if (document.images) {

/* main nav */
	nav_attractions_off = new Image();
	nav_attractions_off.src = "images/nav_attractions_off.jpg";
	nav_attractions_on = new Image();
	nav_attractions_on.src = "images/nav_attractions_on.jpg";

	nav_hotels_off = new Image();
	nav_hotels_off.src = "images/nav_hotels_off.jpg";
	nav_hotels_on = new Image();
	nav_hotels_on.src = "images/nav_hotels_on.jpg";

	nav_gettingthere_off = new Image();
	nav_gettingthere_off.src = "images/nav_gettingthere_off.jpg";
	nav_gettingthere_on = new Image();
	nav_gettingthere_on.src = "images/nav_gettingthere_on.jpg";

	nav_events_off = new Image();
	nav_events_off.src = "images/nav_events_off.jpg";
	nav_events_on = new Image();
	nav_events_on.src = "images/nav_events_on.jpg";

	nav_photos_off = new Image();
	nav_photos_off.src = "images/nav_photos_off.jpg";
	nav_photos_on = new Image();
	nav_photos_on.src = "images/nav_photos_on.jpg";

	nav_contact_off = new Image();
	nav_contact_off.src = "images/nav_contact_off.jpg";
	nav_contact_on = new Image();
	nav_contact_on.src = "images/nav_contact_on.jpg";

/* city nav */
	nav_atlanta_off = new Image();
	nav_atlanta_off.src = "images/nav_atlanta_off.gif";
	nav_atlanta_on = new Image();
	nav_atlanta_on.src = "images/nav_atlanta_on.gif";

	nav_nashville_off = new Image();
	nav_nashville_off.src = "images/nav_nashville_off.gif";
	nav_nashville_on = new Image();
	nav_nashville_on.src = "images/nav_nashville_on.gif";

	nav_neworleans_off = new Image();
	nav_neworleans_off.src = "images/nav_neworleans_off.gif";
	nav_neworleans_on = new Image();
	nav_neworleans_on.src = "images/nav_neworleans_on.gif";

}

function Swap() {
	if (document.images) {
	for (var i=0; i<Swap.arguments.length; i+=2) {
		document[Swap.arguments[i]].src = eval(Swap.arguments[i+1] + ".src");
	}
	}
}