Using mod_rewrite to rewrite site root

I'm trying to have relative links that are preceded with a forward slash (/) get rewritten with mod_rewrite to refer to the site root.

I have site:

http://localhost/mysite/ 

and I have numerous references, for example, in my css directory, formatted like such:

background: url('/img/background.jpg');

I would like to use mod_rewrite to point that at开发者_StackOverflow中文版:

http://localhost/mysite/img/background.jpg

But right now, it is pointing to:

http://localhost/img/background.jpg

I apologize in advance if this is a no-brainer, but I'm new to mod_rewrite, and I have so far been unsuccessful in getting this to work!

---

This is not a good thing to do. It is duct-taping a mistake that should be fixed at its core.

By rewriting URLs this way, you risk breaking links in other sites on localhost, for example, and it is a long-term maintenance nightmare having to deal with URLs outside your site's root directory.

Consider using relative links in your CSS instead, e.g.

background: url('../img/background.jpg');

if the images are in a sibling directory of where your CSS style sheet is in.

Links in style sheets are always relative to the location the style sheet is in - not the HTML file that uses it. That makes it very easy to use relative links in style sheets.