<https://w3schools.invisionzone.com/topic/53171-problem-with-blur/#comment-292871>
<http://schema.org/text>
"You mean to close the window? Call the .close() method: http://www.w3schools.com/jsref/met_win_close.asp "
<https://w3schools.invisionzone.com/topic/53171-problem-with-blur/?tab=comments#comment-293006>