$this->widget('CMultiFileUpload',array(
    'name'=>'files',
    'accept'=>'jpg|png',
    'max'=>3,
    'remove'=>Yii::t('ui','Remove'),
    //'denied'=>'', message that is displayed when a file type is not allowed
    //'duplicate'=>'', message that is displayed when a file appears twice
    'htmlOptions'=>array('size'=>25),
));