[users@httpd] split the error_log for each virtual host in Apache 2.2

[Ren, Lingyun]

Hi,


I am trying to implement the dynamic virtual host with Rewrite in Apache 2.2. 
The codes are shown bellow,


<VirtualHost *:80>
RewriteEngine on
RewriteCond %{HTTP_HOST} ^(.+)\.domain\.com$ [NC]
RewriteRule ^(.*) /home/%1/public_html$1
# record all error_log entries for virtual hosts
ErrorLog logs/cust-logs/vh_error_log
</VirtualHost>

One requirement is to create error_log for each virtual host. Is there any way 
to split this vh_error_log for each virtual host?
Or is there any good way to create the error_log for each virtual host?

Thank you,
Lingyun