anchor.diff:            target.removeClass('addable');
             target.addClass('spinning');
             speaker_id = target.attr('speaker_id');
  -          $.get(
  -            '<%= manage_proposal_speakers_path(path_record) %>?speakers='+extract_speaker_frags(), {
  +          $.post(
  +            '<%= manage_proposal_speakers_path(path_record) %>', {
  +              'authenticity_token': window._token,
  +              'speakers': extract_speaker_frags(),
                 'add': speaker_id
  -            }, function(data) {
  -              $('#manage-speakers').html(data);
  +            }, function(response) {
  +              $('#manage-speakers').html(response);
                 bind_remove_speakers();
                 $("#add_speaker_selector").focus();
                 target.removeClass('spinning');
  
positive.code: 
          target.removeClass('deletable');
          target.addClass('spinning');
          $.get(
            '<%= manage_proposal_speakers_path(path_record) %>?speakers='+extract_speaker_frags(), {
              'remove': speaker_id
            }, function(data) {
              $('#manage-speakers').html(data);
              bind_remove_speakers();
              $("#add_speaker_selector").focus();
            }
  
negative.code:     $('#add-speakers-form').submit(function (event) {
        event.preventDefault();
        query = $('#speaker-search-field').val();
        $.post(
          '<%= search_proposal_speakers_path(path_record) %>', {
            'authenticity_token': window._token,
            'speakers': extract_speaker_frags(),
            'search': query
          }, function(response) {
            $('#speaker-search-results').html(response);
            bind_add_speakers();
            $("#speaker-search-field").focus();
          }
  