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Test Info:

<!DOCTYPE html>
<html class="reftest-wait">
<head>
<script type="text/javascript">
function boom()
{
var x = document.getElementById("x");
var y = document.createElement("span");
y.appendChild(document.createTextNode("c"));
x.parentNode.insertBefore(y, x);
document.documentElement.className = "";
}
</script>
<style type="text/css">
div:first-letter { color: green }
</style>
</head>
<body onload="boom();"><div style="width: 0em;"><span>A B<span id="x">D</span></span></div></body>
</html>