Proplem in here in $_GET'oldid' when you click on another link or refresh the page without it the variable $oldID will be empty and the sql will fail. And the js function keep calling itself with nothing changed every time an error accured and the ajax will keep calling keep failing wich will result to an infinite loop that will hang your site and I guess if you check it on firebug you will see that happening.
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.