Libraries api - sinsunsan/archiref_wiki GitHub Wiki
How to add a js stored in the library dir
http://api.drupal.org/api/drupal/includes%21common.inc/function/drupal_get_path/7#comment-13414
Exemple with modernizr
<?php
drupal_add_js(libraries_get_path('modernizr') . '/js/modernizr-1.6.min.js', array('group' => JS_THEME, 'every_page' => TRUE));
?>