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

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) {
    glavnaya_over = newImage("images/b2_glavnaya_a.gif");
    production_over = newImage("images/b2_production_a.gif");
    price_over = newImage("images/b2_price_a.gif");
    dostavka_over = newImage("images/b2_dostavka2_a.gif");
    review_over = newImage("images/b2_review_a.gif");
    contacts_over = newImage("images/b2_contacts_a.gif");
    login_over = newImage("images/b2_login_a.gif");
    welcome_over = newImage("images/b2_welcome_a.gif");
    news_over = newImage("images/b2_news_a.gif");
    preloadFlag = true;
  }
}