function navHover(cell)
{
    if (cell.className != 'active')
        cell.className = 'hover';
}

function navOut(cell)
{
    if (cell.className != 'active')
        cell.className = '';
}

function navClick(cell)
{
    link = cell.getElementsByTagName("a")[0];
    if (link)
        window.location.href = link.href;
}