var validez = 1;
var caduca = new Date();
caduca.setTime(caduca.getTime() + (validez*24*60*60*1000));

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

function setCookie(name, value, expires, path, domain, secure) {
  document.cookie = name + "=" + escape(value) +
  ((expires == null) ? "" : "; expires=" + expires.toGMTString()) +
  ((path == null) ? "" : "; path=" + path) +
  ((domain == null) ? "" : "; domain=" + domain) +
  ((secure == null) ? "" : "; secure");
}

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

function Bienvenido(info) {
	//Quién eres?
	var Visitante = getCookie('Visitante')
	if (Visitante == null) {
		Visitante = info
		setCookie ('Visitante', Visitante, caduca);
	}
	return Visitante;
}

function cambiaNombre() {
	var validez = 30;
	var caduca = new Date();
	caduca.setTime(caduca.getTime() + (validez*24*60*60*1000));
	var Visitante = prompt("¿Puedes darme tu nombre?", "Nadie");
	setCookie ('Visitante', Visitante, caduca);
}
/*
var cookie  = Cookie.write('handle', 'SoccerStar23', {duration: 30, domain: '.davidwalsh.name'}); //save for a month

var cookie  = Cookie.write('handle', 'SoccerStar23', {duration: 1, secure: true}); //save for a month

var handle = Cookie.read('handle');

if(logoff) { Cookie.dispose('handle'); }
*/