GM - Flickr - Flickr Commented On (HTTPS) - v.2.29 - Tweak 2025 EXCLUDE

// ==UserScript==
// @name           Flickr Commented On (HTTPS) - v.2.29 - Tweak 2026 for POOL SM groups_pool.gne? - TEST EXCULDE / FIX Blockind Firefox Error Popup
// @description    Shows whether or not you have commented on a photo - OK TAMPERMONKEY (pb semicolon) - EXCLUDE FAV/ALB etc 2019
// @icon           https://icons.duckduckgo.com/ip2/flickr.com.ico
// @include        http://www.flickr.com/*
// @match          http://www.flickr.com/*

// @include http*://*flickr.com/*

// @exclude https://www.flickr.com/photos/*/galleries/*

// 2025.01
// @include https://www.flickr.com/path=*

// 2019
// @exclude    http*://*flickr.com/photos/*/favorites*
// @exclude    http*://*flickr.com/photos/*/favorites/*
// @exclude    http*://*flickr.com/photos/*/albums*
// @exclude    http*://*flickr.com/groups?view=tn
// @exclude    http*://*flickr.com/groups?view=ls

// @version        2.29
// @author         Brenton Cleeland (http://www.flickr.com/people/sesh00/)
// @date           Jul 3, 2007
// @modified       Jul 18, 2013
// @contributor    Alesa Dam (http://www.flickr.com/people/alesadam/)
// @contributor    Martin Heimburger (http://www.flickr.com/people/vispillo/)
// @contributor    Bennie Hebbelynck (http://www.flickr.com/people/hebbervus/)
// @icon           http://s3.amazonaws.com/uso_ss/icon/82360/large.png?1326790459
// @downloadURL    https://userscripts.org/scripts/source/82360.user.js
// @updateURL      https://userscripts.org/scripts/source/82360.meta.js
// @run-at     document-end
// @grant      GM_log
// @grant      GM_addStyle
// @grant      GM_xmlhttpRequest
// ==/UserScript==
//
// Icon based on a Webdesigner Depot (http://www.webdesignerdepot.com/) icon from the Primo set. Downloaded from http://www.iconfinder.com/icondetails/40747/128/chat_comments_references_talk_icon
//
//

(function () {
// shows the number of comments you left on the photo
SHOW_COMMENT_COUNT=true;

