Normal1 = new Image();
Normal1.src = "img/bt_home.gif";
Highlight1 = new Image();
Highlight1.src = "img/bt_home_mo.gif";

Normal2 = new Image();
Normal2.src = "img/bt_photos.gif";
Highlight2 = new Image();
Highlight2.src = "img/bt_photos_mo.gif";

Normal3 = new Image();
Normal3.src = "img/bt_person.gif";
Highlight3 = new Image();
Highlight3.src = "img/bt_person_mo.gif";

Normal4 = new Image();
Normal4.src = "img/bt_links.gif";
Highlight4 = new Image();
Highlight4.src = "img/bt_links_mo.gif";

Normal5 = new Image();
Normal5.src = "img/bt_kontakt.gif";
Highlight5 = new Image();
Highlight5.src = "img/bt_kontakt_mo.gif";

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

function init(){
        if(window.opera){
                 document.getElementById('wrapper').style.minHeight=window.innerHeight - 60+"px";
         }
        else if(document.all){
                document.getElementById('wrapper').style.height=document.documentElement.clientHeight - 60+"px";
        }
         else{
                 document.getElementById('wrapper').style.minHeight=window.innerHeight - 60+"px";
         }

}