function lowlight(event) 
{
    event.style.filter = '';
}

function highlight(event) 
{
    event.style.filter = 'Light';
    
    if (event.filters)
    {
        event.filters.Light.Addpoint (60, 0, 40, 215, 215, 215, 85);
        event.filters.Light.Addpoint (0, 60, 40, 215, 215, 215, 85);
        event.filters.Light.Addpoint (30, 30, 40, 215, 215, 215, 85);
        event.filters.Light.Addpoint (60, 60, 40, 255, 200, 200, 100);
    }
}