Nicely said HOO!
Maybe is wasn't either one. Maybe they nailed his hands(or wrists)to a peice of wood and then nailed, or hung, that to a tree.
Roman history says he was crucified. The Romans did this by using a cross. Discovery channel just had an excellent show about Jesus. I think it is going to air again in late April. They say cross also. They also say there is a piece of a cross dating to Jesus' day.
Break the chains that bind you,
unless, of course, you're into that sort of thing.