Cacher is the code snippet organizer for pro developers

<php
/**
 * Implements hook_theme().
 */
function popup_theme($existing, $type, $theme, $path) {
  $hooks['popup_form'] = array(
    'render element' => 'form',
    'path' => path_to_theme() . '/templates/forms',
    'template' => 'popup-form',
  );
  $hooks += drupal_find_theme_templates($hooks, '.tpl.php', $path);
  return $hooks;
}

/**
 * Implements hook_menu().
 */
function popup_menu() {
  $items = array();
  $items['popup/reset-password'] = array(
    'page callback' => 'drupal_get_form',
    'page arguments' => array('popup_pass_reset_form'),
    'access arguments' => array('access content'),
    'delivery callback' => 'popup_form_ajax_popup_callback',
    'type' => MENU_CALLBACK,
  );
  $items['form-pass-reset-ajax-callback'] = array(
    'page callback' => 'popup_form_pass_reset_ajax_callback',
    'access callback' => TRUE,
    'type' => MENU_CALLBACK,
    'delivery callback' => 'ajax_deliver',
  );
  return $items;
}

/**
 * Check if request is an AJAX call
 */
function check_is_ajax() {
  if (isset($_SERVER['HTTP_X_REQUESTED_WITH']) && strtolower($_SERVER['HTTP_X_REQUESTED_WITH']) == 'xmlhttprequest') {
    return TRUE;
  }
  return FALSE;
}

/**
 * Delivery callback function for ajax popups
 */
function popup_form_ajax_popup_callback($form) {

  if (!check_is_ajax()) {
    drupal_deliver_html_page(MENU_ACCESS_DENIED);
    module_invoke_all('exit');
    drupal_exit();
  }

  drupal_alter('form_' . $form['#form_id'] . '_ajax_popup_callback', $form);

  $form_html = render($form);

  $scripts = drupal_add_js();
  if (!empty($scripts['settings']['data'])) {
    $data = array();
    foreach($scripts['settings']['data'] as $ajax) {
      if (!empty($ajax['ajax'])) {
        $data[] = $ajax['ajax'];
      }
    }
    $json = drupal_json_encode(drupal_array_merge_deep_array($data));
    $js_element = array(
      '#tag' => 'script',
      '#value' => 'jQuery.extend(Drupal.settings.ajax, ' . $json . ');',
      '#attributes' => array(
        'type' => 'text/javascript',
      ),
    );
    $tag = theme('html_tag', array('element' => $js_element));
  }

  print $form_html;

  drupal_page_footer();
}

/**
 *  Implements hook_form_FORM_ID_alter().
 */
function popup_form_popup_pass_reset_form_alter(&$form, &$form_state, $form_id) {
  if ($form_id == 'popup_pass_reset_form' && $_GET['q'] == 'popup/reset-password') {
    $form['actions']['submit']['#ajax'] = array(
      'path' => 'form-pass-reset-ajax-callback',
      'progress' => array('message' => NULL),
    );
  }
}

/**
 *  Implements hook_form_FORM_ID_ajax_popup_callback_alter().
 */
function popup_form_popup_pass_reset_form_ajax_popup_callback_alter(&$form) {
  array_unshift($form['#theme'], "popup_form__popup_pass_reset_form");
}

/**
 * Ajax callback for the form popup_pass_reset_form
 */
function popup_form_pass_reset_ajax_callback() {

  list($form, $form_state) = ajax_get_form();
  drupal_process_form($form['#form_id'], $form, $form_state);

  $commands = array();

  $element['#parents'][] = 'name';
  $error = form_get_error($element);

  if (empty($error)) {
    drupal_set_message(t('Email was sent.'));
  }

  $messages = theme('status_messages');

  $commands[] = ajax_command_html('#messages-popup-mot-de-passe', $messages);
  return array('#type' => 'ajax', '#commands' => $commands);
}

/**
 * Preprocess form, threat forms like entities.
 */
function popup_preprocess_popup_form(&$variables) {
  $preprocess = array();
  $preprocess_entity_loaded = &drupal_static('popup_preprocess_loaded', FALSE);

  if (!$preprocess_entity_loaded) {
    $preprocess_entity_loaded = TRUE;
    $file = path_to_theme() . '/popup.preprocess.inc';
    if (is_file($file)) {
      require_once $file;
    }
  }
  foreach ($variables['form']['#theme'] as $theme_name) {
    if (strstr($theme_name, 'form_popup__')) {
      $preprocess[] = str_replace('popup_form__', 'popup_preprocess_popup_form__', $theme_name);
    }
  }
  foreach ($preprocess as $preproces) {
    if (function_exists($preproces)) {
      $preproces($variables);
    }
  }
}

?>

dmc.initFancybox = function (context, settings) {
  context.find(".popup").once("dmc_popup", function() {
    $(".popup").fancybox({
      'overlayShow' : true,
      'autoSize' : false,
      'autoHeight' : true,
      'width' : 377,
      afterShow: function() {
        if (Drupal.attachBehaviors) {
          console.log(settings);
          Drupal.attachBehaviors(this.wrap, settings);
        }
      },
      helpers: {
        overlay: {
          locked: false
        }
      }
    });

  });
};