You are looking for the .elementFromPoint()
JavaScript/DOM method.
var elem = document.elementFromPoint(100, 100) // x, y
That returns a DOM node
, which of course then can be wrapped into a jQuery object:
$(elem).remove(); // for instance
I’m not that aware about the cross-browser compatibility and I would like some guys who know better to edit this post or write a comment about it.
Reference: .elementFromPoint()
Example Link: http://www.jsfiddle.net/YjC6y/22/