Simple call function with mouseDown

Wow my AS is rusty…

basically I have an MC menu that I want to move to the left when you click and hold on another MC called leftButton, here’s what I have.

In main timeline:


menu.moveLeft = function() {
	this._x -= 4;
}

triggerMotion = function() {
	this.onEnterFrame = this.moveLeft;
}

Then in the leftButton MC:


onClipEvent (mouseDown) {
	triggerMotion;
}

This obviously doesnt work, but I know its close, could someone help slap me back into writing AS :trout:

Thanks