If you want to temporary hidden it you can do: this.parentNode.style. Display='none'; in mind that the exclusion button is in a td. But if you want to really delete it from the html and the database: you need to make the same as above and a extra call to a function of php/plsqlwathever to delete from de db, I recommend using ajax to call it.
http://www.w3schools.com/ajax/default.asp.
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.