Frequently updating who window

ID:157302
 
Apr 4 2010, 12:38 pm
In my game, I have a "who" system that works as so:
mob
    verb
        Who()
            set  hidden=1
            winshow(usr, "Who", 1)//Shows the Who Window
            src<<output("Players online:","Who")
            for(var/mob/a in world) // Players   in the  world              if(a.client) // If theyre  people
                    src<<output(a,"Who")

Now, every time I do this, it does in fact open up the Who window, and it does display what I want it to. But, when you close the window, and press the who button again, the window opens, and the previous who I did was there, and then the new one. I know why it repeats, but my question is how can I do it so When ever you press it, it only shows just a list of people who are on without me having to output the players online which causes it to repeat?
Apr 4 2010, 12:44 pm
output(null,"blah").
Apr 4 2010, 1:24 pm
In response to Garthor
Thanks! I didn't know that null would clear the output~