Placeholder'ы для webform

function main_form_alter(&$form, &$form_state, $form_id) {
  if ($form_id == 'webform_client_form_2' || $form_id == 'webform_client_form_3' || $form_id == 'webform_client_form_1') { // Пример: "webform_client_form_26"
    foreach ($form["submitted"] as $key => $value) {
      if (in_array($value["#type"], array("textfield", "webform_email", "textarea"))) {
        $form["submitted"][$key]['#attributes']["placeholder"] = t($value["#title"]);
        $form["submitted"][$key]['#attributes']["onfocus"] = "this.placeholder = ''";
        $form["submitted"][$key]['#attributes']["onblur"] = "this.placeholder =" . "'" . t($value["#title"]) . "'";
        $form["submitted"][$key]['#title_display'] = 'invisible';
      }
    }
  }
}