var retrievingButtonImg = "data:image/png,%89PNG%0D%0A%1A%0A%00%00%00%0DIHDR%00%00%00%18%00%00%00%18%08%06%00%00%00%E0w%3D%F8%00%00%00%01sRGB%00%AE%CE%1C%E9%00%00%00%04gAMA%00%00%B1%8F%0B%FCa%05%00%00%00%20cHRM%00%00z%26%00%00%80%84%00%00%FA%00%00%00%80%E8%00%00u0%00%00%EA%60%00%00%3A%98%00%00%17p%9C%BAQ%3C%00%00%00%18tEXtSoftware%00Paint.NET%20v3.08er%9C%E1%00%00%01%B8IDATHK%EDTK%ABAa%14u%7F%A2%01%C5%84%92%09e%A4%94%81W%5E)%8F%89%01I%14%26%1E%09%11%C9%CC%C8%1F0%95%BC%9F%13%A5%A4%E5%EE%5D%E4r%CEu%DC%9B%EE%BDuw%9D%3A%F5%ED%B3%D6%DAk%AF%EF%BC%E1%BDd%AF%2C%22xe%C9%5E%09%CE%EE%FC%13%3Cr%E0%E7%2C%DA%EDv%C8%E7%F3p8%1C%B0%D9l%A2O*%95%C2r%B9%14%1DDt%82l6%8Bv%BB%8D%C3%E1%F0%A9%0B%DDn%17%E1pX%B4O%90%60%BF%DF%C3n%B7%E3x%3C%82%26%D9n%B7%D8l6X%ADVX%2C%16%98%CDf%98L%26%FCP%C5b1%0C%87CA!%82%04%04%16%0C%06%F9%03z_%AF%D7w%E0%A3%D1%88A%03%81%00%9CN'%FA%FD%FE%D7%08%08%9C%3C%26%E5%D3%E9%14%E3%F1%18g%F0%C1%60%00%8F%C7%C3%13X%2C%16%E9%04%D7%16%91%3D%F3%F9%FC%02%EE%F7%FB%E1%F5z%E1v%BB%D9%C6h4%8AV%AB%85H%24%02%A3%D1xG%F2p%C9%B4%87%EB%22%C5%9DN%87%03%40%C0%CDf%13%B9%5C%0E%B5Z%0D%3E%9F%0FZ%AD%F6C%BF(%C19%A6%A4%F2%1C%D3j%B5%CA%B1%25%F0L%26%83t%3A%8Dd2%89x%3C%8ED%22%81R%A9%C4%E7%0A%85%E2B%F2%D4E%A38Z%ADVV%5D%AF%D7Yu%A5Ra%92b%B1%C8%13%A8%D5ji%13%DC%9A%D9h4P.%97a6%9Ba2%99%600%18%A0%D7%EBYq%A1P%E0%9D(%95J%E9%3B%B8%EE%A4%FC%87B!%F4z%BD%3B%00%8DF%03%97%CB%05%9DN'x%17%9E%B2H(%87*%95%0Ar%B9%FCr%E9n%7B%BEM%F0%7B%FF%A6%8F%94I%3D%FF%FB%16%9D%00%89%06%23%97%2Bi%AE%7F%00%00%00%00IEND%AEB%60%82";
var retrievingButtonTransparentImg = "data:image/png;base64," +
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var commentedButtonImg = "data:image/png,%89PNG%0D%0A%1A%0A%00%00%00%0DIHDR%00%00%00%18%00%00%00%18%08%02%00%00%00o%15%AA%AF%00%00%00%04gAMA%00%00%B1%8F%0B%FCa%05%00%00%00%FFIDAT8Oc%FC%FF%FF%3F%03%05%E0%F7%FF%8F%0C%7F%18XY%D9%18%80%06Q%02%FE%FD%FF%F6%1F%84%FESj%10%DC%11%23%C8%A0%CF%DF~N%DAx1%BAsgD%FB%0EL%D4%BA%FC%F4%F3w_%B0F%0Ez%18%E5L%3D%F0%DFm%19.%04%94%CD%9F~%E8%F7%9F%BF%98f%A1%18%F4%FD%E7%EF%C8%8E%1D%FF%D3%B7%E11%ABz%C1%F1%DBO%DF%130%E8%F5%87o%F8%5D%04%B4%A0s%D5%D9%B3%B7_%D1%CB%20%A8%D7p%87%11%D0E%B5%8BN%DC%7CB%C8k%40%07w%AF%3E%0B%F4%DD%0D%86%02%CC%60%02%0AB%02%FB%E7%AF%3F%04%BC%06%94%86D%3F0%C8!q%3Fw%C7U%B8%89%40v%C9%EC%23%C4F%3F%9AUy%D3%0F%02%1D%024%22%B6k%D7%DA%23w%F0do%7Cy%0D%E8%91%99%DB%AE%C4%F7%EC%DEr%F2%3E%C1%12%02%A7A%2F%DE%7F%05%1A%B4%F7%FCc%82F%40%14%8C%A0%DCOd%88%10NG%C3%C8%20%00%86%F1%02%3D%CA%BE%AA%7D%00%00%00%00IEND%AEB%60%82";
var commentedButtonTransparentImg = "data:image/png;base64," +
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var notCommentedButtonImg = "data:image/png,%89PNG%0D%0A%1A%0A%00%00%00%0DIHDR%00%00%00%18%00%00%00%18%08%06%00%00%00%E0w%3D%F8%00%00%00%01sRGB%00%AE%CE%1C%E9%00%00%00%04gAMA%00%00%B1%8F%0B%FCa%05%00%00%00%20cHRM%00%00z%26%00%00%80%84%00%00%FA%00%00%00%80%E8%00%00u0%00%00%EA%60%00%00%3A%98%00%00%17p%9C%BAQ%3C%00%00%00%18tEXtSoftware%00Paint.NET%20v3.08er%9C%E1%00%00%01FIDATHK%EDT%3D%8B%83%40%14%CC%FDq%0DZ%C746bc%91T6%01%0B%1B%C1%CA%CA%3F%60%E9G%8C%9A%C4%0F%84%80%22a%EE%9E%A0%C8%9D%9E%26%10%8E%83%0C%2C%AC%B0%3B%F3f%DEs%3F%F0%85%D5%2BA%02%AF%C4%EA%95%E4m%3Ao%81%B9%04%FE.%A2%DB%ED%06UU%B1%5E%AF%C10%CC%E4R%14%05%D7%EBu%D2%C8%A4%83%FD~%0F%C30%D04%CD%AF)X%96%85%EDv%3BynT%A0%AA*%B0%2C%8B%FB%FD%0ErR%14%05%F2%3CG%9A%A6%B8%5C.H%92%04Q%14%B5%8B%20I%12%82%20%18-dT%80%C86%9BM%7B%81%F6Y%96%FD%20%0F%C3%B0'%DD%EDvp%1C%E79%01%22%A7%8C%A9%F28%8Eq%3A%9D%D0%91%7B%9E%D7%92%3E%2C0%8C%88%E29%9F%CF%3D%F9%F1x%84%EF%FBp%5D%17%9D%80%2C%CB%FD%FE%BB%8D%D9%26S%1F%86%207DN%C2%84%AE%C9u%5D%2F%8F%88NvcJ%CD%EE%C6T%D3%B4%9E%A4%2CK%D0%B7(%8A%CF%8D%E9X94%8E%E4%80%889%8E%83i%9As%3F%F2%F2%C7N%D7u%1C%0E%07%F0%3C%DF%C6%B2%14%8B%9E%0A%9A%7FA%10%60%DB%F6R%DE%FE%DC%22%81%87Y%07%17%DE%02%B3%E9%FD%FF%88%3E%01Y%AF%5CU%DDg(%08%00%00%00%00IEND%AEB%60%82";
var notCommentedButtonTransparentImg = "data:image/png;base64," +
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var errorCommentedButtonImg = 'data:image/png;base64,' +
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var errorCommentedButtonTransparentImg = "data:image/png;base64," +
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if (typeof(GM_log) == "undefined") {
    var GM_log = function(message) {
        console.info('FCO: ' + message);
};// semicolon
}

