if (document.images) {
    // preload the alternate images offscreen
   homeon = new Image();
   homeon.src = "../images/home2-on.gif";
   storeon = new Image();
   storeon.src = "../images/store2-on.gif";
   recipeon = new Image();
   recipeon.src = "../images/recipe2-on.gif";
   abouton = new Image();
   abouton.src = "../images/about2-on.gif";
   contacton = new Image();
   contacton.src = "../images/contact2-on.gif";
   newson = new Image();
   newson.src = "../images/news2-on.gif";
   oinfoon = new Image();
   oinfoon.src = "../images/oinfo2-on.gif";
   ohelpon = new Image();
   ohelpon.src = "../images/ohelp2-on.gif";
   prodsearchon = new Image();
   prodsearchon.src = "../images/prodsearch2-on.gif";
   basketon = new Image();
   basketon.src = "../images/basket2-on.gif";
   checkouton = new Image();
   checkouton.src = "../images/checkout2-on.gif";
   homeoff = new Image();
   homeoff.src = "../images/home2-off.gif";
   storeoff = new Image();
   storeoff.src = "../images/store2-off.gif";
   recipeoff = new Image();
   recipeoff.src = "../images/recipe2-off.gif";
   aboutoff = new Image();
   aboutoff.src = "../images/about2-off.gif";
   contactoff = new Image();
   contactoff.src = "../images/contact2-off.gif";
   newsoff = new Image();
   newsoff.src = "../images/news2-off.gif";
   oinfooff = new Image();
   oinfooff.src = "../images/oinfo2-off.gif";
   ohelpoff = new Image();
   ohelpoff.src = "../images/ohelp2-off.gif";
   prodsearchoff = new Image();
   prodsearchoff.src = "../images/prodsearch2-off.gif";
   basketoff = new Image();
   basketoff.src = "../images/basket2-off.gif";
   checkoutoff = new Image();
   checkoutoff.src = "../images/checkout2-off.gif";
}
function imgAct(imgName) {
  if (document.images) {
     document[imgName].src = eval(imgName + "on.src");
 }
}
function imgInact(imgName) {
  if (document.images) {
     document[imgName].src = eval(imgName + "off.src");
 }
}