function changeNavi(firstLevel,secLevel) {

  preload(firstLevel);
// austauschen der Bilder der Hauptnavigation und des Logos
  document.logo.src = "../../images/" + firstLevel + "/PB_logo.png";
  document.kontakt.src = "../../images/" + firstLevel + "/kontakt.png";
  document.benvenuto.src = eval( "benvenutoup.src" );
  document.aktuell.src = eval( "aktuellup.src" );
  document.seminare.src = eval( "seminareup.src" );
  document.sprache.src = eval( "spracheup.src" );
  document.profile.src = eval( "profileup.src" );
  document.line.src = "../../images/" + firstLevel + "/line.gif";
  document.line1.src = "../../images/" + firstLevel + "/line.gif";
  document.line2.src = "../../images/" + firstLevel + "/line.gif";
  document.line3.src = "../../images/" + firstLevel + "/line.gif";
  document.line4.src = "../../images/" + firstLevel + "/line.gif";
  document.line5.src = "../../images/" + firstLevel + "/line.gif";
  document.line6.src = "../../images/" + firstLevel + "/line.gif";
  document.line8.src = "../../images/" + firstLevel + "/line.gif";
  document.line9.src = "../../images/" + firstLevel + "/line.gif";

// Setzen des "down" Status der primärnavigation  
  if(firstLevel != "home") document[ firstLevel ].src = "../../images/" + firstLevel + "/" + firstLevel + "_down.png";
// austauschen des Bildes der Sekundärnavigation wenn erwünscht

  
    if(ns4) {
	
	arrLayer = new Array("Div_benvenuto","Div_aktuell","Div_seminare","Div_sprache","Div_profile");
  
    for (var i=0; i < arrLayer.length; ++i) {
	  
        nr=0;
        while (document[arrLayer[i]].document.images[nr]) {
	
	      if(document[arrLayer[i]].document.images[nr].src.search("bullet_down")!=-1) {
	        document[arrLayer[i]].document.images[nr].src = "../../images/bullet.gif";
	      }
	  
	      nr++;
        } 	
	    if(secLevel){
	      document["Div_" + firstLevel].document[ secLevel ].src = "../../images/bullet_down.gif";
		}
	  }
	}

	else {  
      nr=0;
      while (document.images[nr]) {
	
	    if(document.images[nr].src.search("bullet_down")!=-1) {
	      document.images[nr].src = "../../images/bullet.gif";
	    }
	  
	    nr++;
      } 
	  if(secLevel){
	    document[ secLevel ].src = "../../images/bullet_down.gif";
	  }
    }
	

// ändern der Hintergrundfarbe

  switch(firstLevel) {
   case "benvenuto":
     document.bgColor ="#E3E092";
   break;
 
 case "sprache":
     document.bgColor ="#9ACEC0";
   break;
 
   case "seminare":
     document.bgColor ="#B5D4BF";
   break;
 
   case "consulting":
     document.bgColor ="#E5E58F";
   break;
 
   case "referenzen":
     document.bgColor ="#91BC9F";
   break;
 
   case "aktuell":
     document.bgColor ="#C8C581";
   break;
 
   case "profile":
     document.bgColor ="#9FCAAD";
   break;
 
   case "kontakt":
     document.bgColor ="#E1E181";
   break;
 
   case "home":
     document.bgColor ="#51897A";
   break;
  }
  
// Anzeige des Layer's mit der sekundärnavigation
  showSubMenue(firstLevel); 

}