(async (id, func) => { // дополнительные клики на downloads-button, PanelUI-menu для custom_script_win.js
	await window.delayedStartupPromise;
	var btn = document.getElementById("downloads-button"), pui = document.getElementById("PanelUI-menu-button");
	if (!btn) return; btn.tooltipText = GetDynamicShortcutTooltipText(btn.id) +`

ПКМ:	Сохранить как единый html
	всё | выделенное на странице
…Shift	Обзор папки [Загрузки]\n
Ролик:	Сохранить как файл .txt
…Shift	Сайт: графика Вкл/Выкл\n
СКМ или Тащить рисунок вправо:
…cохранить в [Загрузки]/_Images\n
Alt⇧S	нажать кнопку SingleSave` // нет SingleSave - выполнить save()

pui.tooltipText =
`Браузер Firefox, версия ${Services.appinfo.platformVersion}\n
Правый клик:	⇲ Свернуть окно
…Alt		Персонализация\n
Ролик:		Закрыть браузер`

	var addDestructor = nextDestructor => {
		var {destructor} = ucf[id];
		ucf[id].destructor = () => {
			try {destructor();} catch(ex) {Cu.reportError(ex);}
			nextDestructor();
		}
	},
	showInStatusPanel = (info, time = 5000) => {
		var win = Services.wm.getMostRecentWindow("navigator:browser"); StatusPanel = win.StatusPanel;
		if (StatusPanel.update.tid)
			clearTimeout(StatusPanel.update.tid)
		else {
			var {update} = StatusPanel;
			StatusPanel.update = () => {};
			StatusPanel.update.ret = () => {
				StatusPanel.update = update;
				StatusPanel.update();
			}
		}
		StatusPanel.update.tid = setTimeout(StatusPanel.update.ret, time);
		StatusPanel._label = info;
	},
	saveSelectionToTxt = async () => { // сохранить страницу или выделенный текст как файл .txt
		var splice = saveURL.length == 10;
		var msgName = id + ":Save:GetSelection";
		var receiver = msg => {
			var title = document.title || gBrowser.selectedTab.label;
			var args = [
				"data:text/plain," + encodeURIComponent(gBrowser.currentURI.spec + "\n\n" + msg.data),
				title.replace(/[:\\\/<>?*|"]+/g,'_').replace(/\s+/g,' ').slice(0, 100).trim() + '_' + new Date().toLocaleString('ru').replace(', ','-').replace(/:/g, '։') + '.txt',
				null, false, true, null, window.document
			];
			splice && args.splice(5, 0, null);
			saveURL(...args) && showInStatusPanel("√ текст сохранён: " + title.slice(0, 60));
		}
		messageManager.addMessageListener(msgName, receiver);
		addDestructor(() => messageManager.removeMessageListener(msgName, receiver));
		var func = fm => {
			var res, fed, win = {}, fe = fm.getFocusedElementForWindow(content, true, win);
			var sel = (win = win.value).getSelection();
			if (sel.isCollapsed) {
				var ed = fe && fe.editor;
				if (ed && ed instanceof Ci.nsIEditor)
					sel = ed.selection, fed = fe;
			}
			if (sel.isCollapsed)
				fed && fed.blur(), docShell.doCommand("cmd_selectAll"),
				res = win.getSelection().toString(), docShell.doCommand("cmd_selectNone"),
				fed && fed.focus();
			res = res || sel.toString();
			/\S/.test(res) && sendAsyncMessage("saveSelectionToTxt", res);
		}
		var url = "data:;charset=utf-8," + encodeURIComponent(`(${func})`.replace("saveSelectionToTxt", msgName)) + '(Cc["@mozilla.org/focus-manager;1"].getService(Ci.nsIFocusManager));';
		(saveSelectionToTxt = () => gBrowser.selectedBrowser.messageManager.loadFrameScript(url, false))();
	}, // end

