/*imgBeltway = new Image();
imgBeltway.src = 'images/tn_01.jpg';
imgBeltway1 = new Image();
imgBeltway1.src = 'images/tn_02b.jpg';
imgBeltway2 = new Image();
imgBeltway2.src = 'images/tn_04.jpg';
imgBeltway3 = new Image();
imgBeltway3.src = 'images/tn_05.jpg';
imgBeltway4 = new Image();
imgBeltway4.src = 'images/tn_06.jpg';
imgBeltway5 = new Image();
imgBeltway5.src = 'images/tn_07.jpg';
imgBeltway6 = new Image();
imgBeltway6.src = 'images/tn_08.jpg';*/

function mOver(n, img) {
	document.images[n].src = 'images/' + img;
}