on *:text:!avon:#,?:{ msg $chan 12Auto-voice has now been turn on for $chan to disable it type !avoff . 
on *:Join:$chan:{ mode $chan +v $nick } 
on *:text:!avoff:#,?:{ msg $chan 12Auto-voice has now been disabled to reactivate it type !avon . 
on *:Join:$chan:{ mode $chan -v $nick }