function slideFade () {

   var $activeSlide = $('#communication ul li.active');

   if ($activeSlide.next().length == 0) {
      $nextSlide = $('li#first');
   } else {
      $nextSlide = $activeSlide.next();
   }

   $activeSlide.addClass('last');
   $nextSlide.css({opacity: 0.0}).addClass('active').animate({opacity: 1.0}, 3000, function() {
      $activeSlide.removeClass('active last');
   });
}

$(document).ready(function(){
   setInterval("slideFade()", 6000);

   $(".product-description").css("opacity", "0");

   $('#product-list div.product').hover(
      function () {
         $(this).find(".product-description").addClass("hover").stop().animate({opacity: '0.9'}, 500);
      },
      function () {
         $(this).find(".product-description").stop().animate({opacity: '0'}, 500, function () { $(this).find(".product-description").removeClass("hover"); });
      }
   );
});