Benutzer:Guidod/Automation/wikipedia.rollback.code.js

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 // ----------------------------------------------------------------------- 100 -*- java -*-
 // Wikipedia Rollback Buttons
 // (c) 2006 Guido Draheim <guidod@gmx.de>
 // Version: 2006-07-11
 // Quelle:  http://guidod.homelinux.org/greasemonkey/
 // Lizenz:  http://creativecommons.org/licenses/by-nc-sa/2.0/de/
 // - based on / basierend auf:
 // God-like Monobook skin 
 // (c) 2005 Sam Hocevar <sam@zoy.org>
 // Version: 2006-04-03 20:25:37Z 
 // ----------------------------------------------------------------------
 
 function document_get_lang() { 
     return document.getElementsByTagName('html')[0].lang; 
 }
 
 function document_content() {
     return document.getElementById('bodyContent');
 }
 
 // --------------------------------------------------------------------------
 // Language support, taken from phase3/languages/*
 // --------------------------------------------------------------------------
 var LinkRollback = 'rollback';
 var LinkVandal = 'vandal';
 var LinkWeird = 'weird';
 var LinkDisk = 'disk';
 var NoRollbackFirst = 
 'Cannot revert edit; last contributor is only author of this page.';
 var NoRollbackAlreadyDone = 
 'Cannot rollback last edit of [[$1]] by [[User:$2|$2]] ([[User talk:$2|Talk]]);'
 +' someone else has edited or rolled back the page already.'
 +' Last edit was by [[User:$3|$3]] ([[User talk:$3|Talk]]). ';
 var MsgRevert = 
 'Reverted edits by [[Special:Contributions/$2|$2]], back to last version by $1';
 var MsgVandal = 
 'Reverted vandalism by [[Special:Contributions/$2|$2]], back to last version by $1';
 var MsgWeird = 
 'Reverted wrong stuff by [[Special:Contributions/$2|$2]], back to last version by $1';
 var MsgDisk = ', see talk page!';
 
 var StartingRevert =
 'Please wait, reverting edits by [$1]...';
 var BadToken =
 'Bad authentication token!';
 var GettingHistory =
 'Getting article history ($1)...';
 var HistoryParseFailed = ""
 +'<br />Failed to parse XML data returned by the server.<br /><b>Hint:'
 +' try to disable both "Enable section editing by right-clicking on section titles (JavaScript)"'
 +' and "Edit pages on double click (JavaScript)" in your editing preferences'
 +' until a proper fix is found</b>.'
 +'<br />Dump of the unparseable page : <br />$1';
 var LastEditorChanged =
 +'Error: Last editor is [$1], not [$2]!';
 var LastEditorIsFirst =
 'Error: $1 is the only editor!';
 var GettingEditForm =
 'Getting article edit form ($1)...';
 var SubmitEditForm =
 'Submitting edited article form...';
 
