steam-store-game-page.user.js

// ==UserScript==
// @name Steam Web Tools Steamstore Gamepage MOD
// @include https://store.steampowered.com/app/*
// @include http://store.steampowered.com/app/*
// @include https://store.steampowered.com/sub/*
// @include http://store.steampowered.com/sub/*
// ==/UserScript==

window.addEventListener("DOMContentLoaded",
    function() {

        var els = document.querySelectorAll('input[name="subid"]');

        var subid, el;
        for(var i=0; i < els.length; i++){
            el = els[i];
            subid = el.value;
            el.parentElement.parentElement.insertAdjacentHTML('beforeEnd', '<div>Subscription id = <a href="http://cdr.thebronasium.com/sub/'+subid+'">'+subid+'</a></div>');
        }

        var res = String(window.location.href).match(/\/(sub|app)\/(\d+)/i);
        var gamenameEl = document.querySelector('.game_title_area .game_name .blockbg');
        if (!gamenameEl){
            gamenameEl = document.querySelector('.apphub_AppName');
        }
        var gamename = encodeURIComponent(gamenameEl.textContent.trim());
        el = document.querySelector('#main_content > .rightcol');

        links = [
            {href:'http://steamgamesales.com/'+res[1]+'/'+res[2], icon:'http://steamgamesales.com/favicon.ico', text:'Посмотреть на SteamGameSales.com'},
            {href:'http://www.steamprices.com/ru/'+res[1]+'/'+res[2], icon:'http://www.steamprices.com/favicon.png', text:'Посмотреть на SteamPrices.com'},
            {href:'http://steammoney.com/?price=up&s='+gamename, icon:'http://steammoney.com/favicon.ico', text:'Искать на SteamMoney.com'},
        ];

        el.insertAdjacentHTML('afterBegin', createBlock('Steam Web Tools', links));

    }
,false);


// block
function createBlock(title, links){
    var out='<div class="block">\
<div class="block_header"><h4>'+title+'</h4></div>\
<div class="block_content"><div class="block_content_inner">';

    var link;
    for (var i=0; i < links.length; i++) {
        link = links[i];
        out+='<a class="linkbar" href="'+link.href+'" target="_blank"><div class="rightblock">\
<img src="'+link.icon+'" width="16" height="16" border="0" align="top"></div>'+link.text+'</a>'
    }

    out+='</div></div></div>';

    return out;
}