Stop looping on a hittest

1

I have a mc that slides in when the mouse is over it, using a hittest. heres the code:



onClipEvent (load) {
this._x = 670;
vel = 10
}
onClipEvent (enterFrame) {
	if(this.hitTest(_root._xmouse,_root._ymouse,true))
		_root.newy = 412;
	else 
		_root.newy = 630;

	fukx += (_root.newy-_x)/vel
	_x = Math.round(fukx);
}

the reason im not using rollOver is that there are other rollOvers within the mc and 2 in one mc conflict.

i want to execute a function when hittest is detected, instead of using the


fukx += (_root.newy-_x)/vel
	_x = Math.round(fukx);

for the movement. so the code would become:



onClipEvent (enterFrame) {
	if(this.hitTest(_root._xmouse,_root._ymouse,true))
		runThisFunction();
	else 
		runAnotherFunction();
}

the only problem with this is that the code within the function loops indefinately when used with hittest. How can i tell flash to just run the code within the function once?

Thanks!