durance  { background-color: #FFFFCC; }
  </style>

  <script src="../../../dist/vis.js"></script>
  <link href="../../../dist/vis-timeline-graph2d.min.css" rel="stylesheet" type="text/css" />
<!--    -->
</head>
<body>
<p>
  This example demonstrates editable groups (reordering and hiding).
  <button onclick="showAllGroups()">Restore Hidden</button>
</p>
<div id="visualization"></div>

<script>
  // http://motocal.com/
  var groups = new vis.DataSet([
	{"content": "Formula E", "id": "Formula E", "value": 1