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<html>
<head>
<title>Gantt Chart Example 1</title>
<link type="text/css" href="https://mbostock.github.io/d3/style.css" rel="stylesheet" />
<link type="text/css" href="example.css" rel="stylesheet" />
</head>
<body>
<a id="forkme_banner" href="https://dk8996.github.io/Gantt-Chart/" target="_blank">View on GitHub</a>
<script type="text/javascript" src="https://d3js.org/d3.v3.min.js"></script>
<script type="text/javascript" src="https://static.mentful.com/gantt-chart-d3v2.js"></script>
<script type="text/javascript" src="example.js"></script>
</body>
</html>
Modified http://d3js.org/d3.v3.min.js to a secure url
Modified http://static.mentful.com/gantt-chart-d3v2.js to a secure url
https://d3js.org/d3.v3.min.js
https://static.mentful.com/gantt-chart-d3v2.js