More functions on one button... how to?

1

I am aware you can have a code like


myButton.onRelease = function (){
gotoAndPlay(2);
movieHolder.loadMovie("movie.swf");
}

My question is how to apply more than one function to a button, but define the functions later, something like


myButton.onRelease = playing;
myButton.onRelease = loading;

function playing () {
gotoAndPlay(2);
}
function loading () {
movieHolder.loadMovie("movie.swf");
}

Is this possible, and if yes, what should be the correct code?