template.php

<?php
function rsn_base_link(&$variables) {
 //adds the rel attribute to lightbox2 links in order to fire the proper javascript
 if (preg_match("/node\/\d*\/lightbox2/", $variables['path'])) {
  //Looks up node type with views, much less expensive than node_load():
  $type = get_view_results_with_arguments('rsn_articles', 'panel_pane_8', array(arg(1)));
  $type = ($type[0]->node_type);

  /*We'll transform these links everywhere except the media_gallery node page.
  * We exclude the media_gallery page because, on those pages links of the format
  * <a href="#slide-2"> fulfill the if() condition above
  */
  if ($type != 'media_gallery') {
    $variables['options']['attributes']['rel']='lightframe[|width:965px; height:758px;]';
  }
}
 return '<a href="' . check_plain(url($variables['path'], $variables['options'])) . '"' . drupal_attributes($variables['options']['attributes']) . '>' . ($variables['options']['html'] ? $variables['text'] : check_plain($variables['text'])) . '</a>';
}