// get the browser information

function getOsName( )
  {
    var userOs      = "" ;
    var regexResult = "" ;
    var moreInfo    = true ;
    var usrAgent    = navigator.userAgent.toUpperCase( ) ;
    if ( usrAgent.indexOf("WIN") != -1 ) userOs = "Windows" ;
    if ( usrAgent.indexOf("MAC") != -1 ) userOs = "MacOS" ;
    if ( usrAgent.indexOf("X11") != -1 ) userOs = "UNIX" ;
    return userOs ;
  }

function getBrowserName( )
  {
    var userBrowser = "" ;
    var appName     = navigator.appName.toUpperCase( ) ;
    if ( appName.indexOf("NETSCAPE")  != -1 ) userBrowser = "Netscape" ;
    if ( appName.indexOf("MICROSOFT") != -1 ) userBrowser = "Explorer" ;
    return userBrowser ;
  }

function getBrowserVersion( )
  {
    var version    = "" ;
    var start      = 0  ;
    var end        = 0  ;
    var usrBrowser = getBrowserName( ) ;
    var usrAgent   = navigator.userAgent.toUpperCase( ) ;
    var appVersion = navigator.appVersion ;
    if ( usrBrowser == "Netscape" )
      {
	start   = appVersion.indexOf(" ",0) ;
	version = appVersion.substring(0,start) ;
      }
      if ( usrBrowser == "Explorer" )
	{
  	  start   = appVersion.indexOf("MSIE ",0) + 5 ;
 	  end     = appVersion.indexOf(";",start) ;
  	  version = appVersion.substring(start,end) ;
	}
	return version ;
  }