var doCheck = (document.all!=null);
if (doCheck == false) {
	versionNN = navigator.userAgent.toLowerCase();
	if (versionNN.search(/mozilla\/4/i) != -1)
		browser = "NN4";
	else 
		browser = "NN6";
} else {
	var agt = navigator.userAgent.toLowerCase();
	if ((agt.indexOf("msie") != -1) && (agt.indexOf("opera") == -1))
		browser = "IE";
	else
		browser = "OP";
}
function getLayer(id) {
	if (browser == "IE" || browser == "OP")
		return document.getElementById(id);
	else if (browser == "NN4")
		return document.layers[id];
	else
		return document.getElementById(id);
}
function showLayer(id) {
	if (window.timer) {
		hideLayer2(window.oldId);
		clearTimeout(window.timer);
	}
	var get = getLayer(id);
	if (get != null){
		if (browser != "NN4") {
			get.style.visibility = "visible";
			get.style.zIndex = 0;
		}
		else {
			get.visibility = "visible";
			get.zIndex = 0;
		}
	}
	else {
		document.getElementById(id).style.visibility = "visible";
		document.getElementById(id).style.zIndex = 0;
	}
}
function hideLayer(id) {
	window.oldId = id;
	window.timer = setTimeout("hideLayer2('" + id + "')", 100);
}
function hideLayer2(id) {
	var get = null;
	var get = getLayer(id);
	if (getLayer(id) != null) {
		if (browser != "NN4") {
			get.style.visibility = "hidden";
			get.style.zIndex = -1;
		}
		else {
			get.visibility = "hidden";
			get.zIndex = -1;
		}
	}
	else{
		document.getElementById(id).style.visibility = "hidden";
		document.getElementById(id).style.zIndex = -1;
	}
}