este es mi formulario talvez no este haciendo algo bien
Código HTML:
<form action="<?php echo $editFormAction; ?>" method="post" name="form2" id="form2">
<table align="center">
<tr valign="baseline">
<td nowrap="nowrap" align="lefth">Cedula:</td>
<td><span id="sprytextfield4">
<input name="identificacion" type="text" value="<?php echo htmlentities($row_buscar['cedula'], ENT_COMPAT, 'utf-8'); ?>" size="32" readonly="readonly" />
<span class="textfieldRequiredMsg">Campo requerido.</span></span></td>
</tr>
<tr valign="baseline">
<td nowrap="nowrap" align="lefth">Nombre:</td>
<td><span id="sprytextfield3">
<input name="nombre" type="text" value="<?php echo htmlentities($row_buscar['nombre'], ENT_COMPAT, 'utf-8'); ?>" size="32" readonly="readonly" />
<span class="textfieldRequiredMsg"> Campo requerido.</span></span></td>
</tr>
<tr valign="baseline">
<td nowrap="nowrap" align="lefth">Primer Apellido:</td>
<td><span id="sprytextfield2">
<input name="primer_apellido" type="text" value="<?php echo htmlentities($row_buscar['apellido1'], ENT_COMPAT, 'utf-8'); ?>" size="32" readonly="readonly" />
<span class="textfieldRequiredMsg"> Campo requerido.</span></span></td>
</tr>
<tr valign="baseline">
<td nowrap="nowrap" align="lefth">Segundo Apellido:</td>
<td><span id="sprytextfield1">
<input name="segundo_apellido" type="text" value="<?php echo htmlentities($row_buscar['apellido2'], ENT_COMPAT, 'utf-8'); ?>" size="32" readonly="readonly" />
<span class="textfieldRequiredMsg">Campo requerido.</span></span></td>
</tr>
<tr valign="baseline">
<td nowrap="nowrap" align="lefth">Grado Academico:</td>
<td><label for="grado_academico"></label>
<span id="spryselect2">
<select name="grado_academico" id="grado_academico">
<option value="" selected="selected">[Seleccione el Grado]</option>
<option>Bachillerato</option>
<option>Licenciatura</option>
<option>Maestria</option>
<option>Doctorado</option>
</select>
<span class="selectRequiredMsg">Seleccione una opción.</span></span></td>
</tr>
<tr valign="baseline">
<td nowrap="nowrap" align="lefth">Especialidad:</td>
<td><input type="text" name="especialidad" value="" size="32" /></td>
</tr>
<tr valign="baseline">
<td nowrap="nowrap" align="lefth"> </td>
<td><input type="submit" value="Insertar" />
<input type="button" name="Submit" value="Botón" onclick="borra('identificacion,nombre,primer_apellido,segundo_apellido',this.form2)"><?php echo $mensaje; ?></td>
</tr>
</table>
<input type="hidden" name="MM_insert" value="form2" />
</form>