div.rightnav
  {
  position: fixed;
  right: 0px;
  width: 100px;
  }
div.leftnav
  {
  position: fixed;
  left: 0px;
  width: 100px;
  }
div#fixleft
  {
  position: fixed;
  left: 0px;
  width: 100px;
  }
div#fixright
  {
  position: fixed;
  right: 0px;
  width: 100px;
  }