Hi.

With
https://www.drupal.org/node/1392702 and https://www.drupal.org/node/1778368 I got the Select lists working on my site. Now I want to have a feature where selecting something in the one checkbox automagically filters the other select list leaving only now valid options.

Lets say you have 3 content-types: Song, Artist, Label. Songs are referencing an artist, which are referencing a Label. Now I want to show a list of all Songs, and let them be filtered by labels and artist. This is working. What I need is:
If I filter the Label, restrict the artist select list to only those of that Label (instead all of them).

I can write modules and expect to have to wrote some jQuery to do that. My Question is:
1) Is there already something like this available and I just did not find it?
2) What are the steps necessary for me to do this? (Just an outline).

Thanks in advance.