function showLoader()
{ 
  document.getElementsByTagName('body').item(0).style.cursor = "wait";
  var obj = document.getElementById('loader');

  if ( ! obj && process_request)
  {
      obj = document.createElement("DIV");
      obj.id = "loader";
      obj.innerHTML = process_request;

      document.body.appendChild(obj);
  }
}

function hideLoader()
{
  document.getElementsByTagName('body').item(0).style.cursor = "auto";
  try
  {
    var obj = document.getElementById("loader");
    obj.style.display = 'none';
    document.body.removeChild(obj);
  }
  catch (ex)
  {}
}