// UltimateClientSniffer.js
// ------------------------
// From: http://www.mozilla.org/docs/web-developer/sniffer/browser_type.html
//       http://www.webreference.com/tools/browser/javascript.html

// Ultimate client-side JavaScript client sniff. Version 3.03
// (C) Netscape Communications 1999.  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
//


// VisiBone revisions:
//
// Revised 01 Jun 02 add is_moz and is_netsc (is_nav is still their union)
//                   winxp, etc. graftings from webreference.com:
//                   http://www.webreference.com/tools/browser/javascript.html
//         12 Jun 02 add is_ie4x
//         ??           grafted in Safari and Konqueror support
//         02 Mar 05 added is_fb, is_fx (Firefox), is_nav7
//         18 Aug 08 fixed is_fx, is_fx_ver, is_opera6dn,9up,etc., is_ie7,8[up]



// Everything you always wanted to know about your JavaScript client
// but were afraid to ask. 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_0, is_ie5_1, 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, is_aol3, is_aol4, is_aol5, is_aol6
// (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.  (Those pages are gone!)
//
// Note: you don't want your Nav4 or IE4 code to "turn off" or
// stop working when new versions of browsers are released, so
// in conditional code forks, use is_ie5up ("IE 5.0 or greater") 
// is_opera5up ("Opera 5.0 or greater") instead of is_ie5 or is_opera5
// to check version in code which you want to work on future
// versions.



// bver(key1 [,key2] ) -- extract version number after token
function bver(key1,key2) { 
	var agt=navigator.userAgent.toLowerCase();
	var idx=agt.indexOf(key1);
	if (idx == -1) {
		idx=agt.indexOf(key2);
		if (idx == -1) {
			return "???";
		}
		else {
			idx+=key2.length;
		}
	}
	else {
		idx+=key1.length;
	}
	var nver;
	for (nver=0 ; idx+nver < agt.length ; nver++) {
		if ((/[^a-z0-9\.\_\-]/).test(agt.charAt(idx+nver))) {
			break;
		}
	}
	return agt.substring(idx,idx+nver);
	
// old way follows, will be missed, but IE5 rebuffed it.	
//	if (RegExp(key1+"([\\w\\.]+)").test(navigator.userAgent.toLowerCase())) {
//		return RegExp.$1;
//	}
//	else if (arguments.length >= 2 
//	 && RegExp(key2+"([\\w\\.]+)").test(navigator.userAgent.toLowerCase())) {
//		return RegExp.$1;
//	}
//	else {
//		return "???"
//	}
}



    // 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);

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

    var is_safari_ver;
    if (is_safari) {
        if (/version\/([0-9a-zA-Z.-]+)/.test(agt)) {
            is_safari_ver = RegExp.$1;
        } else {
        	is_safari_ver = '??';
        }
    }

    var is_chrome_ver; // =bver('chrome/');   -- too long -- want 0.3 not 0.3.54.99
    if (is_chrome) {
        if (/chrome\/([0-9]+\.[0-9]+)/.test(agt)) {
            is_chrome_ver = RegExp.$1;
        } else {
        	is_chrome_ver = '??';
        }
    }
    
    var is_sfchrome = is_safari || is_chrome;		// because lots of features are common to both
 
    var is_sfchrome_superver; // e.g. 522.15.5 for Safari Version/3.0.3 on Win2K, 
                              //   or 525.21   for Safari Version/3.1.2 on WinXP, 
                              //   or 525.13   for Chrome/0.2.149.30 on Win2003
    if (is_sfchrome) {
        if (/safari\/([0-9a-zA-Z.-]+)/.test(agt)) {
            is_sfchrome_superver = RegExp.$1;
        } else {
        	is_sfchrome_superver = '??';
        }
    }
    var is_sfchrome523up = is_sfchrome && is_sfchrome_superver >= '523';
    var is_sfchrome522dn = is_sfchrome && is_sfchrome_superver <  '523';
   
    var is_konq  =  ((agt.indexOf("konqueror") != -1));
    var is_khtml  = (is_safari || is_chrome || is_konq);

