BrowserHistoryUtils = {
addEvent: function(elm, evType, fn, useCapture) {
useCapture = useCapture || false;
if (elm.addEventListener) {
elm.addEventListener(evType, fn, useCapture);
return true;
}
else if (elm.attachEvent) {
var r = elm.attachEvent('on' + evType, fn);
return r;
}
else {
elm['on' + evType] = fn;
}
}
}

BrowserHistory = (function() {
// type of browser
var browser = {
ie: false, 
firefox: false, 
safari: false, 
opera: false, 
version: -1
};
var defaultHash = '';
var currentHref = document.location.href;
var initialHref = document.location.href;
var initialHash = document.location.hash;
var historyFrameSourcePrefix = 'history/historyFrame.html?';
var currentHistoryLength = -1;
var historyHash = [];
var initialState = createState(initialHref, initialHref + '#' + initialHash, initialHash);
var backStack = [];
var forwardStack = [];
var currentObjectId = null;
var useragent = navigator.userAgent.toLowerCase();
if (useragent.indexOf("opera") != -1) {
browser.opera = true;
} else if (useragent.indexOf("msie") != -1) {
browser.ie = true;
browser.version = parseFloat(useragent.substring(useragent.indexOf('msie') + 4));
} else if (useragent.indexOf("safari") != -1) {
browser.safari = true;
browser.version = parseFloat(useragent.substring(useragent.indexOf('safari') + 7));
} else if (useragent.indexOf("gecko") != -1) {
browser.firefox = true;
}

if (browser.ie == true && browser.version == 7) {
window["_ie_firstload"] = false;
}
function getHistoryFrame()
{
return document.getElementById('ie_historyFrame');
}

function getAnchorElement()
{
return document.getElementById('firefox_anchorDiv');
}

function getFormElement()
{
return document.getElementById('safari_formDiv');
}

function getRememberElement()
{
return document.getElementById("safari_remember_field");
}
function getPlayer(id) {
		if (id && document.getElementById(id)) {
			var r = document.getElementById(id);
			if (typeof r.SetVariable != "undefined") {
				return r;
			}
			else {
				var o = r.getElementsByTagName("object");
				var e = r.getElementsByTagName("embed");
				if (o.length > 0 && typeof o[0].SetVariable != "undefined") {
					return o[0];
				}
				else if (e.length > 0 && typeof e[0].SetVariable != "undefined") {
					return e[0];
				}
			}
		}
		else {
			var o = document.getElementsByTagName("object");
			var e = document.getElementsByTagName("embed");
			if (e.length > 0 && typeof e[0].SetVariable != "undefined") {
				return e[0];
			}
			else if (o.length > 0 && typeof o[0].SetVariable != "undefined") {
				return o[0];
			}
			else if (o.length > 1 && typeof o[1].SetVariable != "undefined") {
				return o[1];
			}
		}
		return undefined;
	}

function getPlayers() {
var players = [];
if (players.length == 0) {
var tmp = document.getElementsByTagName('object');
players = tmp;
}

if (players.length == 0 || players[0].object == null) {
var tmp = document.getElementsByTagName('embed');
players = tmp;
}
return players;
}

	function getIframeHash() {
		var doc = getHistoryFrame().contentWindow.document;
		var hash = String(doc.location.search);
		if (hash.length == 1 && hash.charAt(0) == "?") {
			hash = "";
		}
		else if (hash.length >= 2 && hash.charAt(0) == "?") {
			hash = hash.substring(1);
		}
		return hash;
	}
function getHash() {
var idx = document.location.href.indexOf('#');
return (idx >= 0) ? document.location.href.substr(idx+1) : '';
}
function setHash(hash) {
if (hash == '') hash = '#'
document.location.hash = hash;
}
function createState(baseUrl, newUrl, flexAppUrl) {
return { 'baseUrl': baseUrl, 'newUrl': newUrl, 'flexAppUrl': flexAppUrl, 'title': null };
}
function addHistoryEntry(baseUrl, newUrl, flexAppUrl) {
forwardStack = [];
if (browser.ie) {
if (flexAppUrl == defaultHash && document.location.href == initialHref && window['_ie_firstload']) {
currentHref = initialHref;
return;
}
if ((!flexAppUrl || flexAppUrl == defaultHash) && window['_ie_firstload']) {
newUrl = baseUrl + '#' + defaultHash;
flexAppUrl = defaultHash;
} else {
getHistoryFrame().src = historyFrameSourcePrefix + flexAppUrl;
}
setHash(flexAppUrl);
} else {
if (backStack.length == 0 && initialState.flexAppUrl == flexAppUrl) {
initialState = createState(baseUrl, newUrl, flexAppUrl);
} else if(backStack.length > 0 && backStack[backStack.length - 1].flexAppUrl == flexAppUrl) {
backStack[backStack.length - 1] = createState(baseUrl, newUrl, flexAppUrl);
}
if (browser.safari) {
if (browser.version <= 419.3) {
var file = window.location.pathname.toString();
file = file.substring(file.lastIndexOf("/")+1);
 getFormElement().innerHTML = '<form name="historyForm" action="'+file+'#' + flexAppUrl + '" method="GET"></form>';
var qs = window.location.search.substring(1);
var qs_arr = qs.split("&");
for (var i = 0; i < qs_arr.length; i++) {
var tmp = qs_arr[i].split("=");
var elem = document.createElement("input");
elem.type = "hidden";
elem.name = tmp[0];
elem.value = tmp[1];
document.forms.historyForm.appendChild(elem);
}
document.forms.historyForm.submit();
} else {
top.location.hash = flexAppUrl;
}
historyHash[history.length] = flexAppUrl;
_storeStates();
} else {
addAnchor(flexAppUrl);
setHash(flexAppUrl);
}
}
backStack.push(createState(baseUrl, newUrl, flexAppUrl));
}
function _storeStates() {
if (browser.safari) {
getRememberElement().value = historyHash.join(",");
}
}
function handleBackButton() {
var current = backStack.pop();
if (!current) { return; }
var last = backStack[backStack.length - 1];
if (!last && backStack.length == 0){
last = initialState;
}
forwardStack.push(current);
}

