var preloadFlag = false;

function preloadImages() {
	if (document.images) {

		homeOff = newImage("images/home-off.gif");
		aboutOff = newImage("images/about-off.gif");
		eventsOff = newImage("images/events-off.gif");
		joinOff = newImage("images/join-off.gif");
		membersOff = newImage("images/members-off.gif");
		linksOff = newImage("images/links-off.gif");
		contactOff = newImage("images/contact-off.gif");

		homeOn = newImage("images/home-on.gif");
		aboutOn = newImage("images/about-on.gif");
		eventsOn = newImage("images/events-on.gif");
		joinOn = newImage("images/join-on.gif");
		membersOn = newImage("images/members-on.gif");
		linksOn = newImage("images/links-on.gif");
		contactOn = newImage("images/contact-on.gif");	
				
		preloadFlag = true;
	}
}

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

function swapImages (anImage, theNewImage) {
	if (document.images && preloadFlag == true) {
		
		document.images[anImage].src = eval(theNewImage).src;
	}
}