Load jivosite after custom event (for google pagespeed insights for ex.)

JivoSiteLoader.js

<!-- BEGIN JIVOSITE CODE {literal} -->
<script type='text/javascript'>
(function(){
    var widget_id = '#YOUR_API_KEY#';
    document.jivositeloaded = 0;
    var d = document;
    var w = window;

    function load() {
        // Insert script tag before another first script
        var s = d.createElement('script');
        s.type = 'text/javascript';
        s.async = true; s.src = '//code.jivosite.com/script/widget/'+widget_id;
        var ss = document.getElementsByTagName('script')[0];
        ss.parentNode.insertBefore(s, ss);
    }

    function zy() {
        // delete event listeners
        if(w.detachEvent){ // IE8
            w.detachEvent('onscroll', zy);
            w.detachEvent('onmousemove', zy);
            w.detachEvent('ontouchmove', zy);
            w.detachEvent('onresize', zy);
        }
        else {
            w.removeEventListener("scroll", zy, false);
            w.removeEventListener("mousemove", zy, false);
            w.removeEventListener("touchmove", zy, false);
            w.removeEventListener("resize", zy, false);
        }

        // Load or set load event
        if(d.readyState=='complete') {
            load();
        }
        else {
            if(w.attachEvent) {
                w.attachEvent('onload', load);
            }
            else {
                w.addEventListener('load', load, false);
            }
        }

        // Set cookie
        var CookieliveDate = new Date();
        CookieliveDate.setTime(CookieliveDate.getTime() + 60*60*24*1000); // +24 hours
        d.cookie = "JivoSiteLoaded=1;path=/;expires=" + CookieliveDate.toString();
    }

    if (d.cookie.search ( 'JivoSiteLoaded' ) < 0) {
        if(w.attachEvent) { // IE8
            w.attachEvent('onscroll', zy);
            w.attachEvent('onmousemove', zy);
            w.attachEvent('ontouchmove', zy);
            w.attachEvent('onresize', zy);
        }else {
            w.addEventListener("scroll", zy, {capture: false, passive: true});
            w.addEventListener("mousemove", zy, {capture: false, passive: true});
            w.addEventListener("touchmove", zy, {capture: false, passive: true});
            w.addEventListener("resize", zy, {capture: false, passive: true});
        }
    }
    // has cookie (try load)
    else {
        zy();
    }
})();</script>
<!-- {/literal} END JIVOSITE CODE -->