart:
    new RGraph.HBar({
        id: 'cvs',
        data: [[1,null],[1,2],[5,4],[7,null],[-4,-3],[-8,-8],[4,6]],
        options: {
            colors: [
            grouping: 'grouped',
            yaxisPosition: 'center',
            variant: '3d',
            marginLeft: 100,
            shadow: true,
            shadowOffsety:  5,
            shadowOffsetx: 13,
            shadowBlur: 10,
            shadowColor: '#ccc',
            vmargin: 10,
            axes: false,
            yaxisLabels: ['Monday','Tuesday','Wednesday','Thursday','Friday','Saturday','Sunday'],
            tooltips: [
            tooltipsCoordsPage: true