normal1 = new Image();
normal1.src = "images/menue_1.jpg";    
hover1 = new Image();
hover1.src = "images/menue_o_1.jpg"; 

normal2 = new Image();
normal2.src = "images/menue_2.jpg";    
hover2 = new Image();
hover2.src = "images/menue_o_2.jpg";

normal3 = new Image();
normal3.src = "images/menue_4.jpg";    
hover3 = new Image();
hover3.src = "images/menue_o_4.jpg";

normal4 = new Image();
normal4.src = "images/menue_5.jpg";    
hover4 = new Image();
hover4.src = "images/menue_o_5.jpg"; 

normal5 = new Image();
normal5.src = "images/menue_6.jpg";    
hover5 = new Image();
hover5.src = "images/menue_o_6.jpg"; 


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