function hightlight_image(img) {

/*	switch (img.name) {
		case "img_1":
			img.src = "images/new/nav6.gif";
			break
		case "img_2":
			img.src = "images/new/nav5.gif";
			break
		case "img_3":
			img.src = "images/new/nav4.gif";
			break
		case "img_4":
			img.src = "images/new/nav3.gif";
			break
		case "img_5":
			img.src = "images/new/nav2.gif";
			break
		case "img_6":
			img.src = "images/new/nav1.gif";
			break
	}
*/
}

function remove_hightlight(img) {

/*	switch (img.name) {
		case "img_1":
			img.src = "images/new/nav1.gif";
			break
		case "img_2":
			img.src = "images/new/nav2.gif";
			break
		case "img_3":
			img.src = "images/new/nav3.gif";
			break
		case "img_4":
			img.src = "images/new/nav4.gif";
			break
		case "img_5":
			img.src = "images/new/nav5.gif";
			break
		case "img_6":
			img.src = "images/new/nav6.gif";
			break
	}
*/
}