Yii include JS and CSS

<?php

Yii::app()->clientScript->registerScriptFile(
        Yii::app()->baseUrl . '/js/slider/jquery.flexslider-min.js', CClientScript::POS_END
);

Yii::app()->clientScript->registerCssFile(
        Yii::app()->baseUrl . '/js/slider/flexslider.css', CClientScript::POS_HEAD
);

?>