virtualbrest.by horisontal sticky 1 time in session

<div id="lx_sticky_wrapper"></div>
<script>
(function(w){

    function getCookie(name) {
        let matches = document.cookie.match(new RegExp(
            "(?:^|; )" + name.replace(/([\.$?*|{}\(\)\[\]\\\/\+^])/g, '\\$1') + "=([^;]*)"
        ));
        return matches ? decodeURIComponent(matches[1]) : undefined;
    }

    function setCookie(name, value, options = {}) {
        if (options.expires instanceof Date) {
            options.expires = options.expires.toUTCString();
        }
        let updatedCookie = encodeURIComponent(name) + "=" + encodeURIComponent(value);
        for (let optionKey in options) {
            updatedCookie += "; " + optionKey;
            let optionValue = options[optionKey];
            if (optionValue !== true) {
                updatedCookie += "=" + optionValue;
            }
        }
        document.cookie = updatedCookie;
    }

    function showCode(p, c) {
        var div = document.createElement('div');
        div.innerHTML = c;
        p.appendChild(div);
        while (div.firstChild) p.insertBefore(div.firstChild, div);
        p.removeChild(div);
        var scripts = p.getElementsByTagName("script");
        Array.from(scripts).forEach(function(script, index, array) {
            var newScript = document.createElement('script');
            if(typeof script.src !== "undefined" && script.src && script.sr !== "")
            {
                newScript.src = script.src;
                newScript.className = script.className;
                p.appendChild(newScript);
            }
            else
            {
                var data = (script.text || script.textContent || script.innerHTML || "");
                newScript.className = script.className;
                newScript.type = script.type;
                newScript.appendChild(document.createTextNode(data));
                p.appendChild(newScript);
            }
            p.removeChild(script);
        });
    }


    if(!getCookie("lx_sticky_shown"))
    {
        var code = "<scr" + "ipt async type='text/javascript' src='//s.clickiocdn.com/t/common_258.js'><\/scr" + "ipt>" +
            "<scr" + "ipt class='__lxGc__' type='text/javascript'>" +
            "((__lxGc__=window.__lxGc__||{'s':{},'b':0})['s']['_209992']=__lxGc__['s']['_209992']||{'b':{}})['b']['_659149']={'i':__lxGc__.b++};" +
            "<\/scr" + "ipt>";  // code to insert
        var parent = document.querySelector("#lx_sticky_wrapper");
        showCode(parent, code);
        setCookie("lx_sticky_shown", 1, {secure: true, 'expires': 'session'})
    }
})(window);
</script>