var DHTML = (document.getElementById || document.all || document.layers);

var bgImage = new Array();    // Array voor de achtergronden die wisselen
var bgCurrent=0;              // Variable voro welkbackground actief is;
var bgMax=9;                  // Max backgrounds
bgImage[0]='bg01.jpg';
bgImage[1]='bg02.jpg';
bgImage[2]='bg03.jpg';
bgImage[3]='bg04.jpg';
bgImage[4]='bg05.jpg';
bgImage[5]='bg06.jpg';
bgImage[6]='bg07.jpg';
bgImage[7]='bg08.jpg';
bgImage[8]='bg09.jpg';
bgImage[9]='bg10.jpg';

if (DHTML)
{
   document.write("<style type='text/css'>");
   document.write("div#nav { visibility:hidden; }");
   document.write("</style>");
}
function getObj(name)
{
   if (document.getElementById)
   {
      this.obj = document.getElementById(name);
      this.style = document.getElementById(name).style;
   }
   else if (document.all)
   {
      this.obj = document.all[name];
      this.style = document.all[name].style;
   }
   else if (document.layers)
   {
      this.obj = document.layers[name];
      this.style = document.layers[name];
   }
}
function invi(obj,flag)
{
   if (!DHTML) return;
   var x = new getObj(obj);
   x.style.visibility = (flag) ? 'visible' : 'hidden';
}

function changeBgImg(imgSrc)
{
   if (!DHTML) return;
   var x = new getObj('bg_image');
   var imgUrl = 'images/' + imgSrc;
   x.obj.src = imgUrl;
}
function ScrollDiv(whereto)
{
   if (!DHTML) return;
   var x = new getObj(whereto);
   x.obj.scrollIntoView(true);
}
function RefreshPage(Language,LeftDiv,RightDiv){
  BackgroundChange(0);

  if (Language==0)
  {
    ajaxpage(LeftDiv,'menu');
    ajaxpage(RightDiv,'main');
  }
  else
  {
    LoadPage(Language);
  }
}
function LoadPage(PageLang){
  if (PageLang==1){
    ajaxpage('nav_n.html','nav_area');
    ajaxpage('leeg.html','menu');
    ajaxpage('home_n.html','main');
  }
  else {
    ajaxpage('nav_e.html', 'nav_area');
    ajaxpage('leeg.html','menu');
    ajaxpage('home_e.html','main');
  }
}
function BackgroundChange(Test){
  bgCurrent++;
  if (bgCurrent > bgMax){bgCurrent=0;}
  if (!DHTML) return;
  var x = new getObj('navBody');
  var imgUrl = 'url(images/' + bgImage[bgCurrent] + ')'
  x.style.backgroundImage = imgUrl;
}
/***********************************************
* Dynamic Ajax Content- © Dynamic Drive DHTML code library (www.dynamicdrive.com)
* This notice MUST stay intact for legal use
* Visit Dynamic Drive at http://www.dynamicdrive.com/ for full source code
***********************************************/

function ajaxpage(url, containerid){
  var page_request = false
  if (window.XMLHttpRequest) // if Mozilla, Safari etc
    page_request = new XMLHttpRequest()
  else if (window.ActiveXObject){ // if IE
    try {
      page_request = new ActiveXObject("Msxml2.XMLHTTP")
    }
  catch (e){
    try{
      page_request = new ActiveXObject("Microsoft.XMLHTTP")
    }
    catch (e){}
    }
  }
  else
    return false
  page_request.onreadystatechange=function(){
    loadpage(page_request, containerid)
  }
  if ((url=='hoofd_nr.html') || (url=='hoofd_nl.html') || (url=='hoofd_er.html') || (url=='hoofd_el.html') || (url=='neven_er.html')|| (url=='neven_nr.html')|| (url=='amb2005_e.html') || (url=='amb2005_n.html')) {page_request.open('POST', url, true);}
  else {page_request.open('POST', url, true);}
  page_request.send(null);
}

function loadpage(page_request, containerid){
  if (page_request.readyState == 4 && (page_request.status==200 || window.location.href.indexOf("http")==-1))
  document.getElementById(containerid).innerHTML=page_request.responseText
}