// dynamic slide behaviours

   $(document).ready(function()
   {
      $('#slideshow').cycle({ timeout: 4000, pause: 1, pager: '#slidenav', cleartype: 1 });
   });

   // preload images for rollovers

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

      home1 = new Image(68,26); home1.src = menudir + 'home1.gif';
      home2 = new Image(68,26); home2.src = menudir + 'home2.gif';

      about1 = new Image(81,26); about1.src = menudir + 'about1.gif';
      about2 = new Image(81,26); about2.src = menudir + 'about2.gif';

      exhibitions1 = new Image(96,26); exhibitions1.src = menudir + 'exhibitions1.gif';
      exhibitions2 = new Image(96,26); exhibitions2.src = menudir + 'exhibitions2.gif';

      events1 = new Image(64,26); events1.src = menudir + 'events1.gif';
      events2 = new Image(64,26); events2.src = menudir + 'events2.gif';

      education1 = new Image(89,26); education1.src = menudir + 'education1.gif';
      education2 = new Image(89,26); education2.src = menudir + 'education2.gif';

      shop1 = new Image(52,26); shop1.src = menudir + 'shop1.gif';
      shop2 = new Image(52,26); shop2.src = menudir + 'shop2.gif';

      plan1 = new Image(131,26); plan1.src = menudir + 'plan1.gif';
      plan2 = new Image(131,26); plan2.src = menudir + 'plan2.gif';

      involved1 = new Image(106,26); involved1.src = menudir + 'involved1.gif';
      involved2 = new Image(106,26); involved2.src = menudir + 'involved2.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"); 
   }