 switch (document_get_lang()) {
   case 'fr':
     LinkRollback = 'révoquer';
     LinkVandal = 'vandalisme';
     LinkWeird = 'maltraitise';
     LinkDisk = 'discussion';
     NoRollbackFirst = 'Impossible de révoquer:'
 	+' dernier auteur est le seul à avoir modifié cet article';
     NoRollbackAlreadyDone = 
 	'Impossible de révoquer la dernière modification de [[$1]] par  [[User:$2|$2]]'
 	+' ([[User talk:$2|Talk]]); quelqu\'un d\'autre à déjà modifer ou révoquer l\'article.'
 	+' La dernière modificaion était de [[User:$3|$3]] ([[User talk:$3|Talk]]). '; 
     MsgRevert = "Révocation des modifications de [[Special:Contributions/$2|$2]]"
 	+" en arrviant a la précédente version de $1";
     MsgVandal = "Révocation du vandalisme de [[Special:Contributions/$2|$2]]"
 	+" en arrivant a la précédente version de $1";
     MsgWeird = "Révocation du maltraitise de [[Special:Contributions/$2|$2]]"
 	+" en arrivant a la précédente version de $1";
     MsgDisk = ", voir discussion!";
     break;
   case 'de':
     LinkRollback = 'Revert';
     LinkVandal = 'Vandal';
     LinkWeird = 'Unfug';
     LinkDisk = 'Disku';
     NoRollbackFirst = 
 	'Die Änderung kann nicht zurückgenommen werden;'
 	+' der letzte Autor ist der einzige.';
     NoRollbackAlreadyDone = 
 	'Die Zurücknahme des Artikels [[$1]] von [[Benutzer:$2|$2]]'
 	+' ([[Benutzer Diskussion:$2|Diskussion]]) ist nicht möglich,'
 	+' da eine andere Änderung oder Rücknahme erfolgt ist.'
 	+' Die letzte Änderung ist von [[Benutzer:$3|$3]] ([[Benutzer Diskussion:$3|Diskussion]])';
     MsgRevert = 'Revert Änderungen von [[Spezial:Contributions/$2|$2]]'
 	+' auf letzte Version von [[Spezial:Contributions/$1|$1]]';
     MsgVandal = 'Revert Vandalismus von [[Spezial:Contributions/$2|$2]]'
 	+' auf letzte Version von [[Spezial:Contributions/$1|$1]]';
     MsgWeird = 'Revert Unfug von [[Spezial:Contributions/$2|$2]]'
 	+' auf letzte Version von [[Spezial:Contributions/$1|$1]]';
     MsgDisk = ', siehe Diskussion!';
     StartingRevert = 'Bitte warten, Revert ist unterwegs für Änderungen von [$1]...';
     BadToken = 'Prüfsumme zur Authentifizierung ist falsch!';
     GettingHistory = 'Hole jetzt die Versionsgeschichte ($1)...';
     HistoryParseFailed = ""
 	+'<br />Konnte die XML Ausgabe des Serves nicht parsen.<br /><b>Beachte: Das Abschalten'
 	+' von "Enable section editing by right-clicking on section titles (JavaScript)"'
 	+' und "Edit pages on double click (JavaScript)" in your editing preferences'
 	+' kann hilfreich sein.</b>.'
 	+'<br />Der problematische Text ist: <br />$1';
     LastEditorChanged = 'Fehler: Der letzte Autor ist [$1], statt erwartetem [$2]!';
     LastEditorIsFirst = 'Fehler: $1 ist der einzige Autor!';
     GettingEditForm = 'Hole jetzt das Edit-Formular des Artikels ($1)...';
     SubmitEditForm = 'Sende jetzt das Edit-Formular zurück...';
     break;
   case 'es':
     LinkRollback = 'Revertir';
     LinkVandal = 'Revertir';
     LinkWeird = 'Revertir';
     LinkDisk = 'Revertir';
     NoRollbackFirst = 'No se pueden revertir las ediciones;'
 	+' el último colaborador es el único autor de este artículo.';
     NoRollbackAlreadyDone = 
 	'No se puede revertir la última edición de [[$1]] por [[Colaborador:$2|$2]]'
 	+' ([[Colaborador Discusión:$2|Discusión]]); alguien más ya ha editado o revertido'
 	+' esa página.  La última edición'
 	+' fue hecha por [[Colaborador:$3|$3]] ([[Colaborador Discusión:$3|Discusión]]). ';
     MsgRevert = 'Revertida a la última edición de $1';
     MsgVandal = 'Revertida a la última edición de $1';
     MsgWeird = 'Revertida a la última edición de $1';
     MsgDisk = ', discussion!';
     break;
   case 'it':
     LinkRollback = 'rollback';
     LinkVandal = 'rollback';
     LinkWeird = 'rollback';
     NoRollbackFirst = 'Impossibile tornare ad una versione precedente: l\'ultima modifica'
 	+' è stata apportata dall\'unico utente che abbia lavorato a questo articolo.';
     //NoRollbackAlreadyDone = '';
     MsgRevert = 'Riportata alla revisione precedente da $1';
     MsgVandal = 'Riportata alla revisione precedente da $1';
     MsgWeird = 'Riportata alla revisione precedente da $1';
     MsgDisk = ', discussion!';
     break;
   case 'pt':
     LinkRollback = 'voltar';
     LinkVandal = 'voltar';
     LinkWeird = 'voltar';
     LinkDisk = 'voltar';
     NoRollbackFirst = 'Não foi possível reverter a edição;'
 	+' o último contribuidor é o único autor deste artigo.';
     NoRollbackAlreadyDone = 'Não foi possível reverter as edições de  [[$1]] por [[User:$2|$2]]'
 	+' ([[User talk:$2|Talk]]); alguém o editou ou já o reverteu.  A última edição'
 	+' foi de  [[User:$3|$3]] ([[User talk:$3|Conversar com ele]]). ';
     MsgRevert = 'Revertidas edições por [[Special:Contributions/$2|$2]],'
 	+' para a última versão por $1';
     MsgVandal = 'Revertidas edições por [[Special:Contributions/$2|$2]],'
 	+' para a última versão por $1';
     MsgWeird = 'Revertidas edições por [[Special:Contributions/$2|$2]],'
 	+' para a última versão por $1';
     MsgDisk = ', discussion!';
     break;
 }
 
