// preload images for menu and toolbar rollovers

   if (document.images) 
   {
      var menudir = '/images/menu/';

      // main menu
      menuHome1 = new Image(55,26);        menuHome1.src = menudir + 'home1.gif';
      menuHome2 = new Image(55,26);        menuHome2.src = menudir + 'home2.gif';
      menuEvents1 = new Image(118,26);     menuEvents1.src = menudir + 'events1.gif';
      menuEvents2 = new Image(118,26);     menuEvents2.src = menudir + 'events2.gif';
      menuVisit1 = new Image(64,26);       menuVisit1.src = menudir + 'visit1.gif';
      menuVisit2 = new Image(64,26);       menuVisit2.src = menudir + 'visit2.gif';
      menuAbout1 = new Image(75,26);       menuAbout1.src = menudir + 'about1.gif';
      menuAbout2 = new Image(75,26);       menuAbout2.src = menudir + 'about2.gif';
      menuSupport1 = new Image(157,26);    menuSupport1.src = menudir + 'support1.gif';
      menuSupport2 = new Image(157,26);    menuSupport2.src = menudir + 'support2.gif';
      menuEducation1 = new Image(107,26);  menuEducation1.src = menudir + 'education1.gif';
      menuEducation2 = new Image(107,26);  menuEducation2.src = menudir + 'education2.gif';
      menuResident1 = new Image(142,26);   menuResident1.src = menudir + 'resident1.gif';
      menuResident2 = new Image(142,26);   menuResident2.src = menudir + 'resident2.gif';
      menuGetinvolved1 = new Image(96,26); menuGetinvolved1.src = menudir + 'getinvolved1.gif';
      menuGetinvolved2 = new Image(96,26); menuGetinvolved2.src = menudir + 'getinvolved2.gif';
      menuContact1 = new Image(82,26);     menuContact1.src = menudir + 'contact1.gif';
      menuContact2 = new Image(82,26);     menuContact2.src = menudir + 'contact2.gif';

      // additional sitewide links
      tickets1 = new Image(180,25);        tickets1.src = menudir + 'tickets1.gif';
      tickets2 = new Image(180,25);        tickets2.src = menudir + 'tickets2.gif';
      donate1 = new Image(180,25);         donate1.src = menudir + 'donate1.gif';
      donate2 = new Image(180,25);         donate2.src = menudir + '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'); 
   }