I read what reported in How do I change html structure of menu (primary links for example) to my own? but the accepted answer for that question is for Drupal 6.

How do I create a function that adds a CSS class or ID to a single "li" and "sub li"?

I read what reported in How do I change html structure of menu (primary links for example) to my own? but the accepted answer for that question is for Drupal 6.

How do I create a function that adds a CSS class or ID to a single "li" and "sub li"?

I readed this link for drupal 6: How do I change html structure of menu (primary links for example) to my own?

But in drupal 7? How to create a function that add class or id to a single "li" and "sub li"?

I read what reported in How do I change html structure of menu (primary links for example) to my own? but the accepted answer for that question is for Drupal 6.

How do I create a function that adds a CSS class or ID to a single "li" and "sub li"?