exclude specific pages from search

Aloha 🙂

I got a little problem… I want to create a searchform that exclude all post and some specific pages. My website is [url=http://www.ukuleleroot.com]

I have searched and found a couple of solutions, but no one that have worked for me.

I have succeeded creating a searchform there will exclude all post (where -1,-5,-6 are the id’s of the post category’s):

<form method=”get” id=”searchform” action=”<?php bloginfo(‘url’); ?>/”>
<div>
<input type=”text” value=”<?php the_search_query(); ?>” name=”s” id=”s” />

<input type=”hidden” name=”cat” value=”-1,-5,-6,” />

<input type=”submit” id=”searchsubmit” value=”<?php _e(‘Search’,’Glow’); ?>” />
</div>
</form>

Is it possible to add a ekstra input there will sort out page id’s?

If that isn’t possible; I have found a code to be placed in functions.php:

function SearchFilter($query) {
if ($query->is_search) {
$query->set(‘post_type’,’post’);
$query->set(‘cat’,’-1,-5,-6,’);
}
return $query;
}
add_filter(‘pre_get_posts’,’SearchFilter’);

But the code just remove all pages :O

Best regards Bjørn Jensen