function slideshowMoveLeft() {
  var interiorSection = document.getElementById("interior-section");
  var queue = Effect.Queues.get("global");

  if(interiorSection.offsetLeft < 0 && queue.size() <= 0)
  {
    new Effect.Move(interiorSection, { x: 585, y: 0, mode: 'relative', queue: 'end', limit: 1 });
  }
}

function slideshowMoveRight() {
  var interiorSection = document.getElementById("interior-section");
  var queue = Effect.Queues.get("global");

  if(interiorSection.offsetLeft > -1170 && queue.size() <= 0)
  {
    new Effect.Move(interiorSection, { x: -585, y: 0, mode: 'relative', queue: 'end', limit: 1 });
  }
}