Pull image URL from gallery (ID = 1) created in NextGEN wordpress plugin [1], randomize & use as fullscreen background with jquery backstretch plugin [2]

gistfile1.txt

$(document).ready(function() {
      var bg = [
        <?php
          global $nggdb;
          $gallery = $nggdb->get_gallery(1, 'sortorder', 'ASC', true, 0, 0);
          foreach($gallery as $image) {
          echo '"'.$image->imageURL.'",';
           }
        ?>
      ];
      var rdm = Math.floor(bg.length * Math.random());

      $.backstretch( bg[rdm] );
    });

[1] - http://wordpress.org/plugins/nextgen-gallery/
[2] - https://github.com/srobbin/jquery-backstretch