function larghezzaMonitor() {

BrowserWidth=document.all?document.body.clientWidth:window.innerWidth;

leftPosition=BrowserWidth/2;

letOffset = "20";

document.getElementById("storia").style.visibility = "visible";
document.getElementById("materna").style.visibility = "visible";
document.getElementById("elementare").style.visibility = "visible";
document.getElementById("staff").style.visibility = "visible";
document.getElementById("contatta").style.visibility = "visible";
document.getElementById("logo").style.visibility = "visible";

	if (BrowserWidth>900) {
		document.getElementById("storia").style.left=leftPosition-173;
		document.getElementById("materna").style.left=leftPosition-60;
		document.getElementById("elementare").style.left=leftPosition+53;
		document.getElementById("staff").style.left=leftPosition+165;
		document.getElementById("contatta").style.left=leftPosition+274;
		document.getElementById("logo").style.left=leftPosition-420;
	} else {
		document.getElementById("storia").style.left=leftPosition-letOffset-173;
		document.getElementById("materna").style.left=leftPosition-letOffset-60;
		document.getElementById("elementare").style.left=leftPosition-letOffset+53;
		document.getElementById("staff").style.left=leftPosition-letOffset+165;
		document.getElementById("contatta").style.left=leftPosition-letOffset+274;
		document.getElementById("logo").style.left=leftPosition-letOffset-420;
	}

}