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) {
    msnav__08_over = newImage("/images/nav/msnav__08-over.jpg");
    msnav__09_over = newImage("/images/nav/msnav__09-over.jpg");
    msnav__10_over = newImage("/images/nav/msnav__10-over.jpg");
    msnav__11_over = newImage("/images/nav/msnav__11-over.jpg");
    msnav__12_over = newImage("/images/nav/msnav__12-over.jpg");
    msnav__13_msnav__09_over = newImage("/images/nav/msnav__13-msnav__09_over.jpg");
    msnav__13_msnav__10_over = newImage("/images/nav/msnav__13-msnav__10_over.jpg");
    msnav__13_msnav__11_over = newImage("/images/nav/msnav__13-msnav__11_over.jpg");
    msnav__13_msnav__12_over = newImage("/images/nav/msnav__13-msnav__12_over.jpg");
    preloadFlag = true;
  }
}