<link rel="stylesheet" href="dns.css" type="text/css" media="all" />
<link rel="stylesheet" href="https://unpkg.com/leaflet@1.3.0/dist/leaflet.css" integrity="sha512-Rksm5RenBEKSKFjgI3a41vrjkw4EVPlJ3+OiI65vTjIdo9brlAacEuKOiQ5OFh7cOI1bkDwLqdLw3Zg0cRJAAQ==" crossorigin="anonymous" />
<script src="https://unpkg.com/leaflet@1.3.0/dist/leaflet.js" integrity="sha512-C7BBF9irt5R7hqbUm2uxtODlUVs+IsNu2UULGuZN7gM+k/mmeG4xvIEac01BtQa4YIkUpp23zZC4wIwuXaPMQA==" crossorigin="anonymous"></script>
- <script type="text/javascript" src="https://code.jquery.com/jquery-3.1.1.min.js" integrity="sha256-hVVnYaiADRTO2PzUGmuLJr8BLUSjGIZsDYGmIJLv2b8=" crossorigin="anonymous"></script>
+ <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.4.1/jquery.min.js" integrity="sha256-CSXorXvZcTkaix6Yvo6HppcZGetbYMGWSFlBw8HfCJo=" crossorigin="anonymous"></script>
<script type="text/javascript" src="dns.js"></script>
</head>
<body onload="createMap('map', 'json/<%= @zone %>.json')">