gistfile1.html

<script type="text/javascript">
$('.hatena-module-category').find('a').each(function(){
  var $self = $(this);
  var text = $.trim($self.text());
  var count = text.match(/\((\d+)\)$/)[1];
  $self.attr('data-count', parseInt(count));
  $self.text('');
  var name = text.split(/\s+/)[0];
  $('<img/>').attr('src', 'http://' + name + '.jpg.to').appendTo($self);
});
</script>