function showFlash01() {
  var elmt = document.getElementById("bannerRight");
if (elmt) elmt.style.visibility = 'visible';
}

function hideFlash01() {
   var elmt = document.getElementById("bannerRight");
if (elmt) elmt.style.visibility = 'hidden';
}

function showFlash02() {
  var elmt = document.getElementById("bannerLeft");
if (elmt) elmt.style.visibility = 'visible';
}

function hideFlash02() {
   var elmt = document.getElementById("bannerLeft");
if (elmt) elmt.style.visibility = 'hidden';
}