htaccess problem, overwrite?

I have a problem with the second code?

[Tarzanbeest]

Hello,

Sorry for my english,
But i have a big problem..

I have this code:

---------------------------
Options +MultiViews +FollowSymLinks
AddHandler x-httpd-php5 .php
RewriteEngine On

RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d

## Categorie
RewriteRule ^cat/(.*)$ index.php?url=categorieen/categorie/$1
RewriteCond %{REQUEST_URI} !(/$¦\.)

## Bekijken
RewriteRule ^([0-9]+)/(.*)/ index.php?url=advertenties/bekijken/$1

## Bekijken
RewriteRule ^members/wijzigen/ index.php?url=members/wijzigen
RewriteRule ^members/uitloggen/ index.php?url=members/uitloggen
RewriteRule ^/cat/members/inloggen/ index.php?url=members/inloggen
RewriteRule ^toevoegen/afronden/(.*) index.php?url=toevoegen/afronden/$1
RewriteRule ^zoeken/ index.php?url=zoeken/index
RewriteRule ^members/mijn_account/(.*)/ index.php?url=members/mijn_account/$1/
-------------------------

Now i have

url's like:

site.be/uitloggen/
....
AND
site.be/cat/topic/subtopic/

BUT, i don't want have the 'cat', i want:

site.be/topic/subtopic/

How can i fix it?