function setDisplayBlock(id)
{
  if (document.getElementById)
  {
    element = document.getElementById(id);
  }
  else if (document.all)
  {
    element = document.all[id];
  }
  else return;

  if (element.style)
  {
    if (element.style.display != 'block' )
    {
      element.style.display = 'block';
    }

  }
}
function setDisplayNone(id)
{
  if (document.getElementById)
  {
    element = document.getElementById(id);
  }
  else if (document.all)
  {
    element = document.all[id];
  }
  else return;

  if (element.style)
  {
    if (element.style.display != 'none' )
    {
      element.style.display = 'none';
    }

  }
}