How do I appropriately acknowledge "Happy Birthday" on the Facebook page of someone who has died?

[Adamismyname]

I just was looking at my Facebook birthday calendar and Monday is the birthday of a man I know (friend of my grandfather's) who died last summer. I don't want to write "Happy Birthday Bill" since he is dead but I would want to acknowledge something respectful for his family to see as his grandkids set him up with Facebook when he was home with colon cancer. How would I appropriately word it as he still has an account set up as if he were alive and at Christmas I saw a few people had written things like "thinking of you".

[Schuyler]

Just add Requiescat in Pace, dear...you are in my prayers and thoughts on this day.

[633]

"On special occasions such as this, Bill is always in my thoughts and in my heart. He was a great man, and I truly miss him very much."

[whimsy]

please do not do anything via facebook. it's not the right thing to do. his family will obviously be sad that his birthday has come up, but it's a private sadness, not yours.

[Patricia]

Don't.