How to use scrollbar in xul

Dear, In a xul file, I use scrollbar in the following codes, but it seems that the scrollbar not work. I don't know how to bind the scrollbar with the 'vbox'. hbox width='110' vbox width='100px' height='100px' max-height='100px' label value=testscrollbar1/

How to use jquery in xul files of thunderbird

Dear, When I wanted to use jquery in XUL files, the event was not responded. For example, codes like $(selectorName).hide(500);has no action. If you provide me some documents related, I will be very appreciate. Thanks very much. Best regards, Huan Wang