function testSSO(url) 
{
  var o = null;
  if(window.XMLHttpRequest) 
  { // Mozilla, Safari,...
    o = new XMLHttpRequest();
    if(o.overrideMimeType) o.overrideMimeType('text/xml');
  }
  else if(window.ActiveXObject) 
  { // IE
    try { o = new ActiveXObject("Msxml2.XMLHTTP");} 
    catch (e) 
    {
      try {o = new ActiveXObject("Microsoft.XMLHTTP");} catch (e) {}
    }
  }
  o.open('GET', url+'sso/test.php', false);
  o.send(null);
  if(o.readyState == 4) return(o.status);
  else return(false);
}