text: /*
   * D:/Development/XNAT/1.6/xnat_builder_1_6dev/plugin-resources/webapp/xnat/scripts/yui/build/connection/connection-debug.js
   * XNAT http://www.xnat.org
   * Copyright (c) 2014, Washington University School of Medicine
   * All Rights Reserved
   *
   * Released under the Simplified BSD.
   *
   * Last modified 7/1/13 9:12 AM
   */
  
  
  
  /**
   * The Connection Manager singleton provides methods for creating and managing
   * asynchronous transactions.
   *
   * @class Connect
   */
  
  YAHOO.util.Connect =
  {
    /**
     * @description Array of MSFT ActiveX ids for XMLHttpRequest.
     * @property _msxml_progid
     * @private
     * @static
     * @type array
     */
  	_msxml_progid:[
  		'Microsoft.XMLHTTP',
  		'MSXML2.XMLHTTP.3.0',
  		'MSXML2.XMLHTTP'
  		],
  
    /**
     * @description Object literal of HTTP header(s)
     * @property _http_header
     * @private
     * @static
     * @type object
     */
  	_http_headers:{},
  
    /**
     * @description Determines if HTTP headers are set.
     * @property _has_http_headers
     * @private
     * @static
     * @type boolean
     */
  	_has_http_headers:false,
  
   /**
    * @description Determines if a default header of
    * Content-Type of 'application/x-www-form-urlencoded'
    * will be added to any client HTTP headers sent for POST
    * transactions.
    * @property _use_default_post_header
    * @private
    * @static
    * @type boolean
    */
      _use_default_post_header:true,
  
   /**
    * @description The default header used for POST transactions.
    * @property _default_post_header
    * @private
    * @static
    * @type boolean
    */
      _default_post_header:'application/x-www-form-urlencoded; charset=UTF-8',
  
   /**
    * @description The default header used for transactions involving the
    * use of HTML forms.
    * @property _default_form_header
    * @private
    * @static
    * @type boolean
    */
      _default_form_header:'application/x-www-form-urlencoded',
  
   /**
    * @description Determines if a default header of
    * 'X-Requested-With: XMLHttpRequest'
    * will be added to each transaction.
    * @property _use_default_xhr_header
    * @private
    * @static
    * @type boolean
    */
      _use_default_xhr_header:true,
  
   /**
    * @description The default header value for the label
    * "X-Requested-With".  This is sent with each
    * transaction, by default, to identify the
    * request as being made by YUI Connection Manager.
    * @property _default_xhr_header
    * @private
    * @static
    * @type boolean
    */
      _default_xhr_header:'XMLHttpRequest',
  
   /**
    * @description Determines if custom, default headers
    * are set for each transaction.
    * @property _has_default_header
    * @private
    * @static
    * @type boolean
    */
      _has_default_headers:true,
  
   /**
    * @description Determines if custom, default headers
    * are set for each transaction.
    * @property _has_default_header
    * @private
    * @static
    * @type boolean
    */
      _default_headers:{},
  
   /**
    * @description Collection of polling references to the polling mechanism in handleReadyState.
    * @property _poll
    * @private
    * @static
    * @type object
    */
      _poll:{},
  
   /**
    * @description Queue of timeout values for each transaction callback with a defined timeout value.
    * @property _timeOut
    * @private
    * @static
    * @type object
    */
      _timeOut:{},
  
    /**
     * @description The polling frequency, in milliseconds, for HandleReadyState.
     * when attempting to determine a transaction's XHR readyState.
     * The default is 50 milliseconds.
     * @property _polling_interval
     * @private
     * @static
     * @type int
     */
       _polling_interval:50,
  
    /**
     * @description A transaction counter that increments the transaction id for each transaction.
     * @property _transaction_id
     * @private
     * @static
     * @type int
     */
       _transaction_id:0,
  
    /**
     * @description Custom event that fires at the start of a transaction
     * @property startEvent
     * @private
     * @static
     * @type CustomEvent
     */
  	startEvent: new YAHOO.util.CustomEvent('start'),
  
    /**
     * @description Custom event that fires when a transaction response has completed.
     * @property completeEvent
     * @private
     * @static
     * @type CustomEvent
     */
  	completeEvent: new YAHOO.util.CustomEvent('complete'),
  
    /**
     * @description Custom event that fires when handleTransactionResponse() determines a
     * response in the HTTP 2xx range.
     * @property successEvent
     * @private
     * @static
     * @type CustomEvent
     */
  	successEvent: new YAHOO.util.CustomEvent('success'),
  
    /**
     * @description Custom event that fires when handleTransactionResponse() determines a
     * response in the HTTP 4xx/5xx range.
     * @property failureEvent
     * @private
     * @static
     * @type CustomEvent
     */
  	failureEvent: new YAHOO.util.CustomEvent('failure'),
  
    /**
     * @description Custom event that fires when a transaction is successfully aborted.
     * @property abortEvent
     * @private
     * @static
     * @type CustomEvent
     */
  	abortEvent: new YAHOO.util.CustomEvent('abort'),
  
    /**
     * @description A reference table that maps callback custom events members to its specific
     * event name.
     * @property _customEvents
     * @private
     * @static
     * @type object
     */
  	_customEvents:
  	{
  		onStart:['startEvent', 'start'],
  		onComplete:['completeEvent', 'complete'],
  		onSuccess:['successEvent', 'success'],
  		onFailure:['failureEvent', 'failure'],
  		onUpload:['uploadEvent', 'upload'],
  		onAbort:['abortEvent', 'abort']
  	},
  
