<!--
var ie = (document.all) ? true : false;
var ns4 = (document.layers) ? true : false;
var ns6 = (document.getElementById && !document.all) ? true : false;

function showLayer(layer)
{
if (ie) {document.all[layer].style.visibility = "visible";}
if (ns4) {document.layers[layer].visibility = "show";}
if (ns6) {document.getElementById([layer]).style.display = "block";}
}

function hideLayer(layer)
{
if (ie) {document.all[layer].style.visibility = "hidden";}
if (ns4) {document.layers[layer].visibility = "hide";}
if (ns6) {document.getElementById([layer]).style.display = "none";}
}
-->
