<?php

$jscode = <<<EOC

function select_year_calback(data)
{
  grid_update(grid);
  grid_update_filters(grid);
}

function select_year_status(obj, value, html)
{
  if (value.length)
    info('Jahr ' + value + ' ausgewählt');
  else
    info('');
}
EOC;

$javascript->add($jscode);

function discover_years()
{
  if (!is_array($_SESSION['years'])) {
    $sql = "SELECT DISTINCT date_part('year', datum) AS year FROM einsatz ORDER BY year";
    $info = query_db($sql);
    $_SESSION['years'] = array();
    foreach ($info as $row)
      $_SESSION['years'][] = $row['year'];
  }

  $options = array();
  foreach ($_SESSION['years'] as $year)
    $options[] = array('id' => $year,
		       'text' => $year);

  return $options;
}

?>