document.write('<div id="BannerChangeAdContent_3260568832053851208"></div>');
(function() 
  {                                                     
        showAdBox();
        setInterval(showAdBox, 20000)})();
  
  function showAdBox()
  {
        var element = document.getElementById('js_BannerChangeAdContent_3260568832053851208');
        if(element)
        {
           element.parentNode.removeChild(element); 
        }
              
        var sc = document.createElement('script');
        sc.src = 'https://www.bannerchange.net/showadbox_html.php?u=webvz&id=2504&ContentId=BannerChangeAdContent_3260568832053851208';
        sc.setAttribute('async', 'true');
        sc.setAttribute('id', 'js_BannerChangeAdContent_3260568832053851208');
        document.documentElement.firstChild.appendChild(sc);
  }