// JavaScript Document

window.onload = function () {
  var mainImage, thumbnails;
  var handler = function(url){
	  return function (e) {
	  	mainImage.src = url.replace();
	  };
  };
  
  var obj = document.getElementById('main-image');
  if (obj) mainImage = obj.getElementsByTagName('img');
  if (mainImage) mainImage = mainImage[0];
  
  obj = document.getElementById('thumbnails');
  if (obj) thumbnails = obj.getElementsByTagName('img');
  var localImg, url;
  for (var i = 0; i < thumbnails.length; i += 1) {
	  url = thumbnails[i].src.replace("/thumbnails/", "/");
	  localImg = new Image();
	  localImg.src = url;
	  
	  thumbnails[i].onclick = handler(url);
  }

};