DocDomain = GetDomainName(document.URL);
RefDomain = GetDomainName(document.referrer);

if ( (DocDomain != RefDomain) && (RefDomain != "") ) {
	document.cookie = "eDreferrer=" + RefDomain + ";";
}

function GetDomainName(myUrl) {
	slash = '://';
	if (myUrl.lastIndexOf(slash) > -1) {
		myDomainName = myUrl.substring(myUrl.lastIndexOf(slash) + slash.length, myUrl.length);
	}
	slash = '/';
	if (myDomainName.indexOf(slash) < 0) {
		myDomainName = myDomainName + slash;
	}
	myDomainName = myDomainName.substring(0, myDomainName.indexOf(slash));
	return myDomainName.toLowerCase();
}

function GetReferrerDomain() {
	leftmark = "eDreferrer=";
	marklength = leftmark.length;
	cookieleft = document.cookie.indexOf(leftmark);
	if (cookieleft == -1) {
		return "";
	} else {
		cookieleft = cookieleft + marklength;
		cookieright = document.cookie.indexOf(";", cookieleft);
		if (cookieright == -1) {
			cookieright = document.cookie.length;
		}
		return document.cookie.substring(cookieleft,cookieright);
	}
}

function Provenienza() {
	if (document.Ordine.edisplay_Provenienza) {
		document.Ordine.edisplay_Provenienza.value = GetReferrerDomain();
	}
}