Web Forms :: Calloutextender Prevent To Use Other Buttons At Another UpdatePanel

I have master page with a button of user's connection and with a LinkButton. The problem is that inside the master page I have a registration page that conatins some validators, and callout extender. When I click the button of connection or the LinkButton that are outside the registration page, but on the menu page (=the masterpage), I get the callout extender that pop out without a need. If i wasnt so clear: I cant use any button outside the registraion pagem because of the validators and the calloutextender, who are at another UpdatePanel at all! The buttons I cant use are at another UpdatePanel, and still a else validation from another place is pop ou and cancel my abillity to use those buttons.