function showLayer(layerName)  {  

    if (layerName == "staff_member1_on") {
        return;
    }

    document.getElementById(layerName).style.visibility='visible'; 


}


function hideLayer(layerName)  {  

    if (layerName == "staff_member1_on") {
        return;
    }

    document.getElementById(layerName).style.visibility='hidden';  

}