 // ================================================================ Formatter
 
 function str1(format, arg1) {
     return format.replace(/\$1/g, arg1);
 }
 function str2(format, arg1, arg2) {
     return format.replace(/\$1/g, arg1).replace(/\$2/g, arg2);
 }
 function str3(format, arg1, arg2, arg3) {
     return format.replace(/\$1/g, arg1).replace(/\$2/g, arg2).replace(/\$3/g, arg3);
 }
 
 function str_code(text) {
     return xml.replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;');
 }
 
 // ================================================================ XML HELPER ==
 
 function gml_XMLParse(string) {
     if (document.implementation.createDocument) {
 	var xmlparser = new DOMParser();
 	return xmlparser.parseFromString(string, "text/xml");
     } else if (window.ActiveXObject) {
 	var xmldoc = new ActiveXObject("Microsoft.XMLDOM");
 	xmldoc.async = "false";
 	ret = xmldoc.loadXML(string);      
 	if (! ret) return null;
 	return xmldoc.documentElement;
     }
     return null;
 }
 
 function new_XMLHttpRequest() {
     if (window.XMLHttpRequest) {
 	return new XMLHttpRequest();
     } else if (window.ActiveXObject) {
 	try {
 	    return new ActiveXObject("Msxml2.XMLHTTP");
 	} catch (e) {
 	    try {
 		return new ActiveXObject("Microsoft.XMLHTTP");
 	    } catch (E) {
 		return false;
 	    }
 	}
     }
     return false;
 }
 
 // ================================================================ MD5 HELPER ==
 /*
  * A JavaScript implementation of the RSA Data Security, Inc. MD5 Message
  * Digest Algorithm, as defined in RFC 1321.
  * Version 2.1 Copyright (C) Paul Johnston 1999 - 2002.
  * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet
  * Distributed under the BSD License
  * See http://pajhome.org.uk/crypt/md5 for more info.
  */
 
 /*
  * Configurable variables. You may need to tweak these to be compatible with
  * the server-side, but the defaults work in most cases.
  */
 var hexcase = 0;  /* hex output format. 0 - lowercase; 1 - uppercase        */
 var b64pad  = ""; /* base-64 pad character. "=" for strict RFC compliance   */
 var chrsz   = 8;  /* bits per input character. 8 - ASCII; 16 - Unicode      */
 
 /*
  * These are the functions you'll usually want to call
  * They take string arguments and return either hex or base-64 encoded strings
  */
 function hex_md5(s){ return binl2hex(core_md5(str2binl(s), s.length * chrsz));}
 function b64_md5(s){ return binl2b64(core_md5(str2binl(s), s.length * chrsz));}
 function str_md5(s){ return binl2str(core_md5(str2binl(s), s.length * chrsz));}
 function hex_hmac_md5(key, data) { return binl2hex(core_hmac_md5(key, data)); }
 function b64_hmac_md5(key, data) { return binl2b64(core_hmac_md5(key, data)); }
 function str_hmac_md5(key, data) { return binl2str(core_hmac_md5(key, data)); }
 
 /*
  * Perform a simple self-test to see if the VM is working
  */
 function md5_vm_test()
 {
   return hex_md5("abc") == "900150983cd24fb0d6963f7d28e17f72";
 }
 