// TWEAK TEST : document.getElementsByTagName('script')
// OR:
// document.getElementsByClassName("mystyle")[0].className;
function addButtonToMenu(photo_id)
{
    var stats = document.getElementsByTagName('stats_ul');
    if(stats) {
    var libut = document.createElement('li');
    libut.setAttribute('style','border-color:transparent;');
    libut.setAttribute('class', 'stat-item');
    var first = stats.getElementsByTagName('li')[0];
    stats.insertBefore(libut, first);
    var divbut = libut.appendChild(document.createElement('a'));
    divbut.setAttribute('style','height:24px;');
    var commentedButton = divbut.appendChild(document.createElement('img'));
    commentedButton.setAttribute('style','position:relative; top:0px;');
    commentedButton.id = 'FCO-image-' + photo_id;
    commentedButton.alt = 'retrieving';
    commentedButton.title = commentedButton.alt;
    commentedButton.src = retrievingButtonImg;
    }
    return libut;
}

function addButtonToImageCard(imgLinks,photo_id)
{
    if(imgLinks) {
    var libut = document.createElement('li');
    libut.setAttribute('style','border-color:transparent;');
    libut.setAttribute('class', 'counter0');
    var first = imgLinks.getElementsByTagName('li')[0];
    imgLinks.insertBefore(libut, first);
    var divbut = libut.appendChild(document.createElement('a'));
    divbut.setAttribute('style','height:24px;');
    var commentedButton = divbut.appendChild(document.createElement('img'));
    commentedButton.setAttribute('style','position:relative; top:0px;');
    commentedButton.id = 'FCO-image-' + photo_id;
    commentedButton.alt = 'retrieving';
    commentedButton.title = commentedButton.alt;
    commentedButton.src = retrievingButtonImg;
    }
    return libut;
}

