Allow Rule For Dropdown Value...

Sorry, I dont know yii in javascript.

Im make dropdownlist where value get for dynamic show and hidden form-field. Any clue…?

My View




<?php $cs = Yii::app()->getClientScript();

        $cs->registerScript('seleccion',

         'function seleccion(obj){

if(obj=="1"){

document.getElementById("attend").style.display="block";

document.getElementById("un-attend").style.display="none";

return false;

}

if(obj=="15"){

document.getElementById("attend").style.display="none";

document.getElementById("un-attend").style.display="block";

return false;

}

if(obj=="16"){

document.getElementById("attend").style.display="none";

document.getElementById("un-attend").style.display="block";

return false;

}

if(obj=="17"){

document.getElementById("attend").style.display="none";

document.getElementById("un-attend").style.display="block";


return false;

}

if(obj=="18"){

document.getElementById("attend").style.display="none";

document.getElementById("un-attend").style.display="block";


return false;

}

if(obj=="23"){

document.getElementById("attend").style.display="none";

document.getElementById("un-attend").style.display="block";


return false;

}

if(obj=="24"){

document.getElementById("attend").style.display="none";

document.getElementById("un-attend").style.display="block";


return false;

}

if(obj=="25"){

document.getElementById("attend").style.display="none";

document.getElementById("un-attend").style.display="block";


return false;

}

if(obj=="26"){

document.getElementById("attend").style.display="none";

document.getElementById("un-attend").style.display="block";


return false;

}

else{

document.getElementById("attend").style.display="none";

document.getElementById("un-attend").style.display="none";


return false;

}


}


',

         CClientScript::POS_END

        );

        ?>




<?php echo $form->dropDownListRow($model, 'id_status', CHtml::listData(Status::model()->findAll(array('condition'=>"t.set_trx_kemunculan = 2")), 'id', 'fullName'), array(

        'prompt'=>'Pilih Status','onchange'=>'return seleccion(this.value)')); ?>  

And my div Attend and un-attend is


<div id="attend" class="row" style="display:none"><?php echo $form->datepickerRow($model, 'tgl_selesai', array(

                    'class' => 'span20 input-inline',

                    'options' => array(

                        'format' => 'dd-mm-yyyy',

                        'autoclose' => true,

                        'language' => 'id',

                        'weekStart' => 1,

                    ),'prepend' => '<i class="icon-calendar"></i>')); 

        ?></div>


<div id="un-attend" class="row" style="display:none"><?php echo $form->datepickerRow($model, 'tgl_selesai', array(

                    'class' => 'span20 input-inline',

                    'disabled' => 'disabled', // 

                    'options' => array(

                        'format' => 'dd-mm-yyyy',

                        'autoclose' => true,

                        'language' => 'id',

                        'weekStart' => 1,

                    ),'prepend' => '<i class="icon-calendar"></i>')); 

        ?></div>

I want to make it disable if div attend show block, because its require in my model.

thanks advance