var	imgOn = new Array(),
	iI = 0;

function menuLoad(imgName) {
	imgOn[iI] = new Image();
	imgOn[iI].src = "images/menu/" + imgName + "-off.gif";

	iI++;
}

function menuOver(img) {
	document.images[img].src = "images/menu/" + img + "-on.gif";
}

function menuOut(img) {
	document.images[img].src = "images/menu/" + img + "-off.gif";
}

menuLoad("about-us");
menuLoad("jobs");
menuLoad("order-tracking");
menuLoad("contact-us");
menuLoad("view");
menuLoad("checkout");