isIE4 = (document.all && !document.getElementById) ? true : false;
isIE5 = (document.all && document.getElementById) ? true : false;
isNS4 = (document.layers) ? true : false;
isNS6 = (!document.all && document.getElementById) ? true : false;

function hide (name) {
	if (isNS4)
		{
			document.layers[name].visibility = "hide";
			document.layers[name].display = "none";

		}
	else
		{
		   elm = document.getElementById(name);
		   elm.style.display = "none";
		   elm.style.visibility = "hidden";
		 }
	}
	
function show (name) {
	if (isNS4)
		{
			document.layers[name].visibility = "show";
			document.layers[name].display = "inline";
		}
	else
		{
			elm = document.getElementById(name);
			elm.style.display = "inline";
			elm.style.visibility = "visible";
		}
	}