<!doctype html>
<html>
<head>
    <title>Network | Hierarchical layout</title>

    <style type="text/css">
        body {
            font: 10pt sans;
        }

        #mynetwork {
            width: 600px;
            height: 600px;
            border: 1px solid lightgray;
        }
    </style>

    <script type="text/javascript" src="../exampleUtil.js"></script>
    <script type="text/javascript" src="../../../dist/vis.js"></script>
    <link href="../../../dist/vis-network.min.css" rel="stylesheet" t