// Name:        MicrosoftAjaxWebForms.debug.js
// Assembly:    System.Web.Extensions
// Version:     3.6.0.0
// FileVersion: 3.6.20830.0
//!-----------------------------------------------------------------------
//! Copyright (C) Microsoft Corporation. All rights reserved.
//!-----------------------------------------------------------------------
//! MicrosoftAjaxWebForms.js
//! Microsoft AJAX ASP.NET WebForms Framework.

// Partial Rendering

Type.registerNamespace('Sys.WebForms');


Sys.WebForms.BeginRequestEventArgs = function Sys$WebForms$BeginRequestEventArgs(request, postBackElement) {
    /// <summary locid="M:J#Sys.WebForms.BeginRequestEventArgs.#ctor" />
    /// <param name="request" type="Sys.Net.WebRequest"></param>
    /// <param name="postBackElement" domElement="true" mayBeNull="true"></param>
    var e = Function._validateParams(arguments, [
        {name: "request", type: Sys.Net.WebRequest},
        {name: "postBackElement", mayBeNull: true, domElement: true}
    ]);
    if (e) throw e;

    Sys.WebForms.BeginRequestEventArgs.initializeBase(this);
    this._request = request;
    this._postBackElement = postBackElement;
}


    function Sys$WebForms$BeginRequestEventArgs$get_postBackElement() {
        /// <value domElement="true" mayBeNull="true" locid="P:J#Sys.WebForms.BeginRequestEventArgs.postBackElement"></value>
        if (arguments.length !== 0) throw Error.parameterCount();
        return this._postBackElement;
    }

    function Sys$WebForms$BeginRequestEventArgs$get_request() {
        /// <value type="Sys.Net.WebRequest" locid="P:J#Sys.WebForms.BeginRequestEventArgs.request"></value>
        if (arguments.length !== 0) throw Error.parameterCount();
        return this._request;
    }
Sys.WebForms.BeginRequestEventArgs.prototype = {
    get_postBackElement: Sys$WebForms$BeginRequestEventArgs$get_postBackElement,
    get_request: Sys$WebForms$BeginRequestEventArgs$get_request
}

Sys.WebForms.BeginRequestEventArgs.registerClass('Sys.WebForms.BeginRequestEventArgs', Sys.EventArgs);
 
Sys.WebForms.EndRequestEventArgs = function Sys$WebForms$EndRequestEventArgs(error, dataItems, response) {
    /// <summary locid="M:J#Sys.WebForms.EndRequestEventArgs.#ctor" />
    /// <param name="error" type="Error" mayBeNull="true"></param>
    /// <param name="dataItems" type="Object" mayBeNull="true"></param>
    /// <param name="response" type="Sys.Net.WebRequestExecutor"></param>
    var e = Function._validateParams(arguments, [
        {name: "error", type: Error, mayBeNull: true},
        {name: "dataItems", type: Object, mayBeNull: true},
        {name: "response", type: Sys.Net.WebRequestExecutor}
    ]);
    if (e) throw e;

    Sys.WebForms.EndRequestEventArgs.initializeBase(this);
    this._errorHandled = false;
    this._error = error;
    // Need to use "new Object()" instead of "{}", since the latter breaks code coverage.
    this._dataItems = dataItems || new Object();
    this._response = response;
}


    function Sys$WebForms$EndRequestEventArgs$get_dataItems() {
        /// <value type="Object" locid="P:J#Sys.WebForms.EndRequestEventArgs.dataItems"></value>
        if (arguments.length !== 0) throw Error.parameterCount();
        return this._dataItems;
    }

    function Sys$WebForms$EndRequestEventArgs$get_error() {
        /// <value type="Error" locid="P:J#Sys.WebForms.EndRequestEventArgs.error"></value>
        if (arguments.length !== 0) throw Error.parameterCount();
        return this._error;
    }

    function Sys$WebForms$EndRequestEventArgs$get_errorHandled() {
        /// <value type="Boolean" locid="P:J#Sys.WebForms.EndRequestEventArgs.errorHandled"></value>
        if (arguments.length !== 0) throw Error.parameterCount();
        return this._errorHandled;
    }
    function Sys$WebForms$EndRequestEventArgs$set_errorHandled(value) {
        var e = Function._validateParams(arguments, [{name: "value", type: Boolean}]);
        if (e) throw e;
        this._errorHandled = value;
    }

    function Sys$WebForms$EndRequestEventArgs$get_response() {
        /// <value type="Sys.Net.WebRequestExecutor" locid="P:J#Sys.WebForms.EndRequestEventArgs.response"></value>
        if (arguments.length !== 0) throw Error.parameterCount();
        return this._response;
    }
Sys.WebForms.EndRequestEventArgs.prototype = {
    get_dataItems: Sys$WebForms$EndRequestEventArgs$get_dataItems,
    get_error: Sys$WebForms$EndRequestEventArgs$get_error,
    get_errorHandled: Sys$WebForms$EndRequestEventArgs$get_errorHandled,
    set_errorHandled: Sys$WebForms$EndRequestEventArgs$set_errorHandled,
    get_response: Sys$WebForms$EndRequestEventArgs$get_response
}

Sys.WebForms.EndRequestEventArgs.registerClass('Sys.WebForms.EndRequestEventArgs', Sys.EventArgs);

Sys.WebForms.InitializeRequestEventArgs = function Sys$WebForms$InitializeRequestEventArgs(request, postBackElement) {
    /// <summary locid="M:J#Sys.WebForms.InitializeRequestEventArgs.#ctor" />
    /// <param name="request" type="Sys.Net.WebRequest"></param>
    /// <param name="postBackElement" domElement="true" mayBeNull="true"></param>
    var e = Function._validateParams(arguments, [
        {name: "request", type: Sys.Net.WebRequest},
        {name: "postBackElement", mayBeNull: true, domElement: true}
    ]);
    if (e) throw e;

    Sys.WebForms.InitializeRequestEventArgs.initializeBase(this);
    this._request = request;
    this._postBackElement = postBackElement;
}


    function Sys$WebForms$InitializeRequestEventArgs$get_postBackElement() {
        /// <value domElement="true" mayBeNull="true" locid="P:J#Sys.WebForms.InitializeRequestEventArgs.postBackElement"></value>
        if (arguments.length !== 0) throw Error.parameterCount();
        return this._postBackElement;
    }

    function Sys$WebForms$InitializeRequestEventArgs$get_request() {
        /// <value type="Sys.Net.WebRequest" locid="P:J#Sys.WebForms.InitializeRequestEventArgs.request"></value>
        if (arguments.length !== 0) throw Error.parameterCount();
        return this._request;
    }
Sys.WebForms.InitializeRequestEventArgs.prototype = {
    get_postBackElement: Sys$WebForms$InitializeRequestEventArgs$get_postBackElement,
    get_request: Sys$WebForms$InitializeRequestEventArgs$get_request
}

Sys.WebForms.InitializeRequestEventArgs.registerClass('Sys.WebForms.InitializeRequestEventArgs', Sys.CancelEventArgs);
 
Sys.WebForms.PageLoadedEventArgs = function Sys$WebForms$PageLoadedEventArgs(panelsUpdated, panelsCreated, dataItems) {
    /// <summary locid="M:J#Sys.WebForms.PageLoadedEventArgs.#ctor" />
    /// <param name="panelsUpdated" type="Array"></param>
    /// <param name="panelsCreated" type="Array"></param>
    /// <param name="dataItems" type="Object" mayBeNull="true"></param>
    var e = Function._validateParams(arguments, [
        {name: "panelsUpdated", type: Array},
        {name: "panelsCreated", type: Array},
        {name: "dataItems", type: Object, mayBeNull: true}
    ]);
    if (e) throw e;
    Sys.WebForms.PageLoadedEventArgs.initializeBase(this);

    this._panelsUpdated = panelsUpdated;
    this._panelsCreated = panelsCreated;
    // Need to use "new Object()" instead of "{}", since the latter breaks code coverage.
    this._dataItems = dataItems || new Object();
}


    function Sys$WebForms$PageLoadedEventArgs$get_dataItems() {
        /// <value type="Object" locid="P:J#Sys.WebForms.PageLoadedEventArgs.dataItems"></value>
        if (arguments.length !== 0) throw Error.parameterCount();
        return this._dataItems;
    }

    function Sys$WebForms$PageLoadedEventArgs$get_panelsCreated() {
        /// <value type="Array" locid="P:J#Sys.WebForms.PageLoadedEventArgs.panelsCreated"></value>
        if (arguments.length !== 0) throw Error.parameterCount();
        return this._panelsCreated;
    }

    function Sys$WebForms$PageLoadedEventArgs$get_panelsUpdated() {
        /// <value type="Array" locid="P:J#Sys.WebForms.PageLoadedEventArgs.panelsUpdated"></value>
        if (arguments.length !== 0) throw Error.parameterCount();
        return this._panelsUpdated;
    }
Sys.WebForms.PageLoadedEventArgs.prototype = {
    get_dataItems: Sys$WebForms$PageLoadedEventArgs$get_dataItems,
    get_panelsCreated: Sys$WebForms$PageLoadedEventArgs$get_panelsCreated,
    get_panelsUpdated: Sys$WebForms$PageLoadedEventArgs$get_panelsUpdated
}

Sys.WebForms.PageLoadedEventArgs.registerClass('Sys.WebForms.PageLoadedEventArgs', Sys.EventArgs);

Sys.WebForms.PageLoadingEventArgs = function Sys$WebForms$PageLoadingEventArgs(panelsUpdating, panelsDeleting, dataItems) {
    /// <summary locid="M:J#Sys.WebForms.PageLoadingEventArgs.#ctor" />
    /// <param name="panelsUpdating" type="Array"></param>
    /// <param name="panelsDeleting" type="Array"></param>
    /// <param name="dataItems" type="Object" mayBeNull="true"></param>
    var e = Function._validateParams(arguments, [
        {name: "panelsUpdating", type: Array},
        {name: "panelsDeleting", type: Array},
        {name: "dataItems", type: Object, mayBeNull: true}
    ]);
    if (e) throw e;
    Sys.WebForms.PageLoadingEventArgs.initializeBase(this);

    this._panelsUpdating = panelsUpdating;
    this._panelsDeleting = panelsDeleting;
    // Need to use "new Object()" instead of "{}", since the latter breaks code coverage.
    this._dataItems = dataItems || new Object();
}


    function Sys$WebForms$PageLoadingEventArgs$get_dataItems() {
        /// <value type="Object" locid="P:J#Sys.WebForms.PageLoadingEventArgs.dataItems"></value>
        if (arguments.length !== 0) throw Error.parameterCount();
        return this._dataItems;
    }

    function Sys$WebForms$PageLoadingEventArgs$get_panelsDeleting() {
        /// <value type="Array" locid="P:J#Sys.WebForms.PageLoadingEventArgs.panelsDeleting"></value>
        if (arguments.length !== 0) throw Error.parameterCount();
        return this._panelsDeleting;
    }

    function Sys$WebForms$PageLoadingEventArgs$get_panelsUpdating() {
        /// <value type="Array" locid="P:J#Sys.WebForms.PageLoadingEventArgs.panelsUpdating"></value>
        if (arguments.length !== 0) throw Error.parameterCount();
        return this._panelsUpdating;
    }
Sys.WebForms.PageLoadingEventArgs.prototype = {
    get_dataItems: Sys$WebForms$PageLoadingEventArgs$get_dataItems,
    get_panelsDeleting: Sys$WebForms$PageLoadingEventArgs$get_panelsDeleting,
    get_panelsUpdating: Sys$WebForms$PageLoadingEventArgs$get_panelsUpdating
}

Sys.WebForms.PageLoadingEventArgs.registerClass('Sys.WebForms.PageLoadingEventArgs', Sys.EventArgs);
 
Sys.WebForms.PageRequestManager = function Sys$WebForms$PageRequestManager() {
    this._form = null;
    this._activeDefaultButton = null;
    this._activeDefaultButtonClicked = false;
    this._updatePanelIDs = null;
    this._updatePanelClientIDs = null;
    this._oldUpdatePanelIDs = null;
    this._childUpdatePanelIDs = null;
    this._panelsToRefreshIDs = null;
    this._updatePanelHasChildrenAsTriggers = null;
    this._asyncPostBackControlIDs = null;
    this._asyncPostBackControlClientIDs = null;
    this._postBackControlIDs = null;
    this._postBackControlClientIDs = null;
    this._scriptManagerID = null;
    this._pageLoadedHandler = null;

    this._additionalInput = null;
    this._onsubmit = null;
    this._onSubmitStatements = [];
    this._originalDoPostBack = null;
    this._originalDoPostBackWithOptions = null;
    this._originalFireDefaultButton = null;
    this._originalDoCallback = null;
    this._isCrossPost = false;
    this._postBackSettings = null;
    this._request = null;
    this._onFormSubmitHandler = null;
    this._onFormElementClickHandler = null;
    this._onWindowUnloadHandler = null;
    this._asyncPostBackTimeout = null;

    this._controlIDToFocus = null;
    this._scrollPosition = null;
    this._dataItems = null;
    this._updateContext = null;
    this._processingRequest = false;
    this._scriptDisposes = {};
}



    function Sys$WebForms$PageRequestManager$_get_eventHandlerList() {
        if (!this._events) {
            this._events = new Sys.EventHandlerList();
        }
        return this._events;
    }

    function Sys$WebForms$PageRequestManager$get_isInAsyncPostBack() {
        /// <value type="Boolean" locid="P:J#Sys.WebForms.PageRequestManager.isInAsyncPostBack"></value>
        if (arguments.length !== 0) throw Error.parameterCount();
        return this._request !== null;
    }


    function Sys$WebForms$PageRequestManager$add_beginRequest(handler) {
        /// <summary locid="E:J#Sys.WebForms.PageRequestManager.beginRequest" />
        var e = Function._validateParams(arguments, [{name: "handler", type: Function}]);
        if (e) throw e;
        this._get_eventHandlerList().addHandler("beginRequest", handler);
    }
    function Sys$WebForms$PageRequestManager$remove_beginRequest(handler) {
        var e = Function._validateParams(arguments, [{name: "handler", type: Function}]);
        if (e) throw e;
        this._get_eventHandlerList().removeHandler("beginRequest", handler);
    }

    function Sys$WebForms$PageRequestManager$add_endRequest(handler) {
        /// <summary locid="E:J#Sys.WebForms.PageRequestManager.endRequest" />
        var e = Function._validateParams(arguments, [{name: "handler", type: Function}]);
        if (e) throw e;
        this._get_eventHandlerList().addHandler("endRequest", handler);
    }
    function Sys$WebForms$PageRequestManager$remove_endRequest(handler) {
        var e = Function._validateParams(arguments, [{name: "handler", type: Function}]);
        if (e) throw e;
        this._get_eventHandlerList().removeHandler("endRequest", handler);
    }

    function Sys$WebForms$PageRequestManager$add_initializeRequest(handler) {
        /// <summary locid="E:J#Sys.WebForms.PageRequestManager.initializeRequest" />
        var e = Function._validateParams(arguments, [{name: "handler", type: Function}]);
        if (e) throw e;
        this._get_eventHandlerList().addHandler("initializeRequest", handler);
    }
    function Sys$WebForms$PageRequestManager$remove_initializeRequest(handler) {
        var e = Function._validateParams(arguments, [{name: "handler", type: Function}]);
        if (e) throw e;
        this._get_eventHandlerList().removeHandler("initializeRequest", handler);
    }

    function Sys$WebForms$PageRequestManager$add_pageLoaded(handler) {
        /// <summary locid="E:J#Sys.WebForms.PageRequestManager.pageLoaded" />
        var e = Function._validateParams(arguments, [{name: "handler", type: Function}]);
        if (e) throw e;
        this._get_eventHandlerList().addHandler("pageLoaded", handler);
    }
    function Sys$WebForms$PageRequestManager$remove_pageLoaded(handler) {
        var e = Function._validateParams(arguments, [{name: "handler", type: Function}]);
        if (e) throw e;
        this._get_eventHandlerList().removeHandler("pageLoaded", handler);
    }

    function Sys$WebForms$PageRequestManager$add_pageLoading(handler) {
        /// <summary locid="E:J#Sys.WebForms.PageRequestManager.pageLoading" />
        var e = Function._validateParams(arguments, [{name: "handler", type: Function}]);
        if (e) throw e;
        this._get_eventHandlerList().addHandler("pageLoading", handler);
    }
    function Sys$WebForms$PageRequestManager$remove_pageLoading(handler) {
        var e = Function._validateParams(arguments, [{name: "handler", type: Function}]);
        if (e) throw e;
        this._get_eventHandlerList().removeHandler("pageLoading", handler);
    }

    function Sys$WebForms$PageRequestManager$abortPostBack() {
        if (!this._processingRequest && this._request) {
            this._request.get_executor().abort();
            this._request = null;
        }
    }

    function Sys$WebForms$PageRequestManager$_cancelPendingCallbacks() {
        // DevDiv Bugs 125825: To avoid EVENTVALIDATION corruption we must cancel pending callbacks when an async postback begins
        // to cancel callbacks, we run logic similar to WebForm_CallbackComplete,
        // except we do not run WebForm_ExecuteCallback for them. This code is exactly
        // WebForm_CallbackComplete except without the call to WebForm_ExecuteCallback.
        // We are basically treating each callback as completed, ignoring the response if any.
        for (var i = 0, l = window.__pendingCallbacks.length; i < l; i++) {
            var callback = window.__pendingCallbacks[i];
            if (callback) {
                if (!callback.async) {
                    // we just cancelled the single allowed instance of a synchronous callback
                    window.__synchronousCallBackIndex = -1;
                }
                window.__pendingCallbacks[i] = null;
                var callbackFrameID = "__CALLBACKFRAME" + i;
                var xmlRequestFrame = document.getElementById(callbackFrameID);
                if (xmlRequestFrame) {
                    xmlRequestFrame.parentNode.removeChild(xmlRequestFrame);
                }
            }
        }
    }

    function Sys$WebForms$PageRequestManager$_createPageRequestManagerTimeoutError() {
        // Creates a PageRequestManagerTimeoutException representing a request that timed out.
        var displayMessage = "Sys.WebForms.PageRequestManagerTimeoutException: " + Sys.WebForms.Res.PRM_TimeoutError;
        var e = Error.create(displayMessage, {name: 'Sys.WebForms.PageRequestManagerTimeoutException'});
        e.popStackFrame();
        return e;
    }

    function Sys$WebForms$PageRequestManager$_createPageRequestManagerServerError(httpStatusCode, message) {
        // Creates a PageRequestManagerServerErrorException representing an error that occurred on the server.
        var displayMessage = "Sys.WebForms.PageRequestManagerServerErrorException: " +
            (message || String.format(Sys.WebForms.Res.PRM_ServerError, httpStatusCode));
        var e = Error.create(displayMessage, {
            name: 'Sys.WebForms.PageRequestManagerServerErrorException',
            httpStatusCode: httpStatusCode
        });
        e.popStackFrame();
        return e;
    }

    function Sys$WebForms$PageRequestManager$_createPageRequestManagerParserError(parserErrorMessage) {
        // Creates a PageRequestManagerParserErrorException representing a parser error that occurred while processing a response from the server.
        var displayMessage = "Sys.WebForms.PageRequestManagerParserErrorException: " + String.format(Sys.WebForms.Res.PRM_ParserError, parserErrorMessage);
        var e = Error.create(displayMessage, {name: 'Sys.WebForms.PageRequestManagerParserErrorException'});
        e.popStackFrame();
        return e;
    }

    function Sys$WebForms$PageRequestManager$_createPostBackSettings(async, panelID, sourceElement) {

        return { async:async, panelID:panelID, sourceElement:sourceElement };
    }

    function Sys$WebForms$PageRequestManager$_convertToClientIDs(source, destinationIDs, destinationClientIDs) {
        if (source) {
            for (var i = 0; i < source.length; i++) {
                Array.add(destinationIDs, source[i]);
                Array.add(destinationClientIDs, this._uniqueIDToClientID(source[i]));
            }
        }
    }

    function Sys$WebForms$PageRequestManager$_destroyTree(element) {
        // We only need to walk into children collections if this node is an element
        if (element.nodeType === 1) {
            // We can't just set innerHTML to "" because we have to walk through
            // all children in order to dispose script that may be associated with them.
            var childNodes = element.childNodes;
            for (var i = childNodes.length - 1; i >= 0; i--) {
                var node = childNodes[i];
                if (node.nodeType === 1) {
                    if (node.dispose && typeof(node.dispose) === "function") {
                        node.dispose();
                    }
                    else if (node.control && typeof(node.control.dispose) === "function") {
                        node.control.dispose();
                    }
                    var behaviors = Sys.UI.Behavior.getBehaviors(node);
                    for (var j = behaviors.length - 1; j >= 0; j--) {
                        behaviors[j].dispose();
                    }
                    this._destroyTree(node);
                }
            }
        }
    }

    function Sys$WebForms$PageRequestManager$dispose() {
        if (this._form) {
            Sys.UI.DomEvent.removeHandler(this._form, 'submit', this._onFormSubmitHandler);
            Sys.UI.DomEvent.removeHandler(this._form, 'click', this._onFormElementClickHandler);
            Sys.UI.DomEvent.removeHandler(window, 'unload', this._onWindowUnloadHandler);
            Sys.UI.DomEvent.removeHandler(window, 'load', this._pageLoadedHandler);
        }

