First off, I'd be using jQuery or MooTools to do the ajax calls. They have cross browser implementations for this, the kind of thing you are trying to do in all the most part in the first piece of script you posted.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.