<html>
<head>
  <title>Timeline | A lot of grouped data</title>

  <script src="../../../docs/js/jquery.min.js"></script>
  <script src="../../../dist/vis.js"></script>
  <link href="../../../dist/vis-timeline-graph2d.min.css" rel="stylesheet" type="text/css" />

  <style type="text/css">
    body {
      color: #4D4D4D;
      font: 10pt arial;
    }
  </style>
  
</head>

<body onresize="/*timeline.checkResize();*/">
<h1>Timeline vertical visibility</h1>


<button onclick="showVisibleItems()">Show current 