        if (this._originalDoPostBack) {
            window.__doPostBack = this._originalDoPostBack;
            this._originalDoPostBack = null;
        }
        if (this._originalDoPostBackWithOptions) {
            window.WebForm_DoPostBackWithOptions = this._originalDoPostBackWithOptions;
            this._originalDoPostBackWithOptions = null;
        }
        if (this._originalFireDefaultButton) {
            window.WebForm_FireDefaultButton = this._originalFireDefaultButton;
            this._originalFireDefaultButton = null;
        }
        if (this._originalDoCallback) {
            window.WebForm_DoCallback = this._originalDoCallback;
            this._originalDoCallback = null;
        }

        this._form = null;
        this._updatePanelIDs = null;
        this._oldUpdatePanelIDs = null;
        this._childUpdatePanelIDs = null;
        this._updatePanelClientIDs = null;
        this._asyncPostBackControlIDs = null;
        this._asyncPostBackControlClientIDs = null;
        this._postBackControlIDs = null;
        this._postBackControlClientIDs = null;
        this._asyncPostBackTimeout = null;
        this._scrollPosition = null;
        this._dataItems = null;
    }

    function Sys$WebForms$PageRequestManager$_doCallback(eventTarget, eventArgument, eventCallback, context, errorCallback, useAsync) {
        // DevDiv Bugs 125825: Do not allow callbacks to begin while an async postback is in progress to prevent EVENTVALIDATION corruption
        if (!this.get_isInAsyncPostBack()) {
            this._originalDoCallback(eventTarget, eventArgument, eventCallback, context, errorCallback, useAsync);
        }
    }


    function Sys$WebForms$PageRequestManager$_doPostBack(eventTarget, eventArgument) {
        this._additionalInput = null;

        var form = this._form;
        if ((eventTarget === null) || (typeof(eventTarget) === "undefined") || (this._isCrossPost)) {
            // Allow the default form submit to take place. Since it's a cross-page postback.
            // DevDiv 80942: we should fall to a full postback if event target is null or undefined
            this._postBackSettings = this._createPostBackSettings(false, null, null);
            // set to false so subsequent posts that don't go through DPWO aren't considered cross post
            this._isCrossPost = false;
        }
        else {
            // If it's not a cross-page post, see if we can find the DOM element that caused the postback
            var clientID = this._uniqueIDToClientID(eventTarget);
            var postBackElement = document.getElementById(clientID);
            if (!postBackElement) {
                // If the control has no matching DOM element we look for an exact
                // match from RegisterAsyncPostBackControl or RegisterPostBackControl.
                // If we can't find anything about it then we do a search based on
                // naming containers to still try and find a match.
                if (Array.contains(this._asyncPostBackControlIDs, eventTarget)) {
                    // Exact match for async postback
                    this._postBackSettings = this._createPostBackSettings(true, this._scriptManagerID + '|' + eventTarget, null);
                }
                else {
                    if (Array.contains(this._postBackControlIDs, eventTarget)) {
                        // Exact match for regular postback
                        this._postBackSettings = this._createPostBackSettings(false, null, null);
                    }
                    else {
                        // Find nearest element based on UniqueID in case the element calling
                        // __doPostBack doesn't have an ID. GridView does this for its Update
                        // button and without this we can't do async postbacks.
                        var nearestUniqueIDMatch = this._findNearestElement(eventTarget);
                        if (nearestUniqueIDMatch) {
                            // We found a related parent element, so walk up the DOM to find out what kind
                            // of postback we should do.
                            this._postBackSettings = this._getPostBackSettings(nearestUniqueIDMatch, eventTarget);
                        }
                        else {
                            // Can't find any DOM element at all related to the eventTarget,
                            // so we just give up and do a regular postback.
                            this._postBackSettings = this._createPostBackSettings(false, null, null);
                        }
                    }
                }
            }
            else {
                // The element was found, so walk up the DOM to find out what kind
                // of postback we should do.
                this._postBackSettings = this._getPostBackSettings(postBackElement, eventTarget);
            }
        }

        if (!this._postBackSettings.async) {
            // Temporarily restore the form's onsubmit handler expando while calling
            // the original ASP.NET 2.0 __doPostBack() function.
            form.onsubmit = this._onsubmit;
            this._originalDoPostBack(eventTarget, eventArgument);
            form.onsubmit = null;
            return;
        }

        form.__EVENTTARGET.value = eventTarget;
        form.__EVENTARGUMENT.value = eventArgument;
        this._onFormSubmit();
    }

    function Sys$WebForms$PageRequestManager$_doPostBackWithOptions(options) {
        this._isCrossPost = options && options.actionUrl;
        // note that when DoPostBackWithOptions is used, _doPostBack or _onFormSubmit, one of the two,
        // are guaranteed to be called next.
        // In both of those methods it is important to clear the isCrossPost flag so subsequent posts that
        // don't use DoPostBackWithOptions are not considered cross page posts.
        this._originalDoPostBackWithOptions(options);
    }

    function Sys$WebForms$PageRequestManager$_elementContains(container, element) {
        while (element) {
            if (element === container) {
                return true;
            }
            element = element.parentNode;
        }
        return false;
    }

    function Sys$WebForms$PageRequestManager$_endPostBack(error, response) {
        // DevDiv Bugs 130268: There could have been a 2nd request that started while this one was being
        // processed. Detect this by comparing the request for the current response to the _request field,
        // which stores the latest request that has begun. If they are different, do not clear the state
        // data that will be required by the 2nd request's response.
        if (this._request === response.get_webRequest()) {
            this._processingRequest = false;
            this._additionalInput = null;
            this._request = null;
        }

        var handler = this._get_eventHandlerList().getHandler("endRequest");
        var errorHandled = false;
        if (handler) {
            var eventArgs = new Sys.WebForms.EndRequestEventArgs(error, this._dataItems, response);
            handler(this, eventArgs);
            errorHandled = eventArgs.get_errorHandled();
        }
        // DevDiv Bugs 130268: See above
        if (!this._processingRequest) {
            this._dataItems = null;
        }
        if (error && !errorHandled) {
            // DevDiv 89485: throw, don't alert()
            throw error;
        }
    }



    function Sys$WebForms$PageRequestManager$_findNearestElement(uniqueID) {
        while (uniqueID.length > 0) {
            var clientID = this._uniqueIDToClientID(uniqueID);
            var element = document.getElementById(clientID);
            if (element) {
                return element;
            }
            var indexOfLastDollar = uniqueID.lastIndexOf('$');
            if (indexOfLastDollar === -1) {
                return null;
            }
            uniqueID = uniqueID.substring(0, indexOfLastDollar);
        }
        return null;
    }

    function Sys$WebForms$PageRequestManager$_findText(text, location) {
        var startIndex = Math.max(0, location - 20);
        var endIndex = Math.min(text.length, location + 20);
        return text.substring(startIndex, endIndex);
    }

    function Sys$WebForms$PageRequestManager$_fireDefaultButton(event, target) {
        // This is a copy of the function WebForm_FireDefaultButton as defined in WebForms.js.
        // The purpose is to hook into the WebForm_FireDefaultButton call with the code commented in the middle.
        // Other than that, there have been a few minor changes to the code but the logic is the same.
        if ((event.keyCode === 13) && !(event.srcElement && (event.srcElement.tagName.toLowerCase() === "textarea"))) {
            var defaultButton = document.getElementById(target);

            if (defaultButton && (typeof(defaultButton.click) !== "undefined")) {
                
                // Beginning of new code...
                
                // In all but FF this causes the form.onclick event to fire with the button as the event target.
                // In FF the the form.onclick event has the current focus control as the target, which prevents the
                // default button's server-side click event from firing. So we ensure the correct control is determined
                // to have caused the postback by saving the default button before clicking on it. The code in
                // onFormSubmit looks for this field and ensures the postback target is the button.
                this._activeDefaultButton = defaultButton;
                this._activeDefaultButtonClicked = false;
                try {
                    // click is synchronous -- it will immediately cause a form onclick event and then a form onsubmit event
                    // assuming nothing uses preventDefault() to cancel the event.
                    defaultButton.click();
                }
                finally {
                    // form submission may or may not be occuring after this point
                    this._activeDefaultButton = null;
                }
                
                // ...End of new code
                
                // cancel submission caused by hitting enter in the input control
                event.cancelBubble = true;
                if (typeof(event.stopPropagation) === "function") {
                    event.stopPropagation();
                }
                return false;
            }
        }
        return true;
    }

    function Sys$WebForms$PageRequestManager$_getPageLoadedEventArgs(initialLoad) {
        // -------------+------------------------------------+-----------------------
        // Situation    | In ID collections                  | In eventArg property
        // -------------+------------------------------------+-----------------------
        // Update (exp) | in panelsToRefresh                 | updated
        // Update (imp) | in new, in old, in childUP         | created
        // Create (exp) | in new, not in old, not in childUP | created
        // Create (imp) | in new, not in old, in childUP     | created
        // Delete (exp) | not in new, in old, not in childUP | ---
        // Delete (imp) | not in new, in old, in childUP     | ---
        // -------------+------------------------------------+-----------------------
        // (exp) = explicit
        // (imp) = implicit (happened as result of parent UpdatePanel updating)
        // --------------------------------------------------------------------------
        // in panelsToRefresh = updated
        // not updated, in new = created
        // else = don't care
        // --------------------------------------------------------------------------

        var updated = [];
        var created = [];

        // Default to empty array, else short circuit OR will take care of value
        var oldIDs = this._oldUpdatePanelIDs || []; // All panels before update
        var newIDs = this._updatePanelIDs; // All panels after update
        var childIDs = this._childUpdatePanelIDs || []; // Child panels created after update
        var refreshedIDs = this._panelsToRefreshIDs || []; // Parent panels created after update

        // in panelsToRefresh = updated
        for (var i = 0; i < refreshedIDs.length; i++) {
            Array.add(updated, document.getElementById(this._uniqueIDToClientID(refreshedIDs[i])));
        }

        // If the panel is in the new list and it is either the initial load
        // of the page a refreshed child, it is 'created'.
        for (var i = 0; i < newIDs.length; i++) {
            if (initialLoad || Array.indexOf(childIDs, newIDs[i]) !== -1) {
                Array.add(created, document.getElementById(this._uniqueIDToClientID(newIDs[i])));
            }
        }

        return new Sys.WebForms.PageLoadedEventArgs(updated, created, this._dataItems);
    }

    function Sys$WebForms$PageRequestManager$_getPageLoadingEventArgs() {
        // -------------+------------------------------------+-----------------------
        // Situation    | In ID collections                  | In eventArg property
        // -------------+------------------------------------+-----------------------
        // Update (exp) | in panelsToRefresh                 | updated
        // Update (imp) | in old, in new, in childUP         | deleted
        // Create (exp) | not in old, in new, not in childUP | ---
        // Create (imp) | not in old, in new, in childUP     | ---
        // Delete (exp) | in old, not in new, not in childUP | deleted
        // Delete (imp) | in old, not in new, in childUP     | deleted
        // -------------+------------------------------------+-----------------------
        // (exp) = explicit
        // (imp) = implicit (happened as result of parent UpdatePanel updating)
        // --------------------------------------------------------------------------
        // in panelsToRefresh = updated
        // not updated, (not in new or in childUP) = deleted
        // else = don't care
        // --------------------------------------------------------------------------

        var updated = [];
        var deleted = [];

        var oldIDs = this._oldUpdatePanelIDs;
        var newIDs = this._updatePanelIDs;
        var childIDs = this._childUpdatePanelIDs;
        var refreshedIDs = this._panelsToRefreshIDs;

        // in panelsToRefresh = updated
        for (var i = 0; i < refreshedIDs.length; i++) {
            Array.add(updated, document.getElementById(this._uniqueIDToClientID(refreshedIDs[i])));
        }

        // not in new or in childUP = deleted
        for (var i = 0; i < oldIDs.length; i++) {
            if (Array.indexOf(refreshedIDs, oldIDs[i]) === -1 &&
                (Array.indexOf(newIDs, oldIDs[i]) === -1 || Array.indexOf(childIDs, oldIDs[i]) > -1)) {
                Array.add(deleted, document.getElementById(this._uniqueIDToClientID(oldIDs[i])));
            }
        }

        return new Sys.WebForms.PageLoadingEventArgs(updated, deleted, this._dataItems);
    }

    function Sys$WebForms$PageRequestManager$_getPostBackSettings(element, elementUniqueID) {


        var originalElement = element;

        // Keep track of whether we have an AsyncPostBackControl but still
        // want to see if we're inside an UpdatePanel anyway.
        var proposedSettings = null;

        // Walk up DOM hierarchy to find out the nearest container of
        // the element that caused the postback.
        while (element) {
            if (element.id) {
                // First try an exact match for async postback, regular postback, or UpdatePanel
                if (!proposedSettings && Array.contains(this._asyncPostBackControlClientIDs, element.id)) {
                    // The element explicitly causes an async postback
                    proposedSettings = this._createPostBackSettings(true, this._scriptManagerID + '|' + elementUniqueID, originalElement);
                }
                else {
                    if (!proposedSettings && Array.contains(this._postBackControlClientIDs, element.id)) {
                        // The element explicitly doesn't cause an async postback
                        return this._createPostBackSettings(false, null, null);
                    }
                    else {
                        var indexOfPanel = Array.indexOf(this._updatePanelClientIDs, element.id);
                        if (indexOfPanel !== -1) {
                            // The element causes an async postback because it is inside an UpdatePanel
                            if (this._updatePanelHasChildrenAsTriggers[indexOfPanel]) {
                                // If it was in an UpdatePanel and the panel has ChildrenAsTriggers=true, then
                                // we do an async postback and refresh the given panel

                                // Although we do the search by looking at ClientIDs, we end
                                // up sending a UniqueID back to the server so that we can
                                // call FindControl() with it.
                                return this._createPostBackSettings(true, this._updatePanelIDs[indexOfPanel] + '|' + elementUniqueID, originalElement);
                            }
                            else {
                                // The element was inside an UpdatePanel so we do an async postback,
                                // but because it has ChildrenAsTriggers=false we don't update this panel.
                                return this._createPostBackSettings(true, this._scriptManagerID + '|' + elementUniqueID, originalElement);
                            }
                        }
                    }
                }

                // Then try near matches
                if (!proposedSettings && this._matchesParentIDInList(element.id, this._asyncPostBackControlClientIDs)) {
                    // The element explicitly causes an async postback
                    proposedSettings = this._createPostBackSettings(true, this._scriptManagerID + '|' + elementUniqueID, originalElement);
                }
                else {
                    if (!proposedSettings && this._matchesParentIDInList(element.id, this._postBackControlClientIDs)) {
                        // The element explicitly doesn't cause an async postback
                        return this._createPostBackSettings(false, null, null);
                    }
                }
            }

            element = element.parentNode;
        }

        // If we have proposed settings that means we found a match for an
        // AsyncPostBackControl but were still searching for an UpdatePanel.
        // If we got here that means we didn't find the UpdatePanel so we
        // just fall back to the original AsyncPostBackControl settings that
        // we created.
        if (!proposedSettings) {
            // The element doesn't cause an async postback
            return this._createPostBackSettings(false, null, null);
        }
        else {
            return proposedSettings;
        }
    }

    function Sys$WebForms$PageRequestManager$_getScrollPosition() {
        var d = document.documentElement;
        if (d && (this._validPosition(d.scrollLeft) || this._validPosition(d.scrollTop))) {
            return {
                x: d.scrollLeft,
                y: d.scrollTop
            };
        }
        else {
            d = document.body;
            if (d && (this._validPosition(d.scrollLeft) || this._validPosition(d.scrollTop))) {
                return {
                    x: d.scrollLeft,
                    y: d.scrollTop
                };
            }
            else {
                if (this._validPosition(window.pageXOffset) || this._validPosition(window.pageYOffset)) {
                    return {
                        x: window.pageXOffset,
                        y: window.pageYOffset
                    };
                }
                else {
                    return {
                        x: 0,
                        y: 0
                    };
                }
            }
        }
    }

    function Sys$WebForms$PageRequestManager$_initializeInternal(scriptManagerID, formElement) {
        if (this._prmInitialized) {
            throw Error.invalidOperation(Sys.WebForms.Res.PRM_CannotRegisterTwice);
        }
        this._prmInitialized = true;
        this._scriptManagerID = scriptManagerID;
        this._form = formElement;

        // TODO: Check that we found the form

        this._onsubmit = this._form.onsubmit;
        this._form.onsubmit = null;
        this._onFormSubmitHandler = Function.createDelegate(this, this._onFormSubmit);
        this._onFormElementClickHandler = Function.createDelegate(this, this._onFormElementClick);
        this._onWindowUnloadHandler = Function.createDelegate(this, this._onWindowUnload);
        Sys.UI.DomEvent.addHandler(this._form, 'submit', this._onFormSubmitHandler);
        Sys.UI.DomEvent.addHandler(this._form, 'click', this._onFormElementClickHandler);
        Sys.UI.DomEvent.addHandler(window, 'unload', this._onWindowUnloadHandler);

        this._originalDoPostBack = window.__doPostBack;
        if (this._originalDoPostBack) {
            window.__doPostBack = Function.createDelegate(this, this._doPostBack);
        }
        this._originalDoPostBackWithOptions = window.WebForm_DoPostBackWithOptions;
        if (this._originalDoPostBackWithOptions) {
            window.WebForm_DoPostBackWithOptions = Function.createDelegate(this, this._doPostBackWithOptions);
        }
        this._originalFireDefaultButton = window.WebForm_FireDefaultButton;
        if (this._originalFireDefaultButton) {
            window.WebForm_FireDefaultButton = Function.createDelegate(this, this._fireDefaultButton);
        }
        this._originalDoCallback = window.WebForm_DoCallback;
        if (this._originalDoCallback) {
            window.WebForm_DoCallback = Function.createDelegate(this, this._doCallback);
        }

        this._pageLoadedHandler = Function.createDelegate(this, this._pageLoadedInitialLoad);
        Sys.UI.DomEvent.addHandler(window, 'load', this._pageLoadedHandler);
    }

    function Sys$WebForms$PageRequestManager$_matchesParentIDInList(clientID, parentIDList) {
        for (var i = 0; i < parentIDList.length; i++) {
            if (clientID.startsWith(parentIDList[i] + "_")) {
                return true;
            }
        }
        return false;
    }

    function Sys$WebForms$PageRequestManager$_onFormElementActive(element, offsetX, offsetY) {
        // element: the form element that is active
        // offsetX/Y: if the element is an image button, the coordinates of the click
        if (element.disabled) {
            return;
        }

        // Check if the element that was clicked on should cause an async postback
        this._postBackSettings = this._getPostBackSettings(element, element.name);

        if (element.name) {
            if (element.tagName === 'INPUT') {
                var type = element.type;
                if (type === 'submit') {
                    // DevDiv Bugs 109456: Encode the name as well as the value
                    this._additionalInput = encodeURIComponent(element.name) + '=' + encodeURIComponent(element.value);
                }
                else if (type === 'image') {
                    // DevDiv Bugs 109456: Encode the name as well as the value
                    this._additionalInput = encodeURIComponent(element.name) + '.x=' + offsetX + '&' + encodeURIComponent(element.name) + '.y=' + offsetY;
                }
            }
            else if ((element.tagName === 'BUTTON') && (element.name.length !== 0) && (element.type === 'submit')) {
                // DevDiv Bugs 109456: Encode the name as well as the value
                this._additionalInput = encodeURIComponent(element.name) + '=' + encodeURIComponent(element.value);
            }
        }
    }

    function Sys$WebForms$PageRequestManager$_onFormElementClick(evt) {
        // flag used by fireDefaultButton to know whether calling click() on the default button raised this event.
        this._activeDefaultButtonClicked = (evt.target === this._activeDefaultButton);
        this._onFormElementActive(evt.target, evt.offsetX, evt.offsetY);
    }

    function Sys$WebForms$PageRequestManager$_onFormSubmit(evt) {
        var continueSubmit = true;
        var isCrossPost = this._isCrossPost;
        // set to false so subsequent posts that don't go through DPWO aren't considered cross post
        this._isCrossPost = false;

        // Call the statically declared form onsubmit statement if there was one
        if (this._onsubmit) {
            continueSubmit = this._onsubmit();
        }

        // If necessary, call dynamically added form onsubmit statements
        if (continueSubmit) {
            for (var i = 0; i < this._onSubmitStatements.length; i++) {
                if (!this._onSubmitStatements[i]()) {
                    continueSubmit = false;
                    break;
                }
            }
        }

        if (!continueSubmit) {
            if (evt) {
                evt.preventDefault();
            }
            return;
        }

        var form = this._form;
        if (isCrossPost) {
            // Allow the default form submit to take place. Since it's a cross-page postback.
            return;
        }

        // DevDiv Bugs 123782
        if (this._activeDefaultButton && !this._activeDefaultButtonClicked) {
            // we are submitting because a default button's click method was called by _fireDefaultButton
            // but calling click() explicitly did not cause a click event or raised it for a different element,
            // so we must manually create the correct postback options.
            // The button was clicked programmatically, so there are no offsetX or offsetY coordinates.
            this._onFormElementActive(this._activeDefaultButton, 0, 0);
        }

        // If the postback happened from outside an update panel, fall back
        // and do a normal postback.
        if (!this._postBackSettings.async) {
            return;
        }

        // Construct the form body
        var formBody = new Sys.StringBuilder();
        // DevDiv Bugs 109456: ScriptManager and UpdatePanel IDs should be encoded as well
        formBody.append(encodeURIComponent(this._scriptManagerID) + '=' + encodeURIComponent(this._postBackSettings.panelID) + '&');

        var count = form.elements.length;
        for (var i = 0; i < count; i++) {
            var element = form.elements[i];
            var name = element.name;
            if (typeof(name) === "undefined" || (name === null) || (name.length === 0)) {
                continue;
            }

            var tagName = element.tagName;

            if (tagName === 'INPUT') {
                var type = element.type;
                if ((type === 'text') ||
                    (type === 'password') ||
                    (type === 'hidden') ||
                    (((type === 'checkbox') || (type === 'radio')) && element.checked)) {
                    // DevDiv Bugs 109456: Encode the name as well as the value
                    formBody.append(encodeURIComponent(name));
                    formBody.append('=');
                    formBody.append(encodeURIComponent(element.value));
                    formBody.append('&');
                }
            }
            else if (tagName === 'SELECT') {
                var optionCount = element.options.length;
                for (var j = 0; j < optionCount; j++) {
                    var option = element.options[j];
                    if (option.selected) {
                        // DevDiv Bugs 109456: Encode the name as well as the value
                        formBody.append(encodeURIComponent(name));
                        formBody.append('=');
                        formBody.append(encodeURIComponent(option.value));
                        formBody.append('&');
                    }
                }
            }
            else if (tagName === 'TEXTAREA') {
                // DevDiv Bugs 109456: Encode the name as well as the value
                formBody.append(encodeURIComponent(name));
                formBody.append('=');
                formBody.append(encodeURIComponent(element.value));
                formBody.append('&');
            }
        }

        if (this._additionalInput) {
            formBody.append(this._additionalInput);
            this._additionalInput = null;
        }
        
        var request = new Sys.Net.WebRequest();
        var action = form.action;
        if (Sys.Browser.agent === Sys.Browser.InternetExplorer) {
            // DevDiv Bugs 85367: In IE we must encode the path portion of the request because XHR doesn't do it for us.
            // We only want to encode the path fragment, not the querystring.
            var queryIndex = action.indexOf('?');
            if (queryIndex !== -1) {
                var path = action.substr(0, queryIndex);
                if (path.indexOf("%") === -1) {
                    // only encode if the path portion is not already encoded
                    // tear off the query, encode, then put the query back
                    action = encodeURI(path) + action.substr(queryIndex);
                }
            }
            else if (action.indexOf("%") === -1) {
                // only encode if the path portion is not already encoded
                action = encodeURI(action);
            }
        }
        request.set_url(action);
        request.get_headers()['X-MicrosoftAjax'] = 'Delta=true';
        request.get_headers()['Cache-Control'] = 'no-cache';
        request.set_timeout(this._asyncPostBackTimeout);
        request.add_completed(Function.createDelegate(this, this._onFormSubmitCompleted));
        request.set_body(formBody.toString());

        var handler = this._get_eventHandlerList().getHandler("initializeRequest");
        if (handler) {
            var eventArgs = new Sys.WebForms.InitializeRequestEventArgs(request, this._postBackSettings.sourceElement);
            handler(this, eventArgs);
            continueSubmit = !eventArgs.get_cancel();
        }

        if (!continueSubmit) {
            if (evt) {
                evt.preventDefault();
            }
            return;
        }

        // Save the scroll position
        this._scrollPosition = this._getScrollPosition();


        // If we're going on to make a new request (i.e. the user didn't cancel), and
        // there's still an ongoing request, we have to abort it. If we don't then it
        // will exhaust the browser's two connections per server limit very quickly.
        this.abortPostBack();

        handler = this._get_eventHandlerList().getHandler("beginRequest");
        if (handler) {
            var eventArgs = new Sys.WebForms.BeginRequestEventArgs(request, this._postBackSettings.sourceElement);
            handler(this, eventArgs);
        }
        
        // DevDiv Bugs 125825: Cancel any pending callbacks when an async postback begins
        if (this._originalDoCallback) {
            this._cancelPendingCallbacks();
        }

        this._request = request;
        request.invoke();

        // Suppress the default form submit functionality
        if (evt) {
            evt.preventDefault();
        }
    }

    function Sys$WebForms$PageRequestManager$_onFormSubmitCompleted(sender, eventArgs) {
        this._processingRequest = true;

        var delimitByLengthDelimiter = '|';
        // sender is the executor object

        if (sender.get_timedOut()) {
            this._endPostBack(this._createPageRequestManagerTimeoutError(), sender);
            return;
        }

        if (sender.get_aborted()) {
            this._endPostBack(null, sender);
            return;
        }

        // If the response isn't the response to the latest request, ignore it (last one wins)
        if (!this._request || sender.get_webRequest() !== this._request) {
            return;
        }

        var errorMessage;
        var delta = [];

        // If we have an invalid status code, go into error mode
        if (sender.get_statusCode() !== 200) {
            this._endPostBack(this._createPageRequestManagerServerError(sender.get_statusCode()), sender);
            return;
        }

        // Parse the message format
        // General format: length|type|id|content|
        var reply = sender.get_responseData();
        var delimiterIndex, len, type, id, content;
        var replyIndex = 0;
        var parserErrorDetails = null;

        while (replyIndex < reply.length) {
            // length| - from index to next delimiter
            delimiterIndex = reply.indexOf(delimitByLengthDelimiter, replyIndex);
            if (delimiterIndex === -1) {
                parserErrorDetails = this._findText(reply, replyIndex);
                break;
            }
            len = parseInt(reply.substring(replyIndex, delimiterIndex), 10);
            if ((len % 1) !== 0) {
                parserErrorDetails = this._findText(reply, replyIndex);
                break;
            }
            replyIndex = delimiterIndex + 1;

            // type| - from index to next delimiter
            delimiterIndex = reply.indexOf(delimitByLengthDelimiter, replyIndex);
            if (delimiterIndex === -1) {
                parserErrorDetails = this._findText(reply, replyIndex);
                break;
            }
            type = reply.substring(replyIndex, delimiterIndex);
            replyIndex = delimiterIndex + 1;

            // id| - from index to next delimiter
            delimiterIndex = reply.indexOf(delimitByLengthDelimiter, replyIndex);
            if (delimiterIndex === -1) {
                parserErrorDetails = this._findText(reply, replyIndex);
                break;
            }
            id = reply.substring(replyIndex, delimiterIndex);
            replyIndex = delimiterIndex + 1;

            // content - the next 'len' characters after index
            if ((replyIndex + len) >= reply.length) {
                parserErrorDetails = this._findText(reply, reply.length);
                break;
            }
            // DevDiv 75383: We no longer encode null characters in the response content, so we no longer decode them either.
            // See comment in server side PageRequestManager for why.
            content = reply.substr(replyIndex, len);
            replyIndex += len;

            // terminating delimiter
            if (reply.charAt(replyIndex) !== delimitByLengthDelimiter) {
                parserErrorDetails = this._findText(reply, replyIndex);
                break;
            }

            replyIndex++;

            Array.add(delta, {type: type, id: id, content: content});
        }

        // If there was a parser error, go into error mode
        if (parserErrorDetails) {
            this._endPostBack(this._createPageRequestManagerParserError(String.format(Sys.WebForms.Res.PRM_ParserErrorDetails, parserErrorDetails)), sender);
            return;
        }


        var updatePanelNodes = [];
        var hiddenFieldNodes = [];
        var arrayDeclarationNodes = [];
        var scriptBlockNodes = [];
        var scriptStartupNodes = [];
        var expandoNodes = [];
        var onSubmitNodes = [];
        var dataItemNodes = [];
        var dataItemJsonNodes = [];
        var scriptDisposeNodes = [];
        var asyncPostBackControlIDsNode, postBackControlIDsNode,
            updatePanelIDsNode, asyncPostBackTimeoutNode,
            childUpdatePanelIDsNode, panelsToRefreshNode, formActionNode;

        // Sort delta by type
        for (var i = 0; i < delta.length; i++) {
            var deltaNode = delta[i];
            switch (deltaNode.type) {
                case "updatePanel":
                    Array.add(updatePanelNodes, deltaNode);
                    break;
                case "hiddenField":
                    Array.add(hiddenFieldNodes, deltaNode);
                    break;
                case "arrayDeclaration":
                    Array.add(arrayDeclarationNodes, deltaNode);
                    break;
                case "scriptBlock":
                    Array.add(scriptBlockNodes, deltaNode);
                    break;
                case "scriptStartupBlock":
                    Array.add(scriptStartupNodes, deltaNode);
                    break;
                case "expando":
                    Array.add(expandoNodes, deltaNode);
                    break;
                case "onSubmit":
                    Array.add(onSubmitNodes, deltaNode);
                    break;
                case "asyncPostBackControlIDs":
                    asyncPostBackControlIDsNode = deltaNode;
                    break;
                case "postBackControlIDs":
                    postBackControlIDsNode = deltaNode;
                    break;
                case "updatePanelIDs":
                    updatePanelIDsNode = deltaNode;
                    break;
                case "asyncPostBackTimeout":
                    asyncPostBackTimeoutNode = deltaNode;
                    break;
                case "childUpdatePanelIDs":
                    childUpdatePanelIDsNode = deltaNode;
                    break;
                case "panelsToRefreshIDs":
                    panelsToRefreshNode = deltaNode;
                    break;
                case "formAction":
                    formActionNode = deltaNode;
                    break;
                case "dataItem":
                    Array.add(dataItemNodes, deltaNode);
                    break;
                case "dataItemJson":
                    Array.add(dataItemJsonNodes, deltaNode);
                    break;
                case "scriptDispose":
                    Array.add(scriptDisposeNodes, deltaNode);
                    break;
                case "pageRedirect":
                    // DevDiv Bugs 100201: IE does not set referrer header on redirect if you set window.location, inject anchor node instead
                    // dynamic anchor technique only works on IE
                    if (Sys.Browser.agent === Sys.Browser.InternetExplorer) {
                        var anchor = document.createElement("a");
                        anchor.style.display = 'none';
                        // cancel bubble so body.onclick is not raised
                        anchor.attachEvent("onclick", cancelBubble);
                        anchor.href = deltaNode.content;
                        document.body.appendChild(anchor);
                        anchor.click();
                        anchor.detachEvent("onclick", cancelBubble);
                        document.body.removeChild(anchor);
                        
                        function cancelBubble(e) {
                            e.cancelBubble = true;
                        }
                    }
                    else {
                        window.location.href = deltaNode.content;
                    }
                    return;
                case "error":
                    // The id contains the HTTP status code and the content contains the message
                    this._endPostBack(this._createPageRequestManagerServerError(Number.parseInvariant(deltaNode.id), deltaNode.content), sender);
                    return;
                case "pageTitle":
                    document.title = deltaNode.content;
                    break;
                case "focus":
                    this._controlIDToFocus = deltaNode.content;
                    break;
                default:
                    // If there was an unknown message, go into error mode
                    this._endPostBack(this._createPageRequestManagerParserError(String.format(Sys.WebForms.Res.PRM_UnknownToken, deltaNode.type)), sender);
                    return;
            }
        }

        var i;

