/**
 * Launch a window that displays a 'context-sensitive' help. The help files
 * are integrated in all Mireau applications.
 *
 * @author  rens@joxx.nl
 * @version 1.0 - 2003.11.12
 * @param   sDir
 * @param   sTopic
 */
function launchHelpWindow( sDir, sTopic )
{
  var _params = "toolbar=0,width=480,height=400,directories=0,status=0,";
  _params += "scrollbars=1,resize=0,menubar=0,dependent=0,location=0,";
  _params += "screenX=0,screenY=0,system=0"

  // open help and give it focus ..
  _helpWindow = window.open( m_sWebRoot + sDir + '?fuseaction=help&sTopic=' + sTopic, 
                             "help_window", 
                             _params );
  _helpWindow.focus();
}