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) {
		nt_over = newImage("images/map/nt-over.jpg");
		ausMapDirectory_04_qld_over = newImage("images/map/ausMapDirectory_04-qld_over.jpg");
		qld_over = newImage("images/map/qld-over.jpg");
		wa_over = newImage("images/map/wa-over.jpg");
		sa_over = newImage("images/map/sa-over.jpg");
		nz_over = newImage("images/map/nz-over.jpg");
		nsw_over = newImage("images/map/nsw-over.jpg");
		ausMapDirectory_16_vic_over = newImage("images/map/ausMapDirectory_16-vic_over.jpg");
		ausMapDirectory_16_nsw_over = newImage("images/map/ausMapDirectory_16-nsw_over.jpg");
		act_nsw_over = newImage("images/map/act-nsw_over.jpg");
		act_over = newImage("images/map/act-over.jpg");
		ausMapDirectory_18_nsw_over = newImage("images/map/ausMapDirectory_18-nsw_over.jpg");
		vic_over = newImage("images/map/vic-over.jpg");
		vic_nsw_over = newImage("images/map/vic-nsw_over.jpg");
		ausMapDirectory_21_nsw_over = newImage("images/map/ausMapDirectory_21-nsw_over.jpg");
		tas_over = newImage("images/map/tas-over.jpg");
		preloadFlag = true;
	}
}