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<head>
<meta charset="utf-8">
<link rel="stylesheet" type="text/css" href="style.css">
<meta charset="utf-8" />
<link rel="stylesheet" href="https://cdn.leafletjs.com/leaflet-0.7.1/leaflet.css" />
<script src="https://d3js.org/d3.v4.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/leaflet/0.7.1/leaflet.min.js"></script>
<script src="https://code.jquery.com/jquery-1.10.2.min.js"></script>
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<h1>Select a country</h1>
<div id="combobox"></div>
<div id="map" style="width: 900px; height: 550px"></div>
<div id="chart"></div>
<body>
<script src="vis.js"></script>
</body>
Modified http://cdn.leafletjs.com/leaflet-0.7.1/leaflet.js to a secure url
Modified http://code.jquery.com/jquery-1.10.2.min.js to a secure url
https://d3js.org/d3.v4.min.js
https://cdn.leafletjs.com/leaflet-0.7.1/leaflet.js
https://code.jquery.com/jquery-1.10.2.min.js