gistfile1.js

var loaded = false;

function startLoading() {
  loaded = false;
  window.setTimeout('showLoadingImage()', 1000);
}

function showLoadingImage() {
  var el = document.getElementById("more");
  if (el && !loaded) {
      el.className = "loading";
      new Effect.Appear('more');
  }
}

function stopLoading() {
   Element.removeClass('loading');
   loaded = true;
}