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Test Info:

<html>
<head>
<script type="text/javascript">
function boom()
{
var s = document.getElementById("s");
s.appendChild(s.previousSibling);
s.parentNode.removeAttribute("class");
document.documentElement.offsetHeight;
s.appendChild(document.createTextNode(" "));
}
</script>
<style type="text/css">
.flfr:first-letter { float: right; }
</style>
</head>
<body onload="boom();" class="flfr">&#xFEB7; <span id="s"></span></body>
</html>