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

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		hercules_01_over = newImage("images/hercules_01-over.gif");
		hercules_02_over = newImage("images/hercules_02-over.gif");
		hercules_03_over = newImage("images/hercules_03-over.gif");
		hercules_04_over = newImage("images/hercules_04-over.gif");
		hercules_05_over = newImage("images/hercules_05-over.gif");
		hercules_06_over = newImage("images/hercules_06-over.gif");
		hercules_07_over = newImage("images/hercules_07-over.gif");
		hercules_08_over = newImage("images/hercules_08-over.gif");
		hercules_09_over = newImage("images/hercules_09-over.gif");
	    hercules_tire_01_over = newImage("images/hercules_tire_01-over.gif");
		hercules_tire_02_over = newImage("images/hercules_tire_02-over.gif");
		hercules_tire_03_over = newImage("images/hercules_tire_03-over.gif");
		hercules_tire_04_over = newImage("images/hercules_tire_04-over.gif");
		hercules_tire_05_over = newImage("images/hercules_tire_05-over.gif");
		hercules_tire_06_over = newImage("images/hercules_tire_06-over.gif");
		hercules_tire_07_over = newImage("images/hercules_tire_07-over.gif");
		hercules_tire_08_over = newImage("images/hercules_tire_08-over.gif");
		hercules_tire_09_over = newImage("images/hercules_tire_09-over.gif");
	    tireeducation_04_over = newImage("images/tireeducation_04-over.gif");
		tireeducation_05_over = newImage("images/tireeducation_05-over.gif");
		tireeducation_06_over = newImage("images/tireeducation_06-over.gif");
		tireeducation_07_over = newImage("images/tireeducation_07-over.gif");
		tireeducation_08_over = newImage("images/tireeducation_08-over.gif");
		tireeducation_09_over = newImage("images/tireeducation_09-over.gif");
		map_locations_01_ImageMap_01_over = newImage("images/map_locations_01-ImageMap_0.gif");
		map_locations_01_ImageMap_02_over = newImage("images/map_locations_01-ImageMa-03.gif");
		map_locations_01_ImageMap_03_over = newImage("images/map_locations_01-ImageMa-04.gif");
		map_locations_01_ImageMap_04_over = newImage("images/map_locations_01-ImageMa-05.gif");
		preloadFlag = true;
	}
}