Pagination with Tags - HELP

[TreeFolx]

Hello,
 I have problem with my pagination script, I tried to add tags to it but selecting second page (next page) when tag is working and filter content of the page, gets me back to second page with content without tag.

It should look like this:
gallery/page/2/?s=&tag=2
instead:
gallery/page/2

I just dont know what to do. Can you help me out?

My pagination script:
<?php foreach ($this->pagesInRange as $page): ?>
                <?php if ($page != $this->current): ?>
                    <li><a href="<?php echo $this->url($this->route, array('page' => $page ), true); ?>"><?php echo $page; ?></a></li>
                <?php else: ?>
                    <li class="active"><a href="#"><?php echo $page; ?></a></li>
                <?php endif; ?>
            <?php endforeach; ?>

[blacknight]

add the 'tag' => $_GET['tag'] in the array with the page number

 

$this->url($this->route, array('page' => $page,  'tag' => $_GET['tag'] )