Starting a function as a coroutine in javascript using onclick via NGUI Button

So, in NGUI, you can use a Button script attached to a game object by dragging a game object with another script attached to it into the "notify" field of the NGUI Button. Then you can select a method in that script to call. I've written a script that needs a delay in the middle of it. So here's what I've written:

 function enableWrongByTag()
 {
     for(var go : GameObject in GameObject.FindGameObjectsWithTag("Wrong"))
     {
     go.SetActive (true);
     }
         for(var stop : GameObject in GameObject.FindGameObjectsWithTag("None"))
     {
     stop.SetActive (false);
     }
     //insert delay somehow...
     yield WaitForSeconds (5.0);
         for(var stop : GameObject in GameObject.FindGameObjectsWithTag("None"))
     {
     stop.SetActive (true);
     }
         for(var go : GameObject in GameObject.FindGameObjectsWithTag("Wrong"))
     {
     go.SetActive (false);
     }
         for(var moo : GameObject in GameObject.FindGameObjectsWithTag("Correct"))
     {
     moo.SetActive (false);
     }
 }

Now I know that this function needs to be started as a coroutine in order to use the "yield WaitForSeconds(5.0)". But if I put the StartCoroutine(EnableWrongByTag()) BEFORE the actual script line, or in a function Start, then my function does not actually show up in the method list of the NGUI Button. So how can I run this script using an NGUI Button?