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Test Info:

<!DOCTYPE html> ↩
<html> ↩
<head> ↩
<script> ↩
function boom()↩
{↩
document.documentElement.offsetHeight;↩
document.getElementById("f").appendChild(document.createTextNode("\u00AD"));↩
document.documentElement.offsetHeight;↩
}↩
</script> ↩
</head> ↩
<body onload="boom();"><fieldset id="f"> </fieldset></body> ↩
</html>↩