<script type="text/javascript" charset="utf-8" src="http://bit.ly/javascript-api.js?version=latest&amp;login=bitlyapidemo&amp;apiKey=R_0da49e0a9118ff35f52f629d2d71bf07"></script>
<script type="text/javascript" charset="utf-8">
    BitlyClient.addPageLoadEvent(function(){
        BitlyCB.myShortenCallback = function(data) {
            // this is how to get a result of shortening a single url
            var result;
            for (var r in data.results) {
                result = data.results[r];
                result['longUrl'] = r;
                break;
            }
            document.getElementById("shorturl").innerHTML = "Direcci�n para compartir: &lt;input onClick='this.select()' type='text' value='" + result['shortUrl'] + "' name='bitlyurl'/&gt;";
        }
        BitlyClient.shorten(document.location, 'BitlyCB.myShortenCallback');
    });
</script>