// Hover Image
        function startPageHoverImage(menuId) {
                  document.getElementById("hoverImageContainer").src = "Grafiken/startpage/navi_" + menuId + "_hover.gif";
        }

        // Image wieder verschwinden lassen
        function startPageNormalizeImage() {
                document.getElementById("hoverImageContainer").src = "Grafiken/startpage/0.gif";
        }