https://www.nifty.com/js/ad/pubmatic2.js

1(function () {
2  var purl = window.location.href;
3  var url = '//ads.pubmatic.com/AdServer/js/pwt/158115/2581';
4  var profileVersionId = '';
5  if (purl.indexOf('pwtv=') > 0) {
6    var regexp = /pwtv=(.*?)(&|$)/g;
7    var matches = regexp.exec(purl);
8    if (matches.length >= 2 && matches[1].length > 0) {
9      profileVersionId = '/' + matches[1];
10    }
11  }
12  var wtads = document.createElement('script');
13  wtads.async = true;
14  wtads.type = 'text/javascript';
15  wtads.src = url + profileVersionId + '/pwt.js';
16  var node = document.getElementsByTagName('script')[0];
17  node.parentNode.insertBefore(wtads, node);
18})();