573127-1.html - mozsearch

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<!DOCTYPE html>

<html>

<head>

<script>

function boom()

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

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

  emptyset.setAttributeNS(null, "mathvariant", "3");

  mspace.appendChild(emptyset);

  document.body.appendChild(mspace);

  emptyset.removeAttribute('mathvariant');

</script>

</head>

<body onload="boom()"></body>

</html>