function ContentSlide(id)
{
if (document.getElementById(id))
{
  slideElement = document.getElementById(id);
  if (slideElement.style.display == 'none')
  {
    Effect.SlideDown(id, { duration: 1.0 });
  }
  else
  {
    Effect.SlideUp(id, { duration: 1.0 });
  }

}
}