A Scatter chart with the ability to drilldown into the data

This is a customised Scatter chart that has the ability to dynamically drilldown into the data. You can highlight the area that you want to drill into with the mouse.

[No canvas support]

This goes in the documents header: 
<script src="RGraph.common.core.js"></script>
<script src="RGraph.common.context.js"></script>
<script src="RGraph.scatter.js"></script>
Put this where you want the chart to show up: 
<canvas id="cvs" width="600" height="200">[No canvas support]</canvas>
This is the code that generates the chart: