// Creates "is_" variables indicating:

// (1) browser vendor:

//     is_nav, is_ie, is_opera, is_hotjava, is_webtv, is_TVNavigator, is_AOLTV

// (2) browser version number:

//     is_major (integer indicating major version number: 2, 3, 4 ...)

//     is_minor (float   indicating full  version number: 2.02, 3.01, 4.04 ...)

// (3) browser vendor AND major version number

//     is_nav2, is_nav3, is_nav4, is_nav4up, is_nav6, is_nav6up, is_gecko, is_ie3,

//     is_ie4, is_ie4up, is_ie5, is_ie5up, is_ie5_5, is_ie5_5up, is_ie6, is_ie6up, is_hotjava3, is_hotjava3up,

//     is_opera2, is_opera3, is_opera4, is_opera5, is_opera5up

// (4) JavaScript version number:

//     is_js (float indicating full JavaScript version number: 1, 1.1, 1.2 ...)

// (5) OS platform and version:

//     is_win, is_win16, is_win32, is_win31, is_win95, is_winnt, is_win98, is_winme, is_win2k

//     is_os2

//     is_mac, is_mac68k, is_macppc

//     is_unix

//     is_sun, is_sun4, is_sun5, is_suni86

//     is_irix, is_irix5, is_irix6

//     is_hpux, is_hpux9, is_hpux10

//     is_aix, is_aix1, is_aix2, is_aix3, is_aix4

//     is_linux, is_sco, is_unixware, is_mpras, is_reliant

//     is_dec, is_sinix, is_freebsd, is_bsd

//     is_vms

//

// See	http://www.it97.de/JavaScript/JS_tutorial/bstat/navobj.html and

//			http://www.it97.de/JavaScript/JS_tutorial/bstat/Browseraol.html

// for detailed lists of userAgent strings.

//

// Note:	In conditional code forks, use--

//					is_ie5up ("IE 5.0 or greater") instead of       is_ie5

//					is_opera5up ("Opera 5.0 or greater") instead of is_opera5

//				if you want your code to work with future versions.



	// 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 && (is_major == 5));

	var is_nav6up				= (is_nav && (is_major >= 5));

	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 are not 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_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_win2000			= ((agt.indexOf("win2000")!=-1) || (agt.indexOf("windows 2000")!=-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));



//--> end hide JavaScript