Javascript: Google Analytics Snipper + Google Analytics JS Logging

gistfile1.js

       
        var _gaq = _gaq || [['_setAccount', 'UA-xxxxxxx-1'], ['_trackPageview']];

        ; (function ($, n, d, t, w, s, undefined) {

            //Google Analytics Snipper
            var g = d.createElement(t); g.type = 'text/javascript'; g.async = true;
            g.src = ('https:' == d.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
            var b = d.getElementsByTagName(t)[0]; b.parentNode.insertBefore(g, b);

            //Javascript Error Logging on Google Analytics
            var i = ($) ? $.browser : {}, v = n.appVersion, u = n.userAgent;
            if (v.match(/Win/i)) i.os = 'Windows';
            else if (v.match(/X11/i)) i.os = 'UNIX';
            else if (v.match(/Linux/i)) i.os = 'Linux';
            else if (v.match(/Android/i)) i.os = 'Android';
            else if (v.match(/Mac/i)) {
                i.os = 'MacOS';
                if (u.match(/iPhone/i)) i.os = 'iPhone';
                else if (u.match(/iPod/i)) i.os = 'iPod';
            }
            else i.os = 'Unknown OS';
            i.screen = s.width + 'x' + s.height;
            i.window = w.innerWidth + 'x' + w.innerHeight;
            i.appVersion = v;
            window.onerror = function (m, f, l) {
                var a = f + ':' + l + '\n' + m;
                for (var p in i)
                    a += '\n' + p + ': ' + i[p];
                _gaq.push(['_trackEvent', 'error', m, a]);
            };
            
        })(jQuery, navigator, document, 'script', window, screen);