if (document.images) {
  abouton = new Image(70, 31);
  abouton.src = "/images/header/buttons/about-on.gif";
  aboutoff = new Image(70, 31);
  aboutoff.src = "/images/header/buttons/about-off.gif";

  storeon = new Image(77, 31);
  storeon.src = "/images/header/buttons/store-on.gif";
  storeoff = new Image(77, 31);
  storeoff.src = "/images/header/buttons/store-off.gif";

  healthon = new Image(77, 31);
  healthon.src = "/images/header/buttons/health-on.gif";
  healthoff = new Image(77, 31);
  healthoff.src = "/images/header/buttons/health-off.gif";

  dieton = new Image(69, 31);
  dieton.src = "/images/header/buttons/diet-on.gif";
  dietoff = new Image(69, 31);
  dietoff.src = "/images/header/buttons/diet-off.gif";

  fitnesson = new Image(84, 31);
  fitnesson.src = "/images/header/buttons/fitness-on.gif";
  fitnessoff = new Image(84, 31);
  fitnessoff.src = "/images/header/buttons/fitness-off.gif";

  freebieon = new Image(77, 31);
  freebieon.src = "/images/header/buttons/freebie-on.gif";
  freebieoff = new Image(77, 31);
  freebieoff.src = "/images/header/buttons/freebie-off.gif";

  recipeson = new Image(51, 31);
  recipeson.src = "/images/header/buttons/recipes-on.gif";
  recipesoff = new Image(51, 31);
  recipesoff.src = "/images/header/buttons/recipes-off.gif";

  fyion = new Image(59, 31);
  fyion.src = "/images/header/buttons/fyi-on.gif";
  fyioff = new Image(59, 31);
  fyioff.src = "/images/header/buttons/fyi-off.gif";

  recipeconteston = new Image(61, 31);
  recipeconteston.src = "/images/header/buttons/recipecontest-on.gif";
  recipecontestoff = new Image(61, 31);
  recipecontestoff.src = "/images/header/buttons/recipecontest-off.gif";

  calendaron = new Image(58, 31);
  calendaron.src = "/images/header/buttons/calendar-on.gif";
  calendaroff = new Image(58, 31);
  calendaroff.src = "/images/header/buttons/calendar-off.gif";

  contacton = new Image(70, 31);
  contacton.src = "/images/header/buttons/contact-on.gif";
  contactoff = new Image(70, 31);
  contactoff.src = "/images/header/buttons/contact-off.gif";

}

function img_act(imgName) {
  if (document.images) {
     imgOn = eval(imgName + "on.src");
     document [imgName].src = imgOn;
  }
}

function img_inact(imgName) {
  if (document.images) {
     imgOff = eval(imgName + "off.src");
     document [imgName].src = imgOff;
  }
}