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+<!doctype html>
+<html>
+<head>
+  <title>Graph 3D tooltips</title>
+
+  <style>
+    body {font: 10pt arial;}
+  </style>
+
+  <script type="text/javascript" src="../../dist/vis.js"></script>
+
+  <script type="text/javascript">
+    var data = null;
+    var graph = null;
+
+    function custom(x, y) {
+      return (-Math.sin(x/Math.PI) * Math.cos(y/Math.PI) * 10 + 10);
+    }
+
+    // Called when the Visualization API is loaded.
+    function drawVisualization() {
+      var style = document.getElementById('style').value;
+      var withValue = ['bar-color', 'bar-size', 'dot-size', 'dot-color'].indexOf(style) != -1;
+
+      // Create and populate a data table.
+      data = new vis.DataSet();
+
+      // create some nice looking data with sin/cos
+      var steps = 5;  // number of datapoints will be steps*steps
+      var axisMax = 10;
+      var axisStep = axisMax / steps;
+      for (var x = 0; x <= axisMax; x+=axisStep) {
+        for (var y = 0; y <= axisMax; y+=axisStep) {
+          var z = custom(x,y);
+          if (withValue) {
+            var value = (y - x);
+            data.add({x:x, y:y, z: z, style:value});
+          }
+          else {
+            data.add({x:x, y:y, z: z});
+          }
+        }
+      }
+
+      // specify options
+      var options = {
+        width:  '600px',
+        height: '600px',
+        style: style,
+        showPerspective: true,
+        showGrid: true,
+        showShadow: false,
+
+        // Option tooltip can be true, false, or a function returning a string with HTML contents
+        //tooltip: true,
+        tooltip: function (point) {
+          // parameter point contains properties x, y, z
+          return 'value: <b>' + point.z + '</b>';
+        },
+
+        keepAspectRatio: true,
+        verticalRatio: 0.5
+      };
+
+      var camera = graph ? graph.getCameraPosition() : null;
+
+      // create our graph
+      var container = document.getElementById('mygraph');
+      graph = new vis.Graph3d(container, data, options);
+
+      if (camera) graph.setCameraPosition(camera); // restore camera position
+
+      document.getElementById('style').onchange = drawVisualization;
+    }
+  </script>
+  <script src="../googleAnalytics.js"></script>
+</head>
+
+<body onload="drawVisualization()">
+
+<p>
+  <label for="style"> Style:
+    <select id="style">
+      <option value="bar">bar</option>
+      <option value="bar-color">bar-color</option>
+      <option value="bar-size">bar-size</option>
+
+      <option value="dot">dot</option>
+      <option value="dot-line">dot-line</option>
+      <option value="dot-color">dot-color</option>
+      <option value="dot-size">dot-size</option>
+
+      <option value="grid">grid</option>
+      <option value="line">line</option>
+      <option value="surface">surface</option>
+    </select>
+  </label>
+</p>
+
+<div id="mygraph"></div>
+
+<div id="info"></div>
+</body>
+</html>
