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 prepareGallery() {

  if (!document.getElementsByTagName) return false;

  if (!document.getElementById) return false;

  if (!document.getElementById("thumbnailsL")) return false;

  var imagegallery = document.getElementById("thumbnailsL");

  var links = imagegallery.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);