<?php echo $form->labelEx($model,'country'); ?>
	<?php $list=CHtml::listData($country,'id', 'country'); ?>
	<?php echo CHtml::dropDownList('country_id','',$list,array(
			  												'ajax'=>array(
																			'type'=>'POST',
																			'url'=>CController::createUrl('test/states'),
																			'update'=>'#stateselect',
																			'dataType'=>'json',
																			 'success'=>'js:function(data){
               																								 jQuery("#stateselect").removeAttr("disabled");
                																							 jQuery("#country_id").append(data);
																										   }',
																			)
															)
										);?>
	<?php echo $form->error($model,'country_id'); ?>
</div>


<!--ajax state div-->

<?php
echo CHtml::dropDownList('stateselect','', array());
?>
<!--end of ajax div -->
public function actionStates()
		{
			$state=State::model()->findAll('country_id=:country_id',
						  array(':country_id'=>(int) $_POST['country_id']));
			$country=Country::model()->findAll();
			foreach($state as $value=>$name)
			{
				$stateselect .= CHtml::tag('option', array('value'=>$value),CHtml::encode($name),true);
			}

			foreach($country as $value=>$name)
			{
				$country_id .= CHtml::tag('option', array('value'=>$value),CHtml::encode($name),true);
			}

			// return data (JSON formatted)
			echo CJSON::encode(array(
			'stateselect'=>$stateselect,
			'country_id'=>$country_id
));
		}