<table>
<tbody>
<tr>
<td><script type="text/javascript" src="menu/embedded_main_menu.js"></script></td>
</tr>
</tbody>
</table>
can give problems when you just want nothing else in that cell

Netscape Composer 7.2 will add a <br> after </script> and Seamonkey will make a mess of the whole document.
They just want something that is not <script> or <noscript> in that cell.
The solution seems to be to place <a name="qqqq"> </a>, just behind </script>. Don't forget the blank between > and < !
The preview in SM will look wrong, but the browser will display only the menu and nothing else.
This construction will validate as correct HTML 4.01 Transitional