It's also not at all urgent.
Maybe in a decade or so someone we may be able to schedule someone to look at it, our calendar is filled with more urgent things to do (like reading nice books, watching movies, and talking to the dog) until then.
I am not able to get you , in what you are trying to come out.
I'm not trying to come out. :p What I am saying is that the original post had a requirement: i want the parent window to be closed ...without any alert to be displayed...
If you are going to do a self.close(), the page is going to give an alert in Internet Explorer "The webpage you are viewing is trying to close the window" (OK/Cancel). So the solution you posted is not what the original question expected.