Twitter Roll

I have added my twitter updates to my website with the following code:

<div id="tweet"><ul id="twitter_update_list"></ul></div>

and then at the bottom of the page:

<script type="text/javascript" src="http://twitter.com/javascripts/blogger.js"></script>
<script type="text/javascript" src="http://twitter.com/statuses/user_timeline/samthetechie.json?callback=twitterCallback2&count=1">
</script>