EventUtil.addEventHandler(window,"load",startMover);
function startMover(){
	EventUtil.addEventHandler(
		document.getElementById("outer")
		,"mousemove",mouseMove);
}
function mouseMove(){
	e = EventUtil.getEvent();
	var position = e.pageX;
	var offset = position - 6;
	for (i=1; i<=2; i++){
		document.getElementById("movingarrow"+i).style.left = offset+'px';
		document.getElementById("movingarrow"+i).style.display = 'block';
	}
}