function handleForwardButton() {
var last = forwardStack.pop();
if (!last) { return; }
backStack.push(last);
}
function handleArbitraryUrl() {
forwardStack = [];
}
function checkForUrlChange() {

if (browser.ie) {
if (currentHref != document.location.href && currentHref + '#' != document.location.href) {
if (browser.version < 7) {
currentHref = document.location.href;
document.location.reload();
} else {
					if (getHash() != getIframeHash()) {
						var sourceToSet = historyFrameSourcePrefix + getHash();
						getHistoryFrame().src = sourceToSet;
					}
}
}
}

if (browser.safari) {
if (currentHistoryLength >= 0 && history.length != currentHistoryLength) {
currentHistoryLength = history.length;
var flexAppUrl = historyHash[currentHistoryLength];
if (flexAppUrl == '') {
}
if (typeof BrowserHistory_multiple != "undefined" && BrowserHistory_multiple == true) {
var pl = getPlayers();
for (var i = 0; i < pl.length; i++) {
pl[i].browserURLChange(flexAppUrl);
}
} else {
getPlayer().browserURLChange(flexAppUrl);
}
_storeStates();
}
}
if (browser.firefox) {
if (currentHref != document.location.href) {
var bsl = backStack.length;
var urlActions = {
back: false, 
forward: false, 
set: false
}
if ((window.location.hash == initialHash || window.location.href == initialHref) && (bsl == 1)) {
urlActions.back = true;
handleBackButton();
}
if (forwardStack.length > 0) {
if (forwardStack[forwardStack.length-1].flexAppUrl == getHash()) {
urlActions.forward = true;
handleForwardButton();
}
}
if ((bsl >= 2) && (backStack[bsl - 2])) {
if (backStack[bsl - 2].flexAppUrl == getHash()) {
urlActions.back = true;
handleBackButton();
}
}
if (!urlActions.back && !urlActions.forward) {
var foundInStacks = {
back: -1, 
forward: -1
}
for (var i = 0; i < backStack.length; i++) {
if (backStack[i].flexAppUrl == getHash() && i != (bsl - 2)) {
arbitraryUrl = true;
foundInStacks.back = i;
}
}
for (var i = 0; i < forwardStack.length; i++) {
if (forwardStack[i].flexAppUrl == getHash() && i != (bsl - 2)) {
arbitraryUrl = true;
foundInStacks.forward = i;
}
}
handleArbitraryUrl();
}
currentHref = document.location.href;
var flexAppUrl = getHash();
if (flexAppUrl == '') {
//flexAppUrl = defaultHash;
}
if (typeof BrowserHistory_multiple != "undefined" && BrowserHistory_multiple == true) {
var pl = getPlayers();
for (var i = 0; i < pl.length; i++) {
pl[i].browserURLChange(flexAppUrl);
}
} else {
getPlayer().browserURLChange(flexAppUrl);
}
}
}
}
function addAnchor(flexAppUrl)
{
if (document.getElementsByName(flexAppUrl).length == 0) {
getAnchorElement().innerHTML += "<a name='" + flexAppUrl + "'>" + flexAppUrl + "</a>";
}
}
var _initialize = function () {
if (browser.ie)
{
var scripts = document.getElementsByTagName('script');
for (var i = 0, s; s = scripts[i]; i++) {
if (s.src.indexOf("history.js") > -1) {
var iframe_location = (new String(s.src)).replace("history.js", "historyFrame.html");
}
}
historyFrameSourcePrefix = iframe_location + "?";
var src = historyFrameSourcePrefix;
var iframe = document.createElement("iframe");
iframe.id = 'ie_historyFrame';
iframe.name = 'ie_historyFrame';
try {
document.body.appendChild(iframe);
} catch(e) {
setTimeout(function() {
document.body.appendChild(iframe);
}, 0);
}
}
if (browser.safari)
{
var rememberDiv = document.createElement("div");
rememberDiv.id = 'safari_rememberDiv';
document.body.appendChild(rememberDiv);
rememberDiv.innerHTML = '<input type="text" id="safari_remember_field" style="width: 500px;">';
var formDiv = document.createElement("div");
formDiv.id = 'safari_formDiv';
document.body.appendChild(formDiv);
var reloader_content = document.createElement('div');
reloader_content.id = 'safarireloader';
var scripts = document.getElementsByTagName('script');
for (var i = 0, s; s = scripts[i]; i++) {
if (s.src.indexOf("history.js") > -1) {
html = (new String(s.src)).replace(".js", ".html");
}
}
