Base href ignored in IE9

Question

I use a rewrite methode:

RewriteEngine on
RewriteRule ^page/([^/\.]+)$ search.php?q=$1

for prevent affecting on url of css and images , i used <base href="http://localhost/project/" /> at the page header.

in FF and Chrome everything works fine, but in IE9 it still adds "page" (rewrited url) to all page urls and makes: http://localhost/project/page

what is problem?