if (document.images) { 
	agentson = new Image(); agentson.src = "../graphics/nav/agents-over.jpg";
	searchon = new Image(); searchon.src = "../graphics/nav/search-over.jpg";
	linksson = new Image(); linksson.src = "../graphics/nav/links-over.jpg";
	abouton = new Image(); abouton.src = "../graphics/nav/about-over.jpg";
	residentialon = new Image(); residentialon.src = "../graphics/nav/residential-over.gif";
	commercialon = new Image(); commercialon.src = "../graphics/nav/commercial-over.gif";
	multifamilyon = new Image(); multifamilyon.src = "../graphics/nav/multifamily-over.gif";
	landon = new Image(); landon.src = "../graphics/nav/land-over.gif";	
	listingson = new Image(); listingson.src = "../graphics/nav/listings-over.gif";
	mapsearchon = new Image(); mapsearchon.src = "../graphics/nav/mapsearch-over.gif";
	contacton = new Image(); contacton.src = "../graphics/nav/contact-over.jpg";

	agentsoff = new Image(); agentsoff.src = "../graphics/nav/agents-off.jpg";
	searchoff = new Image(); searchoff.src = "../graphics/nav/search-off.jpg";
	linkssoff = new Image(); linkssoff.src = "../graphics/nav/links-off.jpg";
	aboutoff = new Image(); aboutoff.src = "../graphics/nav/about-off.jpg";
	residentialoff = new Image(); residentialoff.src = "../graphics/nav/residential-off.gif";
	commercialoff = new Image(); commercialoff.src = "../graphics/nav/commercial-off.gif";
	multifamilyoff = new Image(); multifamilyoff.src = "../graphics/nav/multifamily-off.gif";
	landoff = new Image(); landoff.src = "../graphics/nav/land-off.gif";
	listingsoff = new Image(); listingsoff.src = "../graphics/nav/listings-off.gif";
	mapsearchoff = new Image(); mapsearchoff.src = "../graphics/nav/mapsearch-off.gif";
	contactoff = new Image(); contactoff.src = "../graphics/nav/contact-off.jpg";
}

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

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