Aqui te adjunto parte de mi código, nose si eso te puede aclarar, pense que me explicación es basante clara, ¿donde te liaste?
<form id="formulario" name="formulario" method="post" action= >
<table width="875" border="0" cellspacing="0">
<table width="900" border="0" cellspacing="0" >
<tr>
<td width="2"> </td>
<td width="868" bgcolor="#F7F7F7"><table width="868" border="0" cellspacing="0" bordercolor="1">
<tr valign="top" bordercolor="2">
<td width="138" height="37" bordercolor="0"><table width="138" border="1" cellspacing="0" id="Turno">
<tr>
<td width="134" height="37" bgcolor="#2157D7"><div align="center" class="Estilo6"><u>Turno</u></div>
<div align="center" class="Estilo3">
<select name="
Turno-1T" class="Estilo2" id="Turno-1T" onChange="JavaScript
:asignarHoras()" >
<?php
for ($i=0; $i<$numTurnos; $i++ )
echo "<option value='".$j."'>" .$regTurnos[$i][0] ."</option>";
?>
</select>
</div></td>
</tr>
</table>
<!-- tabla horario --> </td>
<td width="161" bordercolor="1"><table width="161" height="37" border="1" cellspacing="0" id="Horario">
<tr valign="top">
<td width="170" height="37" bgcolor="#2157D7"><div align="center" class="Estilo6"><u>Horario</u></div>
<div align="center" class="Estilo3">
<input name="
HInicial-1T" type="text" class="Estilo2" id="HInicial-1T" size="6" align="middle" >
<input name="
HFinal-1T" type="text" class="Estilo2" id="HoraFinal3" size="6" align="middle">
<span class="Estilo4"><u>
</u></span></div></td>
</tr>
</table>
<!-- tabla Operario --> </td>
<td width="573" bordercolor="1"><table width="560" border="1" cellspacing="0" id="Operario">
<tr>
<td width="558" height="37" bgcolor="#2157D7"><div align="center" class="Estilo6"><u>Operario</u></div>
<div align="center" class="Estilo3"><span class="Estilo4"><u><u>
<input name="
CodOP-1T" type="text" class="Estilo4" id="CodOP-1T" value="" size="10">
</u>
</u></span>
<select name="
NomOP-1T" size class="Estilo4" id="
NomOP-1T""10">
<?php ?>
</select>
<span class="Estilo4"><u>
</u></span></div></td>
</tr>
</table></td>
</tr>
</table></td>
<td width="24" bgcolor="#F7F7F7"><table height="34" border="0" cellspacing="0">
<tr>
<td width="20"><span class="Estilo4"><u><u><u><u>
</u></u> </u></u></span></td>
</tr>
</table></td>
</tr>
</table>
<table width="875" border="0" cellspacing="0">
<tr>
<td colspan="3" align="left" valign="top" bgcolor="#F7F7F7">
<table width="870" border="1" cellspacing="0">
<tr valign="top">
<td width="31" rowspan="2" bgcolor="#FFFFCC"><p> <div align="center">
</div>
</p> <p> </p>
<p> <span class="Estilo4"><u><u>
<input name="
IdTurno-1R" type="text" class="Estilo4" id="IdTurno-1R" style="visibility:hidden " value="" size="3">
</u></u></span></p>
</td>
<td width="743" rowspan="2" bgcolor="#FFFFFF">
<table border="0" cellspacing="0" id="segunadaFila">
<tr valign="top" height="142">
<td width="72">
<table width="72" height="151" border="1" cellspacing="0" id="Maquina">
<tr valign="top" height="68">
<td bgcolor="#CCCCFF"><div align="center" class="Estilo3 Estilo5">
<p><u><span class="Estilo8">MAQUINA</span></u> </p>
</div>
<div align="center" class="Estilo3">
<p>
<select name="
Maq-1R" class="Estilo1" id="Maq-1R">
................................continua