var type = "IE";
BrowserSniffer();
function BrowserSniffer() {
	if (navigator.userAgent.indexOf("Opera")!=-1 && document.getElementById) type="OP";
	else if (document.all) type="IE";
	else if (document.layers) type="NN";
	else if (!document.all && document.getElementById) type="MO";
	else type = "IE";	
}
function ShowLayer(id, action){
	if (type=="IE") eval("document.all." + id + ".style.display='" + action + "'");
	if (type=="NN") eval("document." + id + ".display='" + action + "'");
	if (type=="MO" || type=="OP") eval("document.getElementById('" + id + "').style.display='" + action + "'");
}