$('#filter-form').ajaxForm({
  success: function(responseText, statusText)  {
    var data = $.parseJSON(responseText);
    accidents_layer.setMap(null);
    accidents_layer = new google.maps.FusionTablesLayer(433634, {
      query: data.map_query});
    accidents_layer.setMap(map);
    $('#filter-results').html(data.results);
  }
});