var isDHTML = 0;
var isLayers = 0;
var isAll = 0;
var isID = 0;

if (document.getElementById) {isID = 1; isDHTML = 1;}
else {
browserVersion = parseInt(navigator.appVersion);
if ((navigator.appName.indexOf('Netscape') != -1) && (browserVersion == 4)) {isLayers = 1; isDHTML = 1;}
else {
if (document.all) {isAll = 1; isDHTML = 1;}
}}

function findDOM(objectID,withStyle) {
	if (withStyle == 1) {
		if (isID) { return (document.getElementById(objectID).style) ; }
		else { 
			if (isAll) { return (document.all[objectID].style); }
		else {
			if (isLayers) { return (document.layers[menuArea].layers[objectID]); }
		};}
	}
	else {
		if (isID) { return (document.getElementById(objectID)) ; }
		else { 
			if (isAll) { return (document.all[objectID]); }
		else {
			if (isLayers) { return (document.layers[menuArea].layers[objectID]); }
		};}
	}
}


var objectIDCurr = 'form1';

function setVisibility(objectID) {
	var domNew = findDOM(objectID,1);
	var domCurr = findDOM(objectIDCurr,1);
	domCurr.visibility = "hidden";
	domNew.visibility = "visible";
	domNew.display = "block";
	objectIDCurr = objectID;
	setTimeout("hideVisibility('form1');",1800000);
}

function hideVisibility(objectID) {
	var domNew = findDOM(objectID,1);
	var domCurr = findDOM(objectIDCurr,1);
	domCurr.visibility = "visible";
	domNew.visibility = "hidden";
	domNew.display = "none";
	objectIDCurr = objectID;
}