Code:
on !*:part:#:{ 
  if ($nick($chan,0) <= 10) { part $chan }
}
on *:kick:#:{
  if ($nick($chan,0) <= 10) && ($knick != $me) { part $chan }
}
on !*:quit:{
  var %i = 1
  while ($chan(%i)) {
    if ($nick($v1,0) <= 10) { part $chan(%i) }
    inc %i
  }
}