[DanInMa]

i screwed up sorry, syntax problem. I fixed it:

$(function () {
    $("#requestform").live("submit", function (e) {
        e.preventDefault(); //prevernt default form sumbit action
        var SubmitURL = "/staffpanel/_frontend/requests.php";
        var dataString = $('#requestform').serialize();
        $.ajax({
            type: "POST",
            url: SubmitURL,
            data: dataString,
            success: function () {
                alert("request sent!");
            }
        });
    });
});