function showdiv() {
if (document.getElementById) { // DOM3 = IE5, NS6
document.getElementById('hideshow').style.display = 'block';
document.getElementById('showing').style.display = 'none';
}
else {
if (document.layers) { // Netscape 4
document.hideshow.display = 'block';
document.showing.display = 'none';
}
else { // IE 4
document.all.hideshow.style.display = 'block';
document.all.showing.style.display = 'none';
}
}
}

function hidediv() {

if (document.getElementById) { // DOM3 = IE5, NS6
document.getElementById('hideshow').style.display = 'none';
document.getElementById('showing').style.display = 'block';
}
else {
if (document.layers) { // Netscape 4
document.hideshow.display = 'none';
document.showing.display = 'block';
}
else { // IE 4
document.all.hideshow.style.display = 'none';
document.all.showing.style.display = 'block';
}

}
}