UPDATE: 7th January 2011
Description changes and spelling mistakes.

UPDATE: 9th January 2011
All timers are halted at midnight everyday.

This script allows users to place adverts/messages to repeat themselves every 15 minutes in a channel. The script also allows the user to place differnt adverts/messages in two or more differnt channels even with the same bot.

The advert will also turn off if the user leaves the chbannel or quits from the server.

Commands
!timer end - To cancel a nicks timer, Channel staff only
!timer off - Cancel your own timer
!timer on - Make a timer
!timer - Check the status of the timer

Just post it straight into your/bots remotes :)

on *:TEXT:!timer end*:#:{
  if ($nick isop $chan) || ($nick ishop $chan) || ($nick isowner $chan) || (& isin $nick($2,$1).pnick) {
    if ($3) {
      if ($timer $+ $3 $+ _ $+ $chan) {
        msg $chan Sorry $3 your timer has been canceled by $nick
        timer $+ $3 $+ _ $+ $chan off
      }
      else { msg $chan Sorry $nick $+ , $nick does not have an active timer in place on $chan | halt }
    }
    else { msg $chan You didn't enter a nick, Please use !timer end <nick>. | halt }
  }
  else { msg $chan Sorry, Only channel staff can end a timer for someone else. }
}
on *:TEXT:!timer on*:#:{
  if (!$timer $+ $nick $+ _ $+ $chan) {
    if (!$23) {
        msg $chan Your timer has been activated.
        set %message_ $+ $nick $3-22
        timer $+ $nick $+ _ $+ $chan $+ first 1 2 msg $chan New! $chr(91) $+ $nick $+ $chr(93) $chr(91) $+ $read(Ids.txt, s, $nick) $+ $chr(93) $+ : %message_ $+ $nick
        timer $+ $nick $+ _ $+ $chan 0 900 msg $chan $chr(91) $+ $nick $+ $chr(93) $chr(91) $+ $read(Ids.txt, s, $nick) $+ $chr(93) $+ : %message_ $+ $nick
        timerturnalloff 00:00 1 1 timers off
        timerturnallodd2 00:00 1 1 msg $chan All timers have been halted
      }
      else { msg $chan Sorry $nick $+ , Your timer can only contain a maximum of 20 words. | halt }
    }
    else { msg $chan You already have an active timer for this channel, Please use !timer off to end your current timer. }
}
on *:TEXT:!timer off:#:{
  if ($timer $+ $nick $+ _ $+ $chan) {
    msg $chan $nick Your timer has been de-activated.
    timer $+ $nick $+ _ $+ $chan off
    unset %message_ $+ $nick
    else { msg $chan You do not have an active timer to be de-activated. }
  }
}
on *:TEXT:!timer:#:{
  if ($timer $+ $nick $+ _ $+ $chan) {
    notice $nick Your timer is Online: %message_ $+ $nick
  } 
  else { notice $nick Your timer is Offline, Please use !timer on <message>. }
}
on *:PART:*:#:{
  if ($timer $+ $nick $+ _ $+ $chan) {
    timer $+ $nick $+ _ $+ $chan off
    msg $chan $nick $+ 's timer has been de-activated due to part from the channel.
  }
}
on *:QUIT:*:#:{
  if ($timer $+ $nick $+ _ $+ $chan) {
    timer $+ $nick $+ _ $+ $chan off
    msg $chan $nick $+ 's timer has been de-activated due to quit from the server.
  }
}