function move_in(img_name,img_src) {
document[img_name].src=img_src;
}

function move_out(img_name,img_src) {
document[img_name].src=img_src;
}

function FensterOeffnen (Adresse) {
  Fenster1 = window.open(Adresse, "Zweitfenster", "width=550,height=550,left=100,top=100");
  Fenster1.focus();
}