function createCookie(name,value,days) {
	if (days) {
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	} else expires = "";
	document.cookie = name+"="+value+expires+"; path=/";
}

function readCookie(name) {
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0;i < ca.length;i++) {
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	}
	return null;
}

function getCookie(NameOfCookie) {
	if (document.cookie.length > 0) { 
		begin = document.cookie.indexOf(NameOfCookie+"="); 
		if (begin != -1) { 
			begin += NameOfCookie.length+1; 
			end = document.cookie.indexOf(";", begin);
			if (end == -1) end = document.cookie.length;
			return unescape(document.cookie.substring(begin, end));
		} 
	}
	return null; 
}

function delCookie (NameOfCookie) {
	if (getCookie(NameOfCookie)) {
		document.cookie = NameOfCookie + "=" +
			"; expires=Thu, 01-Jan-70 00:00:01 GMT";
	}
}

function retrieve(cookieName) {
	var cookie = readCookie(cookieName);
	return cookie;
}

function retrieveDefault(cookieName, defVal) {
	var cookie = retrieve(cookieName);
	var ret = cookie ? cookie : defVal;
	return ret;
}

function store() {
	for(var i=0;i < arguments.length;i=i+2) {	
		createCookie(arguments[i], arguments[i+1], 365);
	}
	alert('Impostazione predefinita salvata');
}
function clearStorage() {
	for(var i=0;i < arguments.length;i++) {	
		delCookie(arguments[i]);
	}
}