<html xmlns="http://www.w3.org/1999/xhtml"> <head> <title>pseudo double SetInitialChildlist</title> <style> .cat::-moz-table-row-group { overflow: scroll;} tr { position: absolute;} </style> </head> <body> <table class="cat"> <tr> <td>Cell</td> </tr> </table> </body> </html>