Use Twitter api with JQuery to update news on a web page

jquery.twitter.js

/*
 jquery twitter. By Luis Parravicini.
 http://ktulu.com.ar/blog/2009/10/03/twitter-updates-with-jquery/
*/
(function($) {
  $.twitter_updates = function(options) {
    var defaults = { 'count': 10 }
    var opts = $.extend(defaults, options)
    var elem = this

    $.getScript("http://twitter.com/javascripts/blogger.js")
    var url = "http://twitter.com/statuses/user_timeline/" +
      opts['username'] + ".json?callback=twitterCallback2&count=" +
      opts['count']
    $.getScript(url)
  }
})(jQuery);