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) {
		toscana = newImage("../im/toscana.gif");
		marche = newImage("../im/marche.gif");
		lazio = newImage("../im/lazio.gif");
		abruzzo = newImage("../im/abruzzo.gif");
		umbria = newImage("../im/umbria.gif");
		sardegna = newImage("../im/sardegna.gif");
		puglia = newImage("../im/puglia.gif");
		valledaosta = newImage("../im/valledaosta.gif");
		campania = newImage("../im/campania.gif");
		molise = newImage("../im/molise.gif");
		piemonte = newImage("../im/piemonte.gif");
		basilicata = newImage("../im/basilicata.gif");
		calabria = newImage("../im/calabria.gif");
		liguria = newImage("../im/liguria.gif");
		sicilia = newImage("../im/sicilia.gif");
		lombardia = newImage("../im/lombardia.gif");
		veneto = newImage("../im/veneto.gif");
		trentino_alto_adige = newImage("../im/trentino_alto_adige.gif");
		friuli_venezia_giulia = newImage("../im/friuli_venezia_giulia.gif");
		emilia_romagna = newImage("../im/emilia_romagna.gif");
		preloadFlag = true;
	}
}