//
// JavaScript Browser Sniffer
// Eric Krok, Andy King, Michel Plungjan Jan. 31, 2002
// see http://www.webreference.com/ for more information
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
//  (at your option) any later version.
//
// please send any improvements to aking@internet.com and we'll
// roll the best ones in
//
// 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
// (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_nav5, is_nav5up, 
//     is_nav6, is_nav6up, is_ie3, is_ie4, is_ie4up, is_ie5up, is_ie6...
// (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
//
// based in part on 
// http://www.mozilla.org/docs/web-developer/sniffer/browser_type.html
// The Ultimate JavaScript Client Sniffer
// and Andy King's object detection sniffer
//
// Note: you don't want your Nav4 or IE4 code to "turn off" or
// stop working when Nav5 and IE5 (or later) are released, so
// in conditional code forks, use is_nav4up ("Nav4 or greater")
// and is_ie4up ("IE4 or greater") instead of is_nav4 or is_ie4
// to check version in code which you want to work on future
// versions. For DOM tests scripters commonly used the 
// is_getElementById test, but make sure you test your code as
// filter non-compliant browsers (Opera 5-6 for example) as some 
// browsers return true for this test, and don't fully support
// the W3C's DOM1.
//

    // 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
    // And on Mac IE5+, we look for is_minor in the ua; since 
    // it appears to be more accurate than appVersion - 06/17/2004

    var is_mac = (agt.indexOf("mac")!=-1);
    var iePos  = appVer.indexOf('msie');
    if (iePos !=-1) {
       if(is_mac) {
           var 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"; // 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_khtml  = (is_safari || 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_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")||(navigator.vendor=="Debian")));
    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"));
    if ((is_moz)||(is_fb)||(is_fx)) {  // 032504 - dmr
       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;

    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
    // 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_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_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)); // 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_khtml) 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;
    else if (is_fb||is_fx) is_js = 1.5; // 032504 - dmr
    
    // what about ie6 and ie6up for js version? abk
    
    // lways 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;
    }

    
// 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());



// -->


function whichBrowser() {
var agt=navigator.userAgent.toLowerCase();
if (agt.indexOf("opera") != -1) return 'Opera';
if (agt.indexOf("staroffice") != -1) return 'Star Office';
if (agt.indexOf("beonex") != -1) return 'Beonex';
if (agt.indexOf("chimera") != -1) return 'Chimera';
if (agt.indexOf("netpositive") != -1) return 'NetPositive';
if (agt.indexOf("phoenix") != -1) return 'Phoenix';
if (agt.indexOf("firefox") != -1) return 'Firefox';
if (agt.indexOf("safari") != -1) return 'Safari';
if (agt.indexOf("skipstone") != -1) return 'SkipStone';
if (agt.indexOf("msie") != -1) return 'Internet Explorer';
if (agt.indexOf("netscape") != -1) return 'Netscape';
if (agt.indexOf("mozilla/5.0") != -1) return 'Mozilla';
if (agt.indexOf('\/') != -1) {
if (agt.substr(0,agt.indexOf('\/')) != 'mozilla') {
return navigator.userAgent.substr(0,agt.indexOf('\/'));}
else return 'Netscape';} else if (agt.indexOf(' ') != -1)
return navigator.userAgent.substr(0,agt.indexOf(' '));
else return navigator.userAgent;
}



/*
Plugin Detector()

Source: Webmonkey Code Library
(http://www.hotwired.com/webmonkey/javascript/code_library/)

Author: Nadav Savio
Author Email: webmonkey@giantant.com

*/

// this is where we write out the VBScript for MSIE Windows
var WM_startTagFix = '</';
var msie_windows = 0;
if ((navigator.userAgent.indexOf('MSIE') != -1) && (navigator.userAgent.indexOf('Win') != -1)){
  msie_windows = 1;
  document.writeln('<script language="VBscript">');
  document.writeln('\'This will scan for plugins for all versions of Internet Explorer that have a VBscript engine version 2 or greater.');
  document.writeln('\'This includes all versions of IE4 and beyond and some versions of IE 3.');
  document.writeln('Dim WM_detect_through_vb');
  document.writeln('WM_detect_through_vb = 0');
  document.writeln('If ScriptEngineMajorVersion >= 2 then');
  document.writeln('  WM_detect_through_vb = 1');
  document.writeln('End If');
  document.writeln('Function WM_activeXDetect(activeXname)');
  document.writeln('  on error resume next');
  document.writeln('  If ScriptEngineMajorVersion >= 2 then');
  document.writeln('     WM_activeXDetect = False');
  document.writeln('     WM_activeXDetect = IsObject(CreateObject(activeXname))');
  document.writeln('     If (err) then');
  document.writeln('        WM_activeXDetect = False');
  document.writeln('     End If');
  document.writeln('   Else');
  document.writeln('     WM_activeXDetect = False');
  document.writeln('   End If');
  document.writeln('End Function');
  document.writeln(WM_startTagFix+'script>');
}

function WM_pluginDetect(plugindescription, pluginxtension, pluginmime, activeXname){

  //This script block will test all user agents that have a real plug-in array

  //(i.e. Netscape) and set the variables, otherwise it directs the routine

  // to WM_activeXDetect to detect the activeX control.