 /*
  * Calculate the MD5 of an array of little-endian words, and a bit length
  */
 function core_md5(x, len)
 {
   /* append padding */
   x[len >> 5] |= 0x80 << ((len) % 32);
   x[(((len + 64) >>> 9) << 4) + 14] = len;
 
   var a =  1732584193;
   var b = -271733879;
   var c = -1732584194;
   var d =  271733878;
 
   for(var i = 0; i < x.length; i += 16)
   {
     var olda = a;
     var oldb = b;
     var oldc = c;
     var oldd = d;
 
     a = md5_ff(a, b, c, d, x[i+ 0], 7 , -680876936);
     d = md5_ff(d, a, b, c, x[i+ 1], 12, -389564586);
     c = md5_ff(c, d, a, b, x[i+ 2], 17,  606105819);
     b = md5_ff(b, c, d, a, x[i+ 3], 22, -1044525330);
     a = md5_ff(a, b, c, d, x[i+ 4], 7 , -176418897);
     d = md5_ff(d, a, b, c, x[i+ 5], 12,  1200080426);
     c = md5_ff(c, d, a, b, x[i+ 6], 17, -1473231341);
     b = md5_ff(b, c, d, a, x[i+ 7], 22, -45705983);
     a = md5_ff(a, b, c, d, x[i+ 8], 7 ,  1770035416);
     d = md5_ff(d, a, b, c, x[i+ 9], 12, -1958414417);
     c = md5_ff(c, d, a, b, x[i+10], 17, -42063);
     b = md5_ff(b, c, d, a, x[i+11], 22, -1990404162);
     a = md5_ff(a, b, c, d, x[i+12], 7 ,  1804603682);
     d = md5_ff(d, a, b, c, x[i+13], 12, -40341101);
     c = md5_ff(c, d, a, b, x[i+14], 17, -1502002290);
     b = md5_ff(b, c, d, a, x[i+15], 22,  1236535329);
 
     a = md5_gg(a, b, c, d, x[i+ 1], 5 , -165796510);
     d = md5_gg(d, a, b, c, x[i+ 6], 9 , -1069501632);
     c = md5_gg(c, d, a, b, x[i+11], 14,  643717713);
     b = md5_gg(b, c, d, a, x[i+ 0], 20, -373897302);
     a = md5_gg(a, b, c, d, x[i+ 5], 5 , -701558691);
     d = md5_gg(d, a, b, c, x[i+10], 9 ,  38016083);
     c = md5_gg(c, d, a, b, x[i+15], 14, -660478335);
     b = md5_gg(b, c, d, a, x[i+ 4], 20, -405537848);
     a = md5_gg(a, b, c, d, x[i+ 9], 5 ,  568446438);
     d = md5_gg(d, a, b, c, x[i+14], 9 , -1019803690);
     c = md5_gg(c, d, a, b, x[i+ 3], 14, -187363961);
     b = md5_gg(b, c, d, a, x[i+ 8], 20,  1163531501);
     a = md5_gg(a, b, c, d, x[i+13], 5 , -1444681467);
     d = md5_gg(d, a, b, c, x[i+ 2], 9 , -51403784);
     c = md5_gg(c, d, a, b, x[i+ 7], 14,  1735328473);
     b = md5_gg(b, c, d, a, x[i+12], 20, -1926607734);
 
     a = md5_hh(a, b, c, d, x[i+ 5], 4 , -378558);
     d = md5_hh(d, a, b, c, x[i+ 8], 11, -2022574463);
     c = md5_hh(c, d, a, b, x[i+11], 16,  1839030562);
     b = md5_hh(b, c, d, a, x[i+14], 23, -35309556);
     a = md5_hh(a, b, c, d, x[i+ 1], 4 , -1530992060);
     d = md5_hh(d, a, b, c, x[i+ 4], 11,  1272893353);
     c = md5_hh(c, d, a, b, x[i+ 7], 16, -155497632);
     b = md5_hh(b, c, d, a, x[i+10], 23, -1094730640);
     a = md5_hh(a, b, c, d, x[i+13], 4 ,  681279174);
     d = md5_hh(d, a, b, c, x[i+ 0], 11, -358537222);
     c = md5_hh(c, d, a, b, x[i+ 3], 16, -722521979);
     b = md5_hh(b, c, d, a, x[i+ 6], 23,  76029189);
     a = md5_hh(a, b, c, d, x[i+ 9], 4 , -640364487);
     d = md5_hh(d, a, b, c, x[i+12], 11, -421815835);
     c = md5_hh(c, d, a, b, x[i+15], 16,  530742520);
     b = md5_hh(b, c, d, a, x[i+ 2], 23, -995338651);
 
