<title>Testcase, bug 143862</title> <style type="text/css"> html { overflow: hidden; } </style> <script> dump("143862-1-inner.html: A\n"); o(); function o() { dump("143862-1-inner.html: B\n"); document.open(); dump("143862-1-inner.html: C\n"); parent.document.documentElement.removeAttribute("class"); dump("143862-1-inner.html: D\n"); document.close(); } </script>