// **************************
// JavaScript Browser Sniffer
// **************************

// convert all characters to lowercase to simplify testing
var agt = navigator.userAgent.toLowerCase();
var appVer = navigator.appVersion.toLowerCase();

// *** BROWSER VERSION ***
var is_minor = parseFloat(appVer);
var is_major = parseInt(is_minor);

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_opera6 = (agt.indexOf("opera 6") != -1 || agt.indexOf("opera/6") != -1);
var is_opera7 = (agt.indexOf("opera 7") != -1 || agt.indexOf("opera/7") != -1);
var is_opera8 = (agt.indexOf("opera 8") != -1 || agt.indexOf("opera/8") != -1);
var is_opera9 = (agt.indexOf("opera 9") != -1 || agt.indexOf("opera/9") != -1);
var is_opera10 = (agt.indexOf("opera 10") != -1 || agt.indexOf("opera/10") != -1);

var is_opera5up = (is_opera && !is_opera2 && !is_opera3 && !is_opera4);
var is_opera6up = (is_opera && !is_opera2 && !is_opera3 && !is_opera4 && !is_opera5);
var is_opera7up = (is_opera && !is_opera2 && !is_opera3 && !is_opera4 && !is_opera5 && !is_opera6);
var is_opera8up = (is_opera && !is_opera2 && !is_opera3 && !is_opera4 && !is_opera5 && !is_opera6 && !is_opera7);
var is_opera9up = (is_opera && !is_opera2 && !is_opera3 && !is_opera4 && !is_opera5 && !is_opera6 && !is_opera7 && !is_opera8);
var is_opera10up = (is_opera && !is_opera2 && !is_opera3 && !is_opera4 && !is_opera5 && !is_opera6 && !is_opera7 && !is_opera8 && !is_opera9);

// Note: On IE, start of appVersion return 3 or 4 which supposedly is the version of Netscape it is compatible with.
// So we look for the real version further on in the string, and on Mac IE5+ we look for is_minor in the UA since 
// it appears to be more accurate than appVersion
var is_mac = (agt.indexOf("mac") != -1);
var is_iemobile = (agt.indexOf("iemobile") != -1);
var iePos = appVer.indexOf('msie');
if (iePos != -1)
{
	if (is_mac)
	{
		iePos = agt.indexOf('msie');
		is_minor = parseFloat(agt.substring(iePos + 5, agt.indexOf(';', iePos)));
	}
	else
		is_minor = parseFloat(appVer.substring(iePos + 5, appVer.indexOf(';', iePos)));
	
	is_major = parseInt(is_minor);
}

// ditto Konqueror
var is_konq = false;
var kqPos = agt.indexOf('konqueror');
if (kqPos != -1)
{
	is_konq = true;
	is_minor = parseFloat(agt.substring(kqPos + 10, agt.indexOf(';', kqPos)));
	is_major = parseInt(is_minor);
}                                 

var is_getElementById = (document.getElementById) ? true : false;
var is_getElementsByTagName = (document.getElementsByTagName) ? true : false;
var is_documentElement = (document.documentElement) ? true : false;

var is_safari = (agt.indexOf('safari') != -1) ? true : false;
if (is_safari && !is_konq)
{
	var safariPos = agt.indexOf('version/');
	is_minor = parseFloat(agt.substring(safariPos + 8, agt.indexOf(' ', safariPos)));
	is_major = parseInt(is_minor);
}

var is_khtml = (is_safari || is_konq);

var is_gecko = ((navigator.product) && (navigator.product.toLowerCase() == "gecko")) ? true : false;
var is_gver = 0;
if (is_gecko)
	is_gver = navigator.productSub;

