jQuery and lodash bookmarklet

gistfile1.js

javascript:(function() {
    var el = document.createElement('pre'),
        b = document.getElementsByTagName('body')[0],
        otherjQuery = false,
        msg = '',
        libs = [
            function loadjQuery() {
                if (typeof jQuery != 'undefined') {
                    showMsg('This page already using jQuery v' + jQuery.fn.jquery);
                } else {
                    if (typeof $ == 'function') {
                        otherjQuery = true;
                    }
                    getScript('//cdnjs.cloudflare.com/ajax/libs/jquery/2.0.3/jquery.js', function() {
                        if (typeof jQuery == 'undefined') {
                            showMsg('Sorry, but jQuery wasn\'t able to load')
                        } else {
                            showMsg('This page is now jQuerified with v' + jQuery.fn.jquery + otherjQuery ? ' and noConflict(). Use $jq(), not $().' : '');
                        }
                    });
                }
            },
            function loadLodash() {
                if (typeof _ != 'undefined') {
                    showMsg('This page already using lodash v' + _.VERSION);
                }
                getScript('//cdnjs.cloudflare.com/ajax/libs/lodash.js/1.3.1/lodash.min.js', function() {
                    showMsg('This page is now has lodash');
                });
            }
        ];
    el.style.position = 'fixed';
    el.style.top = '0';
    el.style.padding = '5px 10px';
    el.style.zIndex = 9001;
    el.style.fontSize = '12px';
    el.style.color = '#222';
    el.style.backgroundColor = '#f99';

    function getScript(url, success) {
        var script = document.createElement('script');
        script.src = url;
        var head = document.getElementsByTagName('head')[0],
            done = false;
        script.onload = script.onreadystatechange = function() {
            if (!done && (!this.readyState || this.readyState == 'loaded' || this.readyState == 'complete')) {
                done = true;
                success();
                script.onload = script.onreadystatechange = null;
                head.removeChild(script);
            }
        };
        head.appendChild(script);
    }

    function showMsg(msg) {
        if (!document.body.contains(el)) {
            b.appendChild(el);
        }
        el.appendChild(document.createTextNode(msg + '\n'));
        window.setTimeout(function() {
            if (typeof jQuery == 'undefined') {
                b.removeChild(el);
            } else {
                jQuery(el).fadeOut('slow', function() {
                    jQuery(this).remove();
                });
                if (otherjQuery) {
                    $jq = jQuery.noConflict();
                }
            }
        }, 2500);
    }
    libs.forEach(function(init) {
        init();
    });
})();