Quick image question

programming flash
1

Do I have to use a listener in order to make the onRelease function work? Right now it doesn’t and I think it’s because the png isn’t loaded before the onRelease function is invoked.

main["container"+j].createEmptyMovieClip("Plus",j+3);
        var Plus:MovieClip = main["container"+j].Plus;
        Plus.loadMovie("icons/plus.png");
        Plus._x = 10;
        Plus._y = 110;
        Plus.onRelease = function(){
                trace("hi");
        }

I hate making listeners for everything. I hope AS3 makes this process easier.
Thanks for any info.