menu_stteatraleon = new Image(); 
menu_stteatraleon.src = "img/menu_stteatrale_on.gif";
menu_stteatraleoff = new Image(); 
menu_stteatraleoff.src = "img/menu_stteatrale.gif";

menu_archiviogdon = new Image(); 
menu_archiviogdon.src = "img/menu_archiviogd_on.gif";
menu_archiviogdoff = new Image(); 
menu_archiviogdoff.src = "img/menu_archiviogd.gif";

menu_galleryon = new Image(); 
menu_galleryon.src = "img/menu_gallery_on.gif";
menu_galleryoff = new Image(); 
menu_galleryoff.src = "img/menu_gallery.gif";