Formulario select de tipos de archivos adjuntos

  $filemime = variable_get('deskarga_filemime', array());
  $consult = db_query("SELECT DISTINCT(filemime) FROM {files}");
  while ($mim = db_fetch_object($consult)) {
    $mime[$mim->filemime]= $mim->filemime;
  }
  $form['deskarga_filemime'] = array(
     '#type' => 'fieldset',
     '#collapsible' => TRUE,
     '#collapsed' => false,
     '#title' => t('Archivos descargables '),
  );
  $form['deskarga_filemime']['filemime'] = array(
     '#type'   => 'checkboxes',
     '#title'  => $adjunto,
     '#options' => $mime,
     '#multiple' => 1,
     '#default_value' => $filemime['filemime'],
  );