A basic example of Pie charts in tooltips

[No canvas support]

This is a basic example that shows charts (Pie charts) in tooltips. The canvas element is part of the tooltip HTML code (specified like regular tooltips) and then it uses the tooltip event to run some code which then creates the Pie chart in the tooltip.

This goes in the documents header: 
<script src="RGraph.common.core.js"></script>
<script src="RGraph.common.tooltips.js"></script>
<script src="RGraph.common.key.js"></script>
<script src="RGraph.common.dynamic.js"></script>
<script src="RGraph.pie.js"></script>
<script src="RGraph.bar.js"></script>
Put this where you want the chart to show up: 
<canvas id="cvs" width="1000" height="250">
    [No canvas support]
</canvas>
This is the code that generates the chart: