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

    };



    // if setDefaultURL has been called, our first clue

    // that the SWF is ready and listening

    //var swfReady = false;



    // the URL we'll send to the SWF once it is ready

    //var pendingURL = '';



    // Default app state URL to use when no fragment ID present

    var defaultHash = '';



    // Last-known app state URL

    var currentHref = document.location.href;



    // Initial URL (used only by IE)

    var initialHref = document.location.href;



    // Initial URL (used only by IE)

    var initialHash = document.location.hash;



    // History frame source URL prefix (used only by IE)

    var historyFrameSourcePrefix = 'history/historyFrame.html?';



    // History maintenance (used only by Safari)

    var currentHistoryLength = -1;



    var historyHash = [];



    var initialState = createState(initialHref, initialHref + '#' + initialHash, initialHash);



    var backStack = [];

    var forwardStack = [];



    var currentObjectId = null;



    //UserAgent detection

    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;

    }



    // Accessor functions for obtaining specific elements of the page.

    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");

    }



    /* Get the Flash player object for performing ExternalInterface callbacks. */

    function getPlayer(objectId) {

        var objectId = objectId || null;

        var player = null; /* AJH, needed?  = document.getElementById(getPlayerId()); */

        if (browser.ie && objectId != null) {

            player = document.getElementById(objectId);

        }

        if (player == null) {

            player = document.getElementsByTagName('object')[0];

        }

        

        if (player == null || player.object == null) {

            player = document.getElementsByTagName('embed')[0];

        }



        return player;

    }

    

    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;

	}



    /* Get the current location hash excluding the '#' symbol. */

    function getHash() {

       // It would be nice if we could use document.location.hash here,

       // but it's faulty sometimes.

       var idx = document.location.href.indexOf('#');

       return (idx >= 0) ? document.location.href.substr(idx+1) : '';

    }



    /* Get the current location hash excluding the '#' symbol. */

    function setHash(hash) {

       // It would be nice if we could use document.location.hash here,

       // but it's faulty sometimes.

       if (hash == '') hash = '#'

       document.location.hash = hash;

    }



    function createState(baseUrl, newUrl, flexAppUrl) {

        return { 'baseUrl': baseUrl, 'newUrl': newUrl, 'flexAppUrl': flexAppUrl, 'title': null };

    }



    /* Add a history entry to the browser.

     *   baseUrl: the portion of the location prior to the '#'

     *   newUrl: the entire new URL, including '#' and following fragment

     *   flexAppUrl: the portion of the location following the '#' only

     */

    function addHistoryEntry(baseUrl, newUrl, flexAppUrl) {



        //delete all the history entries

        forwardStack = [];



        if (browser.ie) {

            //Check to see if we are being asked to do a navigate for the first

            //history entry, and if so ignore, because it's coming from the creation

            //of the history iframe

            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 {

                // for IE, tell the history frame to go somewhere without a '#'

                // in order to get this entry into the browser history.

                getHistoryFrame().src = historyFrameSourcePrefix + flexAppUrl;

            }

            setHash(flexAppUrl);

        } else {



            //ADR

            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) {

                // for Safari, submit a form whose action points to the desired URL

                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>';

                    //get the current elements and add them to the 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;

                }

                // We also have to maintain the history by hand for Safari

                historyHash[history.length] = flexAppUrl;

                _storeStates();

            } else {

                // Otherwise, write an anchor into the page and tell the browser to go there

                addAnchor(flexAppUrl);

                setHash(flexAppUrl);

            }

        }

        backStack.push(createState(baseUrl, newUrl, flexAppUrl));

    }



    function _storeStates() {

        if (browser.safari) {

            getRememberElement().value = historyHash.join(",");

        }

    }



    function handleBackButton() {

        //The "current" page is always at the top of the history stack.

        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() {

        //summary: private method. Do not call this directly.



        var last = forwardStack.pop();

        if (!last) { return; }

        backStack.push(last);

    }



    function handleArbitraryUrl() {

        //delete all the history entries

        forwardStack = [];

    }



    /* Called periodically to poll to see if we need to detect navigation that has occurred */

    function checkForUrlChange() {



        if (browser.ie) {

            if (currentHref != document.location.href && currentHref + '#' != document.location.href) {

                //This occurs when the user has navigated to a specific URL

                //within the app, and didn't use browser back/forward

                //IE seems to have a bug where it stops updating the URL it

                //shows the end-user at this point, but programatically it

                //appears to be correct.  Do a full app reload to get around

                //this issue.

                if (browser.version < 7) {

                    currentHref = document.location.href;

                    document.location.reload();

                } else {

					if (getHash() != getIframeHash()) {

						// this.iframe.src = this.blankURL + hash;

						var sourceToSet = historyFrameSourcePrefix + getHash();

						getHistoryFrame().src = sourceToSet;

					}

                }

            }

        }



        if (browser.safari) {

            // For Safari, we have to check to see if history.length changed.

            if (currentHistoryLength >= 0 && history.length != currentHistoryLength) {

                //alert("did change: " + history.length + ", " + historyHash.length + "|" + historyHash[history.length] + "|>" + historyHash.join("|"));

                // If it did change, then we have to look the old state up

                // in our hand-maintained array since document.location.hash

                // won't have changed, then call back into BrowserManager.

                currentHistoryLength = history.length;

                var flexAppUrl = historyHash[currentHistoryLength];

                if (flexAppUrl == '') {

                    //flexAppUrl = defaultHash;

                }

                //ADR: to fix multiple

                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;

                    // FIXME: could this ever be a forward button?

                    // we can't clear it because we still need to check for forwards. Ugg.

                    // clearInterval(this.locationTimer);

                    handleBackButton();

                }

                

                // first check to see if we could have gone forward. We always halt on

                // a no-hash item.

                if (forwardStack.length > 0) {

                    if (forwardStack[forwardStack.length-1].flexAppUrl == getHash()) {

                        urlActions.forward = true;

                        handleForwardButton();

                    }

                }



                // ok, that didn't work, try someplace back in the history stack

                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();

                }



                // Firefox changed; do a callback into BrowserManager to tell it.

                currentHref = document.location.href;

                var flexAppUrl = getHash();

                if (flexAppUrl == '') {

                    //flexAppUrl = defaultHash;

                }

                //ADR: to fix multiple

                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);

                }

            }

        }

        //setTimeout(checkForUrlChange, 50);

    }



    /* Write an anchor into the page to legitimize it as a URL for Firefox et al. */

    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';

            //iframe.src = historyFrameSourcePrefix;

            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);

        }

        

        //setTimeout(checkForUrlChange, 50);

    }



    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 on safari, set the title to be the empty string. 

            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();

            //trailing ? is important else an extra frame gets added to the history

            //when navigating back to the first page.  Alternatively could check

            //in history frame navigation to compare # and ?.

            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 {

                    //alert(historyHash[historyHash.length-1]);

                }

                //setHash(def);

                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);

                //setHash(def);

            }



        }, 



        /* Set the current browser URL; called from inside BrowserManager to propagate

         * the application state out to the container.

         */

        setBrowserURL: function(flexAppUrl, objectId) {

            if (browser.ie && typeof objectId != "undefined") {

                currentObjectId = objectId;

            }

           //fromIframe = fromIframe || false;

           //fromFlex = fromFlex || false;

           //alert("setBrowserURL: " + flexAppUrl);

           //flexAppUrl = (flexAppUrl == "") ? defaultHash : flexAppUrl ;



           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;

        }



    }



})();



// Initialization



// Automated unit testing and other diagnostics



function setURL(url)

{

    document.location.href = url;

}



function backButton()

{

    history.back();

}



function forwardButton()

{

    history.forward();

}



function goForwardOrBackInHistory(step)

{

    history.go(step);

}



//BrowserHistoryUtils.addEvent(window, "load", function() { BrowserHistory.initialize(); });

(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();} );