Drupal - Get node permalink

node.tpl.php

<?php print get_node_permalink($node); ?>

template.php

<?php
/**
 * Get node permalink (Drupal 6).
 *
 * Drupal functions references:
 * url():
 * http://api.drupal.org/api/drupal/includes!common.inc/function/url/6
 * drupal_lookup_path():
 * http://api.drupal.org/api/drupal/includes!path.inc/function/drupal_lookup_path/6
 *
 * Usage:
 * In node.tpl.php paste: <?php print get_node_permalink($node); ?>
 *
 * @param object $node
 *  Node object.
 *
 * @return string
 *   node absolute permalink.
 */
function get_node_permalink($node) {

  $url = url(drupal_lookup_path('alias', 'node/' . $node->nid), array('absolute' => true));

  return $url;
}