Theme a specific block id

Question

I am looking for a simple and effective way to implement template for specific block IDs.

From what I read in Author information lost after saving node and Drupal 6 Template Suggestions, I came up with the following code, which doesn't seem to work:

function mytheme_preprocess_block(&$vars) { 
  array_unshift($vars['template_files'], 'block-' . $vars['region'] . '-' .   filter_xss($vars['id'])); 
} 

From the Drupal documentation it should block-module-delta.tpl.php.

• Delta is the block ID, that's ok
• Module? What's the module here it's a custom block created by adding a block.

Answer 1

Use Firebug to inspect the generated HTML to get the block name|module !

Answer 2

Have you checked out the skinr module? http://drupal.org/project/skinr

http://www.youtube.com/watch?v=NRsbVguQ7b4

You can add classes to particular blocks and reuse styles. This can be very helpful if you're using a grid system or any of the grid themes.