[2morrowMan]

buttons_arr[1].addEventListener(MouseEvent.MOUSE_OVER, mouseOver);
buttons_arr[1].addEventListener(MouseEvent.MOUSE_OUT, mouseOut);
	
function mouseOver(event:MouseEvent):void
{
	trace("мышь наведена на "+event.target.name);
}
function mouseOut(event:MouseEvent):void
{
	trace("мышь ушла c "+event.target.name);
}