home = new Image();
home.src = '/images/home_nav.gif';
home_over = new Image();
home_over.src = '/images/home_nav_over.gif';

about = new Image();
about.src = '/images/about_nav.gif';
about_over = new Image();
about_over.src = '/images/about_nav_over.gif';

menu = new Image();
menu.src = '/images/menu_nav.gif';
menu_over = new Image();
menu_over.src = '/images/menu_nav_over.gif';

plan = new Image();
plan.src = '/images/plan_nav.gif';
plan_over = new Image();
plan_over.src = '/images/plan_nav_over.gif';

vivolo = new Image();
vivolo.src = '/images/vivolo.gif';
vivolo_over = new Image();
vivolo_over.src = '/images/vivolo_h.gif';

bv = new Image();
bv.src = '/images/bar_vetro.gif';
bv_over = new Image();
bv_over.src = '/images/bar_vetro_h.gif';

cucina = new Image();
cucina.src = '/images/cucina_vivolo.gif';
cucina_over = new Image();
cucina_over.src = '/images/cucina_vivolo_h.gif';

function navRoll(navName,navState) {
	if (document.images) {
		document.images[navName].src = eval(navState + ".src");
	}
}