        // Update the list of UpdatePanels and async postback controls
        if (asyncPostBackControlIDsNode && postBackControlIDsNode &&
            updatePanelIDsNode && panelsToRefreshNode &&
            asyncPostBackTimeoutNode && childUpdatePanelIDsNode) {

            this._oldUpdatePanelIDs = this._updatePanelIDs;
            var childUpdatePanelIDsString = childUpdatePanelIDsNode.content;
            this._childUpdatePanelIDs = childUpdatePanelIDsString.length ? childUpdatePanelIDsString.split(',') : [];

            var asyncPostBackControlIDsArray = this._splitNodeIntoArray(asyncPostBackControlIDsNode);
            var postBackControlIDsArray = this._splitNodeIntoArray(postBackControlIDsNode);
            var updatePanelIDsArray = this._splitNodeIntoArray(updatePanelIDsNode);
            this._panelsToRefreshIDs = this._splitNodeIntoArray(panelsToRefreshNode);

            // Validate that all the top level UpdatePanels that we plan to update exist
            // in the active document. We do this early so that we can later assume that
            // all referenced UpdatePanels exist.
            for (i = 0; i < this._panelsToRefreshIDs.length; i++) {
                var panelClientID = this._uniqueIDToClientID(this._panelsToRefreshIDs[i]);
                if (!document.getElementById(panelClientID)) {
                    this._endPostBack(Error.invalidOperation(String.format(Sys.WebForms.Res.PRM_MissingPanel, panelClientID)), sender);
                    return;
                }
            }

            var asyncPostBackTimeout = asyncPostBackTimeoutNode.content;
            this._updateControls(updatePanelIDsArray, asyncPostBackControlIDsArray, postBackControlIDsArray, asyncPostBackTimeout);
        }

        // Process data items
        this._dataItems = {};
        for (i = 0; i < dataItemNodes.length; i++) {
            var dataItemNode = dataItemNodes[i];
            this._dataItems[dataItemNode.id] = dataItemNode.content;
        }
        for (i = 0; i < dataItemJsonNodes.length; i++) {
            var dataItemJsonNode = dataItemJsonNodes[i];
            this._dataItems[dataItemJsonNode.id] = Sys.Serialization.JavaScriptSerializer.deserialize(dataItemJsonNode.content);
        }


        var handler = this._get_eventHandlerList().getHandler("pageLoading");
        if (handler) {
            handler(this, this._getPageLoadingEventArgs());
        }


        // Update the form action (it may have changed due to cookieless session, etc.)
        if (formActionNode) {
            this._form.action = formActionNode.content;
        }
        
        // DevDiv Bugs 127756: Load script includes before updating the HTML.
        // After updating the HTML, load script blocks, startup scripts, hidden fields, arrays, expandos, and onsubmit statements
        // Includes must be loaded first because the new DOM may have inline event handlers declared that depend on new
        // resources in the include files. They may also depend on resources in client script blocks.
        // However, script blocks can still load after updating the HTML because they load synchronously,
        // and therefore will still be loaded before any event handlers could fire. They can't be loaded before updating the HTML,
        // because dispose scripts must be executed first in case they dispose of resources declared by the script blocks.
        // Neither can the HTML be disposed of, then scripts loaded, and then the HTML updated, because that would cause a flicker.
        // This means ClientScriptIncludes and ClientScriptBlocks will load disjunct from one another during async updates,
        // but script includes should not depend on script blocks. This mechanism allows inline event handlers, a likely scenario,
        // whereas complex dependencies between script includes and script blocks is uncommon and not recommended.
        // Finally -- startup scripts could contain more script includes, so there are two calls to the script loader, which breaks the
        // completion handling of an async update into 3 separate functions: _onFormSubmitCompleted, _scriptIncludesLoadComplete, _scriptsLoadComplete.
        
        // Read existing script elements (user code may have manually inserted a script element, this will ensure we know about those).
        // This is used to detect duplicates so we don't reload scripts that have already loaded.
        Sys._ScriptLoader.readLoadedScripts();

        // Starting batch mode for component creation to allow for
        // two-pass creation and components that reference each other.
        // endCreateComponents called from _scriptsLoadComplete.
        Sys.Application.beginCreateComponents();

        // First load ClientScriptIncludes
        var scriptLoader = Sys._ScriptLoader.getInstance();
        this._queueScripts(scriptLoader, scriptBlockNodes, true, false);
        
        // Save context into a member so that we can later get it from the completion callback
        this._updateContext = {
            response: sender,
            updatePanelNodes: updatePanelNodes,
            scriptBlockNodes: scriptBlockNodes,
            scriptDisposeNodes: scriptDisposeNodes,
            hiddenFieldNodes: hiddenFieldNodes,
            arrayDeclarationNodes: arrayDeclarationNodes,
            expandoNodes: expandoNodes,
            scriptStartupNodes: scriptStartupNodes,
            onSubmitNodes: onSubmitNodes
        };

        // PRM does not support load timeout
        //                      timeout, completeCallback, failedCallback, timeoutCallback
        scriptLoader.loadScripts(0,
            Function.createDelegate(this, this._scriptIncludesLoadComplete),
            Function.createDelegate(this, this._scriptIncludesLoadFailed),
            null);
    }

    function Sys$WebForms$PageRequestManager$_onWindowUnload(evt) {
        this.dispose();
    }

    function Sys$WebForms$PageRequestManager$_pageLoaded(initialLoad) {
        var handler = this._get_eventHandlerList().getHandler("pageLoaded");
        if (handler) {
            handler(this, this._getPageLoadedEventArgs(initialLoad));
        }
        if (!initialLoad) {
            // If this isn't the first page load (i.e. we are doing an async postback), we
            // need to re-raise the Application's load event.
            Sys.Application.raiseLoad();
        }
    }

    function Sys$WebForms$PageRequestManager$_pageLoadedInitialLoad(evt) {
        this._pageLoaded(true);
    }

    function Sys$WebForms$PageRequestManager$_queueScripts(scriptLoader, scriptBlockNodes, queueIncludes, queueBlocks) {
        
        for (i = 0; i < scriptBlockNodes.length; i++) {
            var scriptBlockType = scriptBlockNodes[i].id;
            switch (scriptBlockType) {
                case "ScriptContentNoTags":
                    if (!queueBlocks) {
                        continue;
                    }
                    // The content contains raw JavaScript
                    scriptLoader.queueScriptBlock(scriptBlockNodes[i].content);
                    break;
                case "ScriptContentWithTags":
                    // The content contains serialized attributes for the script tag
                    var scriptTagAttributes;
                    eval("scriptTagAttributes = " + scriptBlockNodes[i].content);

                    if (scriptTagAttributes.src) {
                        // Don't reload a script that's already in the DOM
                        // or if not queuing includes
                        if (!queueIncludes || Sys._ScriptLoader.isScriptLoaded(scriptTagAttributes.src)) {
                            continue;
                        }
                    }
                    else if (!queueBlocks) {
                        // its a script block
                        continue;
                    }

                    scriptLoader.queueCustomScriptTag(scriptTagAttributes);
                    break;
                case "ScriptPath":
                    // Don't reload a script that's already in the DOM
                    // only if we aren't loading includes
                    if (!queueIncludes || Sys._ScriptLoader.isScriptLoaded(scriptBlockNodes[i].content)) {
                        continue;
                    }

                    // The content contains the URL reference of the script to load
                    scriptLoader.queueScriptReference(scriptBlockNodes[i].content);
                    break;
            }
        }        
    }

    function Sys$WebForms$PageRequestManager$_registerDisposeScript(panelID, disposeScript) {
        if (!this._scriptDisposes[panelID]) {
            this._scriptDisposes[panelID] = [disposeScript];
        }
        else {
            Array.add(this._scriptDisposes[panelID], disposeScript);
        }
    }

    function Sys$WebForms$PageRequestManager$_scriptIncludesLoadComplete() {
        var ctx = this._updateContext;

        // Update the rendering for each delta panel and dispose all the contents.
        // The dispose can happen either through DOM elements that have dispose
        // support or through direct dispose registrations done on the server.
        for (i = 0; i < ctx.updatePanelNodes.length; i++) {
            var deltaUpdatePanel = ctx.updatePanelNodes[i];

            var deltaPanelID = deltaUpdatePanel.id;
            var deltaPanelRendering = deltaUpdatePanel.content;

            var updatePanelElement = document.getElementById(deltaPanelID);

            if (!updatePanelElement) {
                this._endPostBack(Error.invalidOperation(String.format(Sys.WebForms.Res.PRM_MissingPanel, deltaPanelID)), ctx.response);
                return;
            }

            this._updatePanel(updatePanelElement, deltaPanelRendering);
        }

        // Update the dispose entries
        // We have to do this after we disposed all the panels since otherwise
        // we would run the dispose scripts on the brand new markup.
        for (i = 0; i < ctx.scriptDisposeNodes.length; i++) {
            var disposePanelId = ctx.scriptDisposeNodes[i].id;
            var disposeScript = ctx.scriptDisposeNodes[i].content;
            this._registerDisposeScript(disposePanelId, disposeScript);
        }

        // Update the hidden fields
        var viewStateEncrypted = false;
        for (i = 0; i < ctx.hiddenFieldNodes.length; i++) {
            var id = ctx.hiddenFieldNodes[i].id;
            var value = ctx.hiddenFieldNodes[i].content;
            
            // DevDiv Bugs 138251: Must remove this hidden field if it is not contained in the update
            if (id === "__VIEWSTATEENCRYPTED") {
                viewStateEncrypted = true;
            }

            var hiddenFieldElement = document.getElementById(id);
            if (!hiddenFieldElement) {
                // If the hidden field doesn't exist, create it
                hiddenFieldElement = document.createElement('input');
                hiddenFieldElement.id = id;
                hiddenFieldElement.name = id;
                hiddenFieldElement.type = 'hidden';
                this._form.appendChild(hiddenFieldElement);
            }
            hiddenFieldElement.value = value;
        }
        
        if (!viewStateEncrypted) {
            // DevDiv Bugs 138251
            // The __VIEWSTATEENCRYPTED field was not registered, so viewstate is not encrypted.
            // Remove the __VIEWSTATEENCRYPTED hidden field if it exists. ASP.NET uses the existence of
            // this field to indicate that viewstate is encrypted.
            var viewStateEncryptedField = document.getElementById("__VIEWSTATEENCRYPTED");
            if (viewStateEncryptedField) {
                viewStateEncryptedField.parentNode.removeChild(viewStateEncryptedField);
            }
        }

        if (ctx.scriptsFailed) {
            // the script includes in the first step failed to load. Raise the error now that the DOM is updated.
            throw Sys._ScriptLoader._errorScriptLoadFailed(ctx.scriptsFailed.src, ctx.scriptsFailed.multipleCallbacks);
        }
        
        // continue on to loading literal client script blocks, arrays, expandos, startup scripts, and onSubmitStatements (in that order)

        var scriptLoader = Sys._ScriptLoader.getInstance();
        
        // Load literal script blocks
        this._queueScripts(scriptLoader, ctx.scriptBlockNodes, false, true);

