var loadEvent = {
	fnList : [],
	timer : null,
	domLoadElementId : "dom-load",
	add : function(fn)
	{
		loadEvent.fnList.push(fn)
		if(loadEvent.domLoaded == undefined)
		{
			loadEvent.domLoaded=false;
			loadEvent.domLoad();
			window.onload = function()
			{
				if(document.getElementById(loadEvent.domLoadElementId) == undefined)
				{
					window.defaultStatus = "Error: domLoadElementId[\""+loadEvent.domLoadElementId+"\"] is not embeded.";
				}
			}
		}
	},
	domLoad : function()
	{
		loadEvent.timer = setInterval(function() { // doesnt work in IE/Mac
		if((document.getElementsByTagName("body")[0] != null || document.body != null) && document.getElementById(loadEvent.domLoadElementId)) {
			loadEvent.runFnList();
			clearInterval(loadEvent.timer);
		}
		}, 250);
		if (typeof document.addEventListener != "undefined") {
			document.addEventListener("DOMContentLoaded", function() { loadEvent.runFnList(); clearInterval(loadEvent.timer); } , null); // Mozilla only
		}
	},
	runFnList : function()
	{
		if(loadEvent.domLoaded) return // for Mozilla, only execute once
		loadEvent.domLoaded = true; 
		for(var i=0,fn;fn=loadEvent.fnList[i];i++)
		{
			fn();
		}
	}
}

// ===============================================================


uniqueId = 0;
function giveUniqueID()
{
	return "BRUniq"+ ++uniqueId
}


function getElementsByClassName(className,nodeElm,elmType)
{
	var elementList = [];
	var elementsByClassName = [];
	if(elmType) elementList = nodeElm.getElementsByTagName(elmType);
	else elementList = document.all || document.getElementsByTagName("*");
	for(var i=0,elm;elm=elementList[i];i++)
	{
		if(hasClassName(elm,className))
		{
			elementsByClassName.push(elm);
		}
	}
	return elementsByClassName;
}


function hasClassName(elm,className)
{
	var re = RegExp("(^|\\s)"+className+"(\\s|$)");
	return re.test(elm.className);
}

function getNextSibling(elm){
	nextElm=elm.nextSibling;
	while(nextElm.nodeType!=1){
		nextElm = nextElm.nextSibling;
	}
	return nextElm;
}

function getPreviousSibling(elm){
	previousElm=elm.previousSibling;
	while(previousElm.nodeType!=1){
		previousElm = previousElm.nextSibling;
	}
	return previousElm;
}

var y1 = 130;   // change the # on the left to adjuct the Y co-ordinate
(document.getElementById) ? dom = true : dom = false;

function doIt() {
	if (!getCookie("survey")){placeIt(); showIt();} }	

function hideIt() {
  if (dom) {document.getElementById("layer1").style.visibility='hidden';}
  if (document.layers) {document.layers["layer1"].visibility='hide';} }

function showIt() {
  if (dom) {document.getElementById("layer1").style.visibility='visible';}
  if (document.layers) {document.layers["layer1"].visibility='show';} }

function placeIt() {
  if (dom && !document.all) {document.getElementById("layer1").style.top = window.pageYOffset + (window.innerHeight - (window.innerHeight-y1))}
  if (document.layers) {document.layers["layer1"].top = window.pageYOffset + (window.innerHeight - (window.innerHeight-y1))}
  if (document.all) {document.all["layer1"].style.top = document.body.scrollTop + (document.body.clientHeight - (document.body.clientHeight-y1));}
  window.setTimeout("placeIt()", 10); }

function getCookie(cookieName) {
	var start = document.cookie.indexOf( cookieName + "=" );
	var len = start + cookieName.length + 1;
	if ( ( !start ) && ( cookieName != document.cookie.substring( 0, cookieName.length ) ) ) return null;
	if ( start == -1 ) return null;
	var end = document.cookie.indexOf( ";", len );
	if ( end == -1 ) end = document.cookie.length;
	return unescape( document.cookie.substring( len, end ) );
}

function setCookie(cookieName,cookieValue,nDays) {
	var today = new Date();
	var expire = new Date();
	if (nDays==null || nDays==0) nDays=1;
	expire.setTime(today.getTime() + 3600000*24*nDays);
	document.cookie = cookieName+"="+escape(cookieValue)+ ";expires="+expire.toGMTString();
}