///////////////////////////////////////////////////////////////////////////////////////////////
//                                                                                           //
// Javascript for checking browser version, javascript level and platform                    //
// <script language="JavaScript" src="/js/browsercheck.js" type="text/javascript"></script>  //
//                                                                                           //
// Ultimate client-side JavaScript client sniff. Version 3.03                                //
// (C) Netscape Communications 1999-2001. Permission granted to reuse and distribute.        //
// Revised 17 May 99 to add is_nav5up and is_ie5up (see below).                              //
// Revised 20 Dec 00 to add is_gecko and change is_nav5up to is_nav6up                       //
//                      also added support for IE5.5 Opera4&5 HotJava3 AOLTV                 //
// Revised 22 Feb 01 to correct Javascript Detection for IE 5.x, Opera 4,                    //
//                      correct Opera 5 detection,                                           //
//                      add support for winME and win2k,                                     //
//                      synch with browser-type-oo.js                                        //
// Revised 26 Mar 01 to correct Opera detection                                              //
// Revised 02 Oct 01 to add IE6 detection                                                    //
// Revised 03 Oct 02 to add Nav7 detection (revision by e-Stylus Limited)                    //
//                                                                                           //
///////////////////////////////////////////////////////////////////////////////////////////////

// convert all characters to lowercase to simplify testing

var agt=navigator.userAgent.toLowerCase();

// *** BROWSER VERSION ***
// Note: On IE5, these return 4, so use is_ie5up to detect IE5.

var is_major = parseInt(navigator.appVersion);
var is_minor = parseFloat(navigator.appVersion);

// Note: Opera and WebTV spoof Navigator.  We do strict client detection.
// If you want to allow spoofing, take out the tests for opera and webtv.

var is_nav     = ((agt.indexOf("mozilla") != -1) && (agt.indexOf("spoofer") == -1) && (agt.indexOf("compatible") == -1) && (agt.indexOf("opera") == -1) && (agt.indexOf("webtv") == -1) && (agt.indexOf("hotjava") == -1));
var is_nav2    = (is_nav && (is_major == 2));
var is_nav3    = (is_nav && (is_major == 3));
var is_nav4    = (is_nav && (is_major == 4));
var is_nav4up  = (is_nav && (is_major >= 4));
var is_navonly = (is_nav && ((agt.indexOf(";nav") != -1) || (agt.indexOf("; nav") != -1)));
var is_nav6    = (is_nav && (agt.indexOf("netscape6") != -1));
var is_nav6up  = (is_nav && (is_major >= 5));
var is_nav7    = (is_nav && (agt.indexOf("netscape/7") != -1));
var is_gecko   = (agt.indexOf('gecko') != -1);

var is_ie      = ((agt.indexOf("msie") != -1) && (agt.indexOf("opera") == -1));
var is_ie3     = (is_ie && (is_major < 4));
var is_ie4     = (is_ie && (is_major == 4) && (agt.indexOf("msie 4") != -1));
var is_ie4up   = (is_ie && (is_major >= 4));
var is_ie5     = (is_ie && (is_major == 4) && (agt.indexOf("msie 5.0") != -1));
var is_ie5_5   = (is_ie && (is_major == 4) && (agt.indexOf("msie 5.5") != -1));
var is_ie5up   = (is_ie && !is_ie3 && !is_ie4);
var is_ie5_5up = (is_ie && !is_ie3 && !is_ie4 && !is_ie5);
var is_ie6     = (is_ie && (is_major == 4) && (agt.indexOf("msie 6.") != -1));
var is_ie6up   = (is_ie && !is_ie3 && !is_ie4 && !is_ie5 && !is_ie5_5);

// KNOWN BUG: On AOL4, returns false if IE3 is embedded browser
// or if this is the first browser window opened.  Thus the
// variables is_aol, is_aol3, and is_aol4 aren't 100% reliable.

var is_aol   = (agt.indexOf("aol") != -1);
var is_aol3  = (is_aol && is_ie3);
var is_aol4  = (is_aol && is_ie4);
var is_aol5  = (agt.indexOf("aol 5") != -1);
var is_aol6  = (agt.indexOf("aol 6") != -1);

var is_opera    = (agt.indexOf("opera") != -1);
var is_opera2   = (agt.indexOf("opera 2") != -1 || agt.indexOf("opera/2") != -1);
var is_opera3   = (agt.indexOf("opera 3") != -1 || agt.indexOf("opera/3") != -1);
var is_opera4   = (agt.indexOf("opera 4") != -1 || agt.indexOf("opera/4") != -1);
var is_opera5   = (agt.indexOf("opera 5") != -1 || agt.indexOf("opera/5") != -1);
var is_opera5up = (is_opera && !is_opera2 && !is_opera3 && !is_opera4);
var is_opera6   = (agt.indexOf("opera 6") != -1 || agt.indexOf("opera/6") != -1);

var is_webtv = (agt.indexOf("webtv") != -1); 

var is_TVNavigator = ((agt.indexOf("navio") != -1) || (agt.indexOf("navio_aoltv") != -1)); 
var is_AOLTV       = is_TVNavigator;

var is_hotjava    = (agt.indexOf("hotjava") != -1);
var is_hotjava3   = (is_hotjava && (is_major == 3));
var is_hotjava3up = (is_hotjava && (is_major >= 3));

