dry_1.js

//before code to detect browser and change some link

var user_agent = navigator.userAgent;

function userAgentCheck(r) {
    return r.test(user_agent);
}

function changeBrowserExtensionLink() {
    if (userAgentCheck(/OPR/)) {
        replaceBrowserExtLnk('Opera', 'opera', 'https://addons.opera.com/ru/extensions/details/novosti-i-pogoda-krasnoiarska-sibnovostiru/');
    } else if (userAgentCheck(/Firefox/)) {
//        replaceBrowserExtLnk('Firefox', 'firefox', '');
        replaceBrowserExtLnk('Google Chrome', 'chrome', 'https://chrome.google.com/webstore/detail/%D0%BD%D0%BE%D0%B2%D0%BE%D1%81%D1%82%D0%B8-%D0%B8-%D0%BF%D0%BE%D0%B3%D0%BE%D0%B4%D0%B0-%D0%BA%D1%80%D0%B0%D1%81%D0%BD%D0%BE%D1%8F%D1%80/pkpejndjbgkfnkfmiehkpbbholhakjno?hl=ru&utm_source=chrome-ntp-launcher');
    } else if (userAgentCheck(/YaBrowser/)) {
        replaceBrowserExtLnk('Yandex Browser', 'chrome', 'https://chrome.google.com/webstore/detail/%D0%BD%D0%BE%D0%B2%D0%BE%D1%81%D1%82%D0%B8-%D0%B8-%D0%BF%D0%BE%D0%B3%D0%BE%D0%B4%D0%B0-%D0%BA%D1%80%D0%B0%D1%81%D0%BD%D0%BE%D1%8F%D1%80/pkpejndjbgkfnkfmiehkpbbholhakjno?hl=ru&utm_source=chrome-ntp-launcher');
    } else if (userAgentCheck(/Safari/) && userAgentCheck(/Version/)) {
//        replaceBrowserExtLnk('Safari', 'safari', '');
        replaceBrowserExtLnk('Google Chrome', 'chrome', 'https://chrome.google.com/webstore/detail/%D0%BD%D0%BE%D0%B2%D0%BE%D1%81%D1%82%D0%B8-%D0%B8-%D0%BF%D0%BE%D0%B3%D0%BE%D0%B4%D0%B0-%D0%BA%D1%80%D0%B0%D1%81%D0%BD%D0%BE%D1%8F%D1%80/pkpejndjbgkfnkfmiehkpbbholhakjno?hl=ru&utm_source=chrome-ntp-launcher');
    } else if (userAgentCheck(/Chrome/)) {
        replaceBrowserExtLnk('Google Chrome', 'chrome', 'https://chrome.google.com/webstore/detail/%D0%BD%D0%BE%D0%B2%D0%BE%D1%81%D1%82%D0%B8-%D0%B8-%D0%BF%D0%BE%D0%B3%D0%BE%D0%B4%D0%B0-%D0%BA%D1%80%D0%B0%D1%81%D0%BD%D0%BE%D1%8F%D1%80/pkpejndjbgkfnkfmiehkpbbholhakjno?hl=ru&utm_source=chrome-ntp-launcher');
    }
}

function replaceBrowserExtLnk(browser_name, browser_id, link){
    var lnk = $('.link_socicons.browser_ext');
    lnk.attr('title', 'Расширение для Sibnovosti для ' + browser_name);
    lnk.attr('href', link);
    var img = lnk.find('img');
    img.attr('alt', 'Sibnovosti.ru для ' + browser_name);
    img.attr('src', '/images/social_and_browser_icons/' + browser_id + '.png')
}

$(document).ready(function(){
    changeBrowserExtensionLink();
});

//after code - to detect browser and change link with received params

var user_agent = navigator.userAgent;

function userAgentCheck(r) {
    return r.test(user_agent);
}

function getBrowserName()
{
    if (userAgentCheck(/OPR/))
    {
        return 'opera';
    }
    else if (userAgentCheck(/Firefox/))
    {
        return 'chrome';
    }
    else if (userAgentCheck(/YaBrowser/))
    {
        return 'yandex';
    }
    else if (userAgentCheck(/Safari/) && userAgentCheck(/Version/))
    {
        return 'chrome';
    }
    else if (userAgentCheck(/Chrome/))
    {
        return 'chrome';
    }
}

function link_browser_replacer(params)
{
    var browsers = {opera: {browser_name: 'Opera', browser_id: 'opera', link: 'https://addons.opera.com/ru/extensions/details/novosti-i-pogoda-krasnoiarska-sibnovostiru/'},
                    chrome: {browser_name: 'Google Chrome', browser_id: 'chrome', link: 'https://chrome.google.com/webstore/detail/%D0%BD%D0%BE%D0%B2%D0%BE%D1%81%D1%82%D0%B8-%D0%B8-%D0%BF%D0%BE%D0%B3%D0%BE%D0%B4%D0%B0-%D0%BA%D1%80%D0%B0%D1%81%D0%BD%D0%BE%D1%8F%D1%80/pkpejndjbgkfnkfmiehkpbbholhakjno?hl=ru&utm_source=chrome-ntp-launcher'},
                    yandex: {browser_name: 'Yandex Browser', browser_id: 'chrome', link: 'https://chrome.google.com/webstore/detail/%D0%BD%D0%BE%D0%B2%D0%BE%D1%81%D1%82%D0%B8-%D0%B8-%D0%BF%D0%BE%D0%B3%D0%BE%D0%B4%D0%B0-%D0%BA%D1%80%D0%B0%D1%81%D0%BD%D0%BE%D1%8F%D1%80/pkpejndjbgkfnkfmiehkpbbholhakjno?hl=ru&utm_source=chrome-ntp-launcher'}}

    var browser_hash = browsers[getBrowserName()];
    var browser_name = browser_hash['browser_name'];

    var lnk = $(params['selector']);
    lnk.attr('title', params['title'] + browser_name);
    lnk.attr('href', browser_hash['link'] );

    var img = lnk.find('img');
    img.attr('alt', 'Sibnovosti.ru для ' + browser_name);
    img.attr('src', '/images/social_and_browser_icons/' + browser_hash['browser_id'] + '.png')
}
//using of new code

var main_page_params = { selector: '.link_socicons.browser_ext', title: 'Расширение для Sibnovosti для '};
link_browser_replacer(main_page_params);