<script type="text/javascript">
$(window).load(function(){
  $.getScript('http://widgets.twimg.com/j/2/widget.js', function(){
    $.getScript('/media/js/twitter.js', function(){
     $('#twtr-widget-1').appendTo('#twitter_p')
    })
  })
})
</script>
<script>
new TWTR.Widget({
  id: 'twitter_div',
  ...
</script>
</body>