    var is_gecko = ((!is_khtml)&&(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)     
                 && (agt.indexOf('navigator' )==-1)     // cause Netscape 8 spoofs Firefox 2!
                 && (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)     
                 && (agt.indexOf('navigator' )==-1)     // cause Netscape 8 spoofs Firefox 2!
                 && (is_gecko) 
                 // (navigator.vendor=="Firefox"));  // 2008.0818 culled from webreference.com
                 && ((navigator.vendor=="Firefox")
                         ||(agt.indexOf('firefox')!=-1)
                         ||(agt.indexOf('shiretoko')!=-1)));

				//  var is_moz used to = is_nav6up && (agt.indexOf('netscape') == -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)     
                 && (agt.indexOf('navigator' )==-1)     // cause Netscape 8 spoofs Firefox 2!
                 && (is_gecko) 
                 && (!is_fb) 
                 && (!is_fx)  // 2008.0818 culled from webreference.com
                 && ((navigator.vendor=="")
                   ||(navigator.vendor=="Mozilla")
                   ||(navigator.vendor=="Debian")));

	// is_flock -- Flock 1.2.5 spoofs Firefox 2.0.0.16, and all tests pass that way
	// so I'm not making a separate tag -- because excluding Flock from is_fx would break lots of tests

    if (is_moz||(is_fb)||(is_fx)) {
       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_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;  // 2008.0818 divergent from webreference.com
    if(is_fx) {
        if (/(firefox|shiretoko)\/([0-9a-zA-Z.-]+)/.test(agt)) {
            is_fx_ver = RegExp.$2;
        } else {
        	is_fx_ver = '??';
        }
    }
    is_fx1_    = is_fx && (is_fx_ver <= "1");                     // will break with version "10"
    is_fx2     = is_fx && (is_fx_ver >= "2" && is_fx_ver < "3");  // this will break with version "20.0.0.0"!
    is_fx2up   = is_fx && (is_fx_ver >= "2");
    is_fx3     = is_fx && (is_fx_ver >= "3" && is_fx_ver < "4");  // this will break with version "30.0.0.0"!
    is_fx3up   = is_fx && (is_fx_ver >= "3");
    is_fx2dn   = is_fx && (is_fx_ver <  "3");
    is_fx303up = is_fx && (is_fx_ver >= "3.0.3");				  // break with 3.0.29?
    is_fx31up  = is_fx && (is_fx_ver >= "3.1");					  // break with 3.09?

    var is_ns_ver = bver("netscape/","navigator/");

    // 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.
    // is_gecko is true for Netscape, Mozilla, Firefox, and Firebird and of course others, PROBABLY a superset
    // is_nav and is_moz and is_fb and is_fx and others are mutually exclusive, I think
    var is_nav  = ((agt.indexOf('mozilla'   )!=-1) 
                && (agt.indexOf('spoofer'   )==-1)
                && (agt.indexOf('compatible')==-1) 
                && (agt.indexOf('webtv'     )==-1) 
                && (agt.indexOf('hotjava'   )==-1)
                && (!is_opera) 
                && (!is_konq) 
                && (!is_safari) 
                && (!is_chrome) 
                && (!is_moz) 
                && (!is_fb) 
                && (!is_fx));

    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_nav4_  = (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 && is_ns_ver.charAt(0) == '6');
    var is_nav6up = (is_nav && is_major >= 5 && is_ns_ver.charAt(0) >= '6');

    var is_nav7   = (is_nav && is_major == 5 && is_ns_ver.charAt(0) == '7');
    var is_nav7up = (is_nav && is_minor >= 5 && is_ns_ver.charAt(0) >= '7');

    var is_nav8   = (is_nav && is_major == 5 && is_ns_ver.charAt(0) == '8');
    var is_nav8up = (is_nav && is_minor >= 5 && is_ns_ver.charAt(0) >= '8');
    
    var is_nav9   = (is_nav && is_major == 5 && is_ns_ver.charAt(0) == '9');
    var is_nav9up = (is_nav && is_minor >= 5 && is_ns_ver.charAt(0) >= '9');


