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) {
    index_03_over = newImage("fileadmin/template/images/index_03-over.jpg");
    index_07_over = newImage("fileadmin/template/images/index_07-over.jpg");
    index_11_over = newImage("fileadmin/template/images/index_11-over.jpg");
    index_15_over = newImage("fileadmin/template/images/index_15-over.jpg");
    index_19_over = newImage("fileadmin/template/images/index_19-over.jpg");
    index_22_over = newImage("fileadmin/template/images/index_22-over.jpg");
    index_27_over = newImage("fileadmin/template/images/index_27-over.jpg");
    index_29_over = newImage("fileadmin/template/images/index_29-over.jpg");
    index_34_over = newImage("fileadmin/template/images/index_34-over.jpg");
    index_37_over = newImage("fileadmin/template/images/index_37-over.jpg");
    index_42_over = newImage("fileadmin/template/images/index_42-over.jpg");
    preloadFlag = true;
  }
}