btn.lastClick = {
    X: 0,
    Y: 0
};
addEventListener("mouseup", function(e) {
    if (e && e.button == 0 && e.view.top == content) {
        var lc = btn.lastClick;
        lc.X = e.clientX;
        lc.Y = e.clientY;
    }
}, false);

var safeHTMLParser = function(code, base) {
    var gUnescapeHTML = Cc["@mozilla.org/feed-unescapehtml;1"].getService(Ci.nsIScriptableUnescapeHTML);
    var doc = document.implementation.createDocument(xhtmlns, "html", null);
    var body = document.createElementNS(xhtmlns, "body");
    doc.documentElement.appendChild(body);
    body.appendChild(gUnescapeHTML.parseFragment(code, false, base ? makeURI(base) : null, body));
    return doc;
};

var createWindow = function(text, status, title, id, pos, size){
    var win = document.commandDispatcher.focusedWindow.top == content ? document.commandDispatcher.focusedWindow : content;
    var doc = win.document, wId = 'ujs_window'+(id || ''), w = doc.getElementById(wId);
    var keyDown = function(e){if(!e.shiftKey && !e.ctrlKey && !e.altKey && e.keyCode == 27)doc.getElementById(wId).closeWin()};
    if(w)w.closeWin();
    w = doc.createElement('div');
    w.setAttribute('style', 'position:fixed;display:block;visibility:hidden;left:0;top:0;width:auto;height:auto;border:1px solid gray;padding:3px;margin:0;z-index:99999;overflow:hidden;cursor:move;'+(typeof w.style.borderRadius === 'string' ? 'background-color:#f3f5f7;padding-top:4px;border-radius:4px;box-shadow:0 0 12px rgba(0,0,0,.4);' : 'background:-o-skin("Window Skin");'));
    w.id = wId;
    w.closeWin = function(){
        doc.removeEventListener('keydown', keyDown, false);
        this.parentNode.removeChild(this);
    };
    w.addEle = function(str, style){
        var ele = doc.createElement('div');
        ele.setAttribute('style', style);
        if(str){
            ele.innerHTML = str;
            for(var el, all = ele.getElementsByTagName('*'), i = all.length; i--{
                el = all[i];
                if(/^(script|frame|iframe|applet|embed|object)$/i.test(el.nodeName)){
                    el.parentNode.removeChild(el);
                }else{
                    for(var att = el.attributes, j = att.length; j--{
                        if(/^on[a-z]+$/i.test(att[j].name))att[j].value = '';
                    }
                }
            }
        };
        return this.appendChild(ele);
    };
    var img = doc.createElement('div');
    img.setAttribute('style', 'display:block;float:right;width:18px;height:18px;padding:0;margin:0;border:none;cursor:pointer;background-image:url("data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABIAAAASCAQAAAD8x0bcAAAAZElEQVR42mNgGNyAGQixsVGU/AdCXjCbHczmxKaMFywlAlWiw6DAwIZNmQhYGqJEDWoqFiAGVmKKTwk73CRJ/Ep0GIyhbsPpO4hbIG4TwKaMk0EZ7hYBBk1cvmNDEmbDrmSwAADE8h10+qICXwAAABl0RVh0U29mdHdhcmUAQWRvYmUgSW1hZ2VSZWFkeXHJZTwAAAAASUVORK5CYII=");background:-o-skin("Caption Close Button Skin");');
    img.title = (win.navigator.language.indexOf('ru') == 0) ? '\u0417\u0430\u043A\u0440\u044B\u0442\u044C' : 'Close';
    img.addEventListener('click', function(){this.parentNode.closeWin()}, false);
    w.appendChild(img);
    w.addEle(title, 'display:table;color:#000;font:16px Times New Roman;width:auto;height:auto;padding:0;margin:0 2px;cursor:text;');
    var cnt = w.addEle(text, 'display:block;border:1px solid #aaa;margin:2px 0 1px 0;padding:4px;background-color:#fafcfe;color:#000;font:14px Times New Roman;width:240px;height:120px;overflow:auto;cursor:text;');
    w.addEle(status, 'display:table;color:#555;font:10px Times New Roman;width:auto;height:auto;padding:0;margin:0 2px;cursor:text;');
    w.addEventListener('mousedown', function(e){
        if(e.target == w){
            e.preventDefault();
            var grabX = e.clientX, grabY = e.clientY, origX = parseInt(w.style.left), origY = parseInt(w.style.top);
            var mouseMove = function(ev){
                w.style.left = origX+ev.clientX-grabX+'px';
                w.style.top = origY+ev.clientY-grabY+'px';
            };
            doc.addEventListener('mousemove', mouseMove, false);
            doc.addEventListener('mouseup', function(){doc.removeEventListener('mousemove', mouseMove, false)}, false);
        }
    }, false);
    doc.documentElement.appendChild(w);

    if(size){
        cnt.style.height = size.height;
        cnt.style.width = size.width;
    }else{
        for(var i = 3; i < 10; i++){
            if(cnt.scrollHeight > cnt.offsetHeight || cnt.scrollWidth > cnt.offsetWidth){
                cnt.style.height = 50*i+'px';
                cnt.style.width = 100*i+'px';
            }else break;
        }
    };
    var docEle = doc.compatMode == 'CSS1Compat' ? doc.documentElement : doc.body;
    var mX = docEle.clientWidth-w.offsetWidth, mY = docEle.clientHeight-w.offsetHeight;
    if(mX < 0){cnt.style.width = parseInt(cnt.style.width)+mX+'px'; mX = 0};
    if(mY < 0){cnt.style.height = parseInt(cnt.style.height)+mY+'px'; mY =0};
    var hW = parseInt(w.offsetWidth/2);
    w.style.left = (pos && pos.X < mX+hW ? (pos.X > hW ? pos.X-hW : 0) : mX)+'px';
    w.style.top = (pos && pos.Y+10 < mY ? pos.Y+10 : mY)+'px';
    w.style.visibility = 'visible';
    doc.addEventListener('keydown', keyDown, false);
};

var getSel = function (w) {
    var s, d = w.document;
    if (d.selection) {
        var r = d.selection.createRange();
        s = r ? r.text : ''
    } else {
        s = d.getSelection().toString();
        if (!s) {
            var e, t = d.getElementsByTagName('textarea'), u = d.getElementsByTagName('input'), i = t.length;
            while(e = (i > 0) ? t[--i] : u[-i--])try{
                if (e.offsetHeight > 0 && (s = e.value.substring(e.selectionStart, e.selectionEnd))) break
            }catch(x){}
        }
    };
    if (!s) for (var j = 0, f; f = w.frames[j]; j++) {
        try {
            if (s = getSel(f)) break
        } catch(x) {}
    };
    return s
};

var ujs_google_translate = function (dir){
    var win = content, lng = win.navigator.language.slice(0, 2), txt = getSel(win);
    if (txt) {
        var xhr = new XMLHttpRequest();
        var encTxt = 'text=' + encodeURIComponent(txt), post = encTxt.length > 1024, l = dir.split('|');
        var url = 'https://translate.google.com/?' + (post ? '' : encTxt + '&') + 'sl=' + l[0] + '&tl=' + l[1] + '&hl=' + lng + '&eotf=0&ujs=gtt';

        xhr.open(post ? 'POST' : 'GET', url, true);
        if(post)xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
        xhr.onreadystatechange = function() {
            try{
                if (xhr.readyState == 4 && xhr.status == 200) {
                    var result = '', status = '', tmp = safeHTMLParser(xhr.responseText, url);
                    var r = tmp.querySelector('#result_box');
                    if (r) {
                        var p = r.getElementsByTagName('span');
                        for(var i = 0, n; n = p[i]; i++){
                            n.setAttribute('style', 'background-color:inherit;color:inherit;font-size:inherit;font-family:Times,serif;');
                        };
                        result = r.innerHTML;
                    };
                    var otf = tmp.querySelector('#gt-otf-switch');
                    var getQuery = function(s, q){var a = s.match(new RegExp('(^|[&?])'+q+'[^&]+)')); return a ? a[2] : ''};
                    if(otf){
                        status = (getQuery(otf.href, 'sl')+' -\u203A '+getQuery(otf.href, 'tl')).toUpperCase();
                    };
                    createWindow(result, status, '<a href="'+url.replace(/&/g,'&amp;')+'" target="_blank" style="display:inline;padding:0;margin:0;text-decoration:none;border:none;color:#009;font:16px Times New Roman;">Google Translate</a>', '_gt', btn.lastClick);
                }
            } catch (x){};
        };
        xhr.send(post ? encTxt : null);
    } else {
        win.open('http://translate.google.com/translate?u='+escape(win.location.href)+'&hl='+lng+'&langpair='+dir+'&tbb=1');
    };
};

btn.onclick = function(e){if(e.button == 0)ujs_google_translate('auto|ru')};

var contextMenu = document.getElementById("contentAreaContextMenu");
var nextEleMenu = document.getElementById("context-inspect");

var menuId = "context-ext-google-translate";
var menuItem = document.getElementById(menuId);
if (menuItem) {
    contextMenu.removeChild(menuItem.nextElementSibling);
    contextMenu.removeChild(menuItem.nextElementSibling);
    contextMenu.removeChild(menuItem);
};

menuItem = document.createElement("menuitem");
menuItem.setAttribute("id", menuId);
menuItem.setAttribute("label", "Перевести на русский");
menuItem.setAttribute("class", "menuitem-iconic");
menuItem.setAttribute("image", "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAIAAACQkWg2AAAABnRSTlMAAAAAAABupgeRAAABBUlEQVR4Ac2RMU4DMRREB2MqihQpAkUaqnAduuQw4Sx03CGcJYIiDYqQ0lCsZ77535ZFcgAkRuPvV7zd/dLiz3N1PFb8hmRckrfELZrF9ONQ1B6Yz0MyM7S0O6zGkVprh/3+Kw/JzkHSpRpJKZkpr9fYbOx0cjVsCbWG31oHBM9mtt0q73ZcrdLhAMlYQKkUI22aqsNo8HKZAMQhvVaKSHWj2Q2aPU3mJQFY7nuHyvYFduP83WF3AJRfcPNYnr/Lp1G1uK4m9sno1LaUbnX/htf8BNzoneUD5NhjvLCMhURQSQ93QCZwXYjFwg3I0NZKrvoknQPMIHkt/jRAQKMeG2yX89/mB4EJbKbZxIhFAAAAAElFTkSuQmCC");
menuItem.addEventListener("command", function(){ujs_google_translate('auto|ru')}, false);
contextMenu.insertBefore(menuItem, nextEleMenu);

menuItem = document.createElement("menuitem");
menuItem.setAttribute("label", "Перевести на английский");
menuItem.setAttribute("class", "menuitem-iconic");
menuItem.setAttribute("image", "data:image/png;base64,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");
menuItem.addEventListener("command", function(){ujs_google_translate('auto|en')}, false);
contextMenu.insertBefore(menuItem, nextEleMenu);

contextMenu.insertBefore(document.createElement("menuseparator"), nextEleMenu);

addEventListener('keydown', function (e){
if(e.shiftKey && !e.ctrlKey && e.altKey && e.keyCode == 84)ujs_google_translate('auto|ru');
}, false);