Standard sharing buttons insert script

social.js

////////////////////////////////////////////  
//
//  SHARING BUTTONS SCRIPTS
//  Included with _standard_PostSharingButtons.cshtml
//
////////////////////////////////////////////

window.onload = function () //add after document has fully loaded 
{
    /* ************* tweet it button ******************** */

    (function (d, s, id) {
        var js, fjs = d.getElementsByTagName(s)[0];
        if (!d.getElementById(id)) {
            js = d.createElement(s);
            js.id = id;
            js.src = "https://platform.twitter.com/widgets.js";
            js.async = true;
            fjs.parentNode.insertBefore(js, fjs);
        }
    })(document, "script", "twitter-wjs");


    /* ************ share on linkedin button ******************** */
    (function () {
        var po = document.createElement('script');
        po.type = 'text/javascript';
        po.async = true;
        po.src = 'https://platform.linkedin.com/in.js';
        var s = document.getElementsByTagName('script')[0];
        s.parentNode.insertBefore(po, s);
    })();


    /* ************ facebook like button ******************** */

    (function (d, s, id) {

        //adds needed div 
        var body = d.getElementsByTagName("body")[0];
        var div = d.createElement("div");
        div.id = "fb-root";
        body.appendChild(div);

        //adds actual script tag
        var js,
            fjs = d.getElementsByTagName(s)[0];
        if (d.getElementById(id)) return;
        js = d.createElement(s);
        js.id = id;
        js.async = true;
        js.src = "//connect.facebook.net/en_GB/all.js#xfbml=1&appId=114891398711423";
        fjs.parentNode.insertBefore(js, fjs);
    }(document, 'script', 'facebook-jssdk'));


    /* ************ google+ button ******************** */

    (function () {
        var po = document.createElement('script');
        po.type = 'text/javascript';
        po.async = true;
        po.src = 'https://apis.google.com/js/plusone.js';
        var s = document.getElementsByTagName('script')[0];
        s.parentNode.insertBefore(po, s);
    })();

};