$(document).ready(function() {
    $("#registerformenhär").submit(function() {
        unameval = $("#regusername").val();
        pwordval = $("#regpassword").val();
        $.post("ajax/register.php", {
            username: unameval,
            password: pwordval
        }, function(data) {
            if (data == "yes") {
                $("#reply").html("YES!")
            } else {
                $("#reply").html("NO!")
            }
        });
        return false;
    });
    });