    /**
     * @description Member to add an ActiveX id to the existing xml_progid array.
     * In the event(unlikely) a new ActiveX id is introduced, it can be added
     * without internal code modifications.
     * @method setProgId
     * @public
     * @static
     * @param {string} id The ActiveX id to be added to initialize the XHR object.
     * @return void
     */
  	setProgId:function(id)
  	{
  		this._msxml_progid.unshift(id);
  		YAHOO.log('ActiveX Program Id  ' + id + ' added to _msxml_progid.', 'info', 'Connection');
  	},
  
    /**
     * @description Member to override the default POST header.
     * @method setDefaultPostHeader
     * @public
     * @static
     * @param {boolean} b Set and use default header - true or false .
     * @return void
     */
  	setDefaultPostHeader:function(b)
  	{
  		if(typeof b == 'string'){
  			this._default_post_header = b;
  			YAHOO.log('Default POST header set to  ' + b, 'info', 'Connection');
  		}
  		else if(typeof b == 'boolean'){
  			this._use_default_post_header = b;
  		}
  	},
  
    /**
     * @description Member to override the default transaction header..
     * @method setDefaultXhrHeader
     * @public
     * @static
     * @param {boolean} b Set and use default header - true or false .
     * @return void
     */
  	setDefaultXhrHeader:function(b)
  	{
  		if(typeof b == 'string'){
  			this._default_xhr_header = b;
  			YAHOO.log('Default XHR header set to  ' + b, 'info', 'Connection');
  		}
  		else{
  			this._use_default_xhr_header = b;
  		}
  	},
  
    /**
     * @description Member to modify the default polling interval.
     * @method setPollingInterval
     * @public
     * @static
     * @param {int} i The polling interval in milliseconds.
     * @return void
     */
  	setPollingInterval:function(i)
  	{
  		if(typeof i == 'number' && isFinite(i)){
  			this._polling_interval = i;
  			YAHOO.log('Default polling interval set to ' + i +'ms', 'info', 'Connection');
  		}
  	},
  
    /**
     * @description Instantiates a XMLHttpRequest object and returns an object with two properties:
     * the XMLHttpRequest instance and the transaction id.
     * @method createXhrObject
     * @private
     * @static
     * @param {int} transactionId Property containing the transaction id for this transaction.
     * @return object
     */
  	createXhrObject:function(transactionId)
  	{
  		var obj,http,i;
  		try
  		{
  			// Instantiates XMLHttpRequest in non-IE browsers and assigns to http.
  			http = new XMLHttpRequest();
  			//  Object literal with http and tId properties
  			obj = { conn:http, tId:transactionId, xhr: true };
  			YAHOO.log('XHR object created for transaction ' + transactionId, 'info', 'Connection');
  		}
  		catch(e)
  		{
  			for(i=0; i<this._msxml_progid.length; ++i){
  				try
  				{
  					// Instantiates XMLHttpRequest for IE and assign to http
  					http = new ActiveXObject(this._msxml_progid[i]);
  					//  Object literal with conn and tId properties
  					obj = { conn:http, tId:transactionId, xhr: true };
  					YAHOO.log('ActiveX XHR object created for transaction ' + transactionId, 'info', 'Connection');
  					break;
  				}
  				catch(e1){}
  			}
  		}
  		finally
  		{
  			return obj;
  		}
  	},
  
    /**
     * @description This method is called by asyncRequest to create a
     * valid connection object for the transaction.  It also passes a
     * transaction id and increments the transaction id counter.
     * @method getConnectionObject
     * @private
     * @static
     * @return {object}
     */
  	getConnectionObject:function(t)
  	{
  		var o, tId = this._transaction_id;
  
  		try
  		{
  			if(!t){
  				o = this.createXhrObject(tId);
  			}
  			else{
  				o = {tId:tId};
  				if(t==='xdr'){
  					o.conn = this._transport;
  					o.xdr = true;
  				}
  				else if(t==='upload'){
  					o.upload = true;
  				}
  			}
  
  			if(o){
  				this._transaction_id++;
  			}
  		}
  		catch(e){}
  			return o;
  	},
  
    /**
     * @description Method for initiating an asynchronous request via the XHR object.
     * @method asyncRequest
     * @public
     * @static
     * @param {string} method HTTP transaction method
     * @param {string} uri Fully qualified path of resource
     * @param {callback} callback User-defined callback function or object
     * @param {string} postData POST body
     * @return {object} Returns the connection object
     */
  	asyncRequest:function(method, uri, callback, postData)
  	{
  		var o,t,args = (callback && callback.argument)?callback.argument:null;
  
  		if(this._isFileUpload){
  			t = 'upload';
  		}
  		else if(callback.xdr){
  			t = 'xdr';
  		}
  
  		o = this.getConnectionObject(t);
  		if(!o){
  			YAHOO.log('Unable to create connection object.', 'error', 'Connection');
  			return null;
  		}
  		else{
  
  			// Intialize any transaction-specific custom events, if provided.
  			if(callback && callback.customevents){
  				this.initCustomEvents(o, callback);
  			}
  
  			if(this._isFormSubmit){
  				if(this._isFileUpload){
  					this.uploadFile(o, callback, uri, postData);
  					return o;
  				}
  
  				// If the specified HTTP method is GET, setForm() will return an
  				// encoded string that is concatenated to the uri to
  				// create a querystring.
  				if(method.toUpperCase() == 'GET'){
  					if(this._sFormData.length !== 0){
  						// If the URI already contains a querystring, append an ampersand
  						// and then concatenate _sFormData to the URI.
  						uri += ((uri.indexOf('?') == -1)?'?':'&') + this._sFormData;
  					}
  				}
  				else if(method.toUpperCase() == 'POST'){
  					// If POST data exist in addition to the HTML form data,
  					// it will be concatenated to the form data.
  					postData = postData?this._sFormData + "&" + postData:this._sFormData;
  				}
  			}
  
  			if(method.toUpperCase() == 'GET' && (callback && callback.cache === false)){
  				// If callback.cache is defined and set to false, a
  				// timestamp value will be added to the querystring.
  				uri += ((uri.indexOf('?') == -1)?'?':'&') + "rnd=" + new Date().valueOf().toString();
  			}
  
