To use the Chart widget the chart.js, canvaschartpainter.js and canvaschart.css files needs to be included. Furthermore for IE support the excanvas.js files needs to be included. <script type="text/javascript" src="includes/excanvas.js"></script> <script type="text/javascript" src="includes/chart.js"></script> <script type="text/javascript" src="includes/canvaschartpainter.js"></script> <link rel=