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   1  <!-- hide JavaScript from non-JavaScript browsers
   2  //
   3  // JavaScript Browser Sniffer
   4  // Eric Krok, Andy King, Michel Plungjan Jan. 31, 2002
   5  // see http://www.webreference.com/ for more information
   6  //
   7  // This program is free software; you can redistribute it and/or modify
   8  // it under the terms of the GNU General Public License as published by
   9  // the Free Software Foundation; either version 2 of the License, or
  10  //  (at your option) any later version.
  11  //
  12  // please send any improvements to aking@internet.com and we'll
  13  // roll the best ones in
  14  //
  15  // adapted from Netscape's Ultimate client-side JavaScript client sniffer
  16  // and andy king's sniffer
  17  // Revised May 7 99 to add is.nav5up and is.ie5up (see below). (see below).
  18  // Revised June 11 99 to add additional props, checks
  19  // Revised June 23 99 added screen props - gecko m6 doesn't support yet - abk
  20  //                    converted to var is_ from is object to work everywhere
  21  // 990624 - added cookie forms links frames checks - abk
  22  // 001031 - ie4 mod 5.0 -> 5. (ie5.5 mididentified - abk)
  23  //          is_ie4 mod tp work with ie6+ - abk
  24  // 001120 - ns6 released, document.layers false, put back in
  25  //        - is_nav6 test added - abk
  26  // 001121 - ns6+ added, used document.getElementById, better test, dom-compl
  27  // 010117 - actual version for ie3-5.5 by Michel Plungjan
  28  // 010118 - actual version for ns6 by Michel Plungjan
  29  // 010217 - netscape 6/mz 6 ie5.5 onload defer bug docs - abk
  30  // 011107 - added is_ie6 and is_ie6up variables - dmr
  31  // 020128 - added link to netscape's sniffer, on which this is based - abk
  32  //          updated sniffer for aol4-6, ie5mac = js1.4, TVNavigator, AOLTV,
  33  //          hotjava
  34  // 020131 - cleaned up links, added more links to example object detection
  35  // 020131 - a couple small problems with Opera detection. First, when Opera
  36  //          is set to be compatible with other browsers it will contain their
  37  //          information in the userAgent strings. Thus, to be sure we have 
  38  //          Opera we should check for it before checking for the other bigs.
  39  //          (And make sure the others are !opera.) Also corrected a minor
  40  //          bug in the is_opera6up assignment.
  41  // 020214 - Added link for Opera/JS compatibility; added improvements for 
  42  //          windows xp/2000 id in opera and aol 7 id (thanks to Les
  43  //          Hill, Les.Hill@getronics.com, for the suggestion).
  44  // 020531 - Added N6/7 and moz identifiers. 
  45  // 020605 - Added mozilla guessing, Netscape 7 identification, and cleaner
  46  //          identification for Netscape 6. (this comment added after code 
  47  //          changes)
  48  // 020725 - Added is_gecko. -- dmr
  49  // 021205 - Added is_Flash and is_FlashVersion, based on Doc JavaScript code. 
  50  //          Added Opera 7 variables. -- dmr
  51  // 021209 - Added aol8. -- dmr
  52  // 030110 - Added is_safari, added 1.5 js designation for Opera 7. --dmr
  53  // 030128 - Added is_konq, per user suggestion (thanks to Sam Vilain).
  54  //          Removed duplicate Opera checks left over after last revision. - dmr
  55  // 031124 - Added is_fb and version. We report this right after the is_moz
  56  //          report. - dmr
  57  // 040325 - Added is_fx and version. We report this right after the is_moz
  58  //          report. - dmr
  59  // 040421 - Added Debian check to is_moz. Thanks to Patrice Bridoux for
  60  //          reporting this.
  61  // 040517 - Added is_fb/is_fx to plugins based flash detection. Thanks to 
  62  //          Martin Bischoff for pointing out this omission.
  63  // 040617 - On Mac IE, appVersion differs from the version in the ua, 
  64  //          with the UA appearing to be more accurate. As an experiment, 
  65  //          for Mac we'll pull is_minor from the ua instead.
  66  // 040831 - Fixed Opera bug in flash detection logic; when Opera has
  67  //          "enable plugins" unchecked in preferences, the "plugin" 
  68  //          variable is still true, but the "description" property 
  69  //          belonging to it is undefined.
  70  // 051202 - Added ua check for higher versions of Firefox (1.5+), 
  71  //          since vendor/vendorSub is no longer used and the sniffer 
  72  //          was assuming Mozilla. Also belatedly added is_nav8 and 
  73  //          is_nav8up.
  74  // 060919 - Some catchup mods here; adding is_opera8, is_opera9, 
  75  //          and IE7 (thanks to Jonathan Warrington)
  76  // 061009 - Added is_macosx check and safari to Flash checking, per 
  77  //          Michael Hopkins 
  78  //
  79  // Everything you always wanted to know about your JavaScript client
  80  // but were afraid to ask. Creates "is_" variables indicating:
  81  // (1) browser vendor:
  82  //     is_nav, is_ie, is_opera
  83  // (2) browser version number:
  84  //     is_major (integer indicating major version number: 2, 3, 4 ...)
  85  //     is_minor (float   indicating full  version number: 2.02, 3.01, 4.04 ...)
  86  // (3) browser vendor AND major version number
  87  //     is_nav2, is_nav3, is_nav4, is_nav4up, is_nav5, is_nav5up, 
  88  //     is_nav6, is_nav6up, is_ie3, is_ie4, is_ie4up, is_ie5up, is_ie6...
  89  // (4) JavaScript version number:
  90  //     is_js (float indicating full JavaScript version number: 1, 1.1, 1.2 ...)
  91  // (5) OS platform and version:
  92  //     is_win, is_win16, is_win32, is_win31, is_win95, is_winnt, is_win98
  93  //     is_os2
  94  //     is_mac, is_mac68k, is_macppc
  95  //     is_unix
  96  //        is_sun, is_sun4, is_sun5, is_suni86
  97  //        is_irix, is_irix5, is_irix6
  98  //        is_hpux, is_hpux9, is_hpux10
  99  //        is_aix, is_aix1, is_aix2, is_aix3, is_aix4
 100  //        is_linux, is_sco, is_unixware, is_mpras, is_reliant
 101  //        is_dec, is_sinix, is_freebsd, is_bsd
 102  //     is_vms
 103  //
 104  // based in part on 
 105  // http://www.mozilla.org/docs/web-developer/sniffer/browser_type.html
 106  // The Ultimate JavaScript Client Sniffer
 107  // and Andy King's object detection sniffer
 108  //
 109  // Note: you don't want your Nav4 or IE4 code to "turn off" or
 110  // stop working when Nav5 and IE5 (or later) are released, so
 111  // in conditional code forks, use is_nav4up ("Nav4 or greater")
 112  // and is_ie4up ("IE4 or greater") instead of is_nav4 or is_ie4
 113  // to check version in code which you want to work on future
 114  // versions. For DOM tests scripters commonly used the 
 115  // is_getElementById test, but make sure you test your code as
 116  // filter non-compliant browsers (Opera 5-6 for example) as some 
 117  // browsers return true for this test, and don't fully support
 118  // the W3C's DOM1.
 119  //
 120  
 121      // convert all characters to lowercase to simplify testing
 122      var agt=navigator.userAgent.toLowerCase();
 123      var appVer = navigator.appVersion.toLowerCase();
 124  
 125      // *** BROWSER VERSION ***
 126  
 127      var is_minor = parseFloat(appVer);
 128      var is_major = parseInt(is_minor);
 129  
 130      var is_opera = (agt.indexOf("opera") != -1);
 131      var is_opera2 = (agt.indexOf("opera 2") != -1 || agt.indexOf("opera/2") != -1);
 132      var is_opera3 = (agt.indexOf("opera 3") != -1 || agt.indexOf("opera/3") != -1);
 133      var is_opera4 = (agt.indexOf("opera 4") != -1 || agt.indexOf("opera/4") != -1);
 134      var is_opera5 = (agt.indexOf("opera 5") != -1 || agt.indexOf("opera/5") != -1);
 135      var is_opera6 = (agt.indexOf("opera 6") != -1 || agt.indexOf("opera/6") != -1); // 020128- abk
 136      var is_opera7 = (agt.indexOf("opera 7") != -1 || agt.indexOf("opera/7") != -1); // 021205- dmr
 137      var is_opera8 = (agt.indexOf("opera 8") != -1 || agt.indexOf("opera/8") != -1); // 09-19-2006 jonw 
 138      var is_opera9 = (agt.indexOf("opera 9") != -1 || agt.indexOf("opera/9") != -1); // 09-19-2006 jonw
 139  
 140      var is_opera5up = (is_opera && !is_opera2 && !is_opera3 && !is_opera4);
 141      // IFs made more compact by checking against is_operaXup
 142      var is_opera6up = (is_opera5up && !is_opera5); // new020128 
 143      var is_opera7up = (is_opera6up && !is_opera6); // new021205 -- dmr
 144      var is_opera8up = (is_opera7up && !is_opera7); // 09-19-2006 - jonw
 145      var is_opera9up = (is_opera8up &&!is_opera8); // 09-19-2006 - jonw
 146  
 147      // Note: On IE, start of appVersion return 3 or 4
 148      // which supposedly is the version of Netscape it is compatible with.
