function GetXmlHttpObject(handler)  { 
  var objXmlHttp=null
  if (navigator.userAgent.indexOf("Opera")>=0)  {
    alert("This example doesn't work in Opera");
    return;
  }
  if (navigator.userAgent.indexOf("MSIE")>=0)  { 
    var strName="Msxml2.XMLHTTP"
    if (navigator.appVersion.indexOf("MSIE 5.5")>=0)  {
      strName="Microsoft.XMLHTTP";
    } 
    try  { 
      objXmlHttp=new ActiveXObject(strName);
      objXmlHttp.onreadystatechange=handler;
      return objXmlHttp;
    } 
    catch(e) { 
      alert("Error. Scripting for ActiveX might be disabled");
      return;
    } 
  } 
  if (navigator.userAgent.indexOf("Mozilla")>=0)  {
    objXmlHttp=new XMLHttpRequest();
    objXmlHttp.onload=handler;
    objXmlHttp.onerror=handler;
    return objXmlHttp;
  }
} 

function stateChanged()  { 
if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")  { 
  try {
    var element = document.getElementById(strElementId)
    element.innerHTML=xmlHttp.responseText;
  }
  catch(e) {
    alert("error has occurred: " + strElementId + "  " + e.description);
    }
  }
} 
function setWindowSize() {
  var myWidth = 0, myHeight = 0;
  if( typeof( window.innerWidth ) == 'number' ) {
    //Non-IE
    myWidth = window.innerWidth;
    myHeight = window.innerHeight;
  } else if( document.documentElement && ( document.documentElement.clientWidth || document.documentElement.clientHeight ) ) {
    //IE 6+ in 'standards compliant mode'
    myWidth = document.documentElement.clientWidth;
    myHeight = document.documentElement.clientHeight;
  } else if( document.body && ( document.body.clientWidth || document.body.clientHeight ) ) {
    //IE 4 compatible
    myWidth = document.body.clientWidth;
    myHeight = document.body.clientHeight;
  }
  myHeight = myHeight + 1;
  //window.alert( 'Width = ' + myWidth );
  //window.alert( 'Height = ' + myHeight );
  document.getElementById("body").style.minHeight=myHeight + "px";
  //alert(document.getElementById("body").style.minHeight);
}

var xmlHttp

function getcontent(page,deel,item)  {
  strElementId="content" 
//  setCookie('prevpage',getCookie('page'),2);
//  setCookie('prevdeel',getCookie('deel'),2);
//  setCookie('page',page,2);
//  setCookie('deel',deel,2);
//  setCookie('item',item,2);
  var url="includes/" + page + "/" + deel + ".php?item=" + item
  xmlHttp=GetXmlHttpObject(stateChanged)
  xmlHttp.open("GET", url , true)
  xmlHttp.send(null)
//  var strleader
//  strleader= '&laquo;&nbsp;<a title="' + getCookie('prevpage') + '&nbsp;&raquo;&nbsp;' + getCookie('prevdeel') + '" href="javascript:void(0)" onclick="javascript:alert(document.cookie);getcontent(\'' + getCookie('prevpage') + '\',\'' + getCookie('prevdeel') + '\');">vorige pagina</a>&nbsp;&laquo;'
//  document.getElementById('lbottom').innerHTML=strleader
}

function getnews(item,src)  {
  strElementId="news" 
  var url="includes/over/nieuws.php?item=" + item + "&src=" + src
  xmlHttp=GetXmlHttpObject(stateChanged)
  xmlHttp.open("GET", url , true)
  xmlHttp.send(null)
}

//funcie zoals gedefinieerd op www.w3schools.com
function setCookie(c_name,value,expiredays) {
  var exdate=new Date()
  exdate.setDate(exdate.getDate()+expiredays)
  document.cookie=c_name+ "=" +escape(value)+
  ((expiredays==null) ? "" : ";expires="+exdate.toGMTString())
}

function getCookie(c_name)
{
if (document.cookie.length>0)
  {
  c_start=document.cookie.indexOf(c_name + "=")
  if (c_start!=-1)
    {
    c_start=c_start + c_name.length+1
    c_end=document.cookie.indexOf(";",c_start)
    if (c_end==-1) c_end=document.cookie.length
    return unescape(document.cookie.substring(c_start,c_end))
    }
  }
return ""
}
function delCookie(name){
 expires = new Date(1970,1,1);
 expires = expires.toGMTString();
 deCookie = name
 deCookie += "=delete; expires=";
 deCookie += expires;
 document.cookie = deCookie;
}