function showPic (objectId) {
 if (document.getElementById) {

  if(window.currentlyActive) {
	window.currentlyActive.className = '';
  } else {
    document.getElementById('link1').className = '';
  }

  document.getElementById('placeholder').src = objectId.href;
  objectId.className = 'active';
  window.currentlyActive = objectId;
  return false;
 } else {
  return true;
 }
}