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Test Info:
<head>
<script>
function boom ()
{
var p = document.getElementById("p");
var s = document.getElementById("s");
s.insertBefore(document.createElement("div"), p);
document.documentElement.removeAttribute("class");
}
</script>
<style>
strong:first-letter { color: red; }
</style>
</head>
<body onload="setTimeout(boom, 30);">
<div>,,, <strong id="s"><p id="p">1</p>2</strong> ...</div>
</body>
</html>