reloader_content.innerHTML = '<iframe id="safarireloader-iframe" src="about:blank" frameborder="no" scrolling="no"></iframe>';
document.body.appendChild(reloader_content);
reloader_content.style.position = 'absolute';
reloader_content.style.left = reloader_content.style.top = '-9999px';
iframe = reloader_content.getElementsByTagName('iframe')[0];
if (document.getElementById("safari_remember_field").value != "" ) {
historyHash = document.getElementById("safari_remember_field").value.split(",");
}
}
if (browser.firefox)
{
var anchorDiv = document.createElement("div");
anchorDiv.id = 'firefox_anchorDiv';
document.body.appendChild(anchorDiv);
}
}
return {
historyHash: historyHash, 
backStack: function() { return backStack; }, 
forwardStack: function() { return forwardStack }, 
getPlayer: getPlayer, 
initialize: function(src) {
_initialize(src);
}, 
setURL: function(url) {
document.location.href = url;
}, 
getURL: function() {
return document.location.href;
}, 
getTitle: function() {
return document.title;
}, 
setTitle: function(title) {
try {
backStack[backStack.length - 1].title = title;
} catch(e) { }
if (browser.safari) {
if (title == "") {
try {
var tmp = window.location.href.toString();
title = tmp.substring((tmp.lastIndexOf("/")+1), tmp.lastIndexOf("#"));
} catch(e) {
title = "";
}
}
}
document.title = title;
}, 
setDefaultURL: function(def)
{
defaultHash = def;
def = getHash();
if (browser.ie)
{
window['_ie_firstload'] = true;
var sourceToSet = historyFrameSourcePrefix + def;
var func = function() {
getHistoryFrame().src = sourceToSet;
window.location.replace("#" + def);
setInterval(checkForUrlChange, 50);
}
try {
func();
} catch(e) {
window.setTimeout(function() { func(); }, 0);
}
}
if (browser.safari)
{
currentHistoryLength = history.length;
if (historyHash.length == 0) {
historyHash[currentHistoryLength] = def;
var newloc = "#" + def;
window.location.replace(newloc);
} else {
}
setInterval(checkForUrlChange, 50);
}
if (browser.firefox || browser.opera)
{
var reg = new RegExp("#" + def + "$");
if (window.location.toString().match(reg)) {
} else {
var newloc ="#" + def;
window.location.replace(newloc);
}
setInterval(checkForUrlChange, 50);
}
}, 
setBrowserURL: function(flexAppUrl, objectId) {
if (browser.ie && typeof objectId != "undefined") {
currentObjectId = objectId;
}
var pos = document.location.href.indexOf('#');
var baseUrl = pos != -1 ? document.location.href.substr(0, pos) : document.location.href;
var newUrl = baseUrl + '#' + flexAppUrl;
if (document.location.href != newUrl && document.location.href + '#' != newUrl) {
currentHref = newUrl;
addHistoryEntry(baseUrl, newUrl, flexAppUrl);
currentHistoryLength = history.length;
}
return false;
}, 
browserURLChange: function(flexAppUrl) {
var objectId = null;
if (browser.ie && currentObjectId != null) {
objectId = currentObjectId;
}
pendingURL = '';
if (typeof BrowserHistory_multiple != "undefined" && BrowserHistory_multiple == true) {
var pl = getPlayers();
for (var i = 0; i < pl.length; i++) {
try {
pl[i].browserURLChange(flexAppUrl);
} catch(e) { }
}
} else {
try {
getPlayer(objectId).browserURLChange(flexAppUrl);
} catch(e) { }
}
currentObjectId = null;
}
}
})();
function setURL(url)
{
document.location.href = url;
}
function backButton()
{
history.back();
}
function forwardButton()
{
history.forward();
}
function goForwardOrBackInHistory(step)
{
history.go(step);
}
(function(i) {
var u =navigator.userAgent;var e=/*@cc_on!@*/false; 
var st = setTimeout;
if(/webkit/i.test(u)){
st(function(){
var dr=document.readyState;
if(dr=="loaded"||dr=="complete"){i()}
else{st(arguments.callee,10);}},10);
} else if((/mozilla/i.test(u)&&!/(compati)/.test(u)) || (/opera/i.test(u))){
document.addEventListener("DOMContentLoaded",i,false);
} else if(e){
(function(){
var t=document.createElement('doc:rdy');
try{t.doScroll('left');
i();t=null;
}catch(e){st(arguments.callee,0);}})();
} else{
window.onload=i;
}
})( function() {BrowserHistory.initialize();} );