function showPic(whichpic) {
 
 if (!document.getElementById("placeholder")) return true;
  var source = whichpic.getAttribute("href");
  
  var placeholder = document.getElementById("placeholder");
  placeholder.setAttribute("src",source);
  
  if (whichpic.getAttribute("title")) {
    var text = whichpic.getAttribute("title");
  } else {
    var text = "";
  }
  return false;
}


function prepareGallery() {
  if (!document.getElementsByTagName) return false;
  if (!document.getElementById) return false;
  if (!document.getElementById("prodGallery")) return false;
  var gallery = document.getElementById("prodGallery");
  var links = gallery.getElementsByTagName("a");
  for ( var i=0; i < links.length; i++) {
    links[i].onclick = function() {
      return showPic(this);
    }
  }
}


addLoadEvent(prepareGallery);