var site =  window.location.host + "/aptive/t/bt/d";

function getProtocol() {
  var url = document.URL + "";
  return url.substring(0, url.indexOf(":") + 1);
}

function doUrl() {
  var url = document.URL;
  return getProtocol() + '//' + site + '?u=' + escape(url) + '&r=' + escape(document.referrer);
}

function logInfo() {
  var img = new Image();
  img.src = doUrl();
}

logInfo();