// Ultimate client-side JavaScript client sniff.

// (C) Netscape Communications 1998. Permission granted to reuse and distribute.

// Everything you always wanted to know about your JavaScript client

// but were afraid to ask ... "Is" is the constructor function for "is" object, // which has properties indicating

// var is = new Is()

// (1) browser vendor =

// is.nav, is.ie, is.opera

// (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.ie3, is.ie4

// (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.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


function Is()
{
			// convert all characters to lowercase to simplify testing

			var agt=navigator.userAgent.toLowerCase();

			// *** BROWSER VERSION ***

			this.major = parseInt(navigator.appVersion);

			this.minor = parseFloat(navigator.appVersion);

			this.nav = ((agt.indexOf('mozilla')!=-1) && ((agt.indexOf('spoofer')==-1) && (agt.indexOf('compatible') == -1)));

			this.nav2 = (this.nav && (this.major == 2));

			this.nav3 = (this.nav && (this.major == 3));

			this.nav4 = (this.nav && (this.major == 4));

			this.navonly = (this.nav && (agt.indexOf(";nav") != -1));

			this.ie = (agt.indexOf("msie") != -1);

			this.ie3 = (this.ie && (this.major == 2));

			this.ie4 = (this.ie && (this.major == 4));

			this.opera = (agt.indexOf("opera") != -1);


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

			if (this.nav2 || this.ie3) this.js = 1.0;

			else if (this.nav3 || this.opera) this.js = 1.1;

			else if (this.nav4 || this.ie4) this.js = 1.2;

			// 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 1.2 capable. Always check for JS version compatibility // with > or >=.

			else if ((this.nav && (this.minor > 4.05)) || (this.ie && (this.major > 4))) this.js = 1.2;

			else this.js = 0.0 // HACK = always check for JS version with > or >=

			// *** PLATFORM ***

			this.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.

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

			// is this a 16 bit compiled version?

			this.win16 = ((agt.indexOf("win16")!=-1) || (agt.indexOf("16bit")!=-1) || (agt.indexOf("windows 3.1")!=-1) || (agt.indexOf("windows 16-bit")!=-1) );

			this.win31 = (agt.indexOf("windows 3.1")!=-1) || (agt.indexOf("win16")!=-1) ||

			(agt.indexOf("windows 16-bit")!=-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".

			this.win98 = ((agt.indexOf("win98")!=-1)||(agt.indexOf("windows 98")!=-1));

			this.winnt = ((agt.indexOf("winnt")!=-1)||(agt.indexOf("windows nt")!=-1));

			this.win32 = this.win95 || this.winnt || this.win98 || ((this.major >= 4) && (navigator.platform == "Win32")) ||

			(agt.indexOf("win32")!=-1) || (agt.indexOf("32bit")!=-1);

			this.os2 = (agt.indexOf("os/2")!=-1) || (navigator.appVersion.indexOf("OS/2")!=-1) || (agt.indexOf("ibm-webexplorer")!=-1);

			this.mac = (agt.indexOf("mac")!=-1);

			this.mac68k = this.mac && ((agt.indexOf("68k")!=-1) || (agt.indexOf("68000")!=-1));

			this.macppc = this.mac && ((agt.indexOf("ppc")!=-1) || (agt.indexOf("powerpc")!=-1));

			this.sun = (agt.indexOf("sunos")!=-1);

			this.sun4 = (agt.indexOf("sunos 4")!=-1);

			this.sun5 = (agt.indexOf("sunos 5")!=-1);

			this.suni86= this.sun && (agt.indexOf("i86")!=-1);

			this.irix = (agt.indexOf("irix") !=-1); // SGI

			this.irix5 = (agt.indexOf("irix 5") !=-1);

			this.irix6 = ((agt.indexOf("irix 6") !=-1) || (agt.indexOf("irix6") !=-1));

			this.hpux = (agt.indexOf("hp-ux")!=-1);

			this.hpux9 = this.hpux && (agt.indexOf("09.")!=-1);

			this.hpux10= this.hpux && (agt.indexOf("10.")!=-1);

			this.aix = (agt.indexOf("aix") !=-1); // IBM

			this.aix1 = (agt.indexOf("aix 1") !=-1);

			this.aix2 = (agt.indexOf("aix 2") !=-1);

			this.aix3 = (agt.indexOf("aix 3") !=-1);

			this.aix4 = (agt.indexOf("aix 4") !=-1);

			this.linux = (agt.indexOf("inux")!=-1);

			this.sco = (agt.indexOf("sco")!=-1) || (agt.indexOf("unix_sv")!=-1);

			this.unixware = (agt.indexOf("unix_system_v")!=-1);

			this.mpras = (agt.indexOf("ncr")!=-1);

			this.reliant = (agt.indexOf("reliantunix")!=-1);

			this.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);

			this.sinix = (agt.indexOf("sinix")!=-1);

			this.freebsd = (agt.indexOf("freebsd")!=-1);

			this.bsd = (agt.indexOf("bsd")!=-1);

			this.unix = (agt.indexOf("x11")!=-1) || this.sun || this.irix || this.hpux || this.sco ||this.unixware || this.mpras || this.reliant || this.dec || this.sinix || this.aix || this.linux || this.freebsd;

			this.vms = (agt.indexOf("vax")!=-1) || (agt.indexOf("openvms")!=-1);
}