function addLoadEvent(func) {
  var oldonload = window.onload;
  if (typeof window.onload != 'function') {
	window.onload = func;
  } else {
	window.onload = function() {
	  oldonload();
	  func();
	}
  }
}
function insertAfter(newElement,targetElement) {
  var parent = targetElement.parentNode;
  if (parent.lastChild == targetElement) {
	parent.appendChild(newElement);
  } else {
	parent.insertBefore(newElement,targetElement.nextSibling);
  }
}

function addClass(element,value) {
  if (!element.className) {
	element.className = value;
  } else {
	newClassName = element.className;
	newClassName+= " ";
	newClassName+= value;
	element.className = newClassName;
  }
}
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 preparePlaceholder() {
  if (!document.createElement) return false;
  if (!document.createTextNode) return false;
  if (!document.getElementById) return false;
  if (!document.getElementById("imagegallery")) return false;

	var placeholder = document.createElement("img");
  placeholder.setAttribute("id","placeholder");
  placeholder.setAttribute("src","images/properties/property-1/lrg-01.jpg");
  placeholder.setAttribute("alt","my image gallery");

  /*
  var description = document.createElement("p");
  description.setAttribute("id","description");

  var desctext = document.createTextNode("Choose an image");
  description.appendChild(desctext);
	*/

  var gallery = document.getElementById("imagegallery");
	/*
  insertAfter(description,gallery);
  insertAfter(placeholder,description);
	*/
}

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);
	}
  }
}

addLoadEvent(preparePlaceholder);
addLoadEvent(prepareGallery);