Noob transition to AS3 question

Question

Slowly learning my way into AS3, here is the original code that i am trying to move into AS3 from AS2. The function is to allow the mouse over state to stay selected until the mouse moves off of the selected area. Here is the AS2 code:
mc.onRollOver = function(){
mc.gotoAndStop(2);
mc.onRollOut = function(){
mc.gotoAndStop(1);
How i have changed it: This is where i need help
mc.addEventListener(MouseEvent.ROLL_OVER)=function(){
mc.gotoAndStop(2); }
mc.addEventListener(MouseEvent.ROLL_OVER)=function(){
mc.gotoAndStop(1); }
What am i missing with the code?

Answer 1

I tried this code, and got a duplicate error:
mc.addEventListener(MouseEvent.ROLL_OUT, overHandler);
function overHandler(evt:MouseEvent):void {
     mc.gotoAndStop(2);
DId you define the overHandler function twice? That's about the only way you could get a duplicate error... I think you want:
mc.addEventListener(MouseEvent.ROLL_OUT, outHandler);
function outHandler(evt:MouseEvent):void {
     mc.gotoAndStop(1);