function resetAllComboboxes(submit) {
        var form = submit.form;
        var checkboxesName = submit.name.substring(3).toLowerCase() + '[]';
        
        var arr = form[checkboxesName];
        if (!arr) return;

        if (isNaN(arr.length)) {
            arr.checked = submit.checked;
        }
        else {
            for (var i = 0; i<arr.length; i++) {
                arr[i].checked = submit.checked;
            }
        }
    }