534366-1.html - mozsearch

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<html>

<head>

<style type="text/css">

body { font-family: monospace; width: 4ch; }

body::first-line { }

body *::before { content: 'w';}

</style>

<script type="text/javascript">

function boom()

  var de = document.documentElement;

  var body = document.body;

  var span = document.createElementNS("http://www.w3.org/1999/xhtml", "span");

  var r1 = document.createElementNS("http://www.w3.org/1998/Math/MathML", "mrow");

  var mmm = document.createElementNS("http://www.w3.org/1998/Math/MathML", "mmultiscripts");

  body.appendChild(span);

  r1.appendChild(document.createElementNS("http://www.w3.org/1998/Math/MathML", "mrow"));

  body.appendChild(r1);

  body.appendChild(mmm);

  de.offsetHeight;

  r1.appendChild(document.createElementNS("http://www.w3.org/1998/Math/MathML", 'mrow'));

  de.offsetHeight;

  mmm.appendChild(document.createElementNS("http://www.w3.org/1998/Math/MathML", 'mrow'));

  de.offsetHeight;

window.addEventListener("load", boom);

</script>

</head>

<body></body>

</html>