Gotoandstop on another scene

hi i made a rollover menu with help from this tutorial http://www.kirupa.com/developer/mx/dropdownmenu.htm
and it works fine, my problem is that if i want to send the playhead to any frame on the main scene (or _root scene), from the buttons on the dropdown menu, it will not let me because i am on the timeline of the MC. any ideas will be appriciated.
thank you