function buttonStateHandler(button, enabled) {
 if (button == "prev-arrow") 
   $('prev-arrow').src = enabled ? "img/bt_esq.jpg" : "img/bt_esq.jpg"
 else 
   $('next-arrow').src = enabled ? "img/bt_dir.jpg" : "img/bt_dir.jpg"
}

function animHandler(carouselID, status, direction) {
  var region = $(carouselID).down(".carousel-clip-region")
  if (status == "before") {
    Effect.Fade(region, {to: 0.3, queue: { position:'end', scope: "carousel" }, duration: 0.3})
  }
  if (status == "after") {
    Effect.Fade(region, {to: 1, queue: { position:'end', scope: "carousel" }, duration: 0.3})
  }
}