 149      // So we look for the real version further on in the string
 150      // And on Mac IE5+, we look for is_minor in the ua; since 
 151      // it appears to be more accurate than appVersion - 06/17/2004
 152  
 153      var is_mac = (agt.indexOf("mac")!=-1);
 154      var iePos  = appVer.indexOf('msie');
 155      if (iePos !=-1) {
 156         if(is_mac) {
 157             var iePos = agt.indexOf('msie');
 158             is_minor = parseFloat(agt.substring(iePos+5,agt.indexOf(';',iePos)));
 159         }
 160         else is_minor = parseFloat(appVer.substring(iePos+5,appVer.indexOf(';',iePos)));
 161         is_major = parseInt(is_minor);
 162      }
 163  
 164      // ditto Konqueror
 165                                        
 166      var is_konq = false;
 167      var kqPos   = agt.indexOf('konqueror');
 168      if (kqPos !=-1) {                 
 169         is_konq  = true;
 170         is_minor = parseFloat(agt.substring(kqPos+10,agt.indexOf(';',kqPos)));
 171         is_major = parseInt(is_minor);
 172      }                                 
 173  
 174      var is_getElementById   = (document.getElementById) ? "true" : "false"; // 001121-abk
 175      var is_getElementsByTagName = (document.getElementsByTagName) ? "true" : "false"; // 001127-abk
 176      var is_documentElement = (document.documentElement) ? "true" : "false"; // 001121-abk
 177  
 178      var is_safari = ((agt.indexOf('safari')!=-1)&&(agt.indexOf('mac')!=-1))?true:false;
 179      var is_khtml  = (is_safari || is_konq);
 180  
 181      var is_gecko = ((!is_khtml)&&(navigator.product)&&(navigator.product.toLowerCase()=="gecko"))?true:false;
 182      var is_gver  = 0;
 183      if (is_gecko) is_gver=navigator.productSub;
 184  
 185      var is_fb = ((agt.indexOf('mozilla/5')!=-1) && (agt.indexOf('spoofer')==-1) &&
 186                   (agt.indexOf('compatible')==-1) && (agt.indexOf('opera')==-1)  &&
 187                   (agt.indexOf('webtv')==-1) && (agt.indexOf('hotjava')==-1)     &&
 188                   (is_gecko) && (navigator.vendor=="Firebird"));
 189      var is_fx = ((agt.indexOf('mozilla/5')!=-1) && (agt.indexOf('spoofer')==-1) &&
 190                   (agt.indexOf('compatible')==-1) && (agt.indexOf('opera')==-1)  &&
 191                   (agt.indexOf('webtv')==-1) && (agt.indexOf('hotjava')==-1)     &&
 192                   (is_gecko) && ((navigator.vendor=="Firefox")||(agt.indexOf('firefox')!=-1)));
 193      var is_moz   = ((agt.indexOf('mozilla/5')!=-1) && (agt.indexOf('spoofer')==-1) &&
 194                      (agt.indexOf('compatible')==-1) && (agt.indexOf('opera')==-1)  &&
 195                      (agt.indexOf('webtv')==-1) && (agt.indexOf('hotjava')==-1)     &&
 196                      (is_gecko) && (!is_fb) && (!is_fx) &&
 197                      ((navigator.vendor=="")||(navigator.vendor=="Mozilla")||(navigator.vendor=="Debian")));
 198      if ((is_moz)||(is_fb)||(is_fx)) {  // 032504 - dmr
 199         var is_moz_ver = (navigator.vendorSub)?navigator.vendorSub:0;
 200         if(is_fx&&!is_moz_ver) {
 201             is_moz_ver = agt.indexOf('firefox/');
 202             is_moz_ver = agt.substring(is_moz_ver+8);
 203             is_moz_ver = parseFloat(is_moz_ver);
 204         }
 205         if(!(is_moz_ver)) {
 206             is_moz_ver = agt.indexOf('rv:');
 207             is_moz_ver = agt.substring(is_moz_ver+3);
