function initAjaxRequest() {
 
 var request;
 
 if (window.ActiveXObject) {
  request = new ActiveXObject("Microsoft.XMLHTTP");
 } else {
  request = new XMLHttpRequest();
 }
 
 return request;

}

function sendAjaxGetRequest(url, container) {
	
 ajaxRequest = initAjaxRequest();
	
 var rand = Math.random();
	
 ajaxRequest.open('GET', ''+url+'&rand='+rand+'');
 ajaxRequest.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
 ajaxRequest.onreadystatechange = function() {
 
 if (ajaxRequest.readyState == 4) {
  var gegevens = ajaxRequest.responseText;
  var woord = gegevens.split(":");
  document.getElementById('adres1').value = woord[0];
  document.getElementById('plaats').value = woord[1];
 }
 
 }
 
 ajaxRequest.send(null);

}

function ShowSearchPreview(fieldname){

 var string = document.getElementById(fieldname).value;
 string = string.replace(" ", "");
 document.getElementById(fieldname).value = string;
 if(string.length == 6) {
	sendAjaxGetRequest('templates/content/postcode.php?postcode='+string+'');
 }
}