item1 = new Image(); 
item1.src = "images/home.png";
item2 = new Image(); 
item2.src = "images/team.png";
item3 = new Image(); 
item3.src = "images/aktuell.png";
item4 = new Image(); 
item4.src = "images/links.png";
item5 = new Image(); 
item5.src = "images/aktiv.png";
item1_selected = new Image(); 
item1_selected.src = "images/home_selected.png";
item2_selected = new Image(); 
item2_selected.src = "images/team_selected.png";
item3_selected = new Image(); 
item3_selected.src = "images/aktuell_selected.png";
item4_selected = new Image(); 
item4_selected.src = "images/links_selected.png";
item5_selected = new Image(); 
item5_selected.src = "images/aktiv_selected.png";

function changeImage(nr, newimg)
{
window.document.images[nr].src = newimg.src;
}