if (document.images) {            // Active Images
            img1on = new Image();      
            img1on.src = "images/touren_over.gif";
            img2on = new Image(); 
            img2on.src = "images/anlege_over.gif"; 
            img3on = new Image(); 
            img3on.src = "images/reed_over.gif";
            img4on = new Image(); 
            img4on.src = "images/ausflug_over.gif";
            img5on = new Image(); 
            img5on.src = "images/radschiff_over.gif";
            img6on = new Image(); 
            img6on.src = "images/aktuell_over.gif";
            img7on = new Image(); 
            img7on.src = "images/ruegen_over.gif";
            img8on = new Image(); 
            img8on.src = "images/kap_on.gif";
            img9on = new Image(); 
            img9on.src = "images/kreide_on.gif";
            img10on = new Image(); 
            img10on.src = "images/iusedom_on.gif";
            img11on = new Image(); 
            img11on.src = "images/ihiddensee_on.gif";
            img12on = new Image(); 
            img12on.src = "images/ivilm_on.gif";
            img13on = new Image(); 
            img13on.src = "images/rundruegen_on.gif";
            img14on = new Image(); 
            img14on.src = "images/fest_on.gif";
            img15on = new Image(); 
            img15on.src = "images/fahrplan_over.gif";

			img1off = new Image(); 
            img1off.src = "images/touren_off.gif";
            img2off = new Image();          
            img2off.src = "images/anlege_off.gif";
            img3off = new Image();          
            img3off.src = "images/reed_off.gif";
            img4off = new Image();          
            img4off.src = "images/ausflug_off.gif";
            img5off = new Image();          
            img5off.src = "images/radschiff_off.gif";
            img6off = new Image();          
            img6off.src = "images/aktuell_off.gif";
            img7off = new Image();          
            img7off.src = "images/ruegen_off.gif";
            img8off = new Image();          
            img8off.src = "images/kap_off.gif";
            img9off = new Image();          
            img9off.src = "images/kreide_off.gif";
            img10off = new Image();          
            img10off.src = "images/iusedom_off.gif";
            img11off = new Image();          
            img11off.src = "images/ihiddensee_off.gif";
            img12off = new Image();          
            img12off.src = "images/ivilm_off.gif";
            img13off = new Image();          
            img13off.src = "images/rundruegen_off.gif";
            img14off = new Image();          
            img14off.src = "images/fest_off.gif";
            img15off = new Image();          
            img15off.src = "images/fahrplan_off.gif";

        }

// Aktiviert die Bilder
function imgOn(imgName) {
        if (document.images) {
            document[imgName].src = eval(imgName + "on.src");
        }
}

// Deaktiviert die Bilder
function imgOff(imgName) {
        if (document.images) {
            document[imgName].src = eval(imgName + "off.src");
        }
}