<!--

if (document.images) {
	nexton = new Image();
	nexton.src = "images/next-on.gif"
	nextoff = new Image();
	nextoff.src = "images/next-off.gif"
	backon = new Image();
	backon.src = "images/back-on.gif"
	backoff = new Image();
	backoff.src = "images/back-off.gif"
}

function img_act(imgName) {
	if (document.images) {
		imgOn = eval(imgName + "on.src");
		document [imgName].src = imgOn;
	}
}

function img_inact(imgName) {
	if (document.images) {
		imgOff = eval(imgName + "off.src");
		document [imgName].src = imgOff;
	}
}