function rollover_show(id) {
    var workNode = document.getElementById(id);
    if(workNode != null) {
        workNode.style.visibility = 'visible';
    }
}

function rollover_hide(id) {
    var workNode = document.getElementById(id);
    if(workNode != null) {
        workNode.style.visibility = 'hidden';
    }
}

function toggleElement(id) {
    return true;
    var workNode = document.getElementById(id);
    if(workNode != null) {
        if(workNode.style.visibility == 'visible') {
            workNode.style.visibility = 'hidden';
        } else {
            workNode.style.visibility = 'visible';
        }
    }
}