function toggleCheckboxes(elem, className) {
    var checkboxes  = document.getElementsByClassName(className);

    $A(checkboxes).each(
        function(box) {
            box.checked = elem.checked;
        }
    );
}

function countCheckedBoxes(className) {
    var checkedBoxes = 0;
    var checkboxes   = document.getElementsByClassName(className);

    $A(checkboxes).each(
        function(box) {
            if (box.checked) {
                checkedBoxes++;
            }
        }
    );

    return checkedBoxes;
}

function submitTask(task, className) {
    if ($F(task) != '') {
        if (countCheckedBoxes(className) > 0) {
            var confirmSubmit = confirm('Wollen Sie dies Aktion wirklich ausfuehren?');

            if (confirmSubmit == true) {
                alert('ok');
            }
        } else {
            $(task).setValue('');

            alert('Es wurden keine Datensaetze ausgewaehlt.');
        }
    }
}

function confirmSubmit() {
    var submit = confirm('');

    return submit;
}

function sortView(formName, sortKey)
{
    var order = 'asc';

    $('sort').setValue(sortKey);

    if($F('order') == order) {
        order = 'desc';
    }

    $('order').setValue(order);

    $(formName).submit();
}
/*
function viewAll() {
    var foundRows = $F('found_rows');

    $('offset').setValue(resultsNum);
}
*/
function viewResultsPerPage(resultsPerPage) {
    if(resultsPerPage > 0) {
        $('view_form').submit();
    }

    $('view_form').submit();
}

function viewPage(dir) {
    switch(dir) {
        case 'next':
            var rowCount = parseInt($F('row_count'))+parseInt($F('offset'));

            $('row_count').setValue(rowCount);
        break;

        case 'back':
            var rowCount = parseInt($F('row_count'))-parseInt($F('offset'));

            $('row_count').setValue(rowCount);
        break;
    }

    $('view_form').submit();
}