  			// Each transaction will automatically include a custom header of
  			// "X-Requested-With: XMLHttpRequest" to identify the request as
  			// having originated from Connection Manager.
  			if(this._use_default_xhr_header){
  				if(!this._default_headers['X-Requested-With']){
  					this.initHeader('X-Requested-With', this._default_xhr_header, true);
  					YAHOO.log('Initialize transaction header X-Request-Header to XMLHttpRequest.', 'info', 'Connection');
  				}
  			}
  
  			//If the transaction method is POST and the POST header value is set to true
  			//or a custom value, initalize the Content-Type header to this value.
  			if((method.toUpperCase() === 'POST' && this._use_default_post_header) && this._isFormSubmit === false){
  				this.initHeader('Content-Type', this._default_post_header);
  				YAHOO.log('Initialize header Content-Type to application/x-www-form-urlencoded; UTF-8 for POST transaction.', 'info', 'Connection');
  			}
  
  			if(o.xdr){
  				this.xdr(o, method, uri, callback, postData);
  				return o;
  			}
  
  			o.conn.open(method, uri, true);
  			//Initialize all default and custom HTTP headers,
  			if(this._has_default_headers || this._has_http_headers){
  				this.setHeader(o);
  			}
  
  			this.handleReadyState(o, callback);
  			o.conn.send(postData || '');
  			YAHOO.log('Transaction ' + o.tId + ' sent.', 'info', 'Connection');
  
  
  			// Reset the HTML form data and state properties as
  			// soon as the data are submitted.
  			if(this._isFormSubmit === true){
  				this.resetFormState();
  			}
  
  			// Fire global custom event -- startEvent
  			this.startEvent.fire(o, args);
  
  			if(o.startEvent){
  				// Fire transaction custom event -- startEvent
  				o.startEvent.fire(o, args);
  			}
  
  			return o;
  		}
  	},
  
    /**
     * @description This method creates and subscribes custom events,
     * specific to each transaction
     * @method initCustomEvents
     * @private
     * @static
     * @param {object} o The connection object
     * @param {callback} callback The user-defined callback object
     * @return {void}
     */
  	initCustomEvents:function(o, callback)
  	{
  		var prop;
  		// Enumerate through callback.customevents members and bind/subscribe
  		// events that match in the _customEvents table.
  		for(prop in callback.customevents){
  			if(this._customEvents[prop][0]){
  				// Create the custom event
  				o[this._customEvents[prop][0]] = new YAHOO.util.CustomEvent(this._customEvents[prop][1], (callback.scope)?callback.scope:null);
  				YAHOO.log('Transaction-specific Custom Event ' + o[this._customEvents[prop][1]] + ' created.', 'info', 'Connection');
  
  				// Subscribe the custom event
  				o[this._customEvents[prop][0]].subscribe(callback.customevents[prop]);
  				YAHOO.log('Transaction-specific Custom Event ' + o[this._customEvents[prop][1]] + ' subscribed.', 'info', 'Connection');
  			}
  		}
  	},
  
    /**
     * @description This method serves as a timer that polls the XHR object's readyState
     * property during a transaction, instead of binding a callback to the
     * onreadystatechange event.  Upon readyState 4, handleTransactionResponse
     * will process the response, and the timer will be cleared.
     * @method handleReadyState
     * @private
     * @static
     * @param {object} o The connection object
     * @param {callback} callback The user-defined callback object
     * @return {void}
     */
  
      handleReadyState:function(o, callback)
  
      {
  		var oConn = this,
  			args = (callback && callback.argument)?callback.argument:null;
  
  		if(callback && callback.timeout){
  			this._timeOut[o.tId] = window.setTimeout(function(){ oConn.abort(o, callback, true); }, callback.timeout);
  		}
  
  		this._poll[o.tId] = window.setInterval(
  			function(){
  				if(o.conn && o.conn.readyState === 4){
  
  					// Clear the polling interval for the transaction
  					// and remove the reference from _poll.
  					window.clearInterval(oConn._poll[o.tId]);
  					delete oConn._poll[o.tId];
  
  					if(callback && callback.timeout){
  						window.clearTimeout(oConn._timeOut[o.tId]);
  						delete oConn._timeOut[o.tId];
  					}
  
  					// Fire global custom event -- completeEvent
  					oConn.completeEvent.fire(o, args);
  
  					if(o.completeEvent){
  						// Fire transaction custom event -- completeEvent
  						o.completeEvent.fire(o, args);
  					}
  
  					oConn.handleTransactionResponse(o, callback);
  				}
  			}
  		,this._polling_interval);
      },
  
    /**
     * @description This method attempts to interpret the server response and
     * determine whether the transaction was successful, or if an error or
     * exception was encountered.
     * @method handleTransactionResponse
     * @private
     * @static
     * @param {object} o The connection object
     * @param {object} callback The user-defined callback object
     * @param {boolean} isAbort Determines if the transaction was terminated via abort().
     * @return {void}
     */
      handleTransactionResponse:function(o, callback, isAbort)
      {
  		var httpStatus, responseObject,
  			args = (callback && callback.argument)?callback.argument:null,
  			xdrS = (o.r && o.r.statusText === 'xdr:success')?true:false,
  			xdrF = (o.r && o.r.statusText === 'xdr:failure')?true:false,
  			xdrA = isAbort;
  
  		try
  		{
  			if((o.conn.status !== undefined && o.conn.status !== 0) || xdrS){
  				// XDR requests will not have HTTP status defined. The
  				// statusText property will define the response status
  				// set by the Flash transport.
  				httpStatus = o.conn.status;
  			}
  			else if(xdrF && !xdrA){
  				// Set XDR transaction failure to a status of 0, which
  				// resolves as an HTTP failure, instead of an exception.
  				httpStatus = 0;
  			}
  			else{
  				httpStatus = 13030;
  			}
  		}
  		catch(e){
  
