out1 = new Image();
  out1.src = "images/button/ueber.gif";
  on1 = new Image();
  on1.src = "images/button/ueber_on.gif";

  out2 = new Image();
  out2.src = "images/button/kinder.gif";
  on2 = new Image();
  on2.src = "images/button/kinder_on.gif";

  out3 = new Image();
  out3.src = "images/button/familien.gif";
  on3 = new Image();
  on3.src = "images/button/familien_on.gif";

  out4 = new Image();
  out4.src = "images/button/verleih.gif";
  on4 = new Image();
  on4.src = "images/button/verleih_on.gif";

  out5 = new Image();
  out5.src = "images/button/kontakt.gif";
  on5 = new Image();
  on5.src = "images/button/kontakt_on.gif";
  
  out6 = new Image();
  out6.src = "images/button/links.gif";
  on6 = new Image();
  on6.src = "images/button/links_on.gif";

  function change(Bildnr,Bildobjekt)
  {
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