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) {
		nav001 = newImage("/images/bluechip_arrow_on.gif");
		nav002 = newImage("/images/ausmap_nsw.gif");
		nav003 = newImage("/images/ausmap_vic.gif");
		nav004 = newImage("/images/ausmap_qld.gif");
		nav005 = newImage("/images/ausmap_nt.gif");
		nav006 = newImage("/images/ausmap_sa.gif");
		nav007 = newImage("/images/ausmap_wa.gif");
		nav008 = newImage("/images/ausmap_tas.gif");
		preloadFlag = true;
	}
}