function show() {
	
	ns4 = (document.layers)? true:false;
	
	for (var i = 0; i < show.arguments.length; ++i) {
		var a = show.arguments[i];
		if (ns4) {
			document.layers[a].position = "absolute";
			document.layers[a].visibility = "show";
		} else {
			document.getElementById(a).style.visibility = "visible";
		}
	}
}


function hide() {
	
	ns4 = (document.layers)? true:false;
		
	for (var i = 0; i < hide.arguments.length; ++i) {
		var a = hide.arguments[i];
		if (ns4) {
			document.layers[a].visibility = "hide";
		} else {
			document.getElementById(a).style.visibility = "hidden";
		}
	}
}