function AOVisibleAuto()
{
    AOVisible(document.getElementById('divAO').style.display != 'block');
}
function AOVisible(visible)
{
    if(visible==true)
    {
        document.getElementById('divAO').style.display = 'block';
        document.getElementById('showHideAO').style.display = 'none';
    }
    else
        document.getElementById('divAO').style.display = 'none';
}