function detectBrowser(okURL)
{
  ILLEGAL_BROWSER_REDIRECT = '../html/browser_error.html';
  LEGAL_BROWSER_REDIRECT = okURL;

  version = parseInt(navigator.appVersion);

  browser='OTHER';

  if ( navigator.appName == 'Netscape' )
  {
    browser = 'NS' + version;
  }

  if ( navigator.appName == 'Microsoft Internet Explorer' )
  {
    browser = 'MSIE' + version;
  }


  if ( navigator.appName == "Opera" && version >= 6 )
  {
    browser = 'OPERA' + version;
  }

  if ( navigator.appVersion.indexOf('MSIE 3') > 0 )
  {
    browser = 'MSIE3';
  }

  if ( browser=='MSIE3' || browser=='NS3' || browser=='NS4' || browser=='OTHER' )
  {
    redirect = ILLEGAL_BROWSER_REDIRECT;
  }
  else
  {
    redirect = LEGAL_BROWSER_REDIRECT;
  }

//  alert ("BROWSER DETECTED = <" + browser + ">\n REDIRECT TO <" + redirect + ">");

  window.location = redirect;
}