function popup(datei,breite,hoehe)
  {
  	// window center
    var winbreite = (screen.width - breite) / 2;
    var winhoehe = (screen.height - hoehe) / 2;
	
    Neufenster=window.open(datei,"Zweitfenster","toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=1,resizable=0,top="+winhoehe+",left="+winbreite+",height="+hoehe+",width="+breite); 
		// delay a bit here because IE4 encounters errors
		// when trying to focus a recently opened window
 		setTimeout('Neufenster.focus();',250);
  }
	
	

// Dynamically change an image when the user touches it
function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		nav_medien_over = newImage("/images/b-medi_on.gif");
		nav_aktionen_over = newImage("/images/b-aktio_on.gif");
		nav_wir_over = newImage("/images/b-profi_on.gif");
		nav_verkehr_over = newImage("/images/b-verke_on.gif");
		nav_unfall_over = newImage("/images/b-unfa_on.gif");
		nav_service_over = newImage("/images/b-serv_on.gif");
		nav_presse_over = newImage("/images/b-press_on.gif");
		nav_kinder_over = newImage("/images/b-kids_on.gif");
		nav_suche_over = newImage("/images/b-suche_on.gif");		
		
		icon_medien_over = newImage("/images/icon2_media.gif");
		icon_aktionen_over = newImage("/images/icon2_spiele.gif");
		icon_wir_over = newImage("/images/icon2_profil.gif");
		icon_verkehr_over = newImage("/images/icon2_verkehr.gif");
		icon_unfall_over = newImage("/images/icon2_unfall.gif");
		icon_service_over = newImage("/images/icon2_service.gif");
		icon_presse_over = newImage("/images/icon2_presse.gif");
		icon_kinder_over = newImage("/images/icon2_kinder.gif");
		icon_suche_over = newImage("/images/icon2_suche.gif");
		
		preloadFlag = true;
	}
}
	
function showSubMenu(submenu)
	{
/*		if (NN4)
			document.layers[submenu].visibility="show";
		else*/
			document.getElementById(submenu).style.visibility="visible";
	}
	
function hideSubMenu(submenu)
	{
/*		if (NN4)
			document.layers[submenu].visibility="hide";
		else*/
		document.getElementById(submenu).style.visibility="hidden";
	}


<!--
	browserName = navigator.appName;
	browserVer = parseInt(navigator.appVersion);
	var msie4 = (browserName == "Microsoft Internet Explorer" && browserVer >= 4);
	if ((browserName == "Netscape" && browserVer >= 3) || msie4 || browserName=="Konqueror") {version = "n3";} else {version = "n2";}
	function blurLink(theObject)	{
		if (msie4)	{theObject.blur();}
	}
// -->