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) {
var menuArea = "menuArea";
	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]); }
		};}
	}
}


// registration system layers functions
function setVisibility(objectID,state) {
	var dom = findDOM(objectID,1);
	dom.visibility = state;
}

function toggleVisibility(objectID) {
	var dom = findDOM(objectID,1);
	state = dom.visibility;
	if (state == 'hidden' || state == 'hide' )
		dom.visibility = 'visible';
	else {
		if (state == 'visible' || state=='show')
			dom.visibility = 'hidden'; 
	else dom.visibility = 'visible';
	}
}


function findLeft(objectID) {
	var domStyle = findDOM(objectID,1);
	var dom = findDOM(objectID,0);
	if (domStyle.left)
		return domStyle.left;
	if (domStyle.pixelLeft)
		return domStyle.pixelLeft;
	if (dom.offsetLeft)
		return dom.offsetLeft;
	return (null);
}

function findTop(objectID) {
	var domStyle = findDOM(objectID,1);
	var dom = findDOM(objectID,0);
	if (domStyle.top)
		return domStyle.top;
	if (domStyle.pixelTop)
		return domStyle.pixelTop;
	if (dom.offsetTop)
		return dom.offsetTop;
	return (null);
}

function moveObjectTo(objectID,x,y) {
	var domStyle = findDOM(objectID,1);
		domStyle.left = x;
		domStyle.top = y;
}