index.html

<!doctype html>
<html lang="en">

<head>
    <meta charset="utf-8">
    <title>VisJS Network Minimap</title>
    <link href="css/default.css" rel="stylesheet" />
    <link href="https://cdnjs.cloudflare.com/ajax/libs/vis/4.21.0/vis-network.min.css" rel="stylesheet" />
</head>

<body>
    <div class="wrapper">
        <div id="mynetwork"></div>
        <div id="minimapWrapper"
            style="position: absolute; margin: 5px; border: 1px solid #ddd; overflow: hidden; background-color: #FFF; z-index: 9;"
            class="minimapWrapperIdle">
            <img id="minimapImage" class="minimapImage" />
            <div id="minimapRadar" class="minimapRadar"></div>
        </div>
    </div>
</body>
<script src="https://cdnjs.cloudflare.com/ajax/libs/vis/4.21.0/vis-network.min.js"></script>
<script src="js/minimap.js"></script>

</html>