- <html xmlns="http://www.w3.org/1999/xhtml" xmlns:xul="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
- <xul:titlebar id="a"/>
- <script>
- var html = document.firstChild;
- var a = document.getElementById('a')
- document.removeChild(html)
- document.appendChild(a)
- </script>
- </html>
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