function hideDiv(idHideshow) {
    if (document.getElementById) { // DOM3 = IE5, NS6
        document.getElementById(idHideshow).style.visibility = 'hidden';
    }
    else {
        if (document.layers) { // Netscape 4
            document.idHideshow.visibility = 'hidden';
        }
        else { // IE 4
            document.all.idHideshow.style.visibility = 'hidden';
        }
    }
}

function showDiv(idHideshow) {
    if (document.getElementById) { // DOM3 = IE5, NS6
        document.getElementById(idHideshow).style.visibility = 'visible';
    }
    else {
        if (document.layers) { // Netscape 4
            document.idHideshow.visibility = 'visible';
        }
        else { // IE 4
            document.all.idHideshow.style.visibility = 'visible';
        }
    }
}