I've added a block called 'Course Information', configured the block to display on a particular group of pages (courses/full-time/*). This works fine, but I don't know to configure Drupal to display a different icon for each of the pages.
At present, the block contains:
<img alt="An icon symbol" src="/sites/default/files/images/icon-1.png" />
This will display the same image on each page that the block is used. How would I go about having a dynamic filename inserted, like icon-2.png, icon-3.png, icon-n.png?