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Test Info:

<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<script>
function boom()
{
var frameDoc = document.getElementById("f").contentDocument;
frameDoc.adoptNode(document.createElement("select"));
}
</script>
</head>
<body onload="boom();">
<iframe id="f"></iframe>
</body>
</html>