  

  // First define some variables
  var i,plugin_undetectable=0,detected=0, daPlugin=new Object();


  // Then we check to see if it's an MSIE browser that you can actually

  // check for the plugin in question. 

  if (msie_windows && WM_detect_through_vb){
      plugin_undetectable = 0;
  } else {
      plugin_undetectable = 1;
  }



  // If it has a real plugins or mimetypes array, we look there for the plugin first

  if(navigator.plugins) {
      numPlugins = navigator.plugins.length;
      if (numPlugins > 1) {
	  if (navigator.mimeTypes && navigator.mimeTypes[pluginmime] && navigator.mimeTypes[pluginmime].enabledPlugin && (navigator.mimeTypes[pluginmime].suffixes.indexOf(pluginxtension) != -1)) { // seems like we have it, let's just make sure and check the version (if specified)
	      if ((navigator.appName == 'Netscape') && (navigator.appVersion.indexOf('4.0') != -1)) { // stupid, stupid Netscape can't handle the references to navigator.plugins by number, sooo...
		  for(i in navigator.plugins) {
		      if ((navigator.plugins[i].description.indexOf(plugindescription) != -1) || (i.indexOf(plugindescription) != -1)) { // some versions of quicktime have no description. feh!
			  detected=1;
			  break;
		      }
		  }
	      } else {
		  for (i = 0; i < numPlugins; i++) {
		      daPlugin = navigator.plugins[i];
		      if ((daPlugin.description.indexOf(plugindescription) != -1) || (daPlugin.name.indexOf(plugindescription) != -1)) {
			  detected=1;
			  break;
		      }
		  }
	      }

	      // Mac weirdness
      if (navigator.mimeTypes[pluginmime] == null) {
		  detected = 0;
	      }
	  }
	  return detected;
      } else if((msie_windows == 1) && !plugin_undetectable){
	  return WM_activeXDetect(activeXname);
      } else { 		
	  return 0;
      }
  } else {
      return 0;
  }
}


// this next function just makes it easy to detect the common plugins

function WM_easyDetect(whichPlugin) {

    // this function just makes it easy to do basic plug-in detection without

    // knowing all the mimetypes and activeX names and such
    var isItThere = 0;
    if( (whichPlugin == 'flash') || (whichPlugin == 'Flash') ) {
	isItThere = WM_pluginDetect('Flash', 'swf', 'application/x-shockwave-flash', 'ShockwaveFlash.ShockwaveFlash');
    } else if( (whichPlugin == 'director') || (whichPlugin == 'Director') ) {
	isItThere = WM_pluginDetect('Shockwave', 'dcr', 'application/x-director', 'SWCtl.SWCtl.1');
    } else if( (whichPlugin == 'quicktime') || (whichPlugin == 'Quicktime') || (whichPlugin == 'QuickTime') ) {
	isItThere = WM_pluginDetect('QuickTime', 'mov', 'video/quicktime', '');
    } else if( (whichPlugin == 'realaudio') || (whichPlugin == 'Realaudio') || (whichPlugin == 'RealAudio') ) {
	isItThere = (WM_pluginDetect('RealPlayer', 'rpm', 'audio/x-pn-realaudio-plugin', 'RealPlayer.RealPlayer(tm) ActiveX Control (32-bit)')) || (WM_pluginDetect('RealPlayer', 'rpm', 'audio/x-pn-realaudio-plugin','rmocx.RealPlayer G2 Control')) || (WM_pluginDetect('RealPlayer', 'rpm', 'audio/x-pn-realaudio-plugin','RealPlayer.RealPlayer(tm) ActiveX Control (32-bit)')) || (WM_pluginDetect('RealPlayer', 'rpm', 'audio/x-pn-realaudio-plugin','RealVideo.RealVideo(tm) ActiveX Control (32-bit)'))
    } else {

	alert('You need to tell me which plug-in to look for, like so:\n\n' + '          WM_easyDetect(\'flash\')\n\n' + '          WM_easyDetect(\'director\')\n\n' + '          WM_easyDetect(\'quicktime\')\n\n' + '          WM_easyDetect(\'realaudio\')');
    }
    return isItThere;
}


// -->

// *** 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_khtml) 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;
    else if (is_fb||is_fx) is_js = 1.5; // 032504 - dmr
    
    // 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;
    }


// set up variables for hidden fields on form

var zOS = (navigator.platform);
var zbrowser = (whichBrowser() + (" ") + (navigator.appVersion));
var zflash = ("Flash = ") + (WM_easyDetect('flash'));
var zQT = ("QuickTime = ") + (WM_easyDetect('quicktime'));
var zShockwave = ("Shockwave = ") + (WM_easyDetect('director'));
var zRealPlayer = ("Real Player = ") + (WM_easyDetect('realaudio'))
var zJavaScript = ("Javascript: ") + (is_js);
var zCookies = ("Cookies enabled = ") + (is_cookie);
var zScreenRes = ("Screen Resolution = ") + (screen.width) + " x " + (screen.height);