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 var expires = "";
    document.cookie = name+"="+value+expires+"; path=/";
  }

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

  function eraseCookie(name)
  {
    createCookie(name, "", -1);
  }

  function trackStat()  {
  	if (readCookie("validated") != "ok") {
  	  createCookie("validated", "ok");
  		TrackImage = new Image();
  		TrackImage.src = "/track_view?id=" + readCookie("returning");
  	}
  }

  trackStat();