function newImage(arg) {
        if (document.images) {
                rslt = new Image();
                rslt.src = arg;
                return rslt;
        }
}

function changeImages() {
        if (document.images && (preloadFlag == true)) {
                for (var i=0; i<changeImages.arguments.length; i+=2) {
                        document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
                }
        }
}

var preloadFlag = false;
function preloadImages() {
        if (document.images) {
                meck_pom_over = newImage("pics/karte/meck-pom-over.gif");
                brandenburg_over = newImage("pics/karte/brandenburg-over.gif");
                schleswig_holstein_over = newImage("pics/karte/schleswig-holstein-over.gif");
                niedersachsen_over = newImage("pics/karte/niedersachsen-over.gif");
                sachsen_anhalt_over = newImage("pics/karte/sachsen-anhalt-over.gif");
                nrw_over = newImage("pics/karte/nrw-over.gif");
                hessen_over = newImage("pics/karte/hessen-over.gif");
                rheinland_pfalz_over = newImage("pics/karte/rheinland-pfalz-over.gif");
                saarland_over = newImage("pics/karte/saarland-over.gif");
                thueringen_over = newImage("pics/karte/thueringen-over.gif");
                sachsen_over = newImage("pics/karte/sachsen-over.gif");
                bayern_over = newImage("pics/karte/bayern-over.gif");
                baden_wuerttemberg_over = newImage("pics/karte/baden-wuerttemberg-over.gif");
                preloadFlag = true;
        }
}