function showLayer(div) {
	if (document.all) document.all[div].style.visibility = "visible";
	if (document.layers) document.layers[div].visibility = "visible";
	if (document.getElementById && !document.all) document.getElementById(div).style.visibility = "visible";
}

function hideLayer(div) {
	if (document.all) document.all[div].style.visibility = "hidden";
	if (document.layers) document.layers[div].visibility = "hidden";
	if (document.getElementById && !document.all) document.getElementById(div).style.visibility = "hidden";
}