protected function registerJQueryUI()
{
$cs = Yii::app()->getClientScript();
if ($this->themeUrl === null) {
$this->themeUrl = $cs->getCoreScriptUrl() . '/jui/css';
}
$cs->registerCssFile($this->themeUrl . '/' . $this->theme . '/' . $this->cssFile);
$cs->registerPackage('jquery.ui');
}