Gallery Search… specific search??

Hi!

I would like to use a search function for nextgen gallery on just ONE page that will search in a picture archive. For the other pages, just posts will be presented after search.

This is what I want:

Page 1: Here I want an ngg-searchfunction form that only shows ngg-search results.
Page 2-5: Here I want a searchfunction that shows only posts but not any pictures. (It’s already working)

How do I do that?

On Page 1 I got a specific search form html code. What can I write there to make it search for only ngg-pictures?

<input type=”hidden” id=”1″ name=”page” value=”nggallery”> ???

And what do I have to change in search.php and functions.php?

Thanks in advance!

https://www.ads-software.com/extend/plugins/nextgen-gallery/