     a = md5_ii(a, b, c, d, x[i+ 0], 6 , -198630844);
     d = md5_ii(d, a, b, c, x[i+ 7], 10,  1126891415);
     c = md5_ii(c, d, a, b, x[i+14], 15, -1416354905);
     b = md5_ii(b, c, d, a, x[i+ 5], 21, -57434055);
     a = md5_ii(a, b, c, d, x[i+12], 6 ,  1700485571);
     d = md5_ii(d, a, b, c, x[i+ 3], 10, -1894986606);
     c = md5_ii(c, d, a, b, x[i+10], 15, -1051523);
     b = md5_ii(b, c, d, a, x[i+ 1], 21, -2054922799);
     a = md5_ii(a, b, c, d, x[i+ 8], 6 ,  1873313359);
     d = md5_ii(d, a, b, c, x[i+15], 10, -30611744);
     c = md5_ii(c, d, a, b, x[i+ 6], 15, -1560198380);
     b = md5_ii(b, c, d, a, x[i+13], 21,  1309151649);
     a = md5_ii(a, b, c, d, x[i+ 4], 6 , -145523070);
     d = md5_ii(d, a, b, c, x[i+11], 10, -1120210379);
     c = md5_ii(c, d, a, b, x[i+ 2], 15,  718787259);
     b = md5_ii(b, c, d, a, x[i+ 9], 21, -343485551);
 
     a = safe_add(a, olda);
     b = safe_add(b, oldb);
     c = safe_add(c, oldc);
     d = safe_add(d, oldd);
   }
   return Array(a, b, c, d);
 
 }
 
 /*
  * These functions implement the four basic operations the algorithm uses.
  */
 function md5_cmn(q, a, b, x, s, t)
 {
   return safe_add(bit_rol(safe_add(safe_add(a, q), safe_add(x, t)), s),b);
 }
 function md5_ff(a, b, c, d, x, s, t)
 {
   return md5_cmn((b & c) | ((~b) & d), a, b, x, s, t);
 }
 function md5_gg(a, b, c, d, x, s, t)
 {
   return md5_cmn((b & d) | (c & (~d)), a, b, x, s, t);
 }
 function md5_hh(a, b, c, d, x, s, t)
 {
   return md5_cmn(b ^ c ^ d, a, b, x, s, t);
 }
 function md5_ii(a, b, c, d, x, s, t)
 {
   return md5_cmn(c ^ (b | (~d)), a, b, x, s, t);
 }
 
 /*
  * Calculate the HMAC-MD5, of a key and some data
  */
 function core_hmac_md5(key, data)
 {
   var bkey = str2binl(key);
   if(bkey.length > 16) bkey = core_md5(bkey, key.length * chrsz);
 
   var ipad = Array(16), opad = Array(16);
   for(var i = 0; i < 16; i++)
   {
     ipad[i] = bkey[i] ^ 0x36363636;
     opad[i] = bkey[i] ^ 0x5C5C5C5C;
   }
 
   var hash = core_md5(ipad.concat(str2binl(data)), 512 + data.length * chrsz);
   return core_md5(opad.concat(hash), 512 + 128);
 }
 
 /*
  * Add integers, wrapping at 2^32. This uses 16-bit operations internally
  * to work around bugs in some JS interpreters.
  */
 function safe_add(x, y)
 {
   var lsw = (x & 0xFFFF) + (y & 0xFFFF);
   var msw = (x >> 16) + (y >> 16) + (lsw >> 16);
   return (msw << 16) | (lsw & 0xFFFF);
 }
 
