RewriteEngine   On

RewriteCond     %{HTTP_USER_AGENT}     ^DoCoMo.* [NC,OR]
RewriteCond     %{HTTP_USER_AGENT}     ^J-PHONE.* [NC,OR]
RewriteCond     %{HTTP_USER_AGENT}     ^Vodafone.* [NC,OR]
RewriteCond     %{HTTP_USER_AGENT}     ^SoftBank.* [NC,OR]
RewriteCond     %{HTTP_USER_AGENT}     ^MOT-V980.* [NC,OR]
RewriteCond     %{HTTP_USER_AGENT}     ^MOT-C980.* [NC,OR]
RewriteCond     %{HTTP_USER_AGENT}     ^KDDI.* [NC,OR]
RewriteCond     %{HTTP_USER_AGENT}     ^.*UP.Browser.* [NC]

RewriteRule     ^$     http://www.runan.com/mb[R=302,L]