// preload images for menu and toolbar rollovers

   if (document.images) 
   {
      menudir = "/images/2009/menu/";

      toolbarHome1 = new Image(57,27);
      toolbarHome1.src = menudir + "home1.gif";
      toolbarHome2 = new Image(57,27);
      toolbarHome2.src = menudir + "home2.gif";

      toolbarAbout1 = new Image(88,27);
      toolbarAbout1.src = menudir + "about1.gif";
      toolbarAbout2 = new Image(88,27);
      toolbarAbout2.src = menudir + "about2.gif";

      toolbarBooks1 = new Image(61,27);
      toolbarBooks1.src = menudir + "books1.gif";
      toolbarBooks2 = new Image(61,27);
      toolbarBooks2.src = menudir + "books2.gif";

      toolbarEbooks1 = new Image(66,27);
      toolbarEbooks1.src = menudir + "ebooks1.gif";
      toolbarEbooks2 = new Image(66,27);
      toolbarEbooks2.src = menudir + "ebooks2.gif";

      toolbarSupport1 = new Image(101,27);
      toolbarSupport1.src = menudir + "support1.gif";
      toolbarSupport2 = new Image(101,27);
      toolbarSupport2.src = menudir + "support2.gif";

      toolbarAudioBible1 = new Image(123,27);
      toolbarAudioBible1.src = menudir + "audiobible1.gif";
      toolbarAudioBible2 = new Image(123,27);
      toolbarAudioBible2.src = menudir + "audiobible2.gif";

      toolbarSpecial1 = new Image(110,27);
      toolbarSpecial1.src = menudir + "special1.gif";
      toolbarSpecial2 = new Image(110,27);
      toolbarSpecial2.src = menudir + "special2.gif";

      toolbarDonate1 = new Image(66,27);
      toolbarDonate1.src = menudir + "donate1.gif";
      toolbarDonate2 = new Image(66,27);
      toolbarDonate2.src = menudir + "donate2.gif";

      toolbarAccount1 = new Image(97,23);
      toolbarAccount1.src = menudir + "account1.gif";
      toolbarAccount2 = new Image(97,23);
      toolbarAccount2.src = menudir + "account2.gif";

      toolbarCart1 = new Image(50,23);
      toolbarCart1.src = menudir + "cart1.gif";
      toolbarCart2 = new Image(50,23);
      toolbarCart2.src = menudir + "cart2.gif";

      toolbarEnews1 = new Image(136,23);
      toolbarEnews1.src = menudir + "enews1.gif";
      toolbarEnews2 = new Image(136,23);
      toolbarEnews2.src = menudir + "enews2.gif";

      donate1 = donateb1 = donatec1 = donated1 = new Image(104,104);
      donate1.src = donateb1.src = donatec1.src = donated1.src = '/images/donate1.gif';
      donate2 = donateb2 = donatec2 = donated2 = new Image(104,104);
      donate2.src = donateb2.src = donatec2.src = donated2.src = '/images/donate2.gif';
   }

   // simple image replacements

   function rollOn(imgID)
   {
      if (document.images) document.images[imgID].src = eval(imgID + "2.src"); 
   }

   function rollOff(imgID)
   {
      if (document.images) document.images[imgID].src = eval(imgID + "1.src"); 
   }

   // start jquery slideshow

   $('#slideshow').cycle({ speed: 500, timeout: 7500, pause: 1, pager: '#slidenav' });

   // client-side form field validation

   function checkfield(id,message)
   {
      if (id.value == null || id.value == '')
      {
         alert(message);
         return false;
      }
      else return true;
   }