.htaccess mod_rewrite URL making relative directories break

[jassinc]

Okay so I'm rewriting a URL domain.com/id/text to domain.com/page.php?id=id using mod_rewrite / htaccess

    Options +FollowSymlinks
    RewriteEngine on
    RewriteCond %{http_host} ^webresauce.com [nc]
    RewriteRule ^(.*)$ http://www.webresauce.com/$1 [r=301,nc]
    
    # Rewite URL Starts here
    RewriteCond %{REQUEST_FILENAME} !-f
    RewriteCond %{REQUEST_FILENAME} !-d
    RewriteRule ^([^/]+)/([^/]+)/?$ read-post.php?id=$1&n=$2 [QSA,L]

It does what it's supposed to except the images and links all think they're in the folder domain.com/id/ - they obviously aren't. I want to avoid using a full URL for the images etc so I don't need to change my developing URLs and Live URLs among other things.

Is there anyway using htaccess I can make it so it gets the files from the base directory not the non-existant one.

This:
http://www.webresauce.com/5712/gfhhdfg

Should look like this:
http://www.webresauce.com/read-post.php?id=5712

Any help would be much appreciated

[linewire]

I have been having the exact same issue and can't find the solution anywhere X__X