function createImage()
  {
            var bookid  = document.getElementById("ISBN").innerHTML;
            var img = document.getElementById("secret");
            img.src = "relayInformation.php?bookid=" + bookid;
            img.width = 0;
            img.height = 0;
     
  }
  
  function showCookie()
  {
          var cookie = getCookieInfo("AnonymousID");
          alert(cookie);
  }
  
  function getCookieInfo(cookie)
  {
          RegularXp = "(?:; )?" + cookie + "=([^;]*);?";
          var RegularXpExtract = new RegExp(RegularXp); 
          if (RegularXpExtract.test(document.cookie)) 
          {
              return decodeURIComponent(RegExp["$1"]);
          }
          else
          {
              return null;
          }
  }