A black and red Line chart

[No canvas support]

This goes in the documents header: 
<script src="RGraph.common.core.js"></script>
<script src="RGraph.line.js"></script>
Put this where you want the chart to show up: 
<canvas id="cvs" width="600" height="250" style="background-color: black">
    [No canvas support]
</canvas>
This is the code that generates the chart: