example of jquery on and off, similar to bind and unbind

jquery-on-off.js

$(function() {
    $(window).on("mousemove", mouseMoveHandler);
      function mouseMoveHandler(e) {
        var pos = e.clientY;
        console.log(pos);
        if (pos < 15) {
            //key take away, is once you've got the event you want to trigger, it's good to "Turn OFF" the listner
            $(window).off( "mousemove", mouseMoveHandler );
            $(".footer-popup").animate({
                bottom: 0
            }, 700);
            $(".closeit, .button").click(function(e) {
                $(".footer-popup").animate({
                    bottom: -100
                }, 400);
                e.preventDefault();
            });
        }
    }
});