function HHCE_popup(URL,width,height) {

  // determine defaults for unspecified arguments
  if (!HHCE_popup.arguments[1]) {
    width = 275;
  }
  if (!HHCE_popup.arguments[2]) {
    height = 350;
  }

  // open a popup window and center it on the screen
  var handle    = null;
  var scrx      = (screen.width - width)/2;
  var scry      = (screen.height - height)/2;

  var winoptions = "height=" + height + ",width=" + width;

  // Windows Explorer
  if (navigator.appName.indexOf("Explorer") >= 0) {
    winoptions    += ",left=" + scrx + ",top=" + scry;
  } else {
    winoptions    += ",screenX=" + scrx + ",screenY=" + scry;
  }

  winhandle = window.open(URL,"popup",winoptions);

}

// delay closing of window
function HHCE_delayclose(millisecs) {
  timer=setTimeout("window.close()",millisecs);
}

// change language
function HHCE_lang(curLang) {
// var newURL = "../../";
var newURL = "/";

  with (document.forms[0]) {
    var newLang = elements[0].options[elements[0].selectedIndex].value;
  }

  window.location = newURL + newLang + "/index.php";
}

// print screen
function HHCE_printframe(frame) {

  frame.focus();

  if (window.print) {
    frame.print();
  } else {
    alert("Klik in de gewenste tekst en druk op CTRL+P");
  }

}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}