text: function do_reply(comment_id, to_user_name, to_user_name, discussion_id){
      $('#comment_id').val(comment_id);
      $('#to_user_id').val(to_user_id);
      $('#reply_content').attr('placeholder', '回复 ' + to_user_name + ' :');
  
      if (discussion_id == '-1'){
          $('#reply_form').appendTo($('#comment_reply_' + comment_id));
      } else {
          $('#reply_form').appendTo($('#discussion_reply_' + discussion_id));
      }
  
      $('#reply_form').show();    
  }
  
  function cancel_reply(){
      $('#reply_form').hide();
      $('#reply_content').val('');
  }
  
  