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+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
+<html>
+ <head>
+    <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
+    <title>Flot Examples</title>
+    <link href="layout.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>
+ </head>
+    <body>
+    <h1>Flot Examples</h1>
+
+    <div id="placeholder" style="width:600px;height:300px;"></div>
+
+    <p>With multiple axes, you sometimes need to interact with them. A
+    simple way to do this is to draw the plot, deduce the axis
+    placements and insert a couple of divs on top to catch events.
+    Try clicking an axis.</p>
+
+    <p id="click"></p>
+
+<script type="text/javascript">
+$(function () {
+    function generate(start, end, fn) {
+        var res = [];
+        for (var i = 0; i <= 100; ++i) {
+            var x = start + i / 100 * (end - start);
+            res.push([x, fn(x)]);
+        }
+        return res;
+    }
+
+    var data = [
+        { data: generate(0, 10, function (x) { return Math.sqrt(x)}), xaxis: 1, yaxis:1 },
+        { data: generate(0, 10, function (x) { return Math.sin(x)}), xaxis: 1, yaxis:2 },
+        { data: generate(0, 10, function (x) { return Math.cos(x)}), xaxis: 1, yaxis:3 },
+        { data: generate(2, 10, function (x) { return Math.tan(x)}), xaxis: 2, yaxis: 4 }
+    ];
+
+    var plot = $.plot($("#placeholder"),
+                      data,
+                      {
+                          xaxes: [
+                              { position: 'bottom' },
+                              { position: 'top'}
+                          ],
+                          yaxes: [
+                              { position: 'left' },
+                              { position: 'left' },
+                              { position: 'right' },
+                              { position: 'left' }
+                          ]
+                      });
+
+    // now for each axis, create a div
+
+    function getBoundingBoxForAxis(plot, axis) {
+        var left = axis.box.left, top = axis.box.top,
+            right = left + axis.box.width, bottom = top + axis.box.height;
+
+        // some ticks may stick out, enlarge the box to encompass all ticks
+        var cls = axis.direction + axis.n + 'Axis';
+        plot.getPlaceholder().find('.' + cls + ' .tickLabel').each(function () {
+            var pos = $(this).position();
+            left = Math.min(pos.left, left);
+            top = Math.min(pos.top, top);
+            right = Math.max(Math.round(pos.left) + $(this).outerWidth(), right);
+            bottom = Math.max(Math.round(pos.top) + $(this).outerHeight(), bottom);
+        });
+        
+        return { left: left, top: top, width: right - left, height: bottom - top };
+    }
+    
+    $.each(plot.getAxes(), function (i, axis) {
+        if (!axis.show)
+            return;
+        
+        var box = getBoundingBoxForAxis(plot, axis);
+        
+        $('<div class="axisTarget" style="position:absolute;left:' + box.left + 'px;top:' + box.top + 'px;width:' + box.width +  'px;height:' + box.height + 'px"></div>')
+            .data('axis.direction', axis.direction)
+            .data('axis.n', axis.n)
+            .css({ backgroundColor: "#f00", opacity: 0, cursor: "pointer" })
+            .appendTo(plot.getPlaceholder())
+            .hover(
+                function () { $(this).css({ opacity: 0.10 }) },
+                function () { $(this).css({ opacity: 0 }) }
+            )
+            .click(function () {
+                $("#click").text("You clicked the " + axis.direction + axis.n + "axis!")
+            });
+    });
+});
+</script>
+ </body>
+</html>