Why not to use a pop-up window

If you're using a pop-up window on your website, you're doing it wrong.
It's akin to using nested tables for display, fer chrissakes!

Reasons why it's wrong:

• It's a poor user experience because the user doesn't get any of the usual browser functionality in the pop-up window, like the back button or the icon that tells you the page is loading.
• I'm sure I'll think of some more later

Add to breadcrumb trail in phpBB

Do this before loading the template:

$template->assign_block_vars('navlinks', array(
    'FORUM_NAME'    => "link display text",
    'U_VIEW_FORUM'  => "http://url-of-page"
));