function toggleBigImg(anImg) {
  var children = anImg.parentNode.childNodes;
  for (var i = 0; i<children.length;i++) {
    if (children[i].className=='bigimg') {
      if (children[i].style.display == 'block') children[i].style.display = 'none';
      else if (children[i].style.display == 'none') children[i].style.display = 'block';
    }
  }
}

function showThis(aThing) {
  try {
    document.getElementById(aThing).style.display = 'block';
  } catch(e) {}
}
function hideThis(aThing) {
  try {
    document.getElementById(aThing).style.display = 'none';
  } catch(e) {}
}