var closeButton = '';		
var intY = 450;
var intX = 600;
//
// getPageScroll()
// Returns array with x,y page scroll values.
// Core code from - quirksmode.org
//
function getPageScroll(){
	var yScroll;
	if (self.pageYOffset) {
		yScroll = self.pageYOffset;
	} else if (document.documentElement && document.documentElement.scrollTop){	 // Explorer 6 Strict
		yScroll = document.documentElement.scrollTop;
	} else if (document.body) {// all other Explorers
		yScroll = document.body.scrollTop;
	}
	arrayPageScroll = new Array('',yScroll) 
	return arrayPageScroll;
}
//
// getPageSize()
// Returns array with page width, height and window width, height
// Core code from - quirksmode.org
// Edit for Firefox by pHaez
//
function getPageSize(){
	
	var xScroll, yScroll;
	
	if (window.innerHeight && window.scrollMaxY) {	
		xScroll = document.body.scrollWidth;
		yScroll = window.innerHeight + window.scrollMaxY;
	} else if (document.body.scrollHeight > document.body.offsetHeight){ // all but Explorer Mac
		xScroll = document.body.scrollWidth;
		yScroll = document.body.scrollHeight;
	} else { // Explorer Mac...would also work in Explorer 6 Strict, Mozilla and Safari
		xScroll = document.body.offsetWidth;
		yScroll = document.body.offsetHeight;
	}
	
	var windowWidth, windowHeight;
	if (self.innerHeight) {	// all except Explorer
		windowWidth = self.innerWidth;
		windowHeight = self.innerHeight;
	} else if (document.documentElement && document.documentElement.clientHeight) { // Explorer 6 Strict Mode
		windowWidth = document.documentElement.clientWidth;
		windowHeight = document.documentElement.clientHeight;
	} else if (document.body) { // other Explorers
		windowWidth = document.body.clientWidth;
		windowHeight = document.body.clientHeight;
	}	
	
	// for small pages with total height less then height of the viewport
	if(yScroll < windowHeight){
		pageHeight = windowHeight;
	} else { 
		pageHeight = yScroll;
	}
	// for small pages with total width less then width of the viewport
	if(xScroll < windowWidth){	
		pageWidth = windowWidth;
	} else {
		pageWidth = xScroll;
	}
	arrayPageSize = new Array(pageWidth,pageHeight,windowWidth,windowHeight) 
	return arrayPageSize;
}
//
// pause(numberMillis)
// Pauses code execution for specified time. Uses busy code, not good.
// Code from http://www.faqts.com/knowledge_base/view.phtml/aid/1602
//
function pause(numberMillis) {
	var now = new Date();
	var exitTime = now.getTime() + numberMillis;
	while (true) {
		now = new Date();
		if (now.getTime() > exitTime)
			return;
	}
}
function showOnstuimigePopup(objLink)
{
	// prep objects
	var objOverlay = document.getElementById('overlay');
	var arrayPageSize = getPageSize();
	var arrayPageScroll = getPageScroll();
	// center loadingImage if it exists
	//if (objLoadingImage) {
	//	objLoadingImage.style.top = (arrayPageScroll[1] + ((arrayPageSize[3] - 35 - objLoadingImage.height) / 2) + 'px');
	//	objLoadingImage.style.left = (((arrayPageSize[0] - 20 - objLoadingImage.width) / 2) + 'px');
	//	objLoadingImage.style.display = 'block';
	//}
	// set height of Overlay to take up whole page and show
	objOverlay.style.height = (arrayPageSize[1] + 'px');
	objOverlay.style.display = 'block';
	var objOnstuimigePopup = null;
	
	if(objLink.getAttribute("rel") == "onstuimigeImagePopup"){
		objOnstuimigePopup = document.getElementById('onstuimigeImagePopup');
		var objImage = document.getElementById('onstuimigePopupImage');
		// preload image
		imgPreload = new Image();
		imgPreload.onload=function(){
			objImage.src = objLink.href;
	
			// center and make sure that the top and left values are not negative
			// and the image placed outside the viewport
			var intTop = arrayPageScroll[1] + ((arrayPageSize[3] - 35 - imgPreload.height) / 2);
			var intLeft = ((arrayPageSize[0] - 20 - imgPreload.width) / 2);
			
			objOnstuimigePopup.style.top = (intTop < 0) ? "0px" : intTop + "px";
			objOnstuimigePopup.style.left = (intLeft < 0) ? "0px" : intLeft + "px";
	
