N1 = new Image(); 
  N1.src = "/images/home_off.gif"; 
  S1 = new Image(); 
  S1.src = "/images/home_on.gif";

  N2 = new Image(); 
  N2.src = "/images/findit_off.gif"; 
  S2 = new Image(); 
  S2.src = "/images/findit_on.gif";

  N3 = new Image(); 
  N3.src = "/images/mail_off.gif"; 
  S3 = new Image(); 
  S3.src = "/images/mail_on.gif";
  
  dolm = new Image();
  dolm.src = "/images/dolmetscher_on.gif";
  lex = new Image();
  lex.src = "/images/lexikon_on.gif";
  pcs = new Image();
  pcs.src = "/images/pcs_on.gif";
  euro = new Image();
  euro.src = "/images/eurocon_on.gif";
  merz = new Image();
  merz.src = "/images/merzbeschallung_on.gif";
  jobboerse = new Image();
  jobboerse.src = "/images/jobboerse_on.gif";

function Wechsel(nr,Bild)  {
	document.images["m" + nr].src = Bild.src;
	};