text: function getSessionToken(){
      return sessionStorage.getItem('s2sAccessToken');
  }
  
  function setSessionToken(accessToken){
      sessionStorage.setItem('s2sAccessToken', accessToken);
  }
  
  function isAuthorized(){
      return sessionStorage.getItem('s2sAccessToken') ? true : false;
  }
  
  function logout(){
      sessionStorage.removeItem('s2sAccessToken');
      window.location.reload();
  }