// http://sonspring.com/journal/dom-gallery
// based on Jeremy Keith's DOM Scripting book samples

function showPic(whichpic) {
  if (!document.getElementById("placeholder")) return true;
  var source = whichpic.getAttribute("href");
  var placeholder = document.getElementById("placeholder");
  placeholder.setAttribute("src",source);
// this bit chokes IE :(
//  if (!document.getElementById("description")) return false;
//  if (whichpic.getAttribute("title")) {
//   var text = whichpic.getAttribute("title");
//  } else {
//    var text = "";
//  }
//  var description = document.getElementById("description");
//  if (description.firstChild.nodeType == 3) {
//    description.firstChild.nodeValue = text;
//  }
  return false;
}

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

function addLoadEvent(func) {
  var oldonload = window.onload;
  if (typeof window.onload != 'function') {
    window.onload = func;
  } else {
    window.onload = function() {
      oldonload();
      func();
    }
  }
}

addLoadEvent(prepareGallery);