var curImage=0;
var running = true;

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

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

function swapPicture() {
  if (!document.getElementsByTagName) return false;
  if (!document.getElementById) return false;
  if (!document.getElementById("showcase")) return false;
  var gallery = document.getElementById("showcase");
  var links = gallery.getElementsByTagName("a");
  if (running){
    showPic(links[curImage]);
  }  
  curImage++;
  if (curImage >= links.length) {
    curImage=0
  }
  setTimeout("swapPicture()", 10*1000);
}

setTimeout("swapPicture()", 50);
addLoadEvent(prepareGallery);