function addButtonToThumbnail(thumbnail, photo_id, before) {
    if ( document.getElementById('FCO-image-' + photo_id) ) { // there already is one (set page, apps page, ..)
        return document.getElementById('FCO-image-' + photo_id);
    }
    if (!photo_id) {
    photo_id = document.evaluate('./a/img', thumbnail, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null).
                singleNodeValue.src.match(/.*flickr.com\/\d+\/(\d+)_.*/)[1];
    }
    var libut = document.createElement('div');
        libut.setAttribute('style','display: inline-block; max-height: 16px; position: static;');
    libut.setAttribute('id', 'FCO-photo-' + photo_id);
    if (before) {
        thumbnail.insertBefore(libut, before);
    } else {
        thumbnail.appendChild(libut);
    }
    var divbut = libut.appendChild(document.createElement('a'));
    divbut.setAttribute('style', 'height:24px');
    divbut.href = "#";
    var commentedButton = divbut.appendChild(document.createElement('img'));
    commentedButton.setAttribute('style', 'height:24px;');
    commentedButton.id = 'FCO-image-' + photo_id;
    commentedButton.title = 'retrieving';
    commentedButton.src = retrievingButtonImg;

     var photoUrl = document.evaluate('.//a', thumbnail, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null).
            singleNodeValue.href;
    getPhotoComments(photo_id, photoUrl);

    return libut;
}

function addButtonToPoolItem(thumbnail) {
    var photo_id = thumbnail.getAttribute('data-photo-id');
    var hover = document.evaluate('.//div[contains(@class,"hover-target")]', thumbnail, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null).singleNodeValue;
    var meta = document.evaluate('.//div[contains(@class,"meta")]', thumbnail, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null).singleNodeValue;
    meta.setAttribute('style', 'display: inline-block; vertical-align: top;');
    addButtonToThumbnail(hover, photo_id, meta);
}

GM_addStyle(".FCO-gradient { " +
    "background: -webkit-gradient(radial, center center, 0, center center, 24, from(#bbbbbb), to(#ffffff)); " +
    "background: -webkit-radial-gradient(#bbbbbb, #ffffff); " +
    "background: -moz-radial-gradient(circle, #bbbbbb, #ffffff); " +
    "}; ");

function addButtonToJustifiedPoolItem(thumbnail, photo_id) { // photo_id passed for stream items
    if (!photo_id) {
        photo_id = thumbnail.getAttribute('data-photo-id');
    }
    if ( document.getElementById('FCO-image-' + photo_id) ) { // there already is one (set page, apps page, ..)
        return;
    }
    var libut = thumbnail.appendChild(document.createElement('div'));
        libut.setAttribute('style','display: inline-block; height: 24px; position: absolute; left: 10px; top: 10px;');
    libut.setAttribute('id', 'FCO-photo-' + photo_id);
    var divbut = libut.appendChild(document.createElement('a'));
        divbut.setAttribute('style', 'height:24px;');
        divbut.href = "#";
    var commentedButton = divbut.appendChild(document.createElement('img'));
        commentedButton.setAttribute('style', 'height:24px;');
    commentedButton.setAttribute('class', 'FCO-gradient');
        commentedButton.id = 'FCO-image-' + photo_id;
        commentedButton.title = 'retrieving';
        commentedButton.src = retrievingButtonTransparentImg;

        var photoUrl = document.evaluate('.//span[contains(@class,"photo_container")]/a', thumbnail, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null).singleNodeValue.href;
    getPhotoComments(photo_id, photoUrl);