  			 // 13030 is a custom code to indicate the condition -- in Mozilla/FF --
  			 // when the XHR object's status and statusText properties are
  			 // unavailable, and a query attempt throws an exception.
  			httpStatus = 13030;
  		}
  
  		if((httpStatus >= 200 && httpStatus < 300) || httpStatus === 1223 || xdrS){
  			responseObject = o.xdr ? o.r : this.createResponseObject(o, args);
  			if(callback && callback.success){
  				if(!callback.scope){
  					callback.success(responseObject);
  					YAHOO.log('Success callback. HTTP code is ' + httpStatus, 'info', 'Connection');
  				}
  				else{
  					// If a scope property is defined, the callback will be fired from
  					// the context of the object.
  					callback.success.apply(callback.scope, [responseObject]);
  					YAHOO.log('Success callback with scope. HTTP code is ' + httpStatus, 'info', 'Connection');
  				}
  			}
  
  			// Fire global custom event -- successEvent
  			this.successEvent.fire(responseObject);
  
  			if(o.successEvent){
  				// Fire transaction custom event -- successEvent
  				o.successEvent.fire(responseObject);
  			}
  		}
  		else{
  			switch(httpStatus){
  				// The following cases are wininet.dll error codes that may be encountered.
  				case 12002: // Server timeout
  				case 12029: // 12029 to 12031 correspond to dropped connections.
  				case 12030:
  				case 12031:
  				case 12152: // Connection closed by server.
  				case 13030: // See above comments for variable status.
  					// XDR transactions will not resolve to this case, since the
  					// response object is already built in the xdr response.
  					responseObject = this.createExceptionObject(o.tId, args, (isAbort?isAbort:false));
  					if(callback && callback.failure){
  						if(!callback.scope){
  							callback.failure(responseObject);
  							YAHOO.log('Failure callback. Exception detected. Status code is ' + httpStatus, 'warn', 'Connection');
  						}
  						else{
  							callback.failure.apply(callback.scope, [responseObject]);
  							YAHOO.log('Failure callback with scope. Exception detected. Status code is ' + httpStatus, 'warn', 'Connection');
  						}
  					}
  
  					break;
  				default:
  					responseObject = (o.xdr) ? o.response : this.createResponseObject(o, args);
  					if(callback && callback.failure){
  						if(!callback.scope){
  							callback.failure(responseObject);
  							YAHOO.log('Failure callback. HTTP status code is ' + httpStatus, 'warn', 'Connection');
  						}
  						else{
  							callback.failure.apply(callback.scope, [responseObject]);
  							YAHOO.log('Failure callback with scope. HTTP status code is ' + httpStatus, 'warn', 'Connection');
  						}
  					}
  			}
  
  			// Fire global custom event -- failureEvent
  			this.failureEvent.fire(responseObject);
  
  			if(o.failureEvent){
  				// Fire transaction custom event -- failureEvent
  				o.failureEvent.fire(responseObject);
  			}
  
  		}
  
  		this.releaseObject(o);
  		responseObject = null;
      },
  
    /**
     * @description This method evaluates the server response, creates and returns the results via
     * its properties.  Success and failure cases will differ in the response
     * object's property values.
     * @method createResponseObject
     * @private
     * @static
     * @param {object} o The connection object
     * @param {callbackArg} callbackArg The user-defined argument or arguments to be passed to the callback
     * @return {object}
     */
      createResponseObject:function(o, callbackArg)
      {
  		var obj = {}, headerObj = {},
  			i, headerStr, header, delimitPos;
  
  		try
  		{
  			headerStr = o.conn.getAllResponseHeaders();
  			header = headerStr.split('\n');
  			for(i=0; i<header.length; i++){
  				delimitPos = header[i].indexOf(':');
  				if(delimitPos != -1){
  					headerObj[header[i].substring(0,delimitPos)] = YAHOO.lang.trim(header[i].substring(delimitPos+2));
  				}
  			}
  		}
  		catch(e){}
  
  		obj.tId = o.tId;
  		// Normalize IE's response to HTTP 204 when Win error 1223.
  		obj.status = (o.conn.status == 1223)?204:o.conn.status;
  		// Normalize IE's statusText to "No Content" instead of "Unknown".
  		obj.statusText = (o.conn.status == 1223)?"No Content":o.conn.statusText;
  		obj.getResponseHeader = headerObj;
  		obj.getAllResponseHeaders = headerStr;
  		obj.responseText = o.conn.responseText;
  		obj.responseXML = o.conn.responseXML;
  
  		if(callbackArg){
  			obj.argument = callbackArg;
  		}
  
  		return obj;
      },
  
    /**
     * @description If a transaction cannot be completed due to dropped or closed connections,
     * there may be not be enough information to build a full response object.
     * The failure callback will be fired and this specific condition can be identified
     * by a status property value of 0.
     *
     * If an abort was successful, the status property will report a value of -1.
     *
     * @method createExceptionObject
     * @private
     * @static
     * @param {int} tId The Transaction Id
     * @param {callbackArg} callbackArg The user-defined argument or arguments to be passed to the callback
     * @param {boolean} isAbort Determines if the exception case is caused by a transaction abort
     * @return {object}
     */
      createExceptionObject:function(tId, callbackArg, isAbort)
      {
  		var COMM_CODE = 0,
  			COMM_ERROR = 'communication failure',
  			ABORT_CODE = -1,
  			ABORT_ERROR = 'transaction aborted',
  			obj = {};
  
