Example
array( 'class'=>'CButtonColumn', 'template'=>'{update}{add}{delete}', 'buttons'=>array( 'update'=>array( 'url'=>'$this->grid->controller->createUrl("/Extras/update", array("id"=>$data->id,"asDialog"=>1,"gridId"=>$this->grid->id))', 'click'=>'function(){$("#cru-frame").attr("src",$(this).attr("href")); $("#cru-dialog").dialog("open"); return false;}', 'visible'=>'($data->id===null)?false:true;' ), 'add' => array( 'label'=>'Add', 'imageUrl'=>Yii::app()->request->baseUrl.'/css/gridViewStyle/images/gr-plus.png', 'url'=>'$this->grid->controller->createUrl("/Extras/create", array("eid"=>$data->extras_id, "bid"=>'.$model->id.', "asDialog"=>1,"gridId"=>$this->grid->id))', 'click'=>'function(){$("#cru-frame").attr("src",$(this).attr("href")); $("#cru-dialog").dialog("open"); return false;}', 'visible'=>'($data->id===null)?true:false;' ), 'delete'=>array( 'url'=>'$this->grid->controller->createUrl("/Extras/delete", array("id"=>$data->primaryKey,"asDialog"=>1,"gridId"=>$this->grid->id))', ), ), ),
this was very helpful. thanks a lot.