ga

    var _id = YOUR_APP_ID;
    (function(){
        var hs = document.createElement('script');
        hs.type = 'text/javascript';
        hs.async = true;
        hs.src = ('https:'===document.location.protocol?'https:':'http:') + '//localhost:5000/ga.js';
        var s = document.getElementsByTagName('script')[0];
        s.parentNode.insertBefore(hs, s);
    })();