	// is_rv means is_gecko more or less
	// is_rv_version is 0.9 for Netscape 6 and Mozilla 0.9
	// is_rv_version is 1.0 or higher for Netscape 7 and up, Mozilla 1 and up, Firefox1-3, etc.
    var is_rv = (agt.indexOf('rv:') != -1);
    var is_rv_version = is_rv ? parseFloat(agt.substring(agt.indexOf('rv:')+3)) : 0.0;


    // is_netsc is a subset of is_nav
    // (is_nav && !is_netsc) is the catch-all for Netscape-like browsers, I guess
    var is_netsc = 
    	(
    		is_nav6up && (
	    		(agt.indexOf('netscape')  != -1) ||
	    		(agt.indexOf('navigator') != -1)
    		)
    	) || is_nav4_;
    var is_firebird = agt.indexOf('firebird') != -1;
    
    var is_fire = is_firebird || is_fx

	var is_exceptions = (typeof(Error) == "function");
	
    var is_ie     = ((agt.indexOf("msie") != -1) && (agt.indexOf("opera") == -1));
    var is_ie3    = (is_ie && (is_major < 4));
    var is_ie3_   = is_ie3;
    var is_ie4    = (is_ie && (is_major == 4) && (agt.indexOf("msie 4")!=-1) );
    var is_ie4_   = (is_ie3 || is_ie4);
    var is_ie4xtra= (is_ie4 && is_exceptions);
    var is_ie4prextra=(is_ie4_ && !is_ie4xtra);
    var is_ie4up  = (is_ie && (is_major >= 4));
    var is_ie5    = (is_ie && (is_major == 4) && (agt.indexOf("msie 5")!=-1) );
    var is_ie5_0  = (is_ie && (is_major == 4) && (agt.indexOf("msie 5.0")!=-1) );
    var is_ie5_0_ = (is_ie3 || is_ie4 || is_ie5_0)
    var is_ie5_1  = (is_ie && (is_major == 4) && (agt.indexOf("msie 5.1") !=-1));
    var is_ie5_1_ = (is_ie3 || is_ie4 || is_ie5_0 || is_ie5_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_0 && !is_ie5_1);
    var is_ie6    = (is_ie && (is_major == 4) && (agt.indexOf("msie 6.")!=-1) );
    var is_ie6up  = (is_ie && !is_ie3 && !is_ie4 && !is_ie5_0 && !is_ie5_1 && !is_ie5_5);
    var is_ie6dn  = (is_ie && (is_ie3 ||  is_ie4 ||  is_ie5_0 ||  is_ie5_1 ||  is_ie5_5 ||  is_ie6));
    var is_ie7    = (is_ie && (is_major == 4) && (agt.indexOf("msie 7.")!=-1) );
    var is_ie7up  = (is_ie && !is_ie3 && !is_ie4 && !is_ie5_0 && !is_ie5_1 && !is_ie5_5 && !is_ie6);
    var is_ie7dn  = (is_ie && (is_ie3 ||  is_ie4 ||  is_ie5_0 ||  is_ie5_1 ||  is_ie5_5 ||  is_ie6 ||  is_ie7));
    var is_ie8    = (is_ie && (is_major == 4) && (agt.indexOf("msie 8.")!=-1) );
    var is_ie8up  = (is_ie && !is_ie3 && !is_ie4 && !is_ie5_0 && !is_ie5_1 && !is_ie5_5 && !is_ie6 && !is_ie7);
    
    var is_ie8emu7 = is_ie7 && (typeof(window.constructor) == 'object')		// twisted, evil, depraved
    var is_ie8emu7up = is_ie8emu7 || is_ie8up;   // IE8 emulating 7 belies its true identity in a few ways

    // 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_opera_ver = is_opera ? bver("opera ","opera/") : "";

