This page is for sample for Google Sites help discussion.

We want to link to from this site.
http://sites.google.com/site/yumanomemo/happyou-shiryou-okiba/sparking_.pdf?attredirects=0
http://sites.google.com/site/yumanomemo/happyou-shiryou-okiba/sparking_.pdf?attredirects=0

from http://sites.google.com/site/matcha445/test-for-googlehelp
you can see correct link to
http://sites.google.com/site/yumanomemo/happyou-shiryou-okiba/sparking_.pdf?attredirects=0

but
seeing from http://matcha445.techtalk.jp/test-for-googlehelp
http://sites.google.com/site/yumanomemo/happyou-shiryou-okiba/sparking_.pdf?attredirects=0
will be link to
http://matcha445.techtalk.jp/site/yumanomemo/happyou-shiryou-okiba/sparking_.pdf?attredirects=0

Solution is rewriting rule is not so good
rewrite
http://sites.google.com/site/matcha445/
to
http://matcha445.techtalk.jp/

not
http://sites.google.com/
to
http://matcha445.techtalk.jp/