    return libut;
}

function setCommented(commented, photo_id, href, comment_count)
{
    var commentedButton = document.getElementById('FCO-image-' + photo_id);
    if (!commentedButton) {
    return;
    }
    switch (commented) {
        case 'yes':
            commentedButton.src = commentedButton.className.match('FCO-gradient') ? commentedButtonTransparentImg : commentedButtonImg;
            commentedButton.alt = "Yay! You've commented on this photo!";// semicolon
        if (SHOW_COMMENT_COUNT) {
            var countId = 'FCO-image-count-' + photo_id;
            if (!document.getElementById(countId)) {
                        var count = document.createElement('span');
                count.id = countId;
                        count.setAttribute('style', "display:inline;z-index: 2; position: relative; left: -15px; top: -12px; font-size: 10px; color: white;padding: 0px;border-right:0;");
                        count.innerHTML = comment_count;
                        count.title = commentedButton.alt;
                commentedButton.parentNode.appendChild(count);
            }
                }
            break;
        case 'no':
            commentedButton.src = commentedButton.className.match('FCO-gradient') ? notCommentedButtonTransparentImg : notCommentedButtonImg;
            commentedButton.alt = "Go ahead! Make my day! (by commenting)";
        break;
        case 'error':
                commentedButton.src = commentedButton.className.match('FCO-gradient') ? errorCommentedButtonTransparentImg : errorCommentedButtonImg;
                commentedButton.alt = "Error: " + comment_count;
            break;
        default:
            commentedButton.src = commentedButton.className.match('FCO-gradient') ? errorCommentedButtonTransparentImg : errorCommentedButtonImg;
            commentedButton.alt = "Error: " + commented;
            break;
    }
    commentedButton.title = commentedButton.alt;
    if (href == "#reply-box") { // when clicked, go to the reply-box, and set focus
        commentedButton.style.cursor = 'pointer';
        commentedButton.addEventListener('click', function (e) {
            var textarea = document.getElementById('message');
            textarea.focus();
            textarea.setSelectionRange(0,0);
        }, false);
    } else {
        commentedButton.parentNode.href = href;
    }
}

// DECEMBRE CORRECTION 2014 : https://www.flickr.com/groups/flickrhacks/discuss/72157645811287588/#comment72157648370481010
function getUsername() {
//  var buddyIcon = document.evaluate('.//a[contains(@class,"account")]/img[contains(@class,"gn-buddyicon")]', document, null,
//          XPathResult.FIRST_ORDERED_NODE_TYPE, null).singleNodeValue;

            var buddyIcon = document.evaluate('.//span[contains(@class,"account")]/img[contains(@class,"gn-buddyicon")]', document, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null).singleNodeValue;

    if (!buddyIcon) return null;
    return buddyIcon.src.match(/flickr.com\/\d+\/buddyicons\/(\d+@\w\d{2})/)[1];
}

// thanks to Vispillo (http://www.flickr.com/photos/31747528@N05/):
var getJSVariable = function(regex) {
                // Thanks to Vispillo for this compact code
                var scripts = document.getElementsByTagName('script');
        for (var i = 0; i < scripts.length; ++i) {
                        var html = scripts[i].innerHTML;
            try {
                return html.match(regex)[1];
            } catch(e) {
            }
                }
                return undefined;
};// semicolon
var api_key = getJSVariable(/[\"\']api_key[\"\'][ :]+[\"\']([^\"\']+)[\"\']/);
var auth_hash = getJSVariable(/[\"\']auth_hash[\"\'][ :]+[\"\']([^\"\']+)[\"\']/);

