rewrite urls problem

hey i have a jump menu that when i select an option it filters a table. My problem is that i have a .htaccess file in place to rewrite the urls but when i select my option i get a 404 error.  I know this is something to do with my htaccess file not knowing what is going on so i am here asking for some help. I have posted some code snipets below:

My option code with a link to the url i want

 <option style="text-align:center;" value="<?php echo $row_config['website_url']; ?>content/<?php echo $_GET['id']; ?>/<?php echo $linkname ?>/filter/<?php echo $row_categories['cat_id']?>"><?php echo $row_categories['cat_name']?></option>

my htaccess file

Options +FollowSymLinks
RewriteEngine on
RewriteRule ^content/([^/\.]+)/([^/\.]+)/?$ index.php?id=$1
RewriteRule ^content/filter/([^/\.]+)/([^/\.]+)/?$ index.php?cat_id=$1
RewriteRule ^articles/([^/\.]+)/([^/\.]+)/?$ articles.php?articles_id=$1
RewriteRule ^home/ index.php [L]

Dee