function ShowHideLayer( strName)
{
  var idLayer = eval( strName);
  var strDisplay = idLayer.style.display;
  idLayer.style.display = ( strDisplay == '') ? 'none' : '';
  return;
}

function ShowHide( divID)
{
  var Child = eval( 'det_' + divID);
  var Img   = eval( 'img_'   + divID);
  if( Child.style.display == '')
  {
    Child.style.display = 'none';
    Img.src = '/Images/close.gif';
  }
  else
  {
    Child.style.display = '';
    Img.src = '/Images/open.gif';
  }
}