Something

on *:Connect: {
  set %f6 on
  .timer 1 30 set %f7 off | echo -a Autojoin aborted.
}
alias f6 {
  if ( %f6 == on ) {
    join %autojoinlist
    /timers stop
    set %f6 off
  }
} 

menu channel {
  ..Autojoin
  .Add: { { set %autojoinlist $$?="Type in channels to add to your auto join list." 
  echo -a Your autojoin list is %autojoinlist $+ ! } }
  .Clear all: { { unset %autojoinlist 
  echo -a Your autojoin list has been deleted! } }
  .Check List: { { echo -a Your autojoin list is %autojoinlist $+ !
    }
  }