jQuery On Method Issue

Hi 2 all i am using jQuery .On method to append rows , when i click add row button first time it append row but when second and next time it will do nothing . I need to know why my .on method is not working
Here is my Code

$form = $this->beginWidget('CActiveForm', array(
    'id' => 'productoption-form',
    'enableAjaxValidation' => false,
));

?>
Fields with * are required.
errorSummary($model); ?>


    labelEx($model, 'title'); ?>
    textField($model, 'title', array('size' => 60, 'maxlength' => 255)); ?>
    error($model, 'title'); ?>



    
Add Product Options


    
Name
    
Price
    



    

        


            
        
        

            
        
        
 
    


    isNewRecord ? 'Create' : 'Save'); ?>


endWidget(); ?>