private static JFreeChart createChart(XYDataset dataset, String title, String xLabel, String yLabel)
	{
		JFreeChart chart = ChartFactory.createXYLineChart(
				title, // chart title
				xLabel, // x axis label
				yLabel, // y axis label
				dataset, // data
				PlotOrientation.VERTICAL, true, // include legend
				true, // tool tips
				false // urls
				);
		return chart;

	}