			//ie bug.		
			if (navigator.appVersion.indexOf("MSIE")!=-1){
				pause(250);
			}
			// Hide select boxes as they will 'peek' through the image in IE
			selects = document.getElementsByTagName("select");
		  for (i = 0; i != selects.length; i++) {
		          selects[i].style.visibility = "hidden";
		  }
		  objOnstuimigePopup.style.display = 'block';
		
			// After image is loaded, update the overlay height as the new image might have
			// increased the overall page height.
			arrayPageSize = getPageSize();
			objOverlay.style.height = (arrayPageSize[1] + 'px');
		
			// Check for 'x' keypress
			//listenKey();
		
			return false; 
		}
		imgPreload.src = objLink.href;
	}
	if(objLink.getAttribute("rel") == "onstuimigeTextPopup"){
		objOnstuimigePopup = document.getElementById('onstuimigeTextPopup');
		var objText = document.getElementById('onstuimigePopupText');
		var objBron = document.getElementById(objLink.getAttribute("id") + 'Text');
		objText.innerHTML = objBron.value;
		
		// center and make sure that the top and left values are not negative
		// and the image placed outside the viewport
		var intTop = arrayPageScroll[1] + ((arrayPageSize[3] - 35 - intY) / 2);
		var intLeft = ((arrayPageSize[0] - 20 - intX) / 2);
		
		objOnstuimigePopup.style.top = (intTop < 0) ? "0px" : intTop + "px";
		objOnstuimigePopup.style.left = (intLeft < 0) ? "0px" : intLeft + "px";
	
		//ie bug.		
		if (navigator.appVersion.indexOf("MSIE")!=-1){
			pause(250);
		}
		// Hide select boxes as they will 'peek' through the image in IE
		selects = document.getElementsByTagName("select");
	  for (i = 0; i != selects.length; i++) {
	          selects[i].style.visibility = "hidden";
	  }
	  element = document.getElementById("home_productscroller");
	  if(element){
	  	element.style.visibility = "hidden";
	  }
	  element = document.getElementById("header_home");
	  if(element){
	  	element.style.visibility = "hidden";
	  }
	  element = document.getElementById("flashbox");
	  if(element){
	  	element.style.visibility = "hidden";
	  }
	    
	  
		objOnstuimigePopup.style.display = 'block';
	
		// After image is loaded, update the overlay height as the new image might have
		// increased the overall page height.
		arrayPageSize = getPageSize();
		objOverlay.style.height = (arrayPageSize[1] + 'px');
	
		return false; 
	}	
	return false; 
}
function hideOnstuimigePopup()
{
	// get objects
	objOverlay = document.getElementById('overlay');
	objOnstuimigeImagePopup = document.getElementById('onstuimigeImagePopup');
	objOnstuimigeTextPopup = document.getElementById('onstuimigeTextPopup');
	// hide lightbox and overlay
	objOverlay.style.display = 'none';
	objOnstuimigeImagePopup.style.display = 'none';
	objOnstuimigeTextPopup.style.display = 'none';
	// make select boxes visible
	selects = document.getElementsByTagName("select");
    for (i = 0; i != selects.length; i++) {
		selects[i].style.visibility = "visible";
	}
	element = document.getElementById("home_productscroller");
  if(element){
  	element.style.visibility = "visible";
  }
  element = document.getElementById("header_home");
  if(element){
  	element.style.visibility = "visible";
  }
  element = document.getElementById("flashbox");
	  if(element){
	  	element.style.visibility = "visible";
	  }
	// disable keypress listener
	document.onkeypress = '';
}
//
// initLightbox()
// Function runs on window load, going through link tags looking for rel="lightbox".
// These links receive onclick events that enable the lightbox display for their targets.
// The function also inserts html markup at the top of the page which will be used as a
// container for the overlay pattern and the inline image.
//
function initOnstuimigePopup()
{
	if (!document.getElementsByTagName){ return; }
	var anchors = document.getElementsByTagName("a");
	// loop through all anchor tags
	for (var i=0; i<anchors.length; i++){
		var anchor = anchors[i];
		if (anchor.getAttribute("href") && (anchor.getAttribute("rel") == "onstuimigeImagePopup" || anchor.getAttribute("rel") == "onstuimigeTextPopup")){
			anchor.onclick = function () {showOnstuimigePopup(this); return false;}
		}
	}
	//alert('gevonden');
	// the rest of this code inserts html at the top of the page that looks like this:
	//
	// <div id="onstuimigePopup">
	//		<a href="#" onclick="hideOnstuimigePopup(); return false;">
	//			<img id="closeButton" />		
	//			<img id="onstuimigePopupImage" />
	//		</a>
	//		<div id="onstuimigePopupDetails">
	//			<div id="onstuimigePopupCaption"></div>
	//			<div id="keyboardMsg"></div>
	//		</div>
	// </div>
	