	save = async () => { // автор: Лекс, правка: Dumby, Dobrov
		var msgName = id + "ucfDwnldsBtnSaveSnapshotToHTML";
		if (typeof IOUtils != "object") { // Firefox 78 ESR
			var {OS} = ChromeUtils.import("resource://gre/modules/osfile.jsm");
			var PathUtils = {join: (...args) => OS.Path.join(...args)};
			var IOUtils = {writeUTF8: (path, txt) => OS.File.writeAtomic(path, new TextEncoder().encode(txt))};
		}
		var write = IOUtils.writeUTF8 ? "writeUTF8" : "writeAtomicUTF8";

		var Title = (type) => { // получить заголовок (без обрезки, если type не указан) или домен (type <0)
			var title = (document.title || gBrowser.selectedTab.label);
			if ( !type ) return title; // заголовок
			if ( type > 0 ) return title.slice(0, type).replace(/ \| Форум Mozilla Россия$| — Mozilla Firefox|[\\\/?*\"'`]+/g,'').replace(/\s+/g,' ').replace(/[|<>]+/g,'_').replace(/:/g,'։').trim(); // ограничить длину имени
			var host = (/^file:\/\//.test(gURLBar.value)) ? '' : gURLBar.value.replace(/^.*url=|https?:\/\/|www\.|\/.*/g,'');
			return host.replace(/^ru\.|^m\.|forum\./,'').replace(/^club\.dns/,'dns');
		}
		var msgListener = async msg => {
			var [fileContent, fileName] = msg.data, dir;
			try {dir = prefs.getComplexValue("browser.download.dir", Ci.nsIFile);} catch {dir = dirsvc.get("DfltDwnld", Ci.nsIFile);}
			var arr = prefs.getStringPref("ucf_save.dirs", "_Web||_Images|0").split('|').slice(0, 2); // [Загрузки]/папки ucf_save/файл
			arr[1] = (arr[1] == "0") ? Title(100) : (arr[1] == "1") ? Title(-1) : ""; // имя вкладки или домен
			arr.forEach(dir.append); // ucf_save.dirs: путь для html|имя или домен|папка графики|имя вкладки
			dir.exists() && dir.isDirectory() || dir.create(dir.DIRECTORY_TYPE, 0o777); // создать папку, если не существует…
			var file = Cc["@mozilla.org/file/local;1"].createInstance(Ci.nsIFile);
			file.initWithPath(dir.path);
			dir.append(fileName);
			await IOUtils[write](dir.path, fileContent) && showInStatusPanel("√ страница записана: " + fileName.slice(0, 60));
			var d = await Downloads.createDownload({ source: "about:blank", target: FileUtils.File(dir.path)}); // Fake download
			(await Downloads.getList(Downloads.ALL)).add(d);
			d.refresh(d.succeeded = true); // кнопка Загрузки мигает
		}
		messageManager.addMessageListener(msgName, msgListener);
		addDestructor(() => messageManager.removeMessageListener(msgName, msgListener));

		var svc = 'globalThis.Services || ChromeUtils.import("resource://gre/modules/Services.jsm").Services';
		var url = "data:;charset=utf8," + encodeURIComponent(`(${func})(${svc});`.replace("%MSG_NAME%", msgName));
		(save = () => gBrowser.selectedBrowser.messageManager.loadFrameScript(url, false))();
	}, // end save

	listener = e => { var trg = e.target; // Downloads Clicks
		if (e.button == 1) {
			if (e.shiftKey) { // СКМ + Shift
				if ( prefs.getIntPref("permissions.default.image", 1) == 1)
					prefs.setIntPref("permissions.default.image", 2), trg.style.filter = "hue-rotate(180deg) brightness(95%)"
				else
					prefs.setIntPref("permissions.default.image", 1), trg.style.filter = "";
				BrowserReload();
			} else	// СКМ Click
				saveSelectionToTxt(); // сохранить .txt
		} else if (e.button == 2) {
			if (e.shiftKey)
				Downloads.getSystemDownloadsDirectory().then(path => FileUtils.File(path).launch(), Cu.reportError) // Обзор папки «Загрузки»
			else	// ПКМ Click
				save(); // Single HTML
		}
	},
	listener_pui = e => { // PanelUI-menu Clicks
		if (e.button == 1) e.shiftKey // middle
			? null : close()
		else if (e.button == 2) if (e.altKey) return
		else event.stopPropagation(), window.minimize();
	}, // end Clicks

