<!--
  IE = navigator.appName=="Microsoft Internet Explorer";
  NS = navigator.appName=="Netscape";
  bVer = parseInt(navigator.appVersion);
  var nieuweWin=null;
  // Colofon, Disclaimer
  function pup(url, name, width, height) {
    var _params = "width="+width+",height="+height+",resizable=no,status=no,scrollbars=0";

    if (bVer >= 4) {
           _left = ( (screen.width-width) >>1 );
           _top = ( (screen.height-height) >>1 );
    } else {
           _left = ( (800-width) >>1 );
           _top = ( (600-height) >>1 );
    }

    if (IE) _params += ",top=" + _top + ",left=" + _left;
    else if (NS) _params += ",screenX=" + _left + ",screenY=" + _top;

    nieuweWin = window.open(url, name, _params);
    nieuweWin.focus();
  }
//-->