A spline SVG Line chart

Here we have a spline Line chart with multiple datasets. The spline option simply makes the lines curvy instead of angular. There's also a shadow enabled and the vertical grid lines are disabled.

This goes in the documents header:
<script src="RGraph.svg.common.core.js"></script>
<script src="RGraph.svg.line.js"></script>
Put this where you want the chart to show up:
<div style="width: 750px; height: 300px" id="chart-container"></div>
This is the code that generates the chart:
<script>
    new RGraph.SVG.Line({
        id: 'chart-container',
        data: [
            [4,1,8,6,3,5,4,2,9,3,6,3],
            [1,9,6,3,4,6,8,5,5,5,2,8],
            [4,6,3,5,2,8,9,5,6,5,6,1],
            [4,8,6,3,5,4,2,5,1,6,9,9]
        ],
        options: {
            backgroundGridVlines: false,
            backgroundGridBorder: false,
            yaxis: false,
            marginLeft: 50,
            marginBottom: 50,
            linewidth: 5,
            spline: true,
            shadow: true,
            shadowOpacity: .25,
            title: 'A multi-line spline chart',
            xaxisLabels: ['Jan','Feb','Mar','Apr','May','Jun','Jul','Aug','Sep','Oct','Nov','Dec']
        }
    }).draw();
</script>