// ==UserScript==
// @name        Remove fake links
// @description Remove tracking redirects like http://www.google.com/url?... and http://clck.yandex.ru/redir/...
// @author      Infocatcher
// @version     0.1.9 - 2012-10-16
// @run-at      document-start
// @namespace   dev/null
// @include     http://www.google.*/search?*
// @include     https://www.google.*/search?*
// @include     http://www.google.*/webhp?*
// @include     https://www.google.*/webhp?*
// @include     http://www.google.*/#*q=*
// @include     https://www.google.*/#*q=*
// @include     http://www.google.*/imgres?*
// @include     https://www.google.*/imgres?*
// @include     http://groups.google.com/*
// @include     https://groups.google.com/*
// @include     http://yandex.*/yandsearch?*
// @include     https://yandex.*/yandsearch?*
// @include     http://market.yandex.ru/model.xml?*
// @include     https://market.yandex.ru/model.xml?*
// @grant       none
// ==/UserScript==

window.addEventListener("mousedown", function(e) {
    var exclude;
    // Uncomment following to leave "Warning - visiting this web site may harm your computer!"
    //exclude = /^https?:\/\/(?:www\.)google\.[\w.]+\/interstitial\?url=http\S+$/;
    for(var a = e.target; a && a.localName; a = a.parentNode) {
        if(a.localName.toLowerCase() == "a" && a.href) {
            if(a.hasAttribute("onmousedown")) {
                a.setAttribute("__deleted__onmousedown", a.getAttribute("onmousedown"));
                a.removeAttribute("onmousedown");
            }
            if(a.hasAttribute("onclick")) {
                var onclick = a.getAttribute("onclick");
                if(/(^|\W)location\.replace\(/.test(onclick)) {
                    a.setAttribute("__deleted__onclick", onclick);
                    a.removeAttribute("onclick");
                }
            }
            if(exclude && exclude.test(a.href))
                break;
            else if(/^https?:\/\/(?:\w+\.)?google\.[\w.]+\/.*=(https?:\/\/[^&?]*)/.test(a.href)) {
                var h = RegExp.$1;
                if(!/^https?:\/\/(?:\w+\.)?google\.[\w.]+\/(search|imgres)\?/.test(a.href))
                    a.href = decodeURIComponent(h);
            }
            else if(/^https?:\/\/clck\.yandex\.\w+\/redir\/.*?\*(https?:\/\/.*)$/.test(a.href))
                a.href = RegExp.$1;
            break;
        }
    }
}, true);