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");

		servicesOn = newImg("/img/nav/servicesOn.gif");
		servicesOff = newImg("/img/nav/servicesOff.gif");

		contactOn = newImg("/img/nav/contactOn.gif");
		contactOff = newImg("/img/nav/contactOff.gif");

		residentialOn = newImg("/img/nav/residentialOn.gif");
		residentialOff = newImg("/img/nav/residentialOff.gif");

		remodelingOn = newImg("/img/nav/remodelingOn.gif");
		remodelingOff = newImg("/img/nav/remodelingOff.gif");

		multifamilyOn = newImg("/img/nav/multifamilyOn.gif");
		multifamilyOff = newImg("/img/nav/multifamilyOff.gif");

		commercialOn = newImg("/img/nav/commercialOn.gif");
		commercialOff = newImg("/img/nav/commercialOff.gif");

	}
}