        // Update array declarations
        var arrayScript = '';
        for (i = 0; i < ctx.arrayDeclarationNodes.length; i++) {
            arrayScript += "Sys.WebForms.PageRequestManager._addArrayElement('" + ctx.arrayDeclarationNodes[i].id + "', " + ctx.arrayDeclarationNodes[i].content + ");\r\n";
        }

        // Update expandos
        var expandoScript = '';
        for (i = 0; i < ctx.expandoNodes.length; i++) {
            var propertyReference = ctx.expandoNodes[i].id;
            var propertyValue = ctx.expandoNodes[i].content;
            expandoScript += propertyReference + " = " + propertyValue + "\r\n";
        }

        // Execute these dynamically created scripts through the ScriptLoader so that
        // they get executed in the global window context. If we execute them through
        // calls to eval() then they will evaluate in this function's context, which
        // is incorrect.
        if (arrayScript.length) {
            scriptLoader.queueScriptBlock(arrayScript);
        }
        if (expandoScript.length) {
            scriptLoader.queueScriptBlock(expandoScript);
        }
        
        this._queueScripts(scriptLoader, ctx.scriptStartupNodes, true, true);

        // Update onsubmit statements
        // Create a function that calls the submit statement and otherwise returns true;
        var onSubmitStatementScript = '';
        for (var i = 0; i < ctx.onSubmitNodes.length; i++) {
            if (i === 0) {
                onSubmitStatementScript = 'Array.add(Sys.WebForms.PageRequestManager.getInstance()._onSubmitStatements, function() {\r\n';
            }

            onSubmitStatementScript += ctx.onSubmitNodes[i].content + "\r\n";
        }
        if (onSubmitStatementScript.length) {
            onSubmitStatementScript += "\r\nreturn true;\r\n});\r\n";
            scriptLoader.queueScriptBlock(onSubmitStatementScript);
        }

        // PRM does not support load timeout
        //                      timeout, completeCallback, failedCallback, timeoutCallback
        // no failed callback -- if there is a failure ScriptLoader will throw.
        scriptLoader.loadScripts(0, Function.createDelegate(this, this._scriptsLoadComplete), null, null);

        // Do not add code after the call to loadScripts(). If you need to do extra
        // processing after scripts are loaded, do it in _scriptsLoadComplete.
    }

    function Sys$WebForms$PageRequestManager$_scriptIncludesLoadFailed(scriptLoader, scriptElement, multipleCallbacks) {
        // called when script includes fail to load from _onFormSubmitComplete
        // save error details so we can raise the error later
        this._updateContext.scriptsFailed = { src: scriptElement.src, multipleCallbacks: multipleCallbacks };
        this._scriptIncludesLoadComplete();
    }

    function Sys$WebForms$PageRequestManager$_scriptsLoadComplete() {
        // This function gets called after all scripts have been loaded by the PRM.
        // It might also get called directly if there aren't any scripts to load.
        // Its purpose is to finish off the processing of a postback.
        var response = this._updateContext.response;
        this._updateContext = null;

        // These two variables are used by ASP.net callbacks.
        // Because of how callbacks work, we have to re-initialize the
        // variables to an empty state so that their values don't keep
        // growing on every async postback. Then we have to re-initialize
        // the callback process.
        if (window.__theFormPostData) {
            window.__theFormPostData = "";
        }
        if (window.__theFormPostCollection) {
            window.__theFormPostCollection = [];
        }
        if (window.WebForm_InitCallback) {
            window.WebForm_InitCallback();
        }

        // Restore scroll position
        if (this._scrollPosition) {
            // window.scrollTo() is supported by IE and Firefox (and possibly Safari)
            if (window.scrollTo) {
                window.scrollTo(this._scrollPosition.x, this._scrollPosition.y);
            }
            this._scrollPosition = null;
        }

        Sys.Application.endCreateComponents();

        // Raise completion events
        this._pageLoaded(false);

        this._endPostBack(null, response);

        // Set focus
        if (this._controlIDToFocus) {
            var focusTarget;
            var oldContentEditableSetting;
            if (Sys.Browser.agent === Sys.Browser.InternetExplorer) {
                // IE6 and IE7 have a bug where you can't focus certain elements
                // if they've been changed in the DOM. To work around this they
                // suggested turning off contentEditable temporarily while focusing
                // the target element.
                var targetControl = $get(this._controlIDToFocus);

                focusTarget = targetControl;
                // If the focus control isn't focusable, default to the first focusable child
                if (targetControl && (!WebForm_CanFocus(targetControl))) {
                    focusTarget = WebForm_FindFirstFocusableChild(targetControl);
                }
                // If we found the focus target and it supports contentEditable then
                // turn it off. Otherwise forget we ever tried to disable content editing.
                if (focusTarget && (typeof(focusTarget.contentEditable) !== "undefined")) {
                    oldContentEditableSetting = focusTarget.contentEditable;
                    focusTarget.contentEditable = false;
                }
                else {
                    focusTarget = null;
                }
            }
            WebForm_AutoFocus(this._controlIDToFocus);
            if (focusTarget) {
                // If we did the contentEditable hack, reset the value
                focusTarget.contentEditable = oldContentEditableSetting;
            }
            this._controlIDToFocus = null;
        }
    }

    function Sys$WebForms$PageRequestManager$_splitNodeIntoArray(node) {
        var str = node.content;
        var arr = str.length ? str.split(',') : [];
        return arr;
    }

    function Sys$WebForms$PageRequestManager$_uniqueIDToClientID(uniqueID) {
        // Convert unique IDs to client IDs by replacing all '$' with '_'
        return uniqueID.replace(/\$/g, '_');
    }

    function Sys$WebForms$PageRequestManager$_updateControls(updatePanelIDs, asyncPostBackControlIDs, postBackControlIDs, asyncPostBackTimeout) {
        if (updatePanelIDs) {
            // Parse the array that has the UniqueIDs and split the data out.
            // The array contains UniqueIDs with either a 't' or 'f' prefix
            // indicating whether the panel has ChildrenAsTriggers enabled.
            this._updatePanelIDs = new Array(updatePanelIDs.length);
            this._updatePanelClientIDs = new Array(updatePanelIDs.length);
            this._updatePanelHasChildrenAsTriggers = new Array(updatePanelIDs.length);
            for (var i = 0; i < updatePanelIDs.length; i++) {
                var realPanelID = updatePanelIDs[i].substr(1);
                var childrenAsTriggers = (updatePanelIDs[i].charAt(0) === 't');

                // The three arrays are kept in sync by index
                this._updatePanelHasChildrenAsTriggers[i] = childrenAsTriggers;
                this._updatePanelIDs[i] = realPanelID;
                this._updatePanelClientIDs[i] = this._uniqueIDToClientID(realPanelID);
            }
            this._asyncPostBackTimeout = asyncPostBackTimeout * 1000;
        }
        else {
            this._updatePanelIDs = [];
            this._updatePanelClientIDs = [];
            this._updatePanelHasChildrenAsTriggers = [];
            this._asyncPostBackTimeout = 0;
        }

        this._asyncPostBackControlIDs = [];
        this._asyncPostBackControlClientIDs = [];
        this._convertToClientIDs(asyncPostBackControlIDs, this._asyncPostBackControlIDs, this._asyncPostBackControlClientIDs);

        this._postBackControlIDs = [];
        this._postBackControlClientIDs = [];
        this._convertToClientIDs(postBackControlIDs, this._postBackControlIDs, this._postBackControlClientIDs);
    }

    function Sys$WebForms$PageRequestManager$_updatePanel(updatePanelElement, rendering) {

        for (var updatePanelID in this._scriptDisposes) {
            if (this._elementContains(updatePanelElement, document.getElementById(updatePanelID))) {
                // Run all the dispose scripts for this panel
                var disposeScripts = this._scriptDisposes[updatePanelID];
                for (var i = 0; i < disposeScripts.length; i++) {
                    eval(disposeScripts[i]);
                }

                // Remove the dispose entries for this panel
                delete this._scriptDisposes[updatePanelID];
            }
        }

        this._destroyTree(updatePanelElement);

        // Update the region with the new UpdatePanel content
        updatePanelElement.innerHTML = rendering;
    }

    function Sys$WebForms$PageRequestManager$_validPosition(position) {
        return (typeof(position) !== "undefined") && (position !== null) && (position !== 0);
    }
Sys.WebForms.PageRequestManager.prototype = {
    _get_eventHandlerList: Sys$WebForms$PageRequestManager$_get_eventHandlerList,
    get_isInAsyncPostBack: Sys$WebForms$PageRequestManager$get_isInAsyncPostBack,
    // Events
    add_beginRequest: Sys$WebForms$PageRequestManager$add_beginRequest,
    remove_beginRequest: Sys$WebForms$PageRequestManager$remove_beginRequest,
    add_endRequest: Sys$WebForms$PageRequestManager$add_endRequest,
    remove_endRequest: Sys$WebForms$PageRequestManager$remove_endRequest,
    add_initializeRequest: Sys$WebForms$PageRequestManager$add_initializeRequest,
    remove_initializeRequest: Sys$WebForms$PageRequestManager$remove_initializeRequest,
    add_pageLoaded: Sys$WebForms$PageRequestManager$add_pageLoaded,
    remove_pageLoaded: Sys$WebForms$PageRequestManager$remove_pageLoaded,
    add_pageLoading: Sys$WebForms$PageRequestManager$add_pageLoading,
    remove_pageLoading: Sys$WebForms$PageRequestManager$remove_pageLoading,
    abortPostBack: Sys$WebForms$PageRequestManager$abortPostBack,
    _cancelPendingCallbacks: Sys$WebForms$PageRequestManager$_cancelPendingCallbacks,
    _createPageRequestManagerTimeoutError: Sys$WebForms$PageRequestManager$_createPageRequestManagerTimeoutError,
    _createPageRequestManagerServerError: Sys$WebForms$PageRequestManager$_createPageRequestManagerServerError,
    _createPageRequestManagerParserError: Sys$WebForms$PageRequestManager$_createPageRequestManagerParserError,
    _createPostBackSettings: Sys$WebForms$PageRequestManager$_createPostBackSettings,
    _convertToClientIDs: Sys$WebForms$PageRequestManager$_convertToClientIDs,
    _destroyTree: Sys$WebForms$PageRequestManager$_destroyTree,
    dispose: Sys$WebForms$PageRequestManager$dispose,
    _doCallback: Sys$WebForms$PageRequestManager$_doCallback,
    // New implementation of __doPostBack
    _doPostBack: Sys$WebForms$PageRequestManager$_doPostBack,
    _doPostBackWithOptions: Sys$WebForms$PageRequestManager$_doPostBackWithOptions,
    _elementContains: Sys$WebForms$PageRequestManager$_elementContains,
    _endPostBack: Sys$WebForms$PageRequestManager$_endPostBack,
    // Finds the nearest element to the given UniqueID. If an element is not
    // found for the exact UniqueID, it walks up the parent chain to look for it.
    _findNearestElement: Sys$WebForms$PageRequestManager$_findNearestElement,
    _findText: Sys$WebForms$PageRequestManager$_findText,
    _fireDefaultButton: Sys$WebForms$PageRequestManager$_fireDefaultButton,
    _getPageLoadedEventArgs: Sys$WebForms$PageRequestManager$_getPageLoadedEventArgs,
    _getPageLoadingEventArgs: Sys$WebForms$PageRequestManager$_getPageLoadingEventArgs,
    _getPostBackSettings: Sys$WebForms$PageRequestManager$_getPostBackSettings,
    _getScrollPosition: Sys$WebForms$PageRequestManager$_getScrollPosition,
    _initializeInternal: Sys$WebForms$PageRequestManager$_initializeInternal,
    _matchesParentIDInList: Sys$WebForms$PageRequestManager$_matchesParentIDInList,
    _onFormElementActive: Sys$WebForms$PageRequestManager$_onFormElementActive,
    _onFormElementClick: Sys$WebForms$PageRequestManager$_onFormElementClick,
    _onFormSubmit: Sys$WebForms$PageRequestManager$_onFormSubmit,
    _onFormSubmitCompleted: Sys$WebForms$PageRequestManager$_onFormSubmitCompleted,
    _onWindowUnload: Sys$WebForms$PageRequestManager$_onWindowUnload,
    _pageLoaded: Sys$WebForms$PageRequestManager$_pageLoaded,
    _pageLoadedInitialLoad: Sys$WebForms$PageRequestManager$_pageLoadedInitialLoad,
    _queueScripts: Sys$WebForms$PageRequestManager$_queueScripts,
    _registerDisposeScript: Sys$WebForms$PageRequestManager$_registerDisposeScript,
    _scriptIncludesLoadComplete: Sys$WebForms$PageRequestManager$_scriptIncludesLoadComplete,
    _scriptIncludesLoadFailed: Sys$WebForms$PageRequestManager$_scriptIncludesLoadFailed,
    _scriptsLoadComplete: Sys$WebForms$PageRequestManager$_scriptsLoadComplete,
    _splitNodeIntoArray: Sys$WebForms$PageRequestManager$_splitNodeIntoArray,
    _uniqueIDToClientID: Sys$WebForms$PageRequestManager$_uniqueIDToClientID,
    _updateControls: Sys$WebForms$PageRequestManager$_updateControls,
    _updatePanel: Sys$WebForms$PageRequestManager$_updatePanel,
    _validPosition: Sys$WebForms$PageRequestManager$_validPosition
}