  		obj.tId = tId;
  		if(isAbort){
  			obj.status = ABORT_CODE;
  			obj.statusText = ABORT_ERROR;
  		}
  		else{
  			obj.status = COMM_CODE;
  			obj.statusText = COMM_ERROR;
  		}
  
  		if(callbackArg){
  			obj.argument = callbackArg;
  		}
  
  		return obj;
      },
  
    /**
     * @description Method that initializes the custom HTTP headers for the each transaction.
     * @method initHeader
     * @public
     * @static
     * @param {string} label The HTTP header label
     * @param {string} value The HTTP header value
     * @param {string} isDefault Determines if the specific header is a default header
     * automatically sent with each transaction.
     * @return {void}
     */
  	initHeader:function(label, value, isDefault)
  	{
  		var headerObj = (isDefault)?this._default_headers:this._http_headers;
  
  		headerObj[label] = value;
  		if(isDefault){
  			this._has_default_headers = true;
  		}
  		else{
  			this._has_http_headers = true;
  		}
  	},
  
  
    /**
     * @description Accessor that sets the HTTP headers for each transaction.
     * @method setHeader
     * @private
     * @static
     * @param {object} o The connection object for the transaction.
     * @return {void}
     */
  	setHeader:function(o)
  	{
  		var prop;
  		if(this._has_default_headers){
  			for(prop in this._default_headers){
  				if(YAHOO.lang.hasOwnProperty(this._default_headers, prop)){
  					o.conn.setRequestHeader(prop, this._default_headers[prop]);
  					YAHOO.log('Default HTTP header ' + prop + ' set with value of ' + this._default_headers[prop], 'info', 'Connection');
  				}
  			}
  		}
  
  		if(this._has_http_headers){
  			for(prop in this._http_headers){
  				if(YAHOO.lang.hasOwnProperty(this._http_headers, prop)){
  					o.conn.setRequestHeader(prop, this._http_headers[prop]);
  					YAHOO.log('HTTP header ' + prop + ' set with value of ' + this._http_headers[prop], 'info', 'Connection');
  				}
  			}
  
  			this._http_headers = {};
  			this._has_http_headers = false;
  		}
  	},
  
    /**
     * @description Resets the default HTTP headers object
     * @method resetDefaultHeaders
     * @public
     * @static
     * @return {void}
     */
  	resetDefaultHeaders:function(){
  		this._default_headers = {};
  		this._has_default_headers = false;
  	},
  
    /**
     * @description Method to terminate a transaction, if it has not reached readyState 4.
     * @method abort
     * @public
     * @static
     * @param {object} o The connection object returned by asyncRequest.
     * @param {object} callback  User-defined callback object.
     * @param {string} isTimeout boolean to indicate if abort resulted from a callback timeout.
     * @return {boolean}
     */
  	abort:function(o, callback, isTimeout)
  	{
  		var abortStatus,
  			args = (callback && callback.argument)?callback.argument:null;
  			o = o || {};
  
  		if(o.conn){
  			if(o.xhr){
  				if(this.isCallInProgress(o)){
  					// Issue abort request
  					o.conn.abort();
  
  					window.clearInterval(this._poll[o.tId]);
  					delete this._poll[o.tId];
  
  					if(isTimeout){
  						window.clearTimeout(this._timeOut[o.tId]);
  						delete this._timeOut[o.tId];
  					}
  
  					abortStatus = true;
  				}
  			}
  			else if(o.xdr){
  				o.conn.abort(o.tId);
  				abortStatus = true;
  			}
  		}
  		else if(o.upload){
  			var frameId = 'yuiIO' + o.tId;
  			var io = document.getElementById(frameId);
  
  			if(io){
  				// Remove all listeners on the iframe prior to
  				// its destruction.
  				YAHOO.util.Event.removeListener(io, "load");
  				// Destroy the iframe facilitating the transaction.
  				document.body.removeChild(io);
  				YAHOO.log('File upload iframe destroyed. Id is:' + frameId, 'info', 'Connection');
  
  				if(isTimeout){
  					window.clearTimeout(this._timeOut[o.tId]);
  					delete this._timeOut[o.tId];
  				}
  
  				abortStatus = true;
  			}
  		}
  		else{
  			abortStatus = false;
  		}
  
  		if(abortStatus === true){
  			// Fire global custom event -- abortEvent
  			this.abortEvent.fire(o, args);
  
  			if(o.abortEvent){
  				// Fire transaction custom event -- abortEvent
  				o.abortEvent.fire(o, args);
  			}
  
  			this.handleTransactionResponse(o, callback, true);
  			YAHOO.log('Transaction ' + o.tId + ' aborted.', 'info', 'Connection');
  		}
  
  		return abortStatus;
  	},
  
    /**
     * @description Determines if the transaction is still being processed.
     * @method isCallInProgress
     * @public
     * @static
     * @param {object} o The connection object returned by asyncRequest
     * @return {boolean}
     */
  	isCallInProgress:function(o)
  	{
  		o = o || {};
  		// if the XHR object assigned to the transaction has not been dereferenced,
  		// then check its readyState status.  Otherwise, return false.
  		if(o.xhr && o.conn){
  			return o.conn.readyState !== 4 && o.conn.readyState !== 0;
  		}
  		else if(o.xdr && o.conn){
  			return o.conn.isCallInProgress(o.tId);
  		}
  		else if(o.upload === true){
  			return document.getElementById('yuiIO' + o.tId)?true:false;
  		}
  		else{
  			return false;
  		}
  	},
  
