if (document.images)
   {
   o1 = new Image(43,18);
   o1.src = "images/menu/home1.gif";
   o2 = new Image(43,18);
   o2.src = "images/menu/home2.gif";

   a1 = new Image(59,18);
   a1.src = "images/menu/about1.gif";
   a2 = new Image(59,18);
   a2.src = "images/menu/about2.gif";

   l1 = new Image(59,18);
   l1.src = "images/menu/calendar1.gif";
   l2 = new Image(59,18);
   l2.src = "images/menu/calendar2.gif";

   d1 = new Image(50,18);
   d1.src = "images/menu/donate1.gif";
   d2 = new Image(50,18);
   d2.src = "images/menu/donate2.gif";

   v1 = new Image(63,18);
   v1.src = "images/menu/volunteer1.gif";
   v2 = new Image(63,18);
   v2.src = "images/menu/volunteer2.gif";

   s1 = new Image(84,18);
   s1.src = "images/menu/sites1.gif";
   s2 = new Image(84,18);
   s2.src = "images/menu/sites2.gif";

   c1 = new Image(55,18);
   c1.src = "images/menu/con1.gif";
   c2 = new Image(55,18);
   c2.src = "images/menu/con2.gif";
   }

function imgSwap(imgDocID,imgObjName)
   {
   if (document.images)
      {
      document.images[imgDocID].src = eval(imgObjName + ".src")
      }
   }