	var objBody = document.getElementsByTagName("body").item(0);
	
	// create overlay div and hardcode some functional styles (aesthetic styles are in CSS file)
	var objOverlay = document.createElement("div");
	objOverlay.setAttribute('id','overlay');
	objOverlay.onclick = function() {hideOnstuimigePopup(); return false;}
	objOverlay.style.display = 'none';
	objOverlay.style.position = 'absolute';
	objOverlay.style.top = '0';
	objOverlay.style.left = '0';
	objOverlay.style.zIndex = '90';
 	objOverlay.style.width = '100%';
	objBody.insertBefore(objOverlay, objBody.firstChild);
	
	var arrayPageSize = getPageSize();
	var arrayPageScroll = getPageScroll();
	//contentholder ImagePopup
	var objOnstuimigeImagePopup = document.createElement("div");
	objOnstuimigeImagePopup.setAttribute('id','onstuimigeImagePopup');
	objOnstuimigeImagePopup.style.display = 'none';
	objOnstuimigeImagePopup.style.position = 'absolute';
	objOnstuimigeImagePopup.style.zIndex = '100';	
	objOnstuimigeImagePopup.onclick = function() {hideOnstuimigePopup(); return false;}
	objBody.insertBefore(objOnstuimigeImagePopup, objOverlay.nextSibling);
		// sluiten link
		var objLink = document.createElement("a");
		objLink.setAttribute('href','javascript://');
		objLink.onclick = function () {hideOnstuimigePopup();}
		objOnstuimigeImagePopup.appendChild(objLink);
		//Afbeelding
		var objImage = document.createElement("img");
		objImage.onclick = function () {hideOnstuimigePopup(); }
		objImage.setAttribute('id','onstuimigePopupImage');
		objLink.appendChild(objImage);
	//contentholder TextPopup
	var objOnstuimigeTextPopup = document.createElement("div");
	objOnstuimigeTextPopup.setAttribute('id','onstuimigeTextPopup');
	objOnstuimigeTextPopup.style.display = 'none';
	objOnstuimigeTextPopup.style.position = 'absolute';
	objOnstuimigeTextPopup.style.zIndex = '100';	
	objOnstuimigeTextPopup.onclick = function() {hideOnstuimigePopup(); return false;}
	objBody.insertBefore(objOnstuimigeTextPopup, objOverlay.nextSibling);
	
	//text
	var objText = document.createElement("span");
	objText.setAttribute('id','onstuimigePopupText');
	objOnstuimigeTextPopup.appendChild(objText);
	
	// sluiten link
	var objLink = document.createElement("a");
	objLink.setAttribute('href','javascript://');
	objLink.onclick = function () {hideOnstuimigePopup();}
	objOnstuimigeTextPopup.appendChild(objLink);
	// preload and create close button image
	var imgPreloadCloseButton = new Image();
	// if close button image found, 
	imgPreloadCloseButton.onload=function(){
		var objCloseButton = document.createElement("img");
		objCloseButton.src = closeButton;
		objCloseButton.setAttribute('id','closeButton');
		objCloseButton.style.position = 'absolute';
		objCloseButton.style.zIndex = '200';
		objLink.appendChild(objCloseButton);
		return false;
	}
	imgPreloadCloseButton.src = closeButton;
	
}
addLoadEvent(initOnstuimigePopup);
function addLoadEvent(func)
{	
	var oldonload = window.onload;
	if (typeof window.onload != 'function'){
    	window.onload = func;
	} else {
		window.onload = function(){
		oldonload();
		func();
		}
	}
}