I searched everywhere here to see since so many people ask this question, but no matter what, I keep getting undefined..

function remove_item(itemid) {

    var window = top.location;

    var host = window.host;



    $.ajax({

        url: http://+host+/backend/remove_lockbox.php?id=+itemid,

        success: function() {

            $(document).ajaxStop(function(){

                window.top.location.reload();

            });

        }

    });

}

That is my code. I tried window.location.reload, host.location.reload... I tried everything and I keep getting undefined... The parent of location is always undefined whether it's window, host, window.top, ANYTHING.
Can someone PLEASE help me?