var is_fb = ((agt.indexOf('mozilla/5') != -1) && (agt.indexOf('spoofer') == -1) && (agt.indexOf('compatible') == -1) && (agt.indexOf('opera') == -1) && (agt.indexOf('webtv') == -1) && (agt.indexOf('hotjava') == -1) && (is_gecko) && (navigator.vendor == "Firebird"));
var is_fx = ((agt.indexOf('mozilla/5') != -1) && (agt.indexOf('spoofer') == -1) && (agt.indexOf('compatible') == -1) && (agt.indexOf('opera') == -1) && (agt.indexOf('webtv') == -1) && (agt.indexOf('hotjava') == -1) && (is_gecko) && ((navigator.vendor == "Firefox") || (agt.indexOf('firefox') != -1)));
var is_moz = ((agt.indexOf('mozilla/5') != -1) && (agt.indexOf('spoofer') == -1) && (agt.indexOf('compatible') == -1) && (agt.indexOf('opera') == -1) && (agt.indexOf('webtv') == -1) && (agt.indexOf('hotjava') == -1) && (is_gecko) && (!is_fb) && (!is_fx) && ((navigator.vendor == "") || (navigator.vendor == "Mozilla") || (navigator.vendor == "Debian")));
if ((is_moz) || (is_fb) || (is_fx))
{
	var is_moz_ver = (navigator.vendorSub) ? navigator.vendorSub : 0;
	if (is_fx && !is_moz_ver)
	{
		is_moz_ver = agt.indexOf('firefox/');
		is_moz_ver = agt.substring(is_moz_ver + 8);
		is_moz_ver = parseFloat(is_moz_ver);
	}
	
	if (!(is_moz_ver))
	{
		is_moz_ver = agt.indexOf('rv:');
		is_moz_ver = agt.substring(is_moz_ver + 3);
		is_paren = is_moz_ver.indexOf(')');
		is_moz_ver = is_moz_ver.substring(0, is_paren);
	}
	
	is_minor = is_moz_ver;
	is_major = parseInt(is_moz_ver);
}
var is_fb_ver = is_moz_ver;
var is_fx_ver = is_moz_ver;

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) && (!is_khtml) && (!(is_moz)) && (!is_fb) && (!is_fx));

// Netscape6 is mozilla/5 + Netscape6/6.0
// Mozilla/5.0 (Windows; U; Win98; en-US; m18) Gecko/20001108 Netscape6/6.0
if ((navigator.vendor) && ((navigator.vendor == "Netscape6") || (navigator.vendor == "Netscape")) && (is_nav))
{
	is_major = parseInt(navigator.vendorSub);
	
	// here we need is_minor as a valid float for testing. We'll revert to the actual content before printing the result
	is_minor = parseFloat(navigator.vendorSub);
}

// Google Chrome (based on WebKit/Gecko)
var is_chrome = (is_gecko && (navigator.vendor.indexOf('Google') != -1) && (agt.indexOf('chrome/') != -1));
if (is_chrome)
{
	var chromePos = agt.indexOf('chrome/');
	var chrome_ver = agt.substring(chromePos + 7, agt.indexOf(' ', chromePos));
	is_minor = parseFloat(chrome_ver);
	is_major = parseInt(chrome_ver);
	is_safari = false;
}

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_minor >= 4);
var is_navonly = (is_nav && ((agt.indexOf(";nav") != -1) || (agt.indexOf("; nav") != -1)));
var is_nav6 = (is_nav && is_major == 6); 
var is_nav6up = (is_nav && is_minor >= 6);
var is_nav5 = (is_nav && is_major == 5 && !is_nav6); // Checked for ns6
var is_nav5up = (is_nav && is_minor >= 5);
var is_nav7 = (is_nav && is_major == 7);
var is_nav7up = (is_nav && is_minor >= 7);
var is_nav8 = (is_nav && is_major == 8);
var is_nav8up = (is_nav && is_minor >= 8);
var is_nav9 = (is_nav && is_major == 9);
var is_nav9up = (is_nav && is_minor >= 9);

