var img = new Array();
	img[0]  = new Image();
	img[1]	= new Image();
	img[0].src = '../img/arrow1.gif';
	img[1].src = '../img/arrow2.gif';

	function rollOver(n)
	{
		document.images[n].src = img[1].src;
	}

	function rollOut(n)
	{
		document.images[n].src = img[0].src;
	}