$(document).ready(function() {

    $('input.sub-one, input.sub-two').click(function(){
                
        $('input.sub-one:checked').each(function(){        
             $('p.spec input').attr("disabled", true);
        });

        $('input.sub-two:checked').each(function(){            
             $('p.spec input').removeAttr("disabled");
        });

        return true;
    });


});