var is_fx2 = (is_fx && is_major == 2);
var is_fx2up = (is_fx && is_minor >= 2);
var is_fx3 = (is_fx && is_major == 3);
var is_fx3up = (is_fx && is_minor >= 3);
var is_fx4 = (is_fx && is_major == 4);
var is_fx4up = (is_fx && is_minor >= 4);

var is_chrome1 = (is_chrome && is_major == 1);
var is_chrome1up = (is_chrome && is_minor >= 1);
var is_chrome2 = (is_chrome && is_major == 2);
var is_chrome2up = (is_chrome && is_minor >= 2);
var is_chrome3 = (is_chrome && is_major == 3);
var is_chrome3up = (is_chrome && is_minor >= 3);
var is_chrome4 = (is_chrome && is_major == 4);
var is_chrome4up = (is_chrome && is_minor >= 4);
var is_chrome5 = (is_chrome && is_major == 5);
var is_chrome5up = (is_chrome && is_minor >= 5);
var is_chrome6 = (is_chrome && is_major == 6);
var is_chrome6up = (is_chrome && is_minor >= 6);
var is_chrome7 = (is_chrome && is_major == 7);
var is_chrome7up = (is_chrome && is_minor >= 7);
var is_chrome8 = (is_chrome && is_major == 8);
var is_chrome8up = (is_chrome && is_minor >= 8);
var is_chrome9 = (is_chrome && is_major == 9);
var is_chrome9up = (is_chrome && is_minor >= 9);
var is_chrome10 = (is_chrome && is_major == 10);
var is_chrome10up = (is_chrome && is_minor >= 10);
var is_chrome11 = (is_chrome && is_major == 11);
var is_chrome11up = (is_chrome && is_minor >= 11);
var is_chrome12 = (is_chrome && is_major == 12);
var is_chrome12up = (is_chrome && is_minor >= 12);
var is_chrome13 = (is_chrome && is_major == 13);
var is_chrome13up = (is_chrome && is_minor >= 13);
var is_chrome14 = (is_chrome && is_major == 14);
var is_chrome14up = (is_chrome && is_minor >= 14);
var is_chrome15 = (is_chrome && is_major == 15);
var is_chrome15up = (is_chrome && is_minor >= 15);

var is_safari2 = (is_safari && is_major == 2);
var is_safari2up = (is_safari && is_minor >= 2);
var is_safari3 = (is_safari && is_major == 3);
var is_safari3up = (is_safari && is_minor >= 3);
var is_safari4 = (is_safari && is_major == 4);
var is_safari4up = (is_safari && is_minor >= 4);
var is_safari5 = (is_safari && is_major == 5);
var is_safari5up = (is_safari && is_minor >= 5);

var is_ie = ((iePos!= -1) && (!is_opera) && (!is_khtml));
var is_ie3 = (is_ie && (is_major < 4));
var is_ie4 = (is_ie && is_major == 4);
var is_ie4up = (is_ie && is_minor >= 4);
var is_ie5 = (is_ie && is_major == 5);
var is_ie5up = (is_ie && is_minor >= 5);
var is_ie5_5 = (is_ie && (agt.indexOf("msie 5.5") != -1));
var is_ie5_5up = (is_ie && is_minor >= 5.5);
var is_ie6 = (is_ie && is_major == 6);
var is_ie6up = (is_ie && is_minor >= 6);
var is_ie7 = (is_ie && is_major == 7);
var is_ie7up = (is_ie && is_minor >= 7);
var is_ie8 = (is_ie && is_major == 8);
var is_ie8up = (is_ie && is_minor >= 8);
var is_ie9 = (is_ie && is_major == 9);
var is_ie9up = (is_ie && is_minor >= 9);
var is_ie10 = (is_ie && is_major == 10);
var is_ie10up = (is_ie && is_minor >= 10);

