function culture_endRequest(object, args) {
    for (desc in args.get_dataItems()) {
        if (args.get_dataItems()[desc] == "close") {
            $('#' + desc).slideUp(500);
        }
    }
}

$(document).ready(function() {
    Sys.WebForms.PageRequestManager.getInstance().add_endRequest(culture_endRequest);
});