/*************************************************************************
  This code is from Dynamic Web Coding at http://www.dyn-web.com/
  Copyright 2001-3 by Sharon Paine 
  See Terms of Use at http://www.dyn-web.com/bus/terms.html
  regarding conditions under which you may use this code.
  This notice must be retained in the code as is!
*************************************************************************/

// onresize for ns4
var origWidth, origHeight;
if (document.layers) {
	origWidth = window.innerWidth; origHeight = window.innerHeight;
	window.onresize = function() { if (window.innerWidth != origWidth || window.innerHeight != origHeight) history.go(0); }
}

var cur_lyr;	// holds id of currently visible layer
function swapLayers(id) {
  if (cur_lyr) hideLayer(cur_lyr);
  showLayer(id);
  cur_lyr = id;
}

function showLayer(id) {
  var lyr = getElemRefs(id);
  if (lyr && lyr.css) lyr.css.visibility = "visible";
}

function hideLayer(id) {
  var lyr = getElemRefs(id);
  if (lyr && lyr.css) lyr.css.visibility = "hidden";
}

function getElemRefs(id) {
	var el = (document.getElementById)? document.getElementById(id): (document.all)? document.all[id]: (document.layers)? document.layers[id]: null;
	if (el) el.css = (el.style)? el.style: el;
	return el;
}

function setLyr(obj,lyr1,lyr2)
{
	var newX = findPosX(obj);
	
	var x1 = new getObj(lyr1);
	var x2 = new getObj(lyr2);
	
	browserName = navigator.appName;
	browserVer = parseInt(navigator.appVersion);
	if (browserName == "Microsoft Internet Explorer") {
		x1.style.left = newX + 'px';
		x2.style.left = newX + 'px';
	} else {
		x1.style.left = newX + 3 + 'px';
		x2.style.left = newX + 3 + 'px';
	}
}

function findPosX(obj)
{
	var curleft = 0;
	if (obj.offsetParent)
	{
		while (obj.offsetParent)
		{
			curleft += obj.offsetLeft
			obj = obj.offsetParent;
		}
	}
	else if (obj.x)
		curleft += obj.x;
	return curleft;
}

function getObj(name)
{
 if (document.getElementById)
 {
	   this.obj = document.getElementById(name);
	   this.style = document.getElementById(name).style;
 }
 else if (document.all)
 {
	   this.obj = document.all[name];
	   this.style = document.all[name].style;
 }
 else if (document.layers)
 {
	   if (document.layers[name])
	   {
	   	this.obj = document.layers[name];
	   	this.style = document.layers[name];
	   }
	   else
	   {
	    this.obj = document.layers.testP.layers[name];
	    this.style = document.layers.testP.layers[name];
	   }
 }
}