如何将下一个菜单变成下拉菜单？
此时菜单未关闭而打开
谢谢
示例：

array('visible'=>$this->AA('withdrawal'),'tag'=>'withdrawal',
               'label'=> '<i class="fa fa-university"></i>'.Yii::t("default",'Withdrawal'),
               'itemOptions'=>array('class'=>''), 
               'items'=>array(        
                 array('visible'=>$this->AA('incomingwithdrawal'),'tag'=>'incomingwithdrawal',
                 'label'=>'<i class="fa fa-paypal"></i>'.Yii::t("default","Withdrawal List"), 
                 'url'=>array('admin/incomingwithdrawal')),                                

                  array('visible'=>$this->AA('withdrawalsettings'),'tag'=>'withdrawalsettings',
                  'label'=>'<i class="fa fa-paypal"></i>'.Yii::t("default","Settings"), 
                 'url'=>array('admin/withdrawalsettings')),                                   
             )),