var lOn,lOff;

function showj(nm) {
  obj1 = getLayer(nm+'0');
  obj2 = getLayer(nm+'1');
  if (obj1 != null && obj2 != null) {
    if ( obj2.style.visibility == lOff ) {
      obj2.left = obj1.offsetLeft;
      obj2.width = obj1.offsetWidth;
      obj2.top = obj1.offsetTop;
      obj1.style.visibility = lOff;
      obj2.style.visibility = lOn;
    } else {
      obj2.style.visibility = lOff;
      obj1.style.visibility = lOn;
    }
  }
}

function getLayer(obj)
{
  // Netscape 4
  if (document.layers) {
    lOn = "show"; lOff = "hide";
    return( document.layers[obj] );
  }
  // Netscape 6 & IE 5
  lOn = "visible"; lOff = "hidden";
  if (document.getElementById) {
    oo = document.getElementById(obj);
  } else { // IE 4
    oo = document.all[obj];
  }

  return(oo);
}