Regex = new RegExp(/^(?:http|https):\/\/localhost\:?[0-9]*\//);
      var mailtoRegex = new RegExp(/^mailto:/);
        var filterRegex = new RegExp("^(?:http:|https:)\/\/drganghe\.github\.io\/custom");
      var isInternal = (href) => {
          return filterRegex.test(href) || localhostRegex.test(href) || mailtoRegex.test(href);
      }
      // Inspect non-navigation links and adorn them if external
     var links = window.document.querySelectorAll('a[href]:not(.nav-link):not(.navbar-brand):not(.toc-act