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+<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
+<html>
+<head>
+	<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
+	<title>Flot Examples: Tracking</title>
+	<link href="../examples.css" rel="stylesheet" type="text/css">
+	<!--[if lte IE 8]><script language="javascript" type="text/javascript" src="../../excanvas.min.js"></script><![endif]-->
+	<script language="javascript" type="text/javascript" src="../../jquery.js"></script>
+	<script language="javascript" type="text/javascript" src="../../jquery.flot.js"></script>
+	<script language="javascript" type="text/javascript" src="../../jquery.flot.crosshair.js"></script>
+	<script type="text/javascript">
+
+	$(function() {
+
+		var sin = [], cos = [];
+		for (var i = 0; i < 14; i += 0.1) {
+			sin.push([i, Math.sin(i)]);
+			cos.push([i, Math.cos(i)]);
+		}
+
+		plot = $.plot("#placeholder", [
+			{ data: sin, label: "sin(x) = -0.00"},
+			{ data: cos, label: "cos(x) = -0.00" }
+		], {
+			series: {
+				lines: {
+					show: true
+				}
+			},
+			crosshair: {
+				mode: "x"
+			},
+			grid: {
+				hoverable: true,
+				autoHighlight: false
+			},
+			yaxis: {
+				min: -1.2,
+				max: 1.2
+			}
+		});
+
+		var legends = $("#placeholder .legendLabel");
+
+		legends.each(function () {
+			// fix the widths so they don't jump around
+			$(this).css('width', $(this).width());
+		});
+
+		var updateLegendTimeout = null;
+		var latestPosition = null;
+
+		function updateLegend() {
+
+			updateLegendTimeout = null;
+
+			var pos = latestPosition;
+
+			var axes = plot.getAxes();
+			if (pos.x < axes.xaxis.min || pos.x > axes.xaxis.max ||
+				pos.y < axes.yaxis.min || pos.y > axes.yaxis.max) {
+				return;
+			}
+
+			var i, j, dataset = plot.getData();
+			for (i = 0; i < dataset.length; ++i) {
+
+				var series = dataset[i];
+
+				// Find the nearest points, x-wise
+
+				for (j = 0; j < series.data.length; ++j) {
+					if (series.data[j][0] > pos.x) {
+						break;
+					}
+				}
+
+				// Now Interpolate
+
+				var y,
+					p1 = series.data[j - 1],
+					p2 = series.data[j];
+
+				if (p1 == null) {
+					y = p2[1];
+				} else if (p2 == null) {
+					y = p1[1];
+				} else {
+					y = p1[1] + (p2[1] - p1[1]) * (pos.x - p1[0]) / (p2[0] - p1[0]);
+				}
+
+				legends.eq(i).text(series.label.replace(/=.*/, "= " + y.toFixed(2)));
+			}
+		}
+
+		$("#placeholder").bind("plothover",  function (event, pos, item) {
+			latestPosition = pos;
+			if (!updateLegendTimeout) {
+				updateLegendTimeout = setTimeout(updateLegend, 50);
+			}
+		});
+
+		// Add the Flot version string to the footer
+
+		$("#footer").prepend("Flot " + $.plot.version + " &ndash; ");
+	});
+
+	</script>
+</head>
+<body>
+
+	<div id="header">
+		<h2>Tracking</h2>
+	</div>
+
+	<div id="content">
+
+		<div class="demo-container">
+			<div id="placeholder" class="demo-placeholder"></div>
+		</div>
+
+		<p>You can add crosshairs that'll track the mouse position, either on both axes or as here on only one.</p>
+
+		<p>If you combine it with listening on hover events, you can use it to track the intersection on the curves by interpolating the data points (look at the legend).</p>
+
+		<p id="hoverdata"></p>
+
+	</div>
+
+	<div id="footer">
+		Copyright &copy; 2007 - 2013 IOLA and Ole Laursen
+	</div>
+
+</body>
+</html>