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Test Info:

<html xmlns="http://www.w3.org/1999/xhtml" xmlns:math="http://www.w3.org/1998/Math/MathML" class="test-wait">
<head>
<script>
function boom()
{
var mi = document.getElementById("mi");
var textA = mi.firstChild;
var textB = document.createTextNode("b");
var textSpace = document.createTextNode(" ");
var floater = document.getElementById("floater");
mi.appendChild(textB);
mi.appendChild(textSpace);
mi.removeChild(textA);
mi.removeChild(textSpace);
floater.parentNode.removeChild(floater);
document.documentElement.removeAttribute("class");
}
</script>
</head>
<body onload="setTimeout(boom, 30);">
<math:mi id="mi">a<p><span style="float: right;" id="floater" /></p></math:mi>
</body>
</html>