// JavaScript Document
function jspopup(url) {
	var venster = window.open(url, 'nieuwVenster', 'toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=no,copyhistory=no,width=100,height=100,screenX=100,screenY=100,top=100,left=100');
	venster.focus();
}
function beeldcentreren() {  

  if (document.images[0]) {
    var breedte = screen.width;
    var hoogte = screen.height;
    var imgWidth = document.images[0].width+50;
    var imgHeight = document.images[0].height+150;
    var leftpos = breedte / 2 - imgWidth / 2;
    var toppos = hoogte / 2 - imgHeight / 2; 
    window.moveTo(leftpos, toppos);  
    window.resizeTo(imgWidth, imgHeight);
  }
  self.focus();
}