http://www.jqplot.com
http://www.highcharts.com/stock/demo/compare/grid-light
http://www.sitepoint.com/11-best-jquery-charting-libraries
http://www.highcharts.com/docs/working-with-data/getting-data-across-domains-jsonp
http://www.sitepoint.com/ajaxjquery-getjson-simple
http://api.jquery.com/jquery.getjson