text: //File: Name
  //
  //About: License
  //
  //Copyright (C)2021 Paul W. Lane <kc9eye@gmail.com>
  //
  //This program is free software; you can redistribute it and/or modify
  //
  //it under the terms of the GNU General Public License as published by
  //
  //the Free Software Foundation; version 2 of the License.
  //
  //This program is distributed in the hope that it will be useful,
  //
  //but WITHOUT ANY WARRANTY; without even the implied warranty of
  //
  //MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  //
  //GNU General Public License for more details.
  //
  //You should have received a copy of the GNU General Public License along
  //
  //with this program; if not, write to the Free Software Foundation, Inc.
  //
  //51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  document.addEventListener("DOMContentLoaded",function(e){
      var scrollPos = window.sessionStorage.getItem('scroll');
      if (scrollPos) window.scrollTo(0,scrollPos);
      sessionStorage.clear();
  });
  
  window.onbeforeunload = function(e){
      sessionStorage.setItem('scroll',window.scrollY)
  ;}