Código HTML:
[PHP]<form id="formulario" name="formulario" method="post" action="guardar_articulo.php" enctype="multipart/form-data">
<input id="accion" name="accion" value="alta" type="hidden">
<table class="fuente7" width="98%" cellspacing=0 cellpadding=3 border=0>
<?php
$query_familias="SELECT * FROM familias WHERE borrado=0 ORDER BY nombre ASC";
$res_familias=mysql_query($query_familias);
$contador=0;
?>
<tr>
<td width="5%">FAMILIA</td>
<td><select id="cboFamilias" name="AcboFamilias" class="comboGrande" onChange="document.getElementById('AcbosubFamilias ').style.display='inline';">
<option value="0">Seleccione un Tipo</option>
<?php
while ($contador < mysql_num_rows($res_familias)) { ?>
<option value="<?php echo mysql_result($res_familias,$contador,"codfamilia") ?>"><?php echo mysql_result($res_familias,$contador,"nombre")?></option>
<? $contador++;
} ?>
</select>
<img src="../img/botonnuevafamilia.jpg" width="100" height="20" align="absmiddle" border="1" onClick="nueva_familia()"onMouseOver="style.cursor =cursor">
<img src="../img/botonaceptar.jpg" width="73" height="20" align="absmiddle" border="1" onclick="document.location.reload();" onMouseOver="style.cursor=cursor">
</td>
</tr>
<?php
$query_subfamilias="select * from articulos,familias where articulos.codfamilia=familias.codfamilia order by articulos.descripcion ASC";
$res_subfamilias=mysql_query($query_subfamilias);
$contador=0;
?>
<tr>
<td width="5%">SUBFAMILIA</td>
<td><select id="cbosubFamilias" name="AcbosubFamilias" class="comboGrande">
<option value="0">Seleccione un Tipo</option>
<?php
while ($contador < mysql_num_rows($res_subfamilias)) { ?>
<option value="1<?php echo mysql_result($res_subfamilias,$contador,"codfamili a")?>"><?php echo mysql_result($res_subfamilias,$contador,"descripci on")?></option>
<? $contador++;
} ?>
</select>
</td>[/PHP]
[/HTML]