<html class="reftest-wait"> <head> <style> caption { color: green } </style> <script> function boom() { document.body.offsetHeight; var table = document.getElementById("table"); var newtbody = document.createElement("tbody"); var newrow = document.createElement("tr"); var newcell = document.createElement("td"); newcell.appendChild(document.createTextNode("a new row 2")); newrow.appendChild(newcell); newtbody.appendChild(newrow); table.insertBefore(newtbody, table.firstChild); var caption = document.createElement("caption"); caption.appendChild(document.createTextNode("this is the caption")); table.insertBefore(caption, table.firstChild); newtbody = document.createElement("tbody"); newrow = document.createElement("tr"); newcell = document.createElement("td"); newcell.appendChild(document.createTextNode("a new row 1")); newrow.appendChild(newcell); newtbody.appendChild(newrow); table.insertBefore(newtbody, table.firstChild); document.body.offsetHeight; document.documentElement.className = ""; } </script> </head> <body onload="boom();"> <table id="table"> </table> </body> </html>