function laad_kalender(){
	createXMLHttpRequest();
	xmlHttp.onreadystatechange=handleStateChange_laad_kalender;
	xmlHttp.open("GET","pages/kalender_code.php?action=overview",true);
	xmlHttp.send(null);

}

function handleStateChange_laad_kalender(){
	if(xmlHttp.readyState==0){
		document.getElementById('kalender').innerHTML="<img src='images/ajaxloader.gif'/>";	
	}
	
	if(xmlHttp.readyState==1){
		document.getElementById('kalender').innerHTML="<img src='images/ajaxloader.gif'/>";	
	}
	
	if(xmlHttp.readyState==2){
		document.getElementById('kalender').innerHTML="<img src='images/ajaxloader.gif'/>";	
	}
	
	if(xmlHttp.readyState==3){
		document.getElementById('kalender').innerHTML="<img src='images/ajaxloader.gif'/>";	
	}
	if(xmlHttp.readyState==4){
		if(xmlHttp.status==200){
			document.getElementById('kalender').innerHTML=xmlHttp.responseText;
			
			
		}
	}
}