 208             is_paren   = is_moz_ver.indexOf(')');
 209             is_moz_ver = is_moz_ver.substring(0,is_paren);
 210         }
 211         is_minor = is_moz_ver;
 212         is_major = parseInt(is_moz_ver);
 213      }
 214     var is_fb_ver = is_moz_ver;
 215     var is_fx_ver = is_moz_ver;
 216  
 217      var is_nav  = ((agt.indexOf('mozilla')!=-1) && (agt.indexOf('spoofer')==-1)
 218                  && (agt.indexOf('compatible') == -1) && (agt.indexOf('opera')==-1)
 219                  && (agt.indexOf('webtv')==-1) && (agt.indexOf('hotjava')==-1)
 220                  && (!is_khtml) && (!(is_moz)) && (!is_fb) && (!is_fx));
 221  
 222      // Netscape6 is mozilla/5 + Netscape6/6.0!!!
 223      // Mozilla/5.0 (Windows; U; Win98; en-US; m18) Gecko/20001108 Netscape6/6.0
 224      // Changed this to use navigator.vendor/vendorSub - dmr 060502   
 225      // var nav6Pos = agt.indexOf('netscape6');
 226      // if (nav6Pos !=-1) {
 227      if ((navigator.vendor)&&
 228          ((navigator.vendor=="Netscape6")||(navigator.vendor=="Netscape"))&&
 229          (is_nav)) {
 230         is_major = parseInt(navigator.vendorSub);
 231         // here we need is_minor as a valid float for testing. We'll
 232         // revert to the actual content before printing the result. 
 233         is_minor = parseFloat(navigator.vendorSub);
 234      }
 235  
 236      var is_nav2 = (is_nav && (is_major == 2));
 237      var is_nav3 = (is_nav && (is_major == 3));
 238      var is_nav4 = (is_nav && (is_major == 4));
 239      var is_nav4up = (is_nav && is_minor >= 4);  // changed to is_minor for
 240                                                  // consistency - dmr, 011001
 241      var is_navonly      = (is_nav && ((agt.indexOf(";nav") != -1) ||
 242                            (agt.indexOf("; nav") != -1)) );
 243  
 244      var is_nav6    = (is_nav && is_major==6);    // new 010118 mhp
 245      var is_nav6up  = (is_nav && is_minor >= 6); // new 010118 mhp
 246  
 247      var is_nav5    = (is_nav && is_major == 5 && !is_nav6); // checked for ns6
 248      var is_nav5up  = (is_nav && is_minor >= 5);
 249  
 250      var is_nav7    = (is_nav && is_major == 7);
 251      var is_nav7up  = (is_nav && is_minor >= 7);
 252  
 253      var is_nav8    = (is_nav && is_major == 8);
 254      var is_nav8up  = (is_nav && is_minor >= 8);
 255  
 256      var is_ie      = ((iePos!=-1) && (!is_opera) && (!is_khtml));
 257      var is_ie3     = (is_ie && (is_major < 4));
 258  
 259      var is_ie4     = (is_ie && is_major == 4);
 260      var is_ie4up   = (is_ie && is_minor >= 4);
 261      var is_ie5     = (is_ie && is_major == 5);
 262      var is_ie5up   = (is_ie && is_minor >= 5);
 263      
 264      var is_ie5_5   = (is_ie && (agt.indexOf("msie 5.5") !=-1)); // 020128 new - abk
 265      var is_ie5_5up = (is_ie && is_minor >= 5.5);                // 020128 new - abk
 266      
 267      var is_ie6     = (is_ie && is_major == 6);
 268      var is_ie6up   = (is_ie && is_minor >= 6);
 269  
 270      var is_ie7     = (is_ie && is_major == 7);
 271      var is_ie7up   = (is_ie && is_minor >= 7);
 272  
 273      // KNOWN BUG: On AOL4, returns false if IE3 is embedded browser
 274      // or if this is the first browser window opened.  Thus the
 275      // variables is_aol, is_aol3, and is_aol4 aren't 100% reliable.
