Maintenance with htaccess

Hi

I make a page (503.php) basic with my picture and a texte “sorry maintenance” I put it on the roots and in my htaccess I write :
————————————————————
SetEnv PHP_VER 5
SetEnv REGISTER_GLOBALS 0
Options +FollowSymLinks
RewriteCond %{REQUEST_URI} !^/images/.*
RewriteEngine On
RewriteBase /
RewriteCond %{REMOTE_ADDR} !^xx\.xxx\.xxx\.xxx
RewriteCond %{REQUEST_URI} !^/503.php [NC]
RewriteRule .* /503.php [L]
—————————————————————-
Everyone goes to this page, good !
exept me because I write my IP adress, good too… BUT !!

but I can not go anywhere else in the site !
juste the home

Can you help me please
thanks