Sys.WebForms.PageRequestManager.getInstance = function Sys$WebForms$PageRequestManager$getInstance() {
    /// <summary locid="M:J#Sys.WebForms.PageRequestManager.getInstance" />
    /// <returns type="Sys.WebForms.PageRequestManager"></returns>
    if (arguments.length !== 0) throw Error.parameterCount();
    var prm = Sys.WebForms.PageRequestManager._instance;
    if (!prm) {
        prm = Sys.WebForms.PageRequestManager._instance = new Sys.WebForms.PageRequestManager();
    }
    return prm;
}

Sys.WebForms.PageRequestManager._addArrayElement = function Sys$WebForms$PageRequestManager$_addArrayElement(arrayName) {
    if (!window[arrayName]) {
        // Create array if doesn't already exist
        window[arrayName] = new Array();
    }

    // add the argument list, not counting arrayName
    // note: cannot use Array.addRange or Array.dequeue
    // because 'arguments' is not actually an instance of an Array.
    for (var i = 1, l = arguments.length; i < l; i++) {
        Array.add(window[arrayName], arguments[i]);
    }
}

Sys.WebForms.PageRequestManager._initialize = function Sys$WebForms$PageRequestManager$_initialize(scriptManagerID, formElement) {
    Sys.WebForms.PageRequestManager.getInstance()._initializeInternal(scriptManagerID, formElement);
}

Sys.WebForms.PageRequestManager.registerClass('Sys.WebForms.PageRequestManager');
 
Sys.UI._UpdateProgress = function Sys$UI$_UpdateProgress(element) {
    Sys.UI._UpdateProgress.initializeBase(this,[element]);
    this._displayAfter = 500;
    this._dynamicLayout = true;
    this._associatedUpdatePanelId = null;
    this._beginRequestHandlerDelegate = null;
    this._startDelegate = null;
    this._endRequestHandlerDelegate = null;
    this._pageRequestManager = null;
    this._timerCookie = null;
}

    function Sys$UI$_UpdateProgress$get_displayAfter() {
        /// <value type="Number" locid="P:J#Sys.UI._UpdateProgress.displayAfter"></value>
        if (arguments.length !== 0) throw Error.parameterCount();
        return this._displayAfter;
    }
    function Sys$UI$_UpdateProgress$set_displayAfter(value) {
        var e = Function._validateParams(arguments, [{name: "value", type: Number}]);
        if (e) throw e;
        this._displayAfter = value;
    }
    function Sys$UI$_UpdateProgress$get_dynamicLayout() {
        /// <value type="Boolean" locid="P:J#Sys.UI._UpdateProgress.dynamicLayout"></value>
        if (arguments.length !== 0) throw Error.parameterCount();
        return this._dynamicLayout;
    }
    function Sys$UI$_UpdateProgress$set_dynamicLayout(value) {
        var e = Function._validateParams(arguments, [{name: "value", type: Boolean}]);
        if (e) throw e;
        this._dynamicLayout = value;
    }
    function Sys$UI$_UpdateProgress$get_associatedUpdatePanelId() {
        /// <value type="String" mayBeNull="true" locid="P:J#Sys.UI._UpdateProgress.associatedUpdatePanelId"></value>
        if (arguments.length !== 0) throw Error.parameterCount();
        return this._associatedUpdatePanelId;
    }
    function Sys$UI$_UpdateProgress$set_associatedUpdatePanelId(value) {
        var e = Function._validateParams(arguments, [{name: "value", type: String, mayBeNull: true}]);
        if (e) throw e;
        this._associatedUpdatePanelId = value;
    }
    function Sys$UI$_UpdateProgress$_handleBeginRequest(sender, arg) {
        var curElem = arg.get_postBackElement();
        var showProgress = !this._associatedUpdatePanelId; 
        while (!showProgress && curElem) {
            if (curElem.id && this._associatedUpdatePanelId === curElem.id) {
                showProgress = true; 
            }
            curElem = curElem.parentNode; 
        } 
        if (showProgress) {
            this._timerCookie = window.setTimeout(this._startDelegate, this._displayAfter);
        }
    }
    function Sys$UI$_UpdateProgress$_startRequest() {
        if (this._pageRequestManager.get_isInAsyncPostBack()) {
            if (this._dynamicLayout) this.get_element().style.display = 'block';
            else this.get_element().style.visibility = 'visible';
        }
        this._timerCookie = null;
    }
    function Sys$UI$_UpdateProgress$_handleEndRequest(sender, arg) {
        if (this._dynamicLayout) this.get_element().style.display = 'none';
        else this.get_element().style.visibility = 'hidden';
        if (this._timerCookie) {
            window.clearTimeout(this._timerCookie);
            this._timerCookie = null;
        }
    }
    function Sys$UI$_UpdateProgress$dispose() {
       if (this._pageRequestManager !== null) {
           this._pageRequestManager.remove_beginRequest(this._beginRequestHandlerDelegate);
           this._pageRequestManager.remove_endRequest(this._endRequestHandlerDelegate);
       }
       Sys.UI._UpdateProgress.callBaseMethod(this,"dispose");
    }
    function Sys$UI$_UpdateProgress$initialize() {
        Sys.UI._UpdateProgress.callBaseMethod(this, 'initialize');
    	this._beginRequestHandlerDelegate = Function.createDelegate(this, this._handleBeginRequest);
    	this._endRequestHandlerDelegate = Function.createDelegate(this, this._handleEndRequest);
    	this._startDelegate = Function.createDelegate(this, this._startRequest);
    	if (Sys.WebForms && Sys.WebForms.PageRequestManager) {
           this._pageRequestManager = Sys.WebForms.PageRequestManager.getInstance();
    	}
    	if (this._pageRequestManager !== null ) {
           // Review: should we throw if there's no pageRequestManager
    	    this._pageRequestManager.add_beginRequest(this._beginRequestHandlerDelegate);
    	    this._pageRequestManager.add_endRequest(this._endRequestHandlerDelegate);
    	}
    }
Sys.UI._UpdateProgress.prototype = {
    get_displayAfter: Sys$UI$_UpdateProgress$get_displayAfter,
    set_displayAfter: Sys$UI$_UpdateProgress$set_displayAfter,
    get_dynamicLayout: Sys$UI$_UpdateProgress$get_dynamicLayout,
    set_dynamicLayout: Sys$UI$_UpdateProgress$set_dynamicLayout,
    get_associatedUpdatePanelId: Sys$UI$_UpdateProgress$get_associatedUpdatePanelId,
    set_associatedUpdatePanelId: Sys$UI$_UpdateProgress$set_associatedUpdatePanelId,
    _handleBeginRequest: Sys$UI$_UpdateProgress$_handleBeginRequest,
    _startRequest: Sys$UI$_UpdateProgress$_startRequest,
    _handleEndRequest: Sys$UI$_UpdateProgress$_handleEndRequest,
    dispose: Sys$UI$_UpdateProgress$dispose,
    initialize: Sys$UI$_UpdateProgress$initialize
}
Sys.UI._UpdateProgress.registerClass('Sys.UI._UpdateProgress', Sys.UI.Control);

Type.registerNamespace('Sys.WebForms');
Sys.WebForms.Res={
"PRM_MissingPanel":"Could not find UpdatePanel with ID \u0027{0}\u0027. If it is being updated dynamically then it must be inside another UpdatePanel.",
"PRM_ServerError":"An unknown error occurred while processing the request on the server. The status code returned from the server was: {0}",
"PRM_ParserError":"The message received from the server could not be parsed.",
"PRM_TimeoutError":"The server request timed out.",
"PRM_CannotRegisterTwice":"The PageRequestManager cannot be initialized more than once.",
"PRM_UnknownToken":"Unknown token: \u0027{0}\u0027.",
"PRM_MissingPanel":"Could not find UpdatePanel with ID \u0027{0}\u0027. If it is being updated dynamically then it must be inside another UpdatePanel.",
"PRM_ServerError":"An unknown error occurred while processing the request on the server. The status code returned from the server was: {0}",
"PRM_ParserError":"The message received from the server could not be parsed. Common causes for this error are when the response is modified by calls to Response.Write(), response filters, HttpModules, or server trace is enabled.\r\nDetails: {0}",
"PRM_TimeoutError":"The server request timed out.",
"PRM_ParserErrorDetails":"Error parsing near \u0027{0}\u0027.",
"PRM_CannotRegisterTwice":"The PageRequestManager cannot be initialized more than once."
};

if(typeof(Sys)!=='undefined')Sys.Application.notifyScriptLoaded();