def tabselect(self, notebook, b, tab):
                new_tab=notebook.get_nth_page(tab)
                old_tab=notebook.get_nth_page(self.tab)
                self.tab = tab
                for c in self._dynamic_childs:
                    if new_tab.__gtype__.name =='GtkSocket':
                        w= new_tab.get_plug_window()
                        if new_tab.get_id()==c:
                                self.send_message(new_tab,w.xid,"Visible\0\0\0\0\0\0\0\0\0\0\0\0\0")

                    if old_tab.__gtype__.name =='GtkSocket':
                        w= old_tab.get_plug_window()
                        if old_tab.get_id()==c:
                                self.send_message(old_tab,w.xid,"Hidden\0\0\0\0\0\0\0\0\0\0\0\0\0\0")