protected function _renderVarInput_category($form, &$var, &$vars)
{
$GLOBALS['injector']->getInstance('Horde_PageOutput')->addScriptFile('form_helpers.js', 'horde');
$this->_addOnLoadJavascript('addEvent(document.getElementById(\'' . $form->getName() . '\'), \'submit\', checkCategory);');
return '<input type="hidden" name="new_category" />' . Horde_Prefs_CategoryManager::getJavaScript($form->getName(), $var->getVarName()) . Horde_Prefs_CategoryManager::getSelect($var->getVarName(), $var->getValue($vars));
}