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) {
		monknav_01_enter_over = newImage("monkey/monknav_01-enter_over.gif");
		monknav_01_plant_over = newImage("monkey/monknav_01-plant_over.gif");
		monknav_01_anim_over = newImage("monkey/monknav_01-anim_over.gif");
		monknav_01_prnt_over = newImage("monkey/monknav_01-prnt_over.gif");
		monknav_01_lrn_over = newImage("monkey/monknav_01-lrn_over.gif");
		monknav_01_trvl_over = newImage("monkey/monknav_01-trvl_over.gif");
		monknav_01_arch_over = newImage("monkey/monknav_01-arch_over.gif");
		monknav_01_fine_over = newImage("monkey/monknav_01-fine_over.gif");
		monknav_01_milit_over = newImage("monkey/monknav_01-milit_over.gif");
		monknav_01_bird_over = newImage("monkey/monknav_01-bird_over.gif");
		monknav_01_antiq_over = newImage("monkey/monknav_01-antiq_over.gif");
		monknav_01_map_over = newImage("monkey/monknav_01-map_over.gif");
		preloadFlag = true;
	}
}