function VensterHoogte()
{
 if (self.innerHeight) return self.innerHeight;
 else if (document.body && document.body.clientHeight) return document.body.clientHeight;
 else return 0;
}
function f_clientWidth() {
	return f_filterResults (
		window.innerWidth ? window.innerWidth : 0,
		document.documentElement ? document.documentElement.clientWidth : 0,
		document.body ? document.body.clientWidth : 0
	);
}

function f_clientHeight() {
	return f_filterResults (
		window.innerHeight ? window.innerHeight : 0,
		document.documentElement ? document.documentElement.clientHeight : 0,
		document.body ? document.body.clientHeight : 0
	);
}

function f_filterResults(n_win, n_docel, n_body) {
	var n_result = n_win ? n_win : 0;
	if (n_docel && (!n_result || (n_result > n_docel)))
		n_result = n_docel;
	return n_body && (!n_result || (n_result > n_body)) ? n_body : n_result;
}

function FitToHeight()
{
  myWindowHeight=VensterHoogte();

  if(document.layers) {
    currentPos=myWindowHeight-document.hoofdtabel.offsetHeight;
	document.fillerup.style.height=currentPos;
  } else if (document.all) {
    if (!window.opera) {
      document.all.fillerup.style.height=0;
      currentPos=myWindowHeight-document.all.hoofdtabel.offsetHeight;
	  if (currentPos >= 0) { document.all.fillerup.style.height=currentPos; }
    } else {
      document.all.fillerup.style.height=0;
      currentPos=myWindowHeight-document.all.hoofdtabel.offsetHeight;
	  if (currentPos >= 0) { document.all.fillerup.style.height=currentPos; }
	}
  } else if (document.getElementById) {
	  document.getElementById('fillerup').style.height=0;
      currentPos=myWindowHeight-document.getElementById('hoofdtabel').offsetHeight;
	  if (currentPos >= 0) { document.getElementById('fillerup').style.height=currentPos; }
  }
}