 /*
  * Bitwise rotate a 32-bit number to the left.
  */
 function bit_rol(num, cnt)
 {
   return (num << cnt) | (num >>> (32 - cnt));
 }
 
 /*
  * Convert a string to an array of little-endian words
  * If chrsz is ASCII, characters >255 have their hi-byte silently ignored.
  */
 function str2binl(str)
 {
   var bin = Array();
   var mask = (1 << chrsz) - 1;
   for(var i = 0; i < str.length * chrsz; i += chrsz)
     bin[i>>5] |= (str.charCodeAt(i / chrsz) & mask) << (i%32);
   return bin;
 }
 
 /*
  * Convert an array of little-endian words to a string
  */
 function binl2str(bin)
 {
   var str = "";
   var mask = (1 << chrsz) - 1;
   for(var i = 0; i < bin.length * 32; i += chrsz)
     str += String.fromCharCode((bin[i>>5] >>> (i % 32)) & mask);
   return str;
 }
 
 /*
  * Convert an array of little-endian words to a hex string.
  */
 function binl2hex(binarray)
 {
   var hex_tab = hexcase ? "0123456789ABCDEF" : "0123456789abcdef";
   var str = "";
   for(var i = 0; i < binarray.length * 4; i++)
   {
     str += hex_tab.charAt((binarray[i>>2] >> ((i%4)*8+4)) & 0xF) +
            hex_tab.charAt((binarray[i>>2] >> ((i%4)*8  )) & 0xF);
   }
   return str;
 }
 
 /*
  * Convert an array of little-endian words to a base-64 string
  */
 function binl2b64(binarray)
 {
   var tab = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
   var str = "";
   for(var i = 0; i < binarray.length * 4; i += 3)
   {
     var triplet = (((binarray[i   >> 2] >> 8 * ( i   %4)) & 0xFF) << 16)
                 | (((binarray[i+1 >> 2] >> 8 * ((i+1)%4)) & 0xFF) << 8 )
                 |  ((binarray[i+2 >> 2] >> 8 * ((i+2)%4)) & 0xFF);
     for(var j = 0; j < 4; j++)
     {
       if(i * 8 + j * 6 > binarray.length * 32) str += b64pad;
       else str += tab.charAt((triplet >> 6*(3-j)) & 0x3F);
     }
   }
   return str;
 }
 
 // ================================================================ THE SCRIPT ==
 
 var gml_vandal, gml_editor, gml_url, gml_reason;
 
 function TryPerformRevert() {
     var l, token = '', revert = false;
     // Look for '&fakeaction=rollback' in URL
     gml_url = location.pathname;
     l = location.search.substring(1).split('&');
     for (i = 0; i < l.length; i++) {
 	var n = l[i].indexOf('=');
 	var name = l[i].substring(0, n);
 	if (name == 'fakeaction') {
 	    if (l[i].substring(n + 1) == 'rollback')
 		revert = true;
 	} else if (name == 'vandal') {
 	    gml_vandal = unescape(l[i].substring(n + 1));
 	} else if (name == 'reason') {
 	    gml_reason = unescape(l[i].substring(n + 1));
 	} else if (name == 'token') {
 	    token = unescape(l[i].substring(n + 1));
 	} else if (name == 'title') {
 	    gml_url += '?' + l[i];
 	}
     }
     if (! revert) { return; } 
     if (token == '' || token != hex_md5(gml_url + gml_vandal + document.cookie)) {
 	// Avoid XSS kiddies by using a hash token
 	document_content().innerHTML += '<br />'+BadToken;
 	return;
     }
     RevertStepOne();
 }
 
 function RevertStepOne() {
     document_content().innerHTML = str1(StartingRevert, gml_vandal);
     var http = new_XMLHttpRequest(); if (! http) return;
     var history_url = gml_url + '&action=history&limit=50';
     document_content().innerHTML += '<br />'+str1(GettingHistory, history_url);
     http.open("GET", history_url, true);
     http.onreadystatechange = function() {
 	if (http.readyState == 4) RevertStepTwo(http);
     }
     http.send(null);
 }
 
