Ebene1 = 0;
Ebene2 = 0;
	
aktiveEbene = "e_dummy" ;
aktiveUnterebene = "e_dummy";

Ebenen = new Array("","e_navi1","e_navi2","e_navi3","e_navi4","e_navi5","e_navi6","e_navi7","e_navi8");



function getLayerRef ( /* String */ id, 
                       /* optional HTML-Object */ document) {
  if (!document)
    document = window.document;


  if (document.layers) {
    for (var l = 0; l < document.layers.length; l++)
      if (document.layers[l].id == id)
        return document.layers[l];
    for (var l = 0; l < document.layers.length; l++) {
      var result = getLayerRef(id, document.layers[l].document);
      if (result)
        return result;
    }
    return null;
  } else if (document.all) {
    return document.all[id];
  } else if (document.getElementById) {
    return document.getElementById(id);
  }
}

function setVisibility( /* Layer */ objLayer, 
                        /* boolean */ visible ) {

  if(document.layers){
    objLayer.visibility  = 
        (visible == true) ? 'show' : 'hide';
  } else {
  if (objLayer != ""){
    objLayer.style.visibility = 
        (visible == true) ? 'visible' : 'hidden';}
  }
}





function mmenuOn(i){
	name = "e_navi"+String(i)+'0';
	setVisibility( getLayerRef( aktiveEbene ), false);
	setVisibility( getLayerRef( name ), true);
	aktiveEbene = name;
	submenuOff();
}

function menuOn(i,ii){
	name = "e_navi"+String(i)+String(ii);
	setVisibility( getLayerRef( aktiveUnterebene ), false);
	setVisibility( getLayerRef( name ), true);
	aktiveUnterebene = name;
	return true;
}


function menuOff(){
	submenuOff();
	setVisibility( getLayerRef( aktiveEbene), false);
	return true;
}

function submenuOff(){
	setVisibility( getLayerRef( aktiveUnterebene), false);
}

function startup(){
		return true;
}