Balloon helper - charting

[GoogleCodeExporter]

It would be great to have a number of helpers for creating Balloon content.  Or 
maybe just examples.  

e.g.  Using the Google Charts API with 
http://pygooglechart.slowchop.com/

Is there any extra glue that would help make this super easy to do?

In the following post, it looks like you can have extended data that is intern 
passed to the charts API:

http://googlemapsapi.blogspot.com/2007/12/using-chart-api-in-kml-for-quick-data.
html

Original issue reported on code.google.com by [email protected] on 3 Aug 2011 at 9:16