    /**
     * @description Dereference the XHR instance and the connection object after the transaction is completed.
     * @method releaseObject
     * @private
     * @static
     * @param {object} o The connection object
     * @return {void}
     */
  	releaseObject:function(o)
  	{
  		if(o && o.conn){
  			//dereference the XHR instance.
  			o.conn = null;
  
  			YAHOO.log('Connection object for transaction ' + o.tId + ' destroyed.', 'info', 'Connection');
  
  			//dereference the connection object.
  			o = null;
  		}
  	}
  };
  
  /**
    * @for Connect
    */
  (function() {
  	var YCM = YAHOO.util.Connect, _fn = {};
  
     /**
      * @description This method creates and instantiates the Flash transport.
      * @method _swf
      * @private
      * @static
      * @param {string} URI to connection.swf.
      * @return {void}
      */
  	function _swf(uri) {
  		var o = '<object id="YUIConnectionSwf" type="application/x-shockwave-flash" data="' +
  		        uri + '" width="0" height="0">' +
  		     	'<param name="movie" value="' + uri + '">' +
                  '<param name="allowScriptAccess" value="always">' +
  		    	'</object>',
  		    c = document.createElement('div');
  
  		document.body.appendChild(c);
  		c.innerHTML = o;
  	}
  
     /**
      * @description This method calls the public method on the
      * Flash transport to start the XDR transaction.  It is analogous
      * to Connection Manager's asyncRequest method.
      * @method xdr
      * @private
      * @static
      * @param {object} The transaction object.
      * @param {string} HTTP request method.
      * @param {string} URI for the transaction.
      * @param {object} The transaction's callback object.
      * @param {object} The JSON object used as HTTP POST data.
      * @return {void}
      */
  	function _xdr(o, m, u, c, d) {
  		_fn[parseInt(o.tId)] = { 'o':o, 'c':c };
  		if (d) {
  			c.method = m;
  			c.data = d;
  		}
  
  		o.conn.send(u, c, o.tId);
  	}
  
     /**
      * @description This method instantiates the Flash transport and
      * establishes a static reference to it, used for all XDR requests.
      * @method transport
      * @public
      * @static
      * @param {string} URI to connection.swf.
      * @return {void}
      */
  	function _init(uri) {
  		_swf(uri);
  		YCM._transport = document.getElementById('YUIConnectionSwf');
  	}
  
  	function _xdrReady() {
  		YCM.xdrReadyEvent.fire();
  	}
  
     /**
      * @description This method fires the global and transaction start
      * events.
      * @method _xdrStart
      * @private
      * @static
      * @param {object} The transaction object.
      * @param {string} The transaction's callback object.
      * @return {void}
      */
  	function _xdrStart(o, cb) {
  		if (o) {
  			// Fire global custom event -- startEvent
  			YCM.startEvent.fire(o, cb.argument);
  
  			if(o.startEvent){
  				// Fire transaction custom event -- startEvent
  				o.startEvent.fire(o, cb.argument);
  			}
  		}
  	}
  
     /**
      * @description This method is the initial response handler
      * for XDR transactions.  The Flash transport calls this
      * function and sends the response payload.
      * @method handleXdrResponse
      * @private
      * @static
      * @param {object} The response object sent from the Flash transport.
      * @return {void}
      */
  	function _handleXdrResponse(r) {
  		var o = _fn[r.tId].o,
  			cb = _fn[r.tId].c;
  
  		if (r.statusText === 'xdr:start') {
  			_xdrStart(o, cb);
  			return;
  		}
  
  		r.responseText = decodeURI(r.responseText);
  		o.r = r;
  		if (cb.argument) {
  			o.r.argument = cb.argument;
  		}
  
  		this.handleTransactionResponse(o, cb, r.statusText === 'xdr:abort' ? true : false);
  		delete _fn[r.tId];
  	}
  
  	// Bind the functions to Connection Manager as static fields.
  	YCM.xdr = _xdr;
  	YCM.swf = _swf;
  	YCM.transport = _init;
  	YCM.xdrReadyEvent = new YAHOO.util.CustomEvent('xdrReady');
  	YCM.xdrReady = _xdrReady;
  	YCM.handleXdrResponse = _handleXdrResponse;
  })();
  
  /**
    * @for Connect
    */
  (function(){
  	var YCM = YAHOO.util.Connect,
  		YE = YAHOO.util.Event;
     /**
  	* @description Property modified by setForm() to determine if the data
  	* should be submitted as an HTML form.
  	* @property _isFormSubmit
  	* @private
  	* @static
  	* @type boolean
  	*/
  	YCM._isFormSubmit = false;
  
     /**
  	* @description Property modified by setForm() to determine if a file(s)
  	* upload is expected.
  	* @property _isFileUpload
  	* @private
  	* @static
  	* @type boolean
  	*/
  	YCM._isFileUpload = false;
  
     /**
  	* @description Property modified by setForm() to set a reference to the HTML
  	* form node if the desired action is file upload.
  	* @property _formNode
  	* @private
  	* @static
  	* @type object
  	*/
  	YCM._formNode = null;
  
     /**
  	* @description Property modified by setForm() to set the HTML form data
  	* for each transaction.
  	* @property _sFormData
  	* @private
  	* @static
  	* @type string
  	*/
  	YCM._sFormData = null;
  
     /**
  	* @description Tracks the name-value pair of the "clicked" submit button if multiple submit
  	* buttons are present in an HTML form; and, if YAHOO.util.Event is available.
  	* @property _submitElementValue
  	* @private
  	* @static
  	* @type string
  	*/
  	YCM._submitElementValue = null;
  
     /**
      * @description Custom event that fires when handleTransactionResponse() determines a
      * response in the HTTP 4xx/5xx range.
      * @property failureEvent
      * @private
      * @static
      * @type CustomEvent
      */
  	YCM.uploadEvent = new YAHOO.util.CustomEvent('upload'),
  
