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

function changeImages(img) {
	if (document.images) {
		document.map.src = "images/" + img;
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {

		bg = newImage("images/background.jpg");
		map = newImage("images/map.jpg");
		map_bedroom3 = newImage("images/map_bedroom3.jpg");
		map_pool = newImage("images/map_pool.jpg");
		map_garden = newImage("images/map_garden.jpg");
		map_gym = newImage("images/map_gym.jpg");
		map_bedroom2 = newImage("images/map_bedroom2.jpg");
		map_bedroom1 = newImage("images/map_bedroom1.jpg");
		map_kitchen = newImage("images/map_kitchen.jpg");
		map_livingarea = newImage("images/map_livingarea.jpg");
		map_bale = newImage("images/map_bale.jpg");
		
		preloadFlag = true;
	}
}