Show childgalleries based on TV

I need a quick help here...

How can I show childgalleries based on current document which has explicit TV?

Example:
- I’m on a picture gallery of "Club 1" and i want to show other related galleries for that club (TV name is "Club 1") in the sidebar
- I’m on a picture gallery of "Club 2" and i want to show other related galleries for that club (TV name is "Club 2") in the sidebar
- etc...