Thank you Conor, that worked beautifully! :)

I had one more question.

I noticed the link to the notification form uses the full URL. Since I'm using only one product type, it was pretty easy to change the filename FILENAME_PRODUCT_INFO so it matched my product type, but it might get more cumbersome for those with more than one product type.

Is it possible just to build a link with the bookmark (ie. a href=#back_in_stock_notification_form instead of a href="http://www.domain.com/index.php.....#back_in_stock)?