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) {
    search_butt_over = newImage("images/search_butt-over.gif");
    search_butt_down = newImage("images/search_butt-down.gif");
	en_over = newImage("images/en-over.gif");
    en_down = newImage("images/en.gif");
	ro_over = newImage("images/ro-over.gif");
    ro_down = newImage("images/ro.gif");
	preloadFlag = true;
  }
}