AS2-CS4 unnullify "Null"?

Question

I'm creating a card game tutorial (well, a small part of what will be a tutorial) and ran into a wall.
A movieclip has an onRollOver, onRollOut, onPress and onRelease state, each doing different things (go figure). In the onRelease state, I nullified all 3 other states so that the movieclip becomes frozen, i.e. movieclip.onRollOver=null; etc.
How do I disarm the null when a reset button (resetBtn) is pressed?
Attached is an example of my problem.

Answer 1

Generally I wouldn't null all the event handlers, instead I would just disable the clip.
myClip.enabled=false;
That will prevent the events from being dispatched.
Then it is easy to have a function that goes through all your clips (you'll have to keep track of them some how) and set the enabled property to true.
Or you could do the same type of thing with reassigning the event handlers.
I'm guessing that you've originally set them up something like this:
myClip.onRollOver=function(){
//some code
That isn't the best practice. You should do it like this:
myClip.onRollOver=handleOverClip;
function handleOverClip(){
//some code
Then you can easily reapply it by just reassigning the function.