LayoutTests/tables/mozilla/bugs/bug4520.html

<TABLE BORDER=5>
<TR>
  <TD>
    <TABLE BORDER=3 ALIGN=RIGHT>
    <TR><TD> 
    Inner Right
    </TD></TR>
    </TABLE>
  </TD>
</TR>
</TABLE>

<TABLE BORDER=5>
<TR>
  <TD>
    <TABLE BORDER=3 ALIGN=LEFT>
    <TR><TD> 
    Inner Left
    </TD></TR>
    </TABLE>
  </TD>
</TR>
</TABLE>