Your use of words suggests you need to read up on the HTTP request/response process and get a better understanding of what you're trying to do - because you're already doing the same thing you're asking with that code.

Start at the beginning and describe the general problem you're trying to solve / what you're trying to achieve - because if this isn't a learning exercise there's probably already something that does what you want (and it'll be better than that code), but if it is a learning exercise, I'm not just going to hand you a block of code that doesn't help you understand.

I think I'm having a hard time thinking of how to select the folder I want and carry that to another page. 

I have a page that I use to merge .mp3 files and I've been editing the code with the folder I want to run the code on.  I know the code I posted here will give me what I need, but I don't know what variable is holding the final result and if I found it I don't know how to carry that result to a different page than the ones I posted here.

Why not use a more full-featured widget, like RichFilemanager or Webix File Manager (on GitHub), which should provide hooks for when you've selected the relevant file/directories.

I don't have a preference, but I only need to see directories/sub dirs.  I'll look at the ones you posted.  I've been messing with the one I have for about two hours now and I can't get it for the life of me!

Those look nice but they do way more than I need.  I just need a list of dirs and subdirs for a specified path and when I drill down and click select that's the value I get to use in another page.

I was able to find some code that I could figure out and got this working!

> Those look nice but they do way more than I need.

They're full-featured file managers, which will include the feature of easy integration, and should still be stylable to a simple interface.