	keydown_win = e => { // нажатие клавиш
		if (!(e.keyCode == 83 && e.shiftKey && e.altKey)) return;
		var singlesave = document.getElementById("_531906d3-e22f-4a6c-a102-8057b88a1a63_-browser-action"); // SingleSave
		singlesave ? singlesave.click() : save(); // имитировать клик по кнопке, используя её ID
	},
	{prefs, dirsvc} = Services, tmax = btn.tooltipText.split("\n")[0].length, dw;
	btn.setAttribute("context", "event.stopPropagation()");
	prefs.setBoolPref("browser.download.autohideButton", false); // не скрывать кнопку Загрузки

	btn.addEventListener("click", listener), pui.addEventListener("click", listener_pui);
		window.addEventListener("keydown", keydown_win);
	var ucf = window.ucf_custom_script_win || window.ucf_custom_script_all_win;
	ucf[id] = {destructor() {
		btn.removeEventListener("click", listener), pui.removeEventListener("click", listener_pui);
		window.removeEventListener("keydown", keydown_win);
	}};
	ucf.unloadlisteners.push(id);

})("downloads-button-click-listener", ({io, focus}) => {

	var resolveURL = function (url, base) {
		try { return io.newURI(url, null, io.newURI(base)).spec;
		} catch {}
	},
	getSelWin = function (w) {
		if (w.getSelection().toString()) return w;
		for (var i = 0, f, r; f = w.frames[i]; i++) {
			try { if (r = getSelWin(f)) return r;
			} catch(e) {}
		}
	},
	encodeImg = function (src, obj) {
		var canvas, img, ret = src;
		if (/^https?:\/\//.test(src)) {
			canvas = doc.createElement('canvas');
			if (!obj || obj.nodeName.toLowerCase() != 'img') {
				img = doc.createElement('img');
				img.src = src;
			} else
				img = obj;
			if (img.complete) try{
				canvas.width = img.width;
				canvas.height = img.height;
				canvas.getContext('2d').drawImage(img, 0, 0);
				ret = canvas.toDataURL((/\.jpe?g/i.test(src) ? 'image/jpeg' : 'image/png'));
			} catch (e) {};
			if (img != obj) img.src = 'about:blank';
		};
		return ret;
	},
	toSrc = function (obj) {
		var strToSrc = function (str) {
			var chr, ret = '', i = 0, meta = {'\b': '\\b', '\t': '\\t', '\n': '\\n', '\f': '\\f', '\r': '\\r', '\x22' : '\\\x22', '\\': '\\\\'};
			while (chr = str.charAt(i++)) {
				ret += meta[chr] || chr;
			};
			return '\x22' + ret + '\x22';
		},
		arrToSrc = function (arr) {
			var ret = [];
			for (var i = 0; i < arr.length; i++) {
				ret[i] = toSrc(arr[i]) || 'null';
			};
			return '[' + ret.join(',') + ']';
		},
		objToSrc = function (obj) {
			var val, ret = [];
			for (var prop in obj) {
				if (obj.hasOwnProperty(prop) && (val = toSrc(obj[prop]))) ret.push(strToSrc(prop) + ': ' + val);
			};
			return '{' + ret.join(',') + '}';
		};
		switch (Object.prototype.toString.call(obj).slice(8, -1)) {
			case 'Array': return arrToSrc(obj);
			case 'Boolean':
			case 'Function':
			case 'RegExp': return obj.toString();
			case 'Date': return 'new Date(' + obj.getTime() + ')';
			case 'Math': return 'Math';
			case 'Number': return isFinite(obj) ? String(obj) : 'null';
			case 'Object': return objToSrc(obj);
			case 'String': return strToSrc(obj);
			default: return obj ? (obj.nodeType == 1 && obj.id ? 'document.getElementById(' + strToSrc(obj.id) + ')' : '{}') : 'null';
		}
	},
	mainWin = {};
	focus.getFocusedElementForWindow(content, true, mainWin);
	mainWin = mainWin.value;

