function moveArrow(target) {
	document.getElementById('item1').style.backgroundImage='none';
	document.getElementById('item2').style.backgroundImage='none';
	document.getElementById('item3').style.backgroundImage='none';
	document.getElementById('item4').style.backgroundImage='none';
	document.getElementById('item5').style.backgroundImage='none';
	document.getElementById('item6').style.backgroundImage='none';
	document.getElementById('item7').style.backgroundImage='none';
	document.getElementById('item8').style.backgroundImage='none';
	document.getElementById(eval(target).id).style.backgroundImage='url(media/image/menu-arrow.png)';
	document.getElementById(eval(target).id).style.backgroundRepeat='no-repeat';
	document.getElementById(eval(target).id).style.backgroundPosition='0px 7px';
}
function removeArrow(target) {
	document.getElementById('item1').style.backgroundImage='none';
	document.getElementById('item2').style.backgroundImage='none';
	document.getElementById('item3').style.backgroundImage='none';
	document.getElementById('item4').style.backgroundImage='none';
	document.getElementById('item5').style.backgroundImage='none';
	document.getElementById('item6').style.backgroundImage='none';
	document.getElementById('item7').style.backgroundImage='none';
	document.getElementById('item8').style.backgroundImage='none';
}
function setArrow(target) {
	document.getElementById(target).style.backgroundImage='url(media/image/menu-arrow.png)';
	document.getElementById(target).style.backgroundRepeat='no-repeat';
	document.getElementById(target).style.backgroundPosition='0px 7px';
}