How to notify other pages of gallery update?

[Tancred]

Hi
I currently use a PHP script to display on my front page when other areas of the site are updated.  This script just displays the date of the file on my index page so people can see when it was lasted updated.

Do anyone know of a way to display on other pages when the gallery was last updated?  That is when new images were uploaded?  I'm not that worried about comments etc.

Thanks
Tancred