Actually this module seems to be abandoned. And the use of drupal_add_library woks only if the module used the hook_library and I wanted to check it in the repo of jquery_plugin but these files .module aren't available. I don't know why.

But if you want use overlay, you can use directly the jQuery UI that is already included in Drupal 7.

Actually this module seems to be abandoned. Using drupal_add_library() works only if the module used hook_library(). I wanted to check it in the repository of jquery_plugin, but these files aren't available. I don't know why.

If you want to use overlays, you can use directly the jQuery UI that is already included in Drupal 7.