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) {
leistungen_over = newImage("./images/leistungen_over.gif");
methoden_over = newImage("./images/methoden_over.gif");
über_uns_over = newImage("./images/über_uns_over.gif");
archiv_over = newImage("./images/archiv_over.gif");
kontakt_over = newImage("./images/kontakt_over.gif");
impressum_over = newImage("./images/impressum_over.gif");
intro_over = newImage("./images/intro_over.gif");
senden_over = newImage("./images/senden_over.gif");
senden_down = newImage("./images/senden_down.gif");
preloadFlag = true;
}}