Extending QF Select

I need to create a simple Yes/No select element, but am doing something wrong and QF is creating the element with the number of options doubled (Yes / No / Yes / No). Following is my class; class yesNo extends HTML_QuickForm_select { function yesNo(){

             $options = array('1' => 'Yes',
                        '0' => 'No');        $data = func_get_args();
       parent::HTML_QuickForm_select($data[0], $data[1], $options);

} } and I'm registering it with: $this->registerElementType('yesNo',

                                  'elements/yesNo.element.php',
                                  'yesNo');

Obviously I am doing something wrong. Help appreciated! Aaron