// Pre-load non-rollover, non-menu images into browser cache
function preloadImages () {
/*
   var d=document; // For convenience

   if (!d.genericImages) d.genericImages = new Array();

   if (d.images) {

      var a = preloadImages.arguments;

      var x;
      var y = d.genericImages.length;

      for (x = 0; x < a.length; x++) {
         d.genericImages[y] = new Image;
         d.genericImages[y].src = a[x];
         y++;
      }
   }
*/
}

// Turn just roll-overs off, leaving menus alone.
function rollOffRollovers () {

   for (var rollOverName in document.rollOverNames) {
      imgOff(document.rollOverNames[rollOverName],
             document.rollOverExts[rollOverName]);
   }

}

// Turn a roll-over "on"
function imgOn (imgName,imgExt) {

   rollOffRollovers();
   document[imgName].src = "../../images/" + imgName + "-over." + imgExt;

}

// Turn a roll-over "off"
function imgOff (imgName,imgExt) {

   document[imgName].src = "../../images/" + imgName + "." + imgExt;

}