if (document.images) {

ristorante_on = new Image();  
  ristorante_on.src ="images/vristoranteon.gif";
pizzeria_on = new Image();  
  pizzeria_on.src ="images/vpizzeriaon.gif";
banquet_on = new Image();  
  banquet_on.src ="images/vbanqueton.gif";
cater1_on = new Image();  
  cater1_on.src ="images/vcater1on.gif";
cater2_on = new Image();  
  cater2_on.src ="images/vcater2on.gif";
location_on = new Image();  
  location_on.src ="images/vlocationon.gif";
dessert_on = new Image();
  dessert_on.src ="images/vdesserton.gif";
coup_on = new Image();
  coup_on.src ="images/vcoupon.gif";
about_on = new Image();
  about_on.src ="images/vabouton.gif";
home_on = new Image();
  home_on.src ="images/vhomeon.gif";

ristorante_off = new Image();  
  ristorante_off.src ="images/vristoranteoff.gif";
pizzeria_off = new Image();  
  pizzeria_off.src ="images/vpizzeriaoff.gif";
banquet_off = new Image();  
  banquet_off.src ="images/vbanquetoff.gif";
cater1_off = new Image();  
  cater1_off.src ="images/vcater1off.gif";
cater2_off = new Image();  
  cater2_off.src ="images/vcater2off.gif";
location_off = new Image();  
  location_off.src ="images/vlocationoff.gif";
dessert_off = new Image();
  dessert_off.src ="images/vdessertoff.gif";
coup_off = new Image();
  coup_off.src ="images/vcoupoff.gif";
about_off = new Image();
  about_off.src ="images/vaboutoff.gif";
home_off = new Image();
  home_off.src ="images/vhomeoff.gif";

  
}

function changeImages() {

  if (document.images) {

    for (var i=0; i<changeImages.arguments.length; i+=2) {

      document[changeImages.arguments[i]].src = eval(changeImages.arguments[i+1] + ".src");

    }

  }

}