[users@httpd] Hiding directory from the browser address field

["José Euclides Silva Junior" <euclidesjr2005@xxxxxxxxx>]

---------- Forwarded message ----------
From: José Euclides Silva Junior <euclidesjr2005@xxxxxxxxx>
Date: 02/08/2006 17:17
Subject: Hiding directory from the browser address field
To: users-info@xxxxxxxxxxxxxxxx

Hi guys,
i need to hide the application(Java) root directory from the browser, as you can see at these steps example:
1) Http request: www.xxxx.com
2) Apache runs module Alias: redirect www.xxxx.com to www.xxxx.com/somedir/
3) App runs and Apache returns www.xxxx.com/somedir/  to the browser

But, at this thime(step 3) i need to alter some http header field, because Apache must JUST return " www.xxxx.com" to the browser, instead of " www.xxxx.com/somedir". How coud i do it? Any alias ou rewrite directive available?
Thanks in advance, Euclides.