A bookmarklet for finding a short URL for a page

shorturl.js

// javascript:(function(){var l=(document.querySelector('[rev~="canonical"]')||document.querySelector('[rel~="alternate"][rel~="short"]')||document.querySelector('[rel~="shortlink"]')||document.querySelector('[rel~="shorturl"]')||document.querySelector('[rel~="alternate"][rel~="shorter"]'));if(l){prompt("Short URL:",l.getAttribute('href'));}else{window.shortUrlBookmarkletCallback=function(bitly){if(bitly.status_code===200){prompt("Bit.ly URL:",bitly.data.url);}else{alert("Bit.ly error:"+bitly.status_txt);}};var s=document.createElement('script');s.type='text/javascript';s.src=('http://api.bit.ly/v3/shorten'+'?longURL='+encodeURIComponent(window.location.href)+'&domain=j.mp'+'&format=json'+'&callback=shortUrlBookmarkletCallback'+'&login=BITLY_USERNAME'+'&apiKey=BITLY_API_KEY');document.querySelector('head').appendChild(s);}})();
(function() {
    var l = (document.querySelector('[rev~="canonical"]')
             || document.querySelector('[rel~="alternate"][rel~="short"]')
             || document.querySelector('[rel~="shortlink"]')
             || document.querySelector('[rel~="shorturl"]')
             || document.querySelector('[rel~="alternate"][rel~="shorter"]'));
    if (l) {
        prompt("Short URL:", l.getAttribute('href'));
    } else {
        window.shortUrlBookmarkletCallback = function(bitly) {
            if (bitly.status_code === 200) {
                prompt("Bit.ly URL:", bitly.data.url);
            } else {
                alert("Bit.ly error: " + bitly.status_txt);
            }
        };
        var s = document.createElement('script');
        s.type = 'text/javascript';
        s.src = ('http://api.bit.ly/v3/shorten'
            + '?longURL=' + encodeURIComponent(window.location.href)
            + '&domain=j.mp'
            + '&format=json'
            + '&callback=shortUrlBookmarkletCallback'
            + '&login=BITLY_USERNAME'
            + '&apiKey=BITLY_API_KEY');
        document.querySelector('head').appendChild(s);
    }
})();