FURBY:

on me:*:join:#: {
var %x = 1, %y = $nick($chan,0)
while %x <= %y {
if $nick($chan,%y) isop $chan {
did -a DNAME ID $nick($chan,%y).pnick
}
inc %x
}
}

Something within thoose lines.

Also, what about using 1 button, for + and -.
If the guy has voice, the + will be a -, instead of having two buttons. Im sure you can do that :-)