// 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_aol7 = ((agt.indexOf("aol 7") != -1) || (agt.indexOf("aol7") != -1));
var is_aol8 = ((agt.indexOf("aol 8") != -1) || (agt.indexOf("aol8") != -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 ***
// Useful to workaround Nav3 bug in which Nav3 loads <SCRIPT LANGUAGE = "JavaScript1.2">
var is_js;
if (is_nav2 || is_ie3)
	is_js = 1.0;
else if (is_nav3)
	is_js = 1.1;
else if ((is_opera5) || (is_opera6))
	is_js = 1.3;
else if (is_opera7up)
	is_js = 1.5;
else if (is_khtml)
	is_js = 1.5;
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_nav5 && !(is_nav6))
	is_js = 1.4;
else if (is_hotjava3up)
	is_js = 1.4;
else if (is_nav6up)
	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_nav && (is_major > 5))
	is_js = 1.4;
else if (is_ie && (is_major > 5))
	is_js = 1.3;
else if (is_moz)
	is_js = 1.5;
else if (is_fb || is_fx)
	is_js = 1.5;
else
	is_js = 0.0;
// HACK FOR IE5 MAC = js vers = 1.4
if ((agt.indexOf("mac") != -1) && is_ie5up)
	is_js = 1.4;
// Done with is_minor testing; revert to real for N6/7
if (is_nav6up)
	is_minor = navigator.vendorSub;

// *** 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));
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) || (agt.indexOf("windows 2000") != -1));
var is_winxp = ((agt.indexOf("windows nt 5.1") != -1) || (agt.indexOf("windows xp") != -1));
var is_win2k3 = ((agt.indexOf("windows nt 5.2") != -1) || (agt.indexOf("windows 2003") != -1));
var is_winvista = ((agt.indexOf("windows nt 6.0") != -1) || (agt.indexOf("windows vista") != -1));
var is_win7 = ((agt.indexOf("windows nt 6.1") != -1) || (agt.indexOf("windows 7") != -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_winX64 = (agt.indexOf("wow64") != -1);
var is_wince = (agt.indexOf("windows ce") != -1);
var is_winmediacenter = ((is_win) && (agt.indexOf("media center pc") != -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);
var is_macintel = (agt.indexOf("intel mac") != -1);
if (is_macintel)
	is_win = is_macintel;
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_macosx = (is_mac && (agt.indexOf("os x") != -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);
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);
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));

var is_anchors = (document.anchors) ? true : false;
var is_regexp = (window.RegExp) ? true : false;
var is_option = (window.Option) ? true : false;
var is_all = (document.all) ? true : false;
var is_cookie = (document.cookieEnabled) ? true : false;
var is_images = (document.images) ? true : false;
var is_layers = (document.layers) ? true : false;
var is_forms = (document.forms) ? true : false;
var is_links = (document.links) ? true : false;
var is_frames = (window.frames) ? true : false;
var is_screen = (window.screen) ? true : false;
var is_java = (navigator.javaEnabled());

// Microsoft .NET CLR checking
var is_dotnet11 = (agt.indexOf(".net clr 1.1") != -1);
var is_dotnet20 = (agt.indexOf(".net clr 2.0") != -1);
var is_dotnet30 = (agt.indexOf(".net clr 3.0") != -1);
var is_dotnet35 = (agt.indexOf(".net clr 3.5") != -1);

// Flash checking code adapted from Doc JavaScript information - see http://webref.com/js/column84/2.html
var is_Flash = false;
var is_FlashVersion = 0;
if ((is_nav || is_opera || is_moz || is_fb || is_fx || is_safari) || (is_mac && is_ie5up))
{
	var plugin = (navigator.mimeTypes && navigator.mimeTypes["application/x-shockwave-flash"] && navigator.mimeTypes["application/x-shockwave-flash"].enabledPlugin) ? navigator.mimeTypes["application/x-shockwave-flash"].enabledPlugin : 0;
	if (plugin && plugin.description)
	{
		is_Flash = true;
		is_FlashVersion = parseInt(plugin.description.substring(plugin.description.indexOf(".") - 1));
	}
}