if (document.getElementById){
document.write('<style type="text/css">\n')
document.write('.submenu{display: none;}\n')
document.write('</style>\n')
}

function SwitchMenu(obj){
	if(document.getElementById){
	var el = document.getElementById(obj);
	var ar = document.getElementById("masterdiv").getElementsByTagName("span");
		if(el.style.display != "block"){
			for (var i=0; i<ar.length; i++){
				if (ar[i].className=="submenu")
				ar[i].style.display = "none";
			}
			el.style.display = "block";
		}else{
			el.style.display = "none";
		}
	}
}

<!-- Roll
function filter(imagename,objectsrc){
if (document.images)
document.images[imagename].src=eval(objectsrc+".src")
}
home=new Image(50,50)
home.src="images/MenuHomeBianco.gif"
homex=new Image(50,50)
homex.src="images/MenuHomeGiallo.gif"

Azienda=new Image(50,50)
Azienda.src="images/MenuAziendaBianco.gif"
Aziendax=new Image(50,50)
Aziendax.src="images/MenuAziendaGiallo.gif"

Prodotti=new Image(50,50)
Prodotti.src="images/MenuProdottiBianco.gif"
Prodottix=new Image(50,50)
Prodottix.src="images/MenuProdottiGiallo.gif"

TroppoBuoni=new Image(50,50)
TroppoBuoni.src="images/MenuTroppoBuoniMarrone.gif"
TroppoBuonix=new Image(50,50)
TroppoBuonix.src="images/MenuTroppoBuoniGiallo.gif"

TroppoBuoniA=new Image(50,50)
TroppoBuoniA.src="images/MenuTroppoBuoniAzzurro.gif"
TroppoBuoniAx=new Image(50,50)
TroppoBuoniAx.src="images/MenuTroppoBuoniArancio.gif"

specialita=new Image(50,50)
specialita.src="images/MenuLeSpecialitaMarrone.gif"
specialitax=new Image(50,50)
specialitax.src="images/MenuLeSpecialitaGiallo.gif"

specialitaA=new Image(50,50)
specialitaA.src="images/MenuLeSpecialitaAzzurro.gif"
specialitaAx=new Image(50,50)
specialitaAx.src="images/MenuLeSpecialitaArancio.gif"

Crostolo=new Image(50,50)
Crostolo.src="images/MenuCrostoloMarrone.gif"
Crostolox=new Image(50,50)
Crostolox.src="images/MenuCrostoloGiallo.gif"

CrostoloA=new Image(50,50)
CrostoloA.src="images/MenuCrostoloAzzurro.gif"
CrostoloAx=new Image(50,50)
CrostoloAx.src="images/MenuCrostoloArancio.gif"

DoveSiamo=new Image(50,50)
DoveSiamo.src="images/MenuDoveSiamoBianco.gif"
DoveSiamox=new Image(50,50)
DoveSiamox.src="images/MenuDoveSiamoGiallo.gif"

Contatti=new Image(50,50)
Contatti.src="images/MenuContattiBianco.gif"
Contattix=new Image(50,50)
Contattix.src="images/MenuContattiGiallo.gif"

Links=new Image(50,50)
Links.src="images/MenuLinksBianco.gif"
Linksx=new Image(50,50)
Linksx.src="images/MenuLinksGiallo.gif"

Intro=new Image(50,50)
Intro.src="images/MenuIntroBianco.gif"
Introx=new Image(50,50)
Introx.src="images/MenuIntroGiallo.gif"

//-->