<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN"> <html> <head> <title></title> <style> body { margin: 20px; } tr { background: gray; } .t2 tr { outline: 1px solid gray; -moz-outline-radius: .3em; } .t1 tr { outline: 1px solid red; -moz-outline-radius: .3em; } </style> </head> <body> <table id="table1" class="t1"> <tr><td>AAAA</td></tr> <tr><td>AAAA</td></tr> <tr><td>AAAA</td></tr> <tr><td>AAAA</td></tr> </table> <table class="t2"> <tr><td>AAAA</td></tr> <tr><td>AAAA</td></tr> <tr><td>AAAA</td></tr> <tr><td>AAAA</td></tr> </table> <br/> <form method="get" action="#"> <input type="button" onclick="showBug(); return false;" value="Trigger bug"/> </form> </body> </html>