https://www.kranten.com/javascript/content_switch.js

1/***********************************************
2* Dynamic Ajax Content- © Dynamic Drive DHTML code library (www.dynamicdrive.com)
3* This notice MUST stay intact for legal use
4* Visit Dynamic Drive at http://www.dynamicdrive.com/ for full source code
5***********************************************/
6
7var loadedobjects=""
8var rootdomain="http://"+window.location.hostname
9
10function krantensub(url, containerid){
11var page_request = false
12if (window.XMLHttpRequest) // if Mozilla, Safari etc
13page_request = new XMLHttpRequest()
14else if (window.ActiveXObject){ // if IE
15try {
16page_request = new ActiveXObject("Msxml2.XMLHTTP")
17} 
18catch (e){
19try{
20page_request = new ActiveXObject("Microsoft.XMLHTTP")
21}
22catch (e){}
23}
24}
25else
26return false
27page_request.onreadystatechange=function(){
28loadpage(page_request, containerid)
29}
30page_request.open('GET', url, true)
31page_request.send(null)
32}
33
34function loadpage(page_request, containerid){
35if (page_request.readyState == 4 && (page_request.status==200 || window.location.href.indexOf("http")==-1))
36document.getElementById(containerid).innerHTML=page_request.responseText
37}
38
39function loadobjs(){
40if (!document.getElementById)
41return
42for (i=0; i<arguments.length; i++){
43var file=arguments[i]
44var fileref=""
45if (loadedobjects.indexOf(file)==-1){ //Check to see if this object has not already been added to page before proceeding
46if (file.indexOf(".js")!=-1){ //If object is a js file
47fileref=document.createElement('script')
48fileref.setAttribute("type","text/javascript");
49fileref.setAttribute("src", file);
50}
51else if (file.indexOf(".css")!=-1){ //If object is a css file
52fileref=document.createElement("link")
53fileref.setAttribute("rel", "stylesheet");
54fileref.setAttribute("type", "text/css");
55fileref.setAttribute("href", file);
56}
57}
58if (fileref!=""){
59document.getElementsByTagName("head").item(0).appendChild(fileref)
60loadedobjects+=file+" " //Remember this object as being already added to page
61}
62}
63}