if (document.images) {
         eon = new Image(119, 19);
         eon.src = "/z-m-e-on.jpg";
         fon = new Image(119, 19);
         fon.src = "/z-m-f-on.jpg";
         gon = new Image(119, 19);
         gon.src = "/z-m-g-on.jpg";
         hon = new Image(119, 19);
         hon.src = "/z-m-h-on.jpg";

         ion = new Image(119, 19);
         ion.src = "/z-m-i-on.jpg";
         jon = new Image(119, 19);
         jon.src = "/z-m-j-on.jpg";
         kon = new Image(119, 19);
         kon.src = "/z-m-k-on.jpg";
         lon = new Image(119, 19);
         lon.src = "/z-m-l-on.jpg";

         mon = new Image(119, 19);
         mon.src = "/z-m-m-on.jpg";
         non = new Image(119, 19);
         non.src = "/z-m-n-on.jpg";
         oon = new Image(119, 19);
         oon.src = "/z-m-o-on.jpg";
         pon = new Image(119, 19);
         pon.src = "/z-m-p-on.jpg";

         eoff = new Image(119, 19);
         eoff.src = "/z-m-e-off.jpg";
         foff = new Image(119, 19);
         foff.src = "/z-m-f-off.jpg";
         goff = new Image(119, 19);
         goff.src = "/z-m-g-off.jpg";
         hoff = new Image(119, 19);
         hoff.src = "/z-m-h-off.jpg";

         ioff = new Image(119, 19);
         ioff.src = "/z-m-i-off.jpg";
         joff = new Image(119, 19);
         joff.src = "/z-m-j-off.jpg";
         koff = new Image(119, 19);
         koff.src = "/z-m-k-off.jpg";
         loff = new Image(119, 19);
         loff.src = "/z-m-l-off.jpg";

         moff = new Image(119, 19);
         moff.src = "/z-m-m-off.jpg";
         noff = new Image(119, 19);
         noff.src = "/z-m-n-off.jpg";
         ooff = new Image(119, 19);
         ooff.src = "/z-m-o-off.jpg";
         poff = new Image(119, 19);
         poff.src = "/z-m-p-off.jpg";

         }

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;
         }
}