// JavaScript Browser Sniffer
// see http://www.webreference.com/ for more information
// 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); // new 020128- abk
var is_opera7 = (agt.indexOf("opera 7") != -1 || agt.indexOf("opera/7") != -1); // new 021205- dmr
var is_opera5up = (is_opera && !is_opera2 && !is_opera3 && !is_opera4);
var is_opera6up = (is_opera && !is_opera2 && !is_opera3 && !is_opera4 && !is_opera5); // new020128
var is_opera7up = (is_opera && !is_opera2 && !is_opera3 && !is_opera4 && !is_opera5 && !is_opera6); // new021205 -- dmr

// 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

var iePos  = appVer.indexOf('msie');

if (iePos != -1) {
   is_minor = parseFloat(appVer.substring(iePos+5,appVer.indexOf(';' ,iePos)));
   is_major = parseInt(is_minor);
}

var is_getElementById   = (document.getElementById) ? "true" : "false"; // 001121-abk
var is_getElementsByTagName = (document.getElementsByTagName) ? "true" : "false"; // 001127-abk
var is_documentElement = (document.documentElement) ? "true" : "false"; // 001121-abk

var is_safari = ((agt.indexOf('safari')!=-1)&&(agt.indexOf('mac')!=-1))?true:false;

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

if (is_gecko)
	is_gver = navigator.productSub;

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) && ((navigator.vendor=="") || (navigator.vendor=="Mozilla")));
    
if (is_moz) {       
   var is_moz_ver = (navigator.vendorSub)?navigator.vendorSub:0;
   if (!(is_moz_ver)) {
	   is_moz_ver = agt.indexOf('rv:');
	   is_moz_ver = agt.substring(is_moz_ver + 3);
	   //is_moz_ver = parseInt(agt.substring(agt.indexOf('rv:') + 3, agt.indexOf(')'))) + 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) + 4;
}

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_safari) && (!(is_moz)));

// Netscape6 is mozilla/5 + Netscape6/6.0!!!
// Mozilla/5.0 (Windows; U; Win98; en-US; m18) Gecko/20001108 Netscape6/6.0
// Changed this to use navigator.vendor/vendorSub - dmr 060502   
// var nav6Pos = agt.indexOf('netscape6');
// if (nav6Pos !=-1) {

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);
}

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); // new 020128- abk
var is_opera7 = (agt.indexOf("opera 7") != -1 || agt.indexOf("opera/7") != -1); // new 021205- dmr
var is_opera5up = (is_opera && !is_opera2 && !is_opera3 && !is_opera4);
var is_opera6up = (is_opera && !is_opera2 && !is_opera3 && !is_opera4 && !is_opera5); // new020128
var is_opera7up = (is_opera && !is_opera2 && !is_opera3 && !is_opera4 && !is_opera5 && !is_opera6); // new021205 -- dmr

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);  

// changed to is_minor for
// consistency - dmr, 011001

var is_navonly = (is_nav && ((agt.indexOf(";nav") != -1) ||
	(agt.indexOf("; nav") != -1)) );

var is_nav6   = (is_nav && is_major == 6); // new 010118 mhp
var is_nav6up = (is_nav && is_minor >= 6) // new 010118 mhp

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_ie   = ((iePos!=-1) && (!is_opera) && (!is_safari));
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)); // 020128 new - abk
var is_ie5_5up =(is_ie && is_minor >= 5.5); // 020128 new - abk

var is_ie6   = (is_ie && is_major == 6);
var is_ie6up = (is_ie && is_minor >= 6);

// 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);

// new 020128 - abk

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));

// end new

// *** JAVASCRIPT VERSION CHECK ***
// Useful to workaround Nav3 bug in which Nav3
// loads <SCRIPT LANGUAGE="JavaScript1.2">.
// updated 020131 by dragle

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; // 020214 - dmr
else if (is_opera7up)
	is_js = 1.5; // 031010 - dmr
else if (is_safari) 
	is_js = 1.5;   // 030110 - dmr
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; // new 020128 - abk
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;
    
// what about ie6 and ie6up for js version? abk
// HACK: no idea for other browsers; always check for JS version 
// with > or >=
else 
	is_js = 0.0;

// HACK FOR IE5 MAC = js vers = 1.4 (if put inside if/else jumps out at 1.3)
if ((agt.indexOf("mac") != -1) && is_ie5up) 
	is_js = 1.4; // 020128 - abk

// 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));

// 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)); // new 020128 - abk
var is_win2k = ((agt.indexOf("windows nt 5.0")!=-1) || (agt.indexOf("windows 2000")!=-1)); // 020214 - dmr
var is_winxp = ((agt.indexOf("windows nt 5.1")!=-1) || (agt.indexOf("windows xp")!=-1)); // 020214 - dmr

// 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);
if (is_mac)
	is_win = !is_mac; // dmr - 06/20/2002
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));

// additional checks, abk
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";

// cookies - 990624 - abk
document.cookie = "cookies=true";
var is_cookie = (document.cookie) ? "true" : "false";
var is_images = (document.images) ? "true":"false";
var is_layers = (document.layers) ? "true":"false"; // gecko m7 bug?

// new doc obj tests 990624-abk
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";

// java
var is_java = (navigator.javaEnabled());

// Flash checking code based 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_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) {
		is_Flash = true;
		is_FlashVersion = parseInt(plugin.description.substring(plugin.description.indexOf(".")-1));
	}
}
   
if (is_win&&is_ie4up) {
	document.write(
		'<scr' + 'ipt language=VBScript>' + '\n' +
		'Dim hasPlayer, playerversion' + '\n' +
		'hasPlayer = false' + '\n' +
		'playerversion = 10' + '\n' +
		'Do While playerversion > 0' + '\n' +
		'On Error Resume Next' + '\n' +
		'hasPlayer = (IsObject(CreateObject("ShockwaveFlash.ShockwaveFlash." & playerversion)))' + '\n' +
		'If hasPlayer = true Then Exit Do' + '\n' +
		'playerversion = playerversion - 1' + '\n' +
		'Loop' + '\n' +
		'is_FlashVersion = playerversion' + '\n' +
		'is_Flash = hasPlayer' + '\n' +
		'<\/sc' + 'ript>');
}