 function RevertStepTwo(details) {
     var l;
     var oldid;
     // Get the vandal and new editor names
     gml_vandal = gml_vandal.replace(/_/g, ' ');
     gml_editor = '';
     xml = details.responseText.replace(/<body.*"ns-4">/, '<body class="ns-4">');
     doc = gml_XMLParse(xml);
     if (! doc || ! doc.getElementById('pagehistory')) { // Hack for a MediaWiki bug
 	document_content().innerHTML += str1(HistoryParseFailed, str_code(xml));
 	return;
     }
     l = doc.getElementById('pagehistory').getElementsByTagName('li');
     //l = doc.selectSingleNode('//*[@id="pagehistory"]').getElementsByTagName('li');
     for (i = 0; i < l.length; i++) {
 	var name = l[i].getElementsByTagName('span')[0]
 	    .getElementsByTagName('a')[0].innerHTML.replace(/_/g, ' ');
 	if (i == 0 && name != gml_vandal) {
 	    document_content().innerHTML += '<br />'+str2(LastEditorChanged, name, gml_vandal);
 	    return;
 	} else if (i > 0 && name != gml_vandal) {
 	    oldid = l[i].getElementsByTagName('input')[0].value;
 	    gml_editor = name;
 	    break;
 	}
     }
     if (gml_editor == '') {
 	document_content().innerHTML += '<br />'+str1(LastEditorIsFirst, gml_vandal);
 	return;
     }
 
     var http = new_XMLHttpRequest(); if (! http) return;
     next_url = gml_url + '&action=edit&oldid=' + oldid;
     document_content().innerHTML += '<br />'+str1(GettingEditForm, next_url);
     http.open('GET', next_url, true);
     http.onreadystatechange = function() {
 	if (http.readyState == 4) RevertStepThree(http);
     }
     http.send(null);
 }
 
 function RevertStepThree(details) {
     var form, newform, l;
     // Insert the downloaded form in our current page, using
     // only hidden form inputs.
     doc = gml_XMLParse(details.responseText);
     form = doc.getElementById('editform');
     newform = document.createElement('form');
     l = form.getElementsByTagName('textarea');
     for (i = l.length; i--; ) {
 	var t = document.createElement('input');
 	t.type = 'hidden';
 	t.name = l[i].name;
 	t.value = l[i].value;
 	newform.appendChild(t);
     }
     l = form.getElementsByTagName('input');
     for (i = l.length; i--; ) {
 	if (l[i].name == 'wpSummary') {
 	    if (gml_reason == 'vandal') {
 		l[i].value = str2(MsgVandal, gml_editor, gml_vandal);
 	    } else if (gml_reason == 'weird') {
 		l[i].value = str2(MsgWeird, gml_editor, gml_vandal);
 	    } else if (gml_reason == 'disk') {
 		l[i].value = str2(MsgRevert, gml_editor, gml_vandal);
 		l[i].value += MsgDisk;
 	    } else {
 		l[i].value = str2(MsgRevert, gml_editor, gml_vandal);
 	    }
 	} else if (l[i].name == 'wpMinoredit') {
 	    l[i].value = '1';
 	} else if (l[i].name == 'wpWatchthis') {
 	    if (!l[i].checked)
 		continue; // Don�$-1òùt touch the "watch" status
 	    l[i].value = "on";
 	} else if (l[i].name == 'wpPreview') {
 	    continue;
 	} else if (l[i].name == 'wpDiff') {
 	    continue;
 	}
 	l[i].type = 'hidden';
 	newform.appendChild(l[i]);
     }
     newform.name = form.name;
     newform.method = form.method;
     newform.id = form.id;
     newform.action = form.action;
     document_content().innerHTML += '<br />'+SubmitEditForm;
     document_content().appendChild(newform);
     // Submit the form
     newform.submit();
 }
 
