impressum_i = new Image(); 
  impressum_i.src = "images/impressum_inactive.gif";
  impressum_a = new Image(); 
  impressum_a.src = "images/impressum_active.gif";
  impressum_o = new Image(); 
  impressum_o.src = "images/impressum_over.gif";

  home_i = new Image(); 
  home_i.src = "images/home_inactive.gif";
  home_a = new Image(); 
  home_a.src = "images/home_active.gif";
  home_o = new Image(); 
  home_o.src = "images/home_over.gif";

  partner_i = new Image(); 
  partner_i.src = "images/partner_inactive.gif";
  partner_a = new Image(); 
  partner_a.src = "images/partner_active.gif";
  partner_o = new Image(); 
  partner_o.src = "images/partner_over.gif";

  function Bildwechsel(Bildnr,Bildobjekt)
  {
   window.document.images[Bildnr].src = Bildobjekt.src;
  }