function swapImage (elId, newState) {
	document.getElementById (elId).src = preloadedImages[elId+"_"+newState].src;
}

var preloadedImages = new Array ();

preloadedImages["menu_home_off"] = new Image (81, 50);
preloadedImages["menu_home_off"].src = "skin1/images/menu_home_off.gif";

preloadedImages["menu_home_on"] = new Image (81, 50);
preloadedImages["menu_home_on"].src = "skin1/images/menu_home_on.gif";

preloadedImages["menu_ourstory_off"] = new Image (109, 50);
preloadedImages["menu_ourstory_off"].src = "skin1/images/menu_about_off.gif";

preloadedImages["menu_ourstory_on"] = new Image (109, 50);
preloadedImages["menu_ourstory_on"].src = "skin1/images/menu_about_on.gif";

preloadedImages["menu_shopproducts_off"] = new Image (179, 50);
preloadedImages["menu_shopproducts_off"].src = "skin1/images/menu_shop_off.gif";

preloadedImages["menu_shopproducts_on"] = new Image (179, 50);
preloadedImages["menu_shopproducts_on"].src = "skin1/images/menu_shop_on.gif";

preloadedImages["menu_treefarm_off"] = new Image (242, 50);
preloadedImages["menu_treefarm_off"].src = "skin1/images/menu_treefarm_off.gif";

preloadedImages["menu_treefarm_on"] = new Image (242, 50);
preloadedImages["menu_treefarm_on"].src = "skin1/images/menu_treefarm_on.gif";

preloadedImages["menu_restaurants_off"] = new Image (242, 50);
preloadedImages["menu_restaurants_off"].src = "skin1/images/menu_restaurants_off.gif";

preloadedImages["menu_restaurants_on"] = new Image (242, 50);
preloadedImages["menu_restaurants_on"].src = "skin1/images/menu_restaurants_on.gif";

preloadedImages["menu_photos_off"] = new Image (242, 50);
preloadedImages["menu_photos_off"].src = "skin1/images/menu_photo_off.gif";

preloadedImages["menu_photos_on"] = new Image (242, 50);
preloadedImages["menu_photos_on"].src = "skin1/images/menu_photo_on.gif";

preloadedImages["menu_news_off"] = new Image (242, 50);
preloadedImages["menu_news_off"].src = "skin1/images/menu_news_off.gif";

preloadedImages["menu_news_on"] = new Image (242, 50);
preloadedImages["menu_news_on"].src = "skin1/images/menu_news_on.gif";

preloadedImages["menu_produce_off"] = new Image (242, 50);
preloadedImages["menu_produce_off"].src = "skin1/images/menu_produce_off.gif";

preloadedImages["menu_produce_on"] = new Image (242, 50);
preloadedImages["menu_produce_on"].src = "skin1/images/menu_produce_on.gif";

preloadedImages["menu_calendar_off"] = new Image (242, 50);
preloadedImages["menu_calendar_off"].src = "skin1/images/menu_calendar_off.gif";

preloadedImages["menu_calendar_on"] = new Image (242, 50);
preloadedImages["menu_calendar_on"].src = "skin1/images/menu_calendar_on.gif";