	var selWin = getSelWin(mainWin), win = selWin || mainWin, doc = win.document, loc = win.location;
	var ele, pEle, clone, reUrl = /(url\(\x22)(.+?)(\x22\))/g;

	if (selWin) {
		var rng = win.getSelection().getRangeAt(0);
		pEle = rng.commonAncestorContainer;
		ele = rng.cloneContents();
	} else {
		pEle = doc.documentElement;
		ele = (doc.body || doc.getElementsByTagName('body')[0]).cloneNode(true);
	};
	while (pEle) {
		if (pEle.nodeType == 1) {
			clone = pEle.cloneNode(false);
			clone.appendChild(ele);
			ele = clone;
		};
		pEle = pEle.parentNode
	};
	var sel = doc.createElement('div');
	sel.appendChild(ele);

	for (var el, all = sel.getElementsByTagName('*'), i = all.length; i--;) {
		el = all[i];
		if (el.style && el.style.backgroundImage) el.style.backgroundImage = el.style.backgroundImage.replace(reUrl, function (a, prev, url, next) {
			if (!/^[a-z]+:/.test(url)) url = resolveURL(url, loc.href);
			return prev + encodeImg(url) + next;
		});
		switch (el.nodeName.toLowerCase()) {
			case 'link':
			case 'style':
			case 'script': el.parentNode.removeChild(el); break;
			case 'a':
			case 'area': if (el.hasAttribute('href') && el.getAttribute('href').charAt(0) != '#') el.href = el.href; break;
			case 'img':
			case 'input': if (el.hasAttribute('src')) el.src = encodeImg(el.src, el); break;
			case 'audio':
			case 'video':
			case 'embed':
			case 'frame':
			case 'iframe': if (el.hasAttribute('src')) el.src = el.src; break;
			case 'object': if (el.hasAttribute('data')) el.data = el.data; break;
			case 'form': if (el.hasAttribute('action')) el.action = el.action; break;
		}
	};
	var head = ele.insertBefore(doc.createElement('head'), ele.firstChild), meta = doc.createElement('meta'), sheets = doc.styleSheets, title = doc.getElementsByTagName('title')[0];
	meta.httpEquiv = 'content-type';
	meta.content = 'text/html; charset=utf-8';
	head.appendChild(meta);
	if (title) head.appendChild(title.cloneNode(true));

	head.copyScript = function (unsafeWin) {
		if ('$' in unsafeWin) return;
		var f = doc.createElement('iframe');
		f.src = 'about:blank';
		f.setAttribute('style', 'position:fixed;left:0;top:0;visibility:hidden;width:0;height:0;');
		doc.documentElement.appendChild(f);
		var str, script = doc.createElement('script');
		script.type = 'text/javascript';
		for (var name in unsafeWin) {
			if (name in f.contentWindow || !/^[a-zA-Z_$][0-9a-zA-Z_$]*$/.test(name)) continue;
			try {
				str = toSrc(unsafeWin[name]);
				if (!/\{\s*\[native code\]\s*\}/.test(str)) {
					script.appendChild(doc.createTextNode('var ' + name + ' = ' + str.replace(/<\/(script>)/ig, '<\\/$1') + ';\n'));
				}
			} catch (e) {};
		};
		f.parentNode.removeChild(f);
		if (script.childNodes.length) this.nextSibling.appendChild(script);
	};
	head.copyScript(win.wrappedJSObject || win);

