function newImg(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function imgOn(iName) {
	if (document.images) {
		document.images[iName].src = eval(iName + "On.src");
		
	}
}

function imgOff(iName) {
	if (document.images) {
		document.images[iName].src = eval(iName + "Off.src");
	}
}

function preloadNav() {
	if (document.images) {
		homeOn = newImg("/img/nav/homeOn.gif");
		homeOff = newImg("/img/nav/homeOff.gif");
		aboutOn = newImg("/img/nav/aboutOn.gif");
		aboutOff = newImg("/img/nav/aboutOff.gif");
		newsOn = newImg("/img/nav/newsOn.gif");
		newsOff = newImg("/img/nav/newsOff.gif");
		knowOn = newImg("/img/nav/knowOn.gif");
		knowOff = newImg("/img/nav/knowOff.gif");

	}
}