function imgswap2(imgName) {
  try {
  document.images[imgName].src = '/images/' + imgName + '-2.jpg';
  }
catch (error) { }
}

function imgswap1(imgName) {
  try{
    document.images[imgName].src = '/images/' + imgName + '-1.jpg';
  }
  catch (error){}
}

function showMenu(elmnt) {
  document.getElementById(elmnt).style.visibility = 'visible';
}
function hideMenu(elmnt) {
  document.getElementById(elmnt).style.visibility = 'hidden';
}