JQuery :: Modify To Toggle More Than One Row?

I'm trying to build a table that has hidden rows below certain shown rows.

How would I modify this script so that it shows all of the hidden rows below a row, but not the hidden rows throughout the entire table?

$
(
document
)

[Code].....

You can see the HTML table structure here, as well as it working with only 1 row. URL] I was able to get all the hidden rows throughout the entire table to show, but that's not what i'm looking for. I just want the hidden rows that are below their respective shown table rows.