DirectoryIndex index.php index.html index.htm

#AddHandler application/x-httpd-php .php .phtml

Options +FollowSymlinks
RewriteEngine on
RewriteBase /
RewriteRule ^manage?$ manage/index.php [QSA,L,T=application/x-httpd-php]
RewriteRule ^manage/?$ manage/index.php [QSA,L,T=application/x-httpd-php]
RewriteRule ^([^/\.]+)/?$ content.php?id=$1 [QSA,L,T=application/x-httpd-php]
RewriteRule ^([^/\.]+)/([^/\.]+).html content.php?id=$1 [QSA,L,T=application/x-httpd-php]
