to fix the Lightbox issue.....

In tpl_header.php add this code:

Code:
   <div class="flash"><?php require($template->get_template_dir('tpl_drop_menu.php',DIR_WS_TEMPLATE, $current_page_base,'common'). '/tpl_drop_menu.php');?></div>

Just add: <div class="flash"> menu code here. </div> around the menu code.

This will fix the lightbox issue at least it does for me. You get the same issue with flash objects.

Ps. make sure you have the latest lightbox