	head.copyStyle = function (s) {
		if (!s) return;
		var style = doc.createElement('style');
		style.type = 'text/css';
		if (s.media && s.media.mediaText) style.media = s.media.mediaText;
		try {
			for (var i = 0, rule; rule = s.cssRules[i]; i++) {
				if (rule.type != 3) {
					if((!rule.selectorText || rule.selectorText.indexOf(':') != -1) || (!sel.querySelector || sel.querySelector(rule.selectorText))) {
						var css = !rule.cssText ? '' : rule.cssText.replace(reUrl, function (a, prev, url, next) {
							if (!/^[a-z]+:/.test(url)) url = resolveURL(url, s.href || loc.href);
							if(rule.type == 1 && rule.style && rule.style.backgroundImage) url = encodeImg(url);
							return prev + url + next;
						});
						style.appendChild(doc.createTextNode(css + '\n'));
					}
				} else {
					this.copyStyle(rule.styleSheet);
				}
			}
		} catch(e) {
			if (s.ownerNode) style = s.ownerNode.cloneNode(false);
		};
		this.appendChild(style);
	};
	for (var j = 0; j < sheets.length; j++) head.copyStyle(sheets[j]);
	head.appendChild(doc.createTextNode('\n'));

	var doctype = '', dt = doc.doctype;
	if (dt && dt.name) {
		doctype += '<!DOCTYPE ' + dt.name;
		if (dt.publicId) doctype += ' PUBLIC \x22' + dt.publicId + '\x22';
		if (dt.systemId) doctype += ' \x22' + dt.systemId + '\x22';
		doctype += '>\n';
	};

	var fileName = selWin ? win.getSelection().toString() : (title && title.text ? title.text : loc.pathname.split('/').pop());
	fileName = fileName.replace(/[:\\\/<>?*|"]+/g, '_').replace(/\s+/g, ' ').slice(0, 100).trim();
	fileName += "_" + new Date().toLocaleDateString('ru', {day: 'numeric', month: 'numeric', year: '2-digit'}) +'-'+ new Date().toLocaleTimeString().replace(/:/g, "։");
	if (!/\.html?$/.test(fileName)) fileName += '.html';

	sendAsyncMessage("%MSG_NAME%", [doctype + sel.innerHTML +'\n<a href='+ (loc.protocol != 'data:' ? loc.href : 'data:uri') +'><small><blockquote>источник: '+ new Date().toLocaleString("ru") +'</blockquote></small></a>', fileName]);

}); // END hookClicks

@-moz-document regexp("moz-extension:\/\/.+\/sidebar\/sidebar\.html.*") {
:root,
#background {
    background-color: var(--browser-background, var(--tabbar-bg, #1c1b22)) !important;
}
}

#PopupSearchAutoComplete .search-panel-current-engine, 
#PopupSearchAutoComplete .search-one-offs {
	background-color: hsla(0,0%,80%,.35) !important;
}

.searchbar-engine-one-off-item:not(#urlbar-anon-search-settings-compact) {
    background: linear-gradient(transparent 15%, var(--panel-separator-color) 15%, var(--panel-separator-color) 85%, transparent 85%);
    background-size: 1px auto;
    background-repeat: no-repeat;
    background-position: right center;
    background-clip: padding-box;
    color: var(--panel-disabled-color);
}
.searchbar-engine-one-off-item:not(#urlbar-anon-search-settings-compact),
.search-panel-one-offs-header {
    border-bottom: 1px solid var(--panel-separator-color);
}
.search-panel-one-offs {
    height: auto !important;
}
.search-one-offs .searchbar-separator {
    display: none;
}
#PopupSearchAutoComplete {
    padding-bottom: 0 !important;
}
.search-setting-button {
    border-top: none !important;
}
#urlbar .searchbar-engine-one-off-item {
    margin-inline-end: 0 !important;
}
#urlbar .search-one-offs {
    padding-bottom: 0 !important;
}
#urlbar .search-panel-header {
    display: none !important;
}
#urlbar .search-one-offs {
    padding-block: 0 !important;
}

#context-navigation:not([hidden]) ~ :is(#context-viewimage,#context-sep-setbackground),
#context-saveimage[hidden] ~ :is(#context-copyimage-contents,#context-copyimage,#context-sendimage) {
    display: none !important;
}