 276  
 277      var is_aol   = (agt.indexOf("aol") != -1);
 278      var is_aol3  = (is_aol && is_ie3);
 279      var is_aol4  = (is_aol && is_ie4);
 280      var is_aol5  = (agt.indexOf("aol 5") != -1);
 281      var is_aol6  = (agt.indexOf("aol 6") != -1);
 282      var is_aol7  = ((agt.indexOf("aol 7")!=-1) || (agt.indexOf("aol7")!=-1));
 283      var is_aol8  = ((agt.indexOf("aol 8")!=-1) || (agt.indexOf("aol8")!=-1));
 284  
 285      var is_webtv = (agt.indexOf("webtv") != -1);
 286      
 287      // new 020128 - abk
 288      
 289      var is_TVNavigator = ((agt.indexOf("navio") != -1) || (agt.indexOf("navio_aoltv") != -1)); 
 290      var is_AOLTV = is_TVNavigator;
 291  
 292      var is_hotjava = (agt.indexOf("hotjava") != -1);
 293      var is_hotjava3 = (is_hotjava && (is_major == 3));
 294      var is_hotjava3up = (is_hotjava && (is_major >= 3));
 295  
 296      // end new
 297      
 298      // *** JAVASCRIPT VERSION CHECK ***
 299      // Useful to workaround Nav3 bug in which Nav3
 300      // loads <SCRIPT LANGUAGE="JavaScript1.2">.
 301      // updated 020131 by dragle
 302      var is_js;
 303      if (is_nav2 || is_ie3) is_js = 1.0;
 304      else if (is_nav3) is_js = 1.1;
 305      else if ((is_opera5)||(is_opera6)) is_js = 1.3; // 020214 - dmr
 306      else if (is_opera7up) is_js = 1.5; // 031010 - dmr
 307      else if (is_khtml) is_js = 1.5;   // 030110 - dmr
 308      else if (is_opera) is_js = 1.1;
 309      else if ((is_nav4 && (is_minor <= 4.05)) || is_ie4) is_js = 1.2;
 310      else if ((is_nav4 && (is_minor > 4.05)) || is_ie5) is_js = 1.3;
 311      else if (is_nav5 && !(is_nav6)) is_js = 1.4;
 312      else if (is_hotjava3up) is_js = 1.4; // new 020128 - abk
 313      else if (is_nav6up) is_js = 1.5;
 314  
 315      // NOTE: In the future, update this code when newer versions of JS
 316      // are released. For now, we try to provide some upward compatibility
 317      // so that future versions of Nav and IE will show they are at
 318      // *least* JS 1.x capable. Always check for JS version compatibility
 319      // with > or >=.
 320  
 321      else if (is_nav && (is_major > 5)) is_js = 1.4;
 322      else if (is_ie && (is_major > 5)) is_js = 1.3;
 323      else if (is_moz) is_js = 1.5;
 324      else if (is_fb||is_fx) is_js = 1.5; // 032504 - dmr
 325      
 326      // what about ie6 and ie6up for js version? abk
 327      
 328      // HACK: no idea for other browsers; always check for JS version 
 329      // with > or >=
 330      else is_js = 0.0;
 331      // HACK FOR IE5 MAC = js vers = 1.4 (if put inside if/else jumps out at 1.3)
 332      if ((agt.indexOf("mac")!=-1) && is_ie5up) is_js = 1.4; // 020128 - abk
 333      
 334      // Done with is_minor testing; revert to real for N6/7
 335      if (is_nav6up) {
 336         is_minor = navigator.vendorSub;
 337      }
 338  
 339      // *** PLATFORM ***
 340      var is_win   = ( (agt.indexOf("win")!=-1) || (agt.indexOf("16bit")!=-1) );
 341      // NOTE: On Opera 3.0, the userAgent string includes "Windows 95/NT4" on all
 342      //        Win32, so you can't distinguish between Win95 and WinNT.
