How to display more lines in the taxonomy selection box

I don't think a "resizable" select is built into drupal. But there is a "#size" form field setting that could make it more than 4. The question then becomes how large to make it. Any preference?

Some tips for a long timed post:

• Adding .resizable(); to the select element using jQuery makes it resizable:
$('#edit-tac-lite-grants-scheme-1-1-3').resizable();

• hack _tac_lite_term_select function in tac_lite.module file to add '#size' => 20 to the $field_array variable:

function _tac_lite_term_select($v, $default_values = array()) {
  $tree = taxonomy_get_tree($v->vid);
  $options = array(0 => '<' . t('none') . '>');
  if ($tree) {
    foreach ($tree as $term) {
      $choice = new stdClass();
      $choice->option = array($term->tid => str_repeat('-', $term->depth) . $term->name);
      $options[] = $choice;
    }
  }
  $field_array = array(
    '#type' => 'select',
    '#title' => $v->name,
    '#default_value' => $default_values,
    '#options' => $options,
    '#multiple' => TRUE,
    '#size' => 20, // EXPANDS THE NUMBER OF ITEMS SHOWN IN THE SELECT BOX
    '#description' => $v->description,
  );
  return $field_array;
}

Shouldn't be hard to add this in code ;-)