on *:invite:#:{
  if (($nick isop #) || ($nick ishop #)) {
    if ($nick($chan,0) <= 3) { 
      notice $nick Sorry, there are not enough users on #. You need atleast 3 users
    } 
    if ($nick($chan,0) >= 3 { 
      join #
      msg $chan Thanks for inviting me, $nick!
    }
  }
  else {
    notice $nick You have to be an Op or Halfop on # to invite me.
  }
}