 343      var is_win95 = ((agt.indexOf("win95")!=-1) || (agt.indexOf("windows 95")!=-1));
 344  
 345      // is this a 16 bit compiled version?
 346      var is_win16 = ((agt.indexOf("win16")!=-1) ||
 347                 (agt.indexOf("16bit")!=-1) || (agt.indexOf("windows 3.1")!=-1) ||
 348                 (agt.indexOf("windows 16-bit")!=-1) );
 349  
 350      var is_win31 = ((agt.indexOf("windows 3.1")!=-1) || (agt.indexOf("win16")!=-1) ||
 351                      (agt.indexOf("windows 16-bit")!=-1));
 352      
 353      var is_winme = ((agt.indexOf("win 9x 4.90")!=-1));    // new 020128 - abk
 354      var is_win2k = ((agt.indexOf("windows nt 5.0")!=-1) || (agt.indexOf("windows 2000")!=-1)); // 020214 - dmr
 355      var is_winxp = ((agt.indexOf("windows nt 5.1")!=-1) || (agt.indexOf("windows xp")!=-1)); // 020214 - dmr
 356  
 357      // NOTE: Reliable detection of Win98 may not be possible. It appears that:
 358      //       - On Nav 4.x and before you'll get plain "Windows" in userAgent.
 359      //       - On Mercury client, the 32-bit version will return "Win98", but
 360      //         the 16-bit version running on Win98 will still return "Win95".
 361      var is_win98 = ((agt.indexOf("win98")!=-1) || (agt.indexOf("windows 98")!=-1));
 362      var is_winnt = ((agt.indexOf("winnt")!=-1) || (agt.indexOf("windows nt")!=-1));
 363      var is_win32 = (is_win95 || is_winnt || is_win98 ||
 364                      ((is_major >= 4) && (navigator.platform == "Win32")) ||
 365                      (agt.indexOf("win32")!=-1) || (agt.indexOf("32bit")!=-1));
 366  
 367      var is_os2   = ((agt.indexOf("os/2")!=-1) ||
 368                      (navigator.appVersion.indexOf("OS/2")!=-1) ||
 369                      (agt.indexOf("ibm-webexplorer")!=-1));
 370  
 371      var is_mac    = (agt.indexOf("mac")!=-1);
 372      if (is_mac) { is_win = !is_mac; } // dmr - 06/20/2002
 373      var is_mac68k = (is_mac && ((agt.indexOf("68k")!=-1) ||
 374                                 (agt.indexOf("68000")!=-1)));
 375      var is_macppc = (is_mac && ((agt.indexOf("ppc")!=-1) ||
 376                                  (agt.indexOf("powerpc")!=-1)));
 377      var is_macosx = (is_mac && (agt.indexOf("os x")!=-1));
 378  
 379      var is_sun   = (agt.indexOf("sunos")!=-1);
 380      var is_sun4  = (agt.indexOf("sunos 4")!=-1);
 381      var is_sun5  = (agt.indexOf("sunos 5")!=-1);
 382      var is_suni86= (is_sun && (agt.indexOf("i86")!=-1));
 383      var is_irix  = (agt.indexOf("irix") !=-1);    // SGI
 384      var is_irix5 = (agt.indexOf("irix 5") !=-1);
 385      var is_irix6 = ((agt.indexOf("irix 6") !=-1) || (agt.indexOf("irix6") !=-1));
 386      var is_hpux  = (agt.indexOf("hp-ux")!=-1);
 387      var is_hpux9 = (is_hpux && (agt.indexOf("09.")!=-1));
 388      var is_hpux10= (is_hpux && (agt.indexOf("10.")!=-1));
 389      var is_aix   = (agt.indexOf("aix") !=-1);      // IBM
 390      var is_aix1  = (agt.indexOf("aix 1") !=-1);
 391      var is_aix2  = (agt.indexOf("aix 2") !=-1);
 392      var is_aix3  = (agt.indexOf("aix 3") !=-1);
 393      var is_aix4  = (agt.indexOf("aix 4") !=-1);
 394      var is_linux = (agt.indexOf("inux")!=-1);
 395      var is_sco   = (agt.indexOf("sco")!=-1) || (agt.indexOf("unix_sv")!=-1);
 396      var is_unixware = (agt.indexOf("unix_system_v")!=-1);
 397      var is_mpras    = (agt.indexOf("ncr")!=-1);
 398      var is_reliant  = (agt.indexOf("reliantunix")!=-1);
