A few images of support from Europe:
Real Madrid:
Sevilla vs. Barcelona:
Cesena (Nagatomo's club before Inter)
And one that is really nice, Hulk from FC Porto provides a personal message (he played in Japan for a few years before going to Portugal):
My Portuguese isn't fantastic; it either says, "My heart weeps for Japan," or, "Japan, my heart weeps."
EDIT: Just had confirmation that it says, "Japan, my heart weeps."
Also, I think those images aren't working because of the Japanese in them. But if you just copy and paste the URLs into your browser, they'll work.