Chtml::radiobuttonlist

Hi I am new to Yii

I have a from with

?php echo CHtml::radioButtonList(‘Program’, 1, array(‘0’ =>“BUS” , ‘1’ =>“RES”),

                    array('title' => "Please contact your manager to find out the difference",


                         'refresh'=>'Disable',


                        'onclick' => "SaleTypeChanged();"))?>

depending up on the values from ‘Program’ function SaleTypeChanged(obj) has hide and show files in form it self.

Once I hit form Create I have custom Validation function to display errors and different validation on form field witch is working well . But it rest the selected values of radioButtonList to default .

How should I over come this

Thanks in Advance