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_howworks_off"] = new Image (109, 50);
preloadedImages["menu_howworks_off"].src = "skin1/images/menu_howitworks_off.gif";

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

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

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

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

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

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

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

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

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

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

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

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

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