An SVG Horizontal Bar chart with an offset X axis

An example of a Horizontal Bar chart that's using an offset X axis. Most of the data points are on the positive side of the chart. The chart is animated using the grow() effect.

This goes in the documents header:
<script src="RGraph.svg.common.core.js"></script>
<script src="RGraph.svg.hbar.js"></script>
Put this where you want the chart to show up:
<div style="padding: 15px">
    <div style="width: 750px; height: 350px" id="chart-container"></div>
This is the code that generates the chart:
    new RGraph.SVG.HBar({
        id: 'chart-container',
        data: [[14,16],[16,13],[24,28],[26,21],[23,18],[29,26],[-12,-19]],
        options: {
            vmargin: 10,
            colors: ['rgba(129,0,1,0.5)','rgba(2,2,253,0.5)'],
            xaxis: false,
            xaxisScaleMax: 30,
            xaxisScaleMin: -20,
            yaxisLabels: ['Monday','Tuesday','Wednesday','Thursday','Friday','Saturday','Sunday'],
            backgroundGridHlines: false,
            backgroundGridBorder: false