if (document.images) {

main_on = new Image();
main_on.src = "/img/menu/main_on.jpg";

main_off = new Image();
main_off.src = "/img/menu/main.jpg";

wi_fi_on = new Image();
wi_fi_on.src = "/img/menu/wi_fi_on.jpg";

wi_fi_off = new Image();
wi_fi_off.src = "/img/menu/wi_fi.jpg";

notebooks_on = new Image();
notebooks_on.src = "/img/menu/notebooks_on.jpg";

notebooks_off = new Image();
notebooks_off.src = "/img/menu/notebooks.jpg";

adapter_on = new Image();
adapter_on.src = "/img/menu/adapter_on.jpg";

adapter_off = new Image();
adapter_off.src = "/img/menu/adapter.jpg";

hotspots_on = new Image();
hotspots_on.src = "/img/menu/hotspots_on.jpg";

hotspots_off = new Image();
hotspots_off.src = "/img/menu/hotspots.jpg";

articles_on = new Image();
articles_on.src = "/img/menu/articles_on.jpg";

articles_off = new Image();
articles_off.src = "/img/menu/articles.jpg";

about_on = new Image();
about_on.src = "/img/menu/about_on.jpg";

about_off = new Image();
about_off.src = "/img/menu/about.jpg";

faq_on = new Image();
faq_on.src = "/img/menu/faq_on.jpg";

faq_off = new Image();
faq_off.src = "/img/menu/faq.jpg";

contacts_on = new Image();
contacts_on.src = "/img/menu/contacts_on.jpg";

contacts_off = new Image();
contacts_off.src = "/img/menu/contacts.jpg";

}
function On(name) {
	        if (document.images) {
                document[name].src=eval(name + "_on.src");
                
        }     
		else alert('FUCK!')
}
function Off(name) {
        if (document.images) {
                document[name].src=eval(name + "_off.src");
        }
}