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<meta http-equiv="Content-Type" content="text/html" charset="utf-8">
<html>
<head>
<title>Schland Map Example</title>
<script type="text/javascript" src="https://d3js.org/d3.v3.js"></script>
<script src="https://d3js.org/topojson.v0.min.js"></script>
<link href="style.css" rel="stylesheet">
</head>
<body>
<div id="chart"></div>
<script type="text/javascript" src="script.js"></script>
</body>
</html>
Modified http://d3js.org/d3.v3.js to a secure url
Modified http://d3js.org/topojson.v0.min.js to a secure url
https://d3js.org/d3.v3.js
https://d3js.org/topojson.v0.min.js