     /**
  	* @description Determines whether YAHOO.util.Event is available and returns true or false.
  	* If true, an event listener is bound at the document level to trap click events that
  	* resolve to a target type of "Submit".  This listener will enable setForm() to determine
  	* the clicked "Submit" value in a multi-Submit button, HTML form.
  	* @property _hasSubmitListener
  	* @private
  	* @static
  	*/
  	YCM._hasSubmitListener = function() {
  		if(YE){
  			YE.addListener(
  				document,
  				'click',
  				function(e){
  					var obj = YE.getTarget(e),
  						name = obj.nodeName.toLowerCase();
  
  					if((name === 'input' || name === 'button') && (obj.type && obj.type.toLowerCase() == 'submit')){
  						YCM._submitElementValue = encodeURIComponent(obj.name) + "=" + encodeURIComponent(obj.value);
  					}
  				});
  			return true;
  		}
  		return false;
  	}();
  
    /**
     * @description This method assembles the form label and value pairs and
     * constructs an encoded string.
     * asyncRequest() will automatically initialize the transaction with a
     * a HTTP header Content-Type of application/x-www-form-urlencoded.
     * @method setForm
     * @public
     * @static
     * @param {string || object} form id or name attribute, or form object.
     * @param {boolean} optional enable file upload.
     * @param {boolean} optional enable file upload over SSL in IE only.
     * @return {string} string of the HTML form field name and value pairs..
     */
  	function _setForm(formId, isUpload, secureUri)
  	{
  		var oForm, oElement, oName, oValue, oDisabled,
  			hasSubmit = false,
  			data = [], item = 0,
  			i,len,j,jlen,opt;
  
  		this.resetFormState();
  
  		if(typeof formId == 'string'){
  			// Determine if the argument is a form id or a form name.
  			// Note form name usage is deprecated by supported
  			// here for legacy reasons.
  			oForm = (document.getElementById(formId) || document.forms[formId]);
  		}
  		else if(typeof formId == 'object'){
  			// Treat argument as an HTML form object.
  			oForm = formId;
  		}
  		else{
  			YAHOO.log('Unable to create form object ' + formId, 'warn', 'Connection');
  			return;
  		}
  
  		// If the isUpload argument is true, setForm will call createFrame to initialize
  		// an iframe as the form target.
  		//
  		// The argument secureURI is also required by IE in SSL environments
  		// where the secureURI string is a fully qualified HTTP path, used to set the source
  		// of the iframe, to a stub resource in the same domain.
  		if(isUpload){
  
  			// Create iframe in preparation for file upload.
  			this.createFrame(secureUri?secureUri:null);
  
  			// Set form reference and file upload properties to true.
  			this._isFormSubmit = true;
  			this._isFileUpload = true;
  			this._formNode = oForm;
  
  			return;
  
  		}
  
  		// Iterate over the form elements collection to construct the
  		// label-value pairs.
  		for (i=0,len=oForm.elements.length; i<len; ++i){
  			oElement = oForm.elements[i];
  			oDisabled = oElement.disabled;
  			oName = oElement.name;
  
  			// Do not submit fields that are disabled or
  			// do not have a name attribute value.
  			if(!oDisabled && oName)
  			{
  				oName  = encodeURIComponent(oName)+'=';
  				oValue = encodeURIComponent(oElement.value);
  
  				switch(oElement.type)
  				{
  					// Safari, Opera, FF all default opt.value from .text if
  					// value attribute not specified in markup
  					case 'select-one':
  						if (oElement.selectedIndex > -1) {
  							opt = oElement.options[oElement.selectedIndex];
  							data[item++] = oName + encodeURIComponent(
  								(opt.attributes.value && opt.attributes.value.specified) ? opt.value : opt.text);
  								}
  						break;
  					case 'select-multiple':
  						if (oElement.selectedIndex > -1) {
  							for(j=oElement.selectedIndex, jlen=oElement.options.length; j<jlen; ++j){
  								opt = oElement.options[j];
  								if (opt.selected) {
  									data[item++] = oName + encodeURIComponent(
  										(opt.attributes.value && opt.attributes.value.specified) ? opt.value : opt.text);
  								}
  							}
  						}
  						break;
  					case 'radio':
  					case 'checkbox':
  						if(oElement.checked){
  							data[item++] = oName + oValue;
  						}
  						break;
  					case 'file':
  						// stub case as XMLHttpRequest will only send the file path as a string.
  					case undefined:
  						// stub case for fieldset element which returns undefined.
  					case 'reset':
  						// stub case for input type reset button.
  					case 'button':
  						// stub case for input type button elements.
  						break;
  					case 'submit':
  						if(hasSubmit === false){
  							if(this._hasSubmitListener && this._submitElementValue){
  								data[item++] = this._submitElementValue;
  							}
  
  							hasSubmit = true;
  						}
  						break;
  					default:
  						data[item++] = oName + oValue;
  				}
  			}
  		}
  
  		this._isFormSubmit = true;
  		this._sFormData = data.join('&');
  
  		YAHOO.log('Form initialized for transaction. HTML form POST message is: ' + this._sFormData, 'info', 'Connection');
  
  		this.initHeader('Content-Type', this._default_form_header);
  		YAHOO.log('Initialize header Content-Type to application/x-www-form-urlencoded for setForm() transaction.', 'info', 'Connection');
  
  		return this._sFormData;
  	}
  
    /**
     * @description Resets HTML form properties when an HTML form or HTML form
     * with file upload transaction is sent.
     * @method resetFormState
     * @private
     * @static
     * @return {void}
     */
  	function _resetFormState(){
  		this._isFormSubmit = false;
  		this._isFileUpload = false;
  		this._formNode = null;
  		this._sFormData = "";
  	}
  
