<html xmlns="http://www.w3.org/1999/xhtml" class="reftest-wait"> <head><script type="text/javascript"> <![CDATA[ function boom() { const HTML_NS = "http://www.w3.org/1999/xhtml"; var tr4 = document.createElementNS(HTML_NS, 'tr'); document.getElementById('tbody1').appendChild(tr4); var span1 = document.createElementNS(HTML_NS, 'td'); tr4.insertBefore(span1, null); document.documentElement.removeAttribute("class"); } function ol(e) { window.removeEventListener("load", ol, false); setTimeout(boom, 400); } window.addEventListener("load", ol, false); ]]> </script> </head> <body><table><tbody id="tbody1"><tr><td rowspan="0"></td></tr></tbody></table></body> </html>