    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_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_opera96up = is_opera9up && is_opera_ver >= "9.6";
    
    var is_opera6dn = (is_opera && (is_opera2 ||  is_opera3 ||  is_opera4 ||  is_opera5 ||  is_opera6));
    var is_opera7dn = (is_opera && (is_opera2 ||  is_opera3 ||  is_opera4 ||  is_opera5 ||  is_opera6 ||  is_opera7));
    var is_opera8dn = (is_opera && (is_opera2 ||  is_opera3 ||  is_opera4 ||  is_opera5 ||  is_opera6 ||  is_opera7 ||  is_opera8));
    var is_opera9dn = (is_opera && (is_opera2 ||  is_opera3 ||  is_opera4 ||  is_opera5 ||  is_opera6 ||  is_opera7 ||  is_opera8 ||  is_opera9));
	var is_opera95dn = is_opera9dn && is_opera_ver < "9.6";
	
    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));
    
    
    var is_omni  =  ((agt.indexOf("omniweb") != -1));


    // *** 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_0) 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) || (agt.indexOf("windows 2000")!=-1)); // 020214 - dmr
    var is_winxp = ((agt.indexOf("windows nt 5.1")!=-1) || (agt.indexOf("windows xp")!=-1)); // 020214 - dmr
  var is_win2003 = ((agt.indexOf("windows nt 5.2")!=-1) || (agt.indexOf("windows 2003")!=-1)); // 100308 http://lab.amanwithapencil.com/user_agent/
 var is_winvista = ((agt.indexOf("windows nt 6"  )!=-1) || (agt.indexOf("windows vista")!=-1)); // 100308 http://lab.amanwithapencil.com/user_agent/

    // 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
    // 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));

function whoami() {
	var browser,version,os;
	     if (is_netsc) { browser="Netscape";        version=is_ns_ver; }
	else if (is_moz)   { browser="Mozilla";         version=bver("rv:"); }
	else if (is_nav)   { browser="Unknown Mozilla"; version=bver("mozilla/"); }
	else if (is_aol)   { browser="AOL";				version=bver("aol "); }
	else if (is_ie)    { browser="IE";              version=bver("msie "); }
	else if (is_opera) { browser="Opera";	        version=is_opera_ver; }
	else if (is_konq)  { browser="Konqueror";       version=bver("konqueror/"); }
	else if (is_omni)  { browser="OmniWeb";         version=bver("omniweb//"); }
	else if (is_webtv) { browser="WebTV";           version=""; }
	else if (is_safari){ browser="Safari";          version=is_safari_ver; }
	else if (is_chrome){ browser="Chrome";          version=is_chrome_ver; }
	else if (is_fx)    { browser="Firefox";         version=is_fx_ver; }
	else if (is_fb)    { browser="Firebird";        version=is_fb_ver; }
	else if (is_gecko) { browser="Gecko";           version=is_gver; }
	else               { browser="Unfamiliar";      version=""; }

	     if (is_ie5_5) version="5.5";
	//else if (is_nav6)  version="6";
	//if (is_netsc && is_rv) {
	//	version+="rv"+is_rv_version.toString();
	//}
	
	     if (is_win31)    os="Windows 3.1";
	else if (is_win95)    os="Windows 95";
	else if (is_win98)    os="Windows 98";
	else if (is_win2k)    os="Windows 2000";
	else if (is_winme)    os="Windows ME";
	else if (is_winxp)    os="Windows XP";            // must come before is_winnt check
	else if (is_win2003)  os="Windows 2003orXPPro64"; // must come before is_winnt check - http://nlplab.kaist.ac.kr/~jwchoi/coreonto_data/cynah/Computer_networking_Annotation/Network-related_software/Clients/User_agent.txt
	else if (is_winvista) os="Windows Vista";         // must come before is_winnt check
	else if (is_winnt)    os="Windows NT";
	else if (is_win32)    os="Windows 32-bit";
	else if (is_win16)    os="Windows 16-bit";
	else if (is_win)      os="Windows";
	else if (is_mac)      os="Mac";
	else if (is_linux)    os="Linux";
	else if (is_sun)      os="Sun";
	else if (is_unix)     os="Unix";
	else                  os="Other";
	return browser+" "+version+" / "+os;
}