// *** JAVASCRIPT VERSION CHECK ***

var is_js;
if (is_nav2 || is_ie3) is_js = 1.0;
else if (is_nav3) is_js = 1.1;
else if (is_opera5up) is_js = 1.3;
else if (is_opera) is_js = 1.1;
else if ((is_nav4 && (is_minor <= 4.05)) || is_ie4) is_js = 1.2;
else if ((is_nav4 && (is_minor > 4.05)) || is_ie5) is_js = 1.3;
else if (is_hotjava3up) is_js = 1.4;
else if (is_nav6 || is_gecko) is_js = 1.5;

// NOTE: In the future, update this code when newer versions of JS are released. For now, we try to provide some upward compatibility
// so that future versions of Nav and IE will show they are at *least* JS 1.x capable. Always check for JS version compatibility with > or >=.

else if (is_nav6up) is_js = 1.5;

// NOTE: ie5up on mac is 1.4

else if (is_ie5up) is_js = 1.3

// HACK: no idea for other browsers; always check for JS version with > or >=

else is_js = 0.0;

// *** PLATFORM ***

var is_win   = ( (agt.indexOf("win") != -1) || (agt.indexOf("16bit") != -1));

// NOTE: On Opera 3.0, the userAgent string includes "Windows 95/NT4" on all Win32, so you can't distinguish between Win95 and WinNT.

var is_win95 = ((agt.indexOf("win95") != -1) || (agt.indexOf("windows 95") != -1));

// is this a 16 bit compiled version?

var is_win16 = ((agt.indexOf("win16") != -1) || (agt.indexOf("16bit") != -1) || (agt.indexOf("windows 3.1") != -1) || (agt.indexOf("windows 16-bit") != -1));
var is_win31 = ((agt.indexOf("windows 3.1") != -1) || (agt.indexOf("win16") != -1) || (agt.indexOf("windows 16-bit") != -1));
var is_winme = ((agt.indexOf("win 9x 4.90") != -1));
var is_win2k = ((agt.indexOf("windows nt 5.0") != -1));

// NOTE: Reliable detection of Win98 may not be possible. It appears that:
//       - On Nav 4.x and before you'll get plain "Windows" in userAgent.
//       - On Mercury client, the 32-bit version will return "Win98", but the 16-bit version running on Win98 will still return "Win95".

var is_win98 = ((agt.indexOf("win98") != -1) || (agt.indexOf("windows 98") != -1));
var is_winnt = ((agt.indexOf("winnt") != -1) || (agt.indexOf("windows nt") != -1));
var is_win32 = (is_win95 || is_winnt || is_win98 || ((is_major >= 4) && (navigator.platform == "Win32")) || (agt.indexOf("win32") != -1) || (agt.indexOf("32bit") != -1));
var is_os2   = ((agt.indexOf("os/2") != -1) || (navigator.appVersion.indexOf("OS/2") != -1) || (agt.indexOf("ibm-webexplorer") != -1));
var is_mac   = (agt.indexOf("mac") != -1);

// hack ie5 js version for mac

if (is_mac && is_ie5up) is_js = 1.4;
var is_mac68k = (is_mac && ((agt.indexOf("68k") != -1) || (agt.indexOf("68000") != -1)));
var is_macppc = (is_mac && ((agt.indexOf("ppc") != -1) || (agt.indexOf("powerpc") != -1)));

var is_sun      = (agt.indexOf("sunos") != -1);
var is_sun4     = (agt.indexOf("sunos 4") != -1);
var is_sun5     = (agt.indexOf("sunos 5") != -1);
var is_suni86   = (is_sun && (agt.indexOf("i86") != -1));
var is_irix     = (agt.indexOf("irix") != -1); // SGI
var is_irix5    = (agt.indexOf("irix 5") != -1);
var is_irix6    = ((agt.indexOf("irix 6") != -1) || (agt.indexOf("irix6") != -1));
var is_hpux     = (agt.indexOf("hp-ux") != -1);
var is_hpux9    = (is_hpux && (agt.indexOf("09.") != -1));
var is_hpux10   = (is_hpux && (agt.indexOf("10.") != -1));
var is_aix      = (agt.indexOf("aix") != -1); // IBM
var is_aix1     = (agt.indexOf("aix 1") != -1);    
var is_aix2     = (agt.indexOf("aix 2") != -1);    
var is_aix3     = (agt.indexOf("aix 3") != -1);    
var is_aix4     = (agt.indexOf("aix 4") != -1);    
var is_linux    = (agt.indexOf("inux") != -1);
var is_sco      = (agt.indexOf("sco") != -1) || (agt.indexOf("unix_sv") != -1);
var is_unixware = (agt.indexOf("unix_system_v") != -1); 
var is_mpras    = (agt.indexOf("ncr") != -1); 
var is_reliant  = (agt.indexOf("reliantunix") != -1);
var is_dec      = ((agt.indexOf("dec") != -1) || (agt.indexOf("osf1") != -1) || (agt.indexOf("dec_alpha") != -1) || (agt.indexOf("alphaserver") != -1) || (agt.indexOf("ultrix") != -1) || (agt.indexOf("alphastation") != -1)); 
var is_sinix    = (agt.indexOf("sinix") != -1);
var is_freebsd  = (agt.indexOf("freebsd") != -1);
var is_bsd      = (agt.indexOf("bsd") != -1);
var is_unix     = ((agt.indexOf("x11") != -1) || is_sun || is_irix || is_hpux || is_sco ||is_unixware || is_mpras || is_reliant || is_dec || is_sinix || is_aix || is_linux || is_bsd || is_freebsd);

var is_vms = ((agt.indexOf("vax") != -1) || (agt.indexOf("openvms") != -1));