Validar diferentes checkbox en un formulario

[brandu]

este es parte del codigo:

<th scope="col"><div align="right">Color :</div></th>
<th scope="col">&nbsp;</th>
<th height="45" scope="col"><br />
<label>
<table width="227" border="0" align="left" cellpadding="0" cellspacing="0">
<? while ($row4=mysql_fetch_array($result)) { ?>
<tr>
<td width="27" bgcolor="<? echo $row4['hexadecimal'] ?>">&nbsp;</td>
<td width="43"><div align="center">
<input type="checkbox" name="color[]"value="<? echo $row4['id_color'] ?>" />
</div></td>
<td width="157" height="22"><? echo $row4['color'] ?></td>

</tr>
<? } ?>
<a href="javascript:abrir('color.php?id=<? $row ['id_producto'] ?>')">Otros Colores </a>
</table>
<p align="left">&nbsp;</p>
</label></th>
</tr>
<tr>
<th scope="col"><div align="right">Uso :</div></th>
<th scope="col">&nbsp;</th>
<th height="38" scope="col"><table width="362" height="109" border="0" align="left" cellpadding="0" cellspacing="0">

<tr>
<td height="22"><input type="checkbox" name="uso[]" value="Hogar">
Hogar</td>
<td><input type="checkbox" name="uso[]" value="Oficina">
Oficina</td>
<td><input type="checkbox" name="uso[]" value="Auditorio">
Auditorio</td>
</tr>
<tr>
<td height="23"><label>
<input type="checkbox" name="uso[]" value="Hospital">
Hospital</label></td>
<td><label>
<input type="checkbox" name="uso[]" value="Hoteles">
Hoteles</label></td>
<td><label>
<input type="checkbox" name="uso[]" value="Diseño Especial">
Dise&ntilde;o Especial </label></td>
</tr>
<tr>
<td height="23"><input type="checkbox" name="uso[]" value="Jardin">
Jardin
</label></td>
<td><input type="checkbox" name="uso[]" value="Escolar">
Escolar
<label></label></td>
<td><input type="checkbox" name="uso[]" value="Restaurant/Bar">
Restaurant/Bar
<label></label></td>
</tr>
<tr>
<td width="89" height="39"><label>
<input type="checkbox" name="uso[]" value="Tienda de Autoservicio">
Tienda de Autoservicio </label></td>
<td width="106"><label>
<input type="checkbox" name="uso[]" value="Salon de Fiestas">
Salon de Fiestas </label></td>
<td width="100">&nbsp;</td>
</tr>
</table></th>
</tr>
<tr>
<th scope="col"><div align="right">Estilo :</div></th>
<th scope="col">&nbsp;</th>
<th height="38" scope="col"><table width="367" height="78" border="0" align="left" cellpadding="0" cellspacing="0">
<tr>
<td height="39"><label>
<input type="checkbox" name="estilo[]" value="Rustico" />
</label>
R&uacute;stico
</td>
<td><input type="checkbox" name="estilo[]" value="Minimalista" />
Minimalista
</td>
<td><input type="checkbox" name="estilo[]" value="Contemporanea" />
Contempor&aacute;neo</td>
</tr>
<tr>
<td width="109" height="39"><label>
</label>
<label>
<input type="checkbox" name="estilo[]" value="Colonial" />
Colonial</label></td>
<td width="130"><label>
</label>
<label>
<input type="checkbox" name="estilo[]" value="Modernista" />
Modernista</label></td>
<td width="128"><label>
</label>
<label></label></td>
</tr>
</table></th>
</tr>

<tr>
<th scope="col"><div align="right">Material :</div></th>
<th scope="col">&nbsp;</th>
<th height="38" scope="col"><div align="left">
<table width="369" height="117" border="0" cellpadding="0" cellspacing="0">
<tr>
<td height="39"><input type="checkbox" name="material[]" value="Herreria" />
Herrer&iacute;a
</td>
<td><input type="checkbox" name="material[]" value="Madera" />
Madera
</td>
<td><input type="checkbox" name="material[]" value="Granito/Cuarzo" />
Granito/Cuarzo</td>
</tr>
<tr>
<td height="39"><label>
<input type="checkbox" name="material[]" value="MDF" />
MDF</label></td>
<td><label>