function getPhotoComments(photo_id, commentHref)
{

// HTTPS
    GM_xmlhttpRequest({
            method:"GET",
            // use www.flickr.com to call the api (same servers :) ), to make it work in Chrome
            url: "https://www.flickr.com/services/rest/?method=flickr.photos.comments.getList&api_key="+api_key+"&photo_id=" + photo_id + "&format=json&nojsoncallback=1&auth_hash="+auth_hash,
            onload:function(details) {
                try{
                    try {
                        var data = JSON.parse(details.responseText);
                    } catch (e) { // older versions of FF don't have JSON
            try {
                            data = eval( '(' + details.responseText + ')');
            } catch (f) {
                GM_log("error parsing JSON data: " + e);
                GM_log("received from server for photo_id(" + photo_id + "): '" + details.responseText + "'");
                setCommented('error', photo_id, commentHref, e);
                return;
            }
                    }
                    if (data.stat == 'ok') {
                        var comments = data.comments.comment;
                        var commented = false;
            var comment_count = 0;
            var permalink = undefined;
                        if (comments) {
                            comments.forEach(function(comment, idx) {
                                if (commented && !SHOW_COMMENT_COUNT) return;
                                if (comment.authorname == user_name || comment.author == user_name) {
                                    commented = true;
                    ++comment_count;
                                    if (permalink == undefined) permalink = comment.permalink;
                                }
                            });
                        if (commented) {
                        setCommented('yes', photo_id, permalink.replace('#comment', 'comment'), comment_count);
                } else {
                        setCommented('no', photo_id, commentHref, comment_count);
                    }
                        } else {
                            setCommented('no', photo_id, commentHref, comment_count);
                        }
                    } else {
                        setCommented(data.code + " - " + data.message, photo_id, commentHref, comment_count);
                    }
                } catch(e) {
                    GM_log("error parsing API result: " + e);
            GM_log("response received: " + details.responseText);
            setCommented('error', photo_id, commentHref, e + ' - ' + details.responseText);
                }
            },
            onerror: function(details) {
                GM_log("error: " + details.statusText);
        setCommented('error', photo_id, commentHref, details.statusText);
            }
    });

}

var user_name = getUsername();
if(!user_name) {
    GM_log("no user name found");
    return;
} else {
    GM_log("running for user " + user_name);
}


// TEST not Working : TWEAK DECEMBRE : .new-comment-text
// TEST 2018 -
try {
if (document.location.href.match(/.*flickr.com\/photos\/[^\/]+\/\d+/)) { // on photo page
    // add a 'reply' name anchor to jump to on button click
    var anchorInCommentForm = document.evaluate('//div[contains(@class,"add-comment-form")]//a', document, null,
//      var anchorInCommentForm = document.evaluate('//div[contains(@class,"new-comment-text")]//a', document, null,
        XPathResult.FIRST_ORDERED_NODE_TYPE, null).singleNodeValue;
    if (anchorInCommentForm) { // no comment form: no permission to comment
        anchorInCommentForm.setAttribute('name', 'reply-box');
    }
    var photo_id = document.location.href.match(/.*flickr.com\/photos\/[^\/]+\/(\d+)/)[1];

    addButtonToMenu(photo_id);
    getPhotoComments(photo_id, "#reply-box");

// TEST todo 20117 decembre    https://www.flickr.com/groups/58146428@N00/pool/54528939@N06/ // TEST GROUP JUSTIFIED == .photo-list-photo-view == TEST == or contains(@class,"photo-list-photo-view")
// TEST todo 20117 decembre     https://www.flickr.com/photos/j_chambon/sets/72157632865244719 // SET (ALBUM) === .fluid a.overlay == TEST == or contains(@class,"fluid a.overlay")

    // [2025.01] DECEMBRE FIX POOL SM - NEW URL - https://www.flickr.com/groups_pool.gne?path=portrait_face&nsid=&page=&jump_to=&thumb=1
} else if (document.location.href.match(/.*flickr.com\/groups\/[^\/]+\/?$/) ||// group start pages
       document.location.href.match(/https:\/\/www\.flickr\.com\/groups_pool\.gne\?path=[^&]+&nsid=&page=&jump_to=&thumb=1/) || // match any path value for NEW pool sm url
       document.location.href.match(/.*flickr.com\/groups\/[^\/]+\/pool/) ||// group pools
       document.location.href.match(/.*flickr.com\/photos\/[^\/]+\/favorites/) ||// favorites pages
       document.location.href.match(/.*flickr.com\/photos\/[^\/]+\/archives/) ||// archive pages
       document.location.href.match(/.*flickr.com\/photos\/friends/)) {// friends

