function guifi_radio_add_wds_form(&$form, &$form_state)
{
    guifi_log(GUIFILOG_TRACE, "function guifi_radio_add_wds_form", $form_state['newInterface']);
    $form_weight = 0;
    $form_state['values']['newInterface'] = $form_state['newInterface'];
    // store all the form_stat values
    guifi_form_hidden($form, $form_state['values'], $form_weight);
    // Initialize filters
    if (empty($form_state['values']['filters'])) {
        $form_state['values']['filters'] = $form_state['filters'];
    }
    drupal_set_title(t('Choose an AP from the list to link with %ssid', array('%ssid' => $form_state['values']['radios'][$form_state['filters']['from_radio']]['ssid'])));
    // Filter form
    $form['filters_region'] = guifi_devices_select_filter($form_state, 'guifi_radio_add_wds_confirm_submit');
    $form['list-devices'] = guifi_devices_select($form_state['values']['filters'], 'guifi_radio_add_wds_confirm_submit');
    return FALSE;
}
/**
 * Select device
 *
 * URL: http://guifi.net/guifi/js/select-device/%
 */
function guifi_ahah_select_device()
{
    $cid = 'form_' . $_POST['form_build_id'];
    $cache = cache_get($cid, 'cache_form');
    $action = arg(3);
    if ($cache) {
        $form = $cache->data;
        if ($action == 'guifi_node_distances') {
            $node = guifi_node_load($_POST['filters']['from_node']);
            $form['list-devices'] = guifi_node_distances_list($_POST['filters'], $node);
        } else {
            $form['list-devices'] = guifi_devices_select($_POST['filters'], $action);
        }
        cache_set($cid, $form, 'cache_form', $cache->expire);
        // Build and render the new select element, then return it in JSON format.
        $form_state = array();
        $form['#post'] = array();
        $form = form_builder($form['form_id']['#value'], $form, $form_state);
        $output = drupal_render($form['list-devices']);
        drupal_json(array('status' => TRUE, 'data' => $output));
    } else {
        drupal_json(array('status' => FALSE, 'data' => ''));
    }
    exit;
}