function ajaxobj()
{
  try
  {
     _ajaxobj = new ActiveXObject("Msxml2.XMLHTTP");
  }
  catch (e)
  {
     try
     {
       _ajaxobj = new ActiveXObject("Microsoft.XMLHTTP");
     }
     catch (E)
     {
       _ajaxobj = false;
     }
  }

  if (!_ajaxobj && typeof XMLHttpRequest!='undefined')
  {
    _ajaxobj = new XMLHttpRequest();
  }

  return _ajaxobj;
}