You need to understand what map means, it's a simple definition on the click areas of an image.
It seems that when you move mouse in the map area, an alert will pop out, at this point, your mouse is out of the map area, so the onmouseleave event was triggered, so there are two alerts. If you replace them with console. Log, it should be fine.
Test it here: http://jsfiddle.net/8ZXb9.
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.