    var poolPhotos = document.evaluate('//div[contains(@class,"pool-photo") or contains(@class,"fave") or contains(@class,"photo-display-item")]',
        document, null, XPathResult.UNORDERED_NODE_SNAPSHOT_TYPE, null);
    if (poolPhotos.snapshotLength <= 0) {
        GM_log("no photos found, aborting");
    return;
    }
    var poolItemDecorator = addButtonToJustifiedPoolItem; // assume justified view
    var squarePhotos = document.evaluate('count(//span[contains(@class,"pc_s")])', document, null,
            XPathResult.ANY_TYPE, null);
    if (squarePhotos.numberValue == poolPhotos.snapshotLength) {
        // square thumbnails view
    poolItemDecorator = null; // not on squares!
    // except on set pages:
    //if (document.location.href.match(/.*flickr.com\/photos\/[^\/]+\/sets/)) {
        poolPhotos = document.evaluate('//span[contains(@class,"photo_container")]', document, null,
                XPathResult.UNORDERED_NODE_SNAPSHOT_TYPE, null);
        poolItemDecorator = addButtonToThumbnail;
    //}
    } else {
        var smallPhotos = document.evaluate('count(//span[contains(@class,"pc_t")])', document, null,
        XPathResult.ANY_TYPE, null);
    if (smallPhotos.numberValue == poolPhotos.snapshotLength) {
        // small thumbnails view
        poolItemDecorator = addButtonToPoolItem;
    } else {
        var mediumPhotos = document.evaluate('count(//span[contains(@class,"pc_m")])', document, null,
            XPathResult.ANY_TYPE, null);
        if (mediumPhotos.numberValue == poolPhotos.snapshotLength) {
            // medium view
            poolItemDecorator = addButtonToPoolItem;
        } else {
            var largePhotos = document.evaluate('count(//span[contains(@class,"pc_z")])', document, null,
                XPathResult.ANY_TYPE, null);
            if (largePhotos.numberValue == poolPhotos.snapshotLength) {
                // large view
                poolItemDecorator = addButtonToPoolItem;
            } else {
                //alert("justified view (" + poolPhotos.snapshotLength + ")");
            }
        }
    }
    }