 // -----------------------------------------------------------------------------
 // Add revert buttons to the page
 // -----------------------------------------------------------------------------
 function AddRevertButtons() {
     var l, article = '', vandal;
     // Add 'revert' links to a diff page
     l = document_content().getElementsByTagName('td');
     for (i = 0; i < l.length; i++) {
 	if (l[i].className == 'diff-otitle') {
 	    article = l[i].getElementsByTagName('a')[0]
 		.href.split('&')[0].replace(/[^\/]*\/\/[^\/]*/, '');
 	} else if (l[i].className == 'diff-ntitle') {
 	    var toplink = l[i].getElementsByTagName('a')[0].href;
 	    // vandal = l[i].getElementsByTagName('a')[1].title.split(':')[1];
 	    vandal = l[i].getElementsByTagName('a')[2].innerHTML;
 	    var tt = l[i].innerHTML;
 	    var nn = tt.indexOf('</a>) <br') + tt.indexOf('</A>) <BR') + 1; // XXX: WOW HACK!!!!
 	    var n2 = tt.indexOf('</span><br />') + tt.indexOf('</SPAN><BR />') 
 		+ tt.indexOf('</span><br>') + tt.indexOf('</SPAN><BR>') +3;
 	    var n3 = tt.indexOf('<br /><br />') + tt.indexOf('<BR /><BR />') 
 		+ tt.indexOf('<br><br>') + tt.indexOf('<BR><BR>') +3;
 	    if (n2 > 0) { nn = n2 + 6; x = ":"; }
 	    if (n3 > 0) { nn = n3 + 3; x = ","; }
 	    if (nn >= 0 && article != '' && toplink.indexOf('oldid=') == -1) {
 		var token = hex_md5(article + vandal + document.cookie);
 		l[i].innerHTML = tt.substring(0, nn + 5) 
 		    + '&nbsp;&nbsp;&nbsp;<strong>'
 		    + '[<a href="' +article+ '&fakeaction=rollback&reason=reset&vandal=' +vandal
 		    + '&token=' +token+ '">' +LinkRollback+ '</a>]'
 		    + '[<a href="' +article+ '&fakeaction=rollback&reason=vandal&vandal=' +vandal
 		    + '&token=' +token+ '">' +LinkVandal+ '</a>]'
 		    + '[<a href="' +article+ '&fakeaction=rollback&reason=weird&vandal=' +vandal
 		    + '&token=' +token+ '">' +LinkWeird+ '</a>]'
 		    + '[<a href="' +article+ '&fakeaction=rollback&reason=disk&vandal=' +vandal
 		    + '&token=' +token+ '">' +LinkDisk+ '</a>]'
 		    + '</strong> '+ tt.substring(nn + 5);
 	    }
 	}
     }
     // Add 'revert' links to a contributions page
     if (location.href.indexOf(':Contributions') != -1) {
 	var c = document.getElementById('contentSub');
 	var a = c.getElementsByTagName('a');
 	if (a.length >= 2) {
 	    vandal = a[0].innerHTML;
 	} else {
 	    vandal = c.innerHTML.replace(/ \(.*/, '').replace(/.* /, '');
 	}
 	l = document_content().getElementsByTagName('li');
 	for (i = 0; i < l.length; i++) {
 	    var t = l[i].innerHTML;
 	    // If we are already a sysop on this wiki, abort
 	    if (t.indexOf('>' + LinkRollback + '</a>]') != -1)
 		break;
 	    if (t.indexOf('<strong> (') != -1) {
 		var token = hex_md5(article + vandal + document.cookie);
 		article = l[i].getElementsByTagName('a')[0]
 		    .href.split('&')[0].replace(/[^\/]*\/\/[^\/]*/, '');
 		l[i].innerHTML += ' [<a href="' +article+ '&fakeaction=rollback&vandal=' +vandal
 		    + '&token=' +token+ '">' + LinkRollback + '</a>]';
 	    }
 	}
     }
 }
 
 function AddLoadHint() {
     var elem = document.getElementById('contentSub');
     if (! elem) return;
     elem.innerHTML += " (loaded)";
 }
 
 // -----------------------------------------------------------------------------
 // Modify the page once it is loaded
 // -----------------------------------------------------------------------------
 if (window.addEventListener) {
   window.addEventListener("load", TryPerformRevert, false);
   window.addEventListener("load", AddRevertButtons, false);
   window.addEventListener("load", AddLoadHint, false);
 } else if (window.attachEvent) {
   window.attachEvent("onload", TryPerformRevert);
   window.attachEvent("onload", AddRevertButtons);
   window.attachEvent("onload", AddLoadHint);
 }