d3.js: show tooltip in absolutely positioned DIV, which position is calculated taking screen size+scroll into consideration

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<!DOCTYPE html>
<html>
  <head>
    <script type="text/javascript" src="https://cdn.jsdelivr.net/npm/d3@2.9.0/d3.v2.min.js"></script>
    <style type="text/css">
       body
       {
          position: relative;  /* https://www.barelyfitz.com/screencast/html-training/css/positioning/ */
       }
​
/*
       svg
       {
          margin-left: 33px;
          margin-top: 17px;
       }
*/
    </style>
  </head>
  <body onResize="window.location=window.location;">
    <script type="text/javascript" src="treemap-svg.js"></script>
  </body>
</html>
    

Modified http://mbostock.github.com/d3/d3.js?2.9.0 to a secure url

https://mbostock.github.com/d3/d3.js?2.9.0