    if (!poolItemDecorator) {
    return;
    }

    for (var i = 0, len = poolPhotos.snapshotLength; i < len; ++i) {
        var thumbnail = poolPhotos.snapshotItem(i);
    poolItemDecorator(thumbnail);
    }
    document.getElementById('main').addEventListener('DOMNodeInserted', function(event) {
        setTimeout(function() { // workaround: addEventListener callback gets called in unsafeWindow!
            try {
                    var target = event.target;
                    if (target.nodeName == 'DIV' && (target.className.match('pool-photo') || target.className.match('fave') || target.className.match('photo-display-item'))) {
                poolItemDecorator(target);
                    }
            } catch (e) {
                    GM_log("error on insert: " + e);
            }
    }, 0);
    }, true);
} else if (document.location.href.match(/.*flickr.com\/photosof\/contacts/) ||// contacts
           document.location.href.match(/.*flickr.com\/activity/)) {// recent activity
    var poolThumbnails = document.evaluate('//span[contains(@class,"photo_container")]', document, null,
        XPathResult.UNORDERED_NODE_SNAPSHOT_TYPE, null);
    for (var i = 0, len = poolThumbnails.snapshotLength; i < len; ++i) {
        var thumbnail = poolThumbnails.snapshotItem(i);
        try {
            var photo_id = document.evaluate('./a/img', thumbnail, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null).
                singleNodeValue.src.match(/.*flickr.com\/\d+\/(\d+)_.*/)[1];
        } catch (e) {
            continue;
        }
        var commentedOnButton = addButtonToThumbnail(thumbnail, photo_id);
        try {
            // move the balloon
            thumbnail.parentNode.insertBefore(commentedOnButton, thumbnail.nextSibling.nextSibling.nextSibling); // span - br
        } catch (e) {
            try {
                thumbnail.parentNode.insertBefore(commentedOnButton, thumbnail.nextSibling);
            } catch (e) {
                GM_log("error inserting: " + e);
            }
            GM_log("error moving: " + e);
            // ignore: let it be
        }
    }
} else if (document.location.href.match(/.*flickr.com\/photos\/[^\/]+(\/page\d+|\/with\/\d+.*)?\/?$/) || // stream pages
       document.location.href.match(/.*flickr.com\/photos\/[^\/]+\/sets/)) {// set pages
    document.getElementById('main').addEventListener('DOMNodeInsertedIntoDocument', function(evt) {
        setTimeout(function() { // workaround: addEventListener callback gets called in unsafeWindow!
            try {
                    var target = evt.target;
                    if (target.nodeName == 'SPAN' && target.className.match("attribution")) {
                //unsafeWindow.console.log("add attribution");
                var thumbnailDiv = document.evaluate('.//ancestor::div[contains(@class,"photo-display-item")]', target, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null).singleNodeValue;
                var photo_id = thumbnailDiv.getAttribute('data-photo-id');
                var thumbnail = document.evaluate('.//div[contains(@class,"thumb")]', thumbnailDiv, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null).singleNodeValue;
                addButtonToJustifiedPoolItem(thumbnail, photo_id);
                    } else if (target.nodeName == 'DIV' && target.className.match("cover-photo-position")) { // page has been reloaded: re-run
                //unsafeWindow.console.log("add buttons");
                    var streamItems = document.evaluate('//div[contains(@class,"photo-display-item")]', document, null,
                    XPathResult.UNORDERED_NODE_SNAPSHOT_TYPE, null);
                    for (var i = 0, len = streamItems.snapshotLength; i < len; ++i) {
                    var streamItem = streamItems.snapshotItem(i);
                    var photo_id = streamItem.getAttribute('data-photo-id');
                    var thumbnail = document.evaluate('.//div[contains(@class,"thumb")]', streamItem, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null).singleNodeValue;
                    addButtonToJustifiedPoolItem(thumbnail, photo_id);
                    }
            } else {
                //unsafeWindow.console.log("adding " + target.nodeName + "(class:" + target.className + ")");
            }
            } catch (e) {
                    GM_log("error on insert: " + e);
            }
    }, 0);
    }, true);
        var streamItems = document.evaluate('//div[contains(@class,"photo-display-item")]', document, null,
        XPathResult.UNORDERED_NODE_SNAPSHOT_TYPE, null);
        for (var i = 0, len = streamItems.snapshotLength; i < len; ++i) {
        var streamItem = streamItems.snapshotItem(i);
        var photo_id = streamItem.getAttribute('data-photo-id');
        var thumbnail = document.evaluate('.//div[contains(@class,"thumb")]', streamItem, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null).singleNodeValue;
        addButtonToJustifiedPoolItem(thumbnail, photo_id);
        }
} else if (document.location.href.match(/.*flickr.com\/?$/)) {// flickr home page
    var imageItems = document.evaluate('//div[contains(@class,"imgWrapper")]', document, null,
        XPathResult.UNORDERED_NODE_SNAPSHOT_TYPE, null);
    for (var i = 0, len = imageItems.snapshotLength; i < len; ++i) {
    var imageItem = imageItems.snapshotItem(i);
    var photo_id = imageItem.getAttribute('data-photo-id');
    var imgLinks = document.evaluate('.//ul[contains(@class,"imgLinks")]', imageItem, null,
        XPathResult.FIRST_ORDERED_NODE_TYPE, null).singleNodeValue;
    addButtonToImageCard(imgLinks, photo_id);
    var photoUrl = document.evaluate('.//a', imageItem, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null).
            singleNodeValue.href;
    getPhotoComments(photo_id, photoUrl);
    }
}

} catch (e) { console.error('exception:', e); }

})();