 399      var is_dec   = ((agt.indexOf("dec")!=-1) || (agt.indexOf("osf1")!=-1) ||
 400             (agt.indexOf("dec_alpha")!=-1) || (agt.indexOf("alphaserver")!=-1) ||
 401             (agt.indexOf("ultrix")!=-1) || (agt.indexOf("alphastation")!=-1));
 402      var is_sinix = (agt.indexOf("sinix")!=-1);
 403      var is_freebsd = (agt.indexOf("freebsd")!=-1);
 404      var is_bsd = (agt.indexOf("bsd")!=-1);
 405      var is_unix  = ((agt.indexOf("x11")!=-1) || is_sun || is_irix || is_hpux ||
 406                   is_sco ||is_unixware || is_mpras || is_reliant ||
 407                   is_dec || is_sinix || is_aix || is_linux || is_bsd || is_freebsd);
 408  
 409      var is_vms   = ((agt.indexOf("vax")!=-1) || (agt.indexOf("openvms")!=-1));
 410  // additional checks, abk
 411      var is_anchors = (document.anchors) ? "true":"false";
 412      var is_regexp = (window.RegExp) ? "true":"false";
 413      var is_option = (window.Option) ? "true":"false";
 414      var is_all = (document.all) ? "true":"false";
 415  // cookies - 990624 - abk
 416      document.cookie = "cookies=true";
 417      var is_cookie = (document.cookie) ? "true" : "false";
 418      var is_images = (document.images) ? "true":"false";
 419      var is_layers = (document.layers) ? "true":"false"; // gecko m7 bug?
 420  // new doc obj tests 990624-abk
 421      var is_forms = (document.forms) ? "true" : "false";
 422      var is_links = (document.links) ? "true" : "false";
 423      var is_frames = (window.frames) ? "true" : "false";
 424      var is_screen = (window.screen) ? "true" : "false";
 425  
 426  // java
 427      var is_java = (navigator.javaEnabled());
 428  
 429  // Flash checking code adapted from Doc JavaScript information; 
 430  // see http://webref.com/js/column84/2.html
 431  
 432     var is_Flash        = false;
 433     var is_FlashVersion = 0;
 434  
 435     if ((is_nav||is_opera||is_moz||is_fb||is_fx||is_safari)||
 436         (is_mac&&is_ie5up)) {
 437        var plugin = (navigator.mimeTypes && 
 438                      navigator.mimeTypes["application/x-shockwave-flash"] &&
 439                      navigator.mimeTypes["application/x-shockwave-flash"].enabledPlugin) ?
 440                      navigator.mimeTypes["application/x-shockwave-flash"].enabledPlugin : 0;
 441  //      if (plugin) {
 442        if (plugin&&plugin.description) {
 443           is_Flash = true;
 444           is_FlashVersion = parseInt(plugin.description.substring(plugin.description.indexOf(".")-1));
 445        }
 446     }
 447  
 448     if (is_win&&is_ie4up)
 449     {
 450        document.write(
 451           '<scr' + 'ipt language="VBScript">' + '\n' +
 452           'Dim hasPlayer, playerversion' + '\n' +
 453           'hasPlayer = false' + '\n' +
 454           'playerversion = 10' + '\n' +
 455           'Do While playerversion > 0' + '\n' +
 456              'On Error Resume Next' + '\n' +
 457              'hasPlayer = (IsObject(CreateObject("ShockwaveFlash.ShockwaveFlash." & playerversion)))' + '\n' +
 458              'If hasPlayer = true Then Exit Do' + '\n' +
 459              'playerversion = playerversion - 1' + '\n' +
 460           'Loop' + '\n' +
 461           'is_FlashVersion = playerversion' + '\n' +
 462           'is_Flash = hasPlayer' + '\n' +
 463           '<\/sc' + 'ript>'
 464        );
 465     }
 466  
 467  // -->// JavaScript Document