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) {
		aboutOn = newImg("/img/nav/aboutOn.gif");
		aboutOff = newImg("/img/nav/aboutOff.gif");

		astrologyOn = newImg("/img/nav/astrologyOn.gif");
		astrologyOff = newImg("/img/nav/astrologyOff.gif");

		overviewOn = newImg("/img/nav/overviewOn.gif");
		overviewOff = newImg("/img/nav/overviewOff.gif");

		readingOn = newImg("/img/nav/readingOn.gif");
		readingOff = newImg("/img/nav/readingOff.gif");

		whatIsOn = newImg("/img/nav/whatIsOn.gif");
		whatIsOff = newImg("/img/nav/whatIsOff.gif");

		expectOn = newImg("/img/nav/expectOn.gif");
		expectOff = newImg("/img/nav/expectOff.gif");

		factsOn = newImg("/img/nav/factsOn.gif");
		factsOff = newImg("/img/nav/factsOff.gif");

		sessionOn = newImg("/img/nav/sessionOn.gif");
		sessionOff = newImg("/img/nav/sessionOff.gif");

	}
}