site 5x faster via mod_rewrite, but CSS images are broken

Question

I am using .htaccess to accelerate a site with the following redirects:

request for http://example.com/images/name.jpg  routed to  http://i.example.com/name.jpg
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Answer 1

I was able to resolve this by not trying to incorporate directories into the subdomains:

request for domain.com/images/  routed to  i.domain.com/images/
request for domain.com/css/     routed to  c.domain.com/css/

It works perfectly and is still extremely fast.

There seems to be a bug in modern browsers where a css request that is redirected will apply only the new domain, leaving the original directories as part of the request:

If a css image at url(domain.com/images/name.jpg) is redirected to i.domain.com/name.jpg, the browser will mistakenly request i.domain.com/images/name.jpg.