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							<!DOCTYPE HTML>
<html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=585745
-->
<head>
  <title>Test for Bug 585745</title>
  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
</head>
<body>
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=585745">Mozilla Bug 585745</a>
<p id="display"></p>
<div id="content" style="display: none">
  
</div>
<pre id="test">
<script type="application/javascript">

/** Test for Bug 585745 **/

  var a = document.createElementNS("http://www.w3.org/1998/Math/MathML", 'mrow');
  var b = document.createElementNS("http://www.w3.org/1999/xhtml", 'span');
  var htmlProto = Object.getPrototypeOf(b);
  var mathMLProto = Object.getPrototypeOf(a);
  // XXXbz once bug 560072 is fixed, we should be able to use
  // getOwnPropertyDescriptor here.
  Object.defineProperty(mathMLProto, "style", {
      get: htmlProto.__lookupGetter__("style"),
    });

  var threw = false;
  try {
    a.style;
  } catch(e) {
    threw = true;
  }
  is(threw, true,
     "Getting .style off a mathml element should throw in this case");
</script>
</pre>
</body>
</html>