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