<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"> <title>Bug 235593 Reference</title> </head> <body> <table> <tr><td> <table><tr><td style="background: #DDDDDD">a a</td><td></td></tr></table> </td></tr> </table> </body> </html>