Tweet button doesn't work

twitter-csshelp.css

.custom-tweet-button a {
    display: block;
    padding: 2px 5px 2px 60px;
    color:#2A7090;
    background: url("http://platform0.twitter.com/widgets/images/tweet.png") no-repeat scroll 0 0 transparent;
}
.twitterDiv {
    float:left;
    border:none;
    font-weight:bold;	
}  

twitterapi.js

//you'll need jQuery ;) 
  $('.twitterDiv').each(function(){
    effTwitter($(this));
  });
	
  function effTwitter($obj){		
    var count = 0;
    $.ajax({
      url: 'http://urls.api.twitter.com/1/urls/count.json?twitterCacheSux=1&url=' + encodeURIComponent($obj.attr("rel")),
      dataType: "jsonp",
      success: function(response){
        console.log(response);
        console.log(response.count);
        count = parseInt(response.count);
        $obj.find(".custom-tweet-button a").html(count);
      }
    })
  }	

twitterhtml.cfm

<div class="twitterDiv" rel="http://yoururlhere.com/whatever/article">
  <div class="custom-tweet-button">
    <a href="http://twitter.com/share?url=#urlencodedformat('http://yoururlhere.com/whatever/article')#" target="_blank"></a>
  </div>	
</div>