$(document).ready(function (){
	var login  = 'missjp'; // ← bitly に登録したユーザ名
    var apiKey = 'R_623dbe1367c442bafa39fb0648cfefdd'; // ← bitly API Key
   bitly = 'http://api.bit.ly/shorten' 
      + '?version=2.0.1&format=json&callback=changehref'
      + '&login=' + login
      + '&apiKey=' + apiKey + '&longUrl=';
  var script = document.createElement('script');
  script.type = 'text/javascript';
  script.src = bitly + encodeURIComponent(location.href) ;
  document.body.appendChild(script);
});

  function changehref(bitlyResponse) {
    var url = 'http://twitter.com/home/?status=' 
        + encodeURIComponent(
             title + ' ' 
               + bitlyResponse.results[location.href]['shortUrl']
          );
			$('a.tweet_anchor').attr('href', url );
            $('a.tweet_anchor').click();
}