[Nexus]

SERblY, может так?

<button class="btn btn-primary btn-lg" id="show_notepad" data-modal="#myModalnote">
  Блокнот
</button>

<!-- Modal -->
<div class="modal fade" id="myModalnote" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true">
  <div class="modal-dialog">
    <div class="modal-content">
      <div class="modal-header">
        <button type="button" class="close" data-dismiss="modal" aria-hidden="true">&times;</button>
        <h4 class="modal-title" id="myModalLabel">Блокнот</h4>
      </div>
      <div class="modal-body" data-path="{%$settings.path%}notepad_ajax/">
		Loading...
	  </div>
      </div>
      <div class="modal-footer">
        <button type="button" class="btn btn-default" data-dismiss="modal">Закрыть</button>
      </div>
    </div><!-- /.modal-content -->
  </div><!-- /.modal-dialog -->
</div><!-- /.modal -->
<script type="text/javascript">
	$(function(){
		$('#show_notepad').click(function(){
			var $t=$(this);
			if($t.attr('disabled')!==undefined)
				return;
				
			var $modal=$($t.attr('disabled',true).data('modal')),
				$modal_body=$modal.find('.modal-body');
				
			$modal.modal('show');
			$.post($modal_body.data('path'),function(res){
				$modal_body.html(res);
			}).complete(function(){
				$t.removeAttr('disabled');
			});
		});
	});
</script>