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) {
		snav_stubes_off_over = newImage("pics/snav_stubes_off-over.gif");
		snav_ltubes_off_over=newImage("pics/snav_ltubes_off-over.gif");
		snav_compact_off_over=newImage("pics/snav_compact_off-over.gif");
		snav_ubent_off_over=newImage("pics/snav_ubent_off-over.gif");
		snav_hid_off_over=newImage("pics/snav_hid_off-over.gif");
		snav_batteries_off_over=newImage("pics/snav_batteries_off-over.gif");
		snav_brokenlamps_off_over=newImage("pics/snav_brokenlamps_off-over.gif");
		mg_stubes_off_snav_stubes_off_over=newImage("pics/mg_stubes_off-snav_stubes_o.gif");
		mg_ltubes_off_snav_ltubes_off_over=newImage("pics/mg_ltubes_off-snav_ltubes_o.gif");
		mg_compact_off_snav_compact_off_over=newImage("pics/mg_compact_off-snav_compact.gif");
		mg_ubent_off_snav_ubent_off_over=newImage("pics/mg_ubent_off-snav_ubent_off.gif");
		mg_hid_off_over=newImage("pics/mg_hid_off-over.gif");
		mg_batteries_off_snav_batteries_off_over=newImage("pics/mg_batteries_off-snav_batte.gif");
		mg_brocken_off_snav_brokenlamps_off_over=newImage("pics/mg_brocken_off-snav_brokenl.gif");
		preloadFlag=true;
	}
}