// JavaScript for Switching Visible Div sections on Compare Pages

function setLayer(objectID,layerNum, layerVis, layerDisplay) {
	var object = document.getElementById(objectID);
	object.style.zIndex = layerNum;
	object.style.visibility = layerVis;
	object.style.display = layerDisplay;
}

function findLayerZ(objectID) {
	var object = document.getElementById(objectID);
	if (object.style.zIndex != null)
		return object.style.zIndex;
	return (null);
}

function findLayerVis(objectID) {
	var object = document.getElementById(objectID);
	if (object.style.visiblity != null)
		return object.style.visiblity;
	return ("hidden");
}

function findLayerDisplay(objectID) {
	var object = document.getElementById(objectID);
	if (object.style.display != null)
		return object.style.display;
	return ("non");
}

var prevObjectID = "compareLayer13";
var prevLayer = 0;
var prevVisible = "hidden";
var prevDisplay = "none";

function swapLayer(objName) {
	if (prevObjectID != null) setLayer(prevObjectID,prevLayer,prevVisible,prevDisplay);
	prevLayer = findLayerZ(objName);
	prevVisible = findLayerVis(objName);
	prevDisplay = findLayerDisplay(objName);
 	prevObjectID = objName;
 	setLayer(objName,1000, "visible", "block");
}