// JavaScript Document
var timerID = null;
var timerOn = false;
var timecount = 1000;
var what = null;
var newbrowser = true;
var check = false;

function init() {
	if (document.layers) {
		layerRef = "document.layers";
		styleSwitch="";
		visibleVar="show";
		what="ns4";
	} else if (document.all) {
		layerRef = "document.all";
		styleSwitch=".style";
		visibleVar="visible";
		what="ie4";
	} else if (document.getElementById) {
		layerRef = "document.getElementById";
		styleSwitch=".style";
		visibleVar="visible";
		what="dom1";
	} else {
		what="none";
		newbrowser = false;
	}
	check = true;
}
function showLayer(layerName) {
	
	hideAll();
	if (check) {
		if (what == "none") {
			return;
		} else if (what == "dom1"){
			document.getElementById(layerName).style.visibility="visible"; 
			stopTime();
		} else {
			eval(layerRef + '["' + layerName + '"]' + styleSwitch + '.visibility="' + visibleVar + '"');
			stopTime();
		}
	} else {
		return;
	}
}
function hideLayer(layerName) {
	if (check) {
		if (what == "none") {
			return;
		} else if (what == "dom1") {
			document.getElementById(layerName).style.visibility="hidden"; 
		} else {
			eval(layerRef+'["' + layerName + '"]' + styleSwitch + '.visibility="hidden"'); 
		}
	} else {
		return;
	}
}
function hideAll() {
	hideLayer("table_nav");
	hideLayer("bed_nav");
	hideLayer("bath_nav");
	hideLayer("catering_nav");
}
function startTime() {
	if (timerOn == false) {
		timerID = setTimeout("hideAll()",timecount);
		timerOn = true;
	}
}
function stopTime() {
	if (timerOn) {
		clearTimeout(timerID);
		timerID = null;
		timerOn = false;
	}
}
function onLoad() {
	init();
}