  
    /**
     * @description Creates an iframe to be used for form file uploads.  It is remove from the
     * document upon completion of the upload transaction.
     * @method createFrame
     * @private
     * @static
     * @param {string} optional qualified path of iframe resource for SSL in IE.
     * @return {void}
     */
  	function _createFrame(secureUri){
  
  		// IE does not allow the setting of id and name attributes as object
  		// properties via createElement().  A different iframe creation
  		// pattern is required for IE.
  		var frameId = 'yuiIO' + this._transaction_id,
  			io;
  		if(YAHOO.env.ua.ie){
  			io = document.createElement('<iframe id="' + frameId + '" name="' + frameId + '" />');
  
  			// IE will throw a security exception in an SSL environment if the
  			// iframe source is undefined.
  			if(typeof secureUri == 'boolean'){
  				io.src = 'javascript:false';
  			}
  		}
  		else{
  			io = document.createElement('iframe');
  			io.id = frameId;
  			io.name = frameId;
  		}
  
  		io.style.position = 'absolute';
  		io.style.top = '-1000px';
  		io.style.left = '-1000px';
  
  		document.body.appendChild(io);
  		YAHOO.log('File upload iframe created. Id is:' + frameId, 'info', 'Connection');
  	}
  
    /**
     * @description Parses the POST data and creates hidden form elements
     * for each key-value, and appends them to the HTML form object.
     * @method appendPostData
     * @private
     * @static
     * @param {string} postData The HTTP POST data
     * @return {array} formElements Collection of hidden fields.
     */
  	function _appendPostData(postData){
  		var formElements = [],
  			postMessage = postData.split('&'),
  			i, delimitPos;
  
  		for(i=0; i < postMessage.length; i++){
  			delimitPos = postMessage[i].indexOf('=');
  			if(delimitPos != -1){
  				formElements[i] = document.createElement('input');
  				formElements[i].type = 'hidden';
  				formElements[i].name = decodeURIComponent(postMessage[i].substring(0,delimitPos));
  				formElements[i].value = decodeURIComponent(postMessage[i].substring(delimitPos+1));
  				this._formNode.appendChild(formElements[i]);
  			}
  		}
  
  		return formElements;
  	}
  
    /**
     * @description Uploads HTML form, inclusive of files/attachments, using the
     * iframe created in createFrame to facilitate the transaction.
     * @method uploadFile
     * @private
     * @static
     * @param {int} id The transaction id.
     * @param {object} callback User-defined callback object.
     * @param {string} uri Fully qualified path of resource.
     * @param {string} postData POST data to be submitted in addition to HTML form.
     * @return {void}
     */
  	function _uploadFile(o, callback, uri, postData){
  		// Each iframe has an id prefix of "yuiIO" followed
  		// by the unique transaction id.
  		var frameId = 'yuiIO' + o.tId,
  		    uploadEncoding = 'multipart/form-data',
  		    io = document.getElementById(frameId),
  		    ie8 = (document.documentMode && document.documentMode === 8) ? true : false,
  		    oConn = this,
  			args = (callback && callback.argument)?callback.argument:null,
              oElements,i,prop,obj, rawFormAttributes, uploadCallback;
  
  		// Track original HTML form attribute values.
  		rawFormAttributes = {
  			action:this._formNode.getAttribute('action'),
  			method:this._formNode.getAttribute('method'),
  			target:this._formNode.getAttribute('target')
  		};
  
  		// Initialize the HTML form properties in case they are
  		// not defined in the HTML form.
  		this._formNode.setAttribute('action', uri);
  		this._formNode.setAttribute('method', 'POST');
  		this._formNode.setAttribute('target', frameId);
  
          // Rick: Conditional removed here, set both types so that different flavors of IE can get their req'd encoding.
  			this._formNode.setAttribute('encoding', uploadEncoding);
  			this._formNode.setAttribute('enctype', uploadEncoding);
  
  		if(postData){
  			oElements = this.appendPostData(postData);
  		}
  
  		// Start file upload.
  		this._formNode.submit();
  
  		// Fire global custom event -- startEvent
  		this.startEvent.fire(o, args);
  
  		if(o.startEvent){
  			// Fire transaction custom event -- startEvent
  			o.startEvent.fire(o, args);
  		}
  
  		// Start polling if a callback is present and the timeout
  		// property has been defined.
  		if(callback && callback.timeout){
  			this._timeOut[o.tId] = window.setTimeout(function(){ oConn.abort(o, callback, true); }, callback.timeout);
  		}
  
  		// Remove HTML elements created by appendPostData
  		if(oElements && oElements.length > 0){
  			for(i=0; i < oElements.length; i++){
  				this._formNode.removeChild(oElements[i]);
  			}
  		}
  
  		// Restore HTML form attributes to their original
  		// values prior to file upload.
  		for(prop in rawFormAttributes){
  			if(YAHOO.lang.hasOwnProperty(rawFormAttributes, prop)){
  				if(rawFormAttributes[prop]){
  					this._formNode.setAttribute(prop, rawFormAttributes[prop]);
  				}
  				else{
  					this._formNode.removeAttribute(prop);
  				}
  			}
  		}
  
  		// Reset HTML form state properties.
  		this.resetFormState();
  
  		// Create the upload callback handler that fires when the iframe
  		// receives the load event.  Subsequently, the event handler is detached
  		// and the iframe removed from the document.
  		uploadCallback = function() {
  			if(callback && callback.timeout){
  				window.clearTimeout(oConn._timeOut[o.tId]);
  				delete oConn._timeOut[o.tId];
  			}
  
  			// Fire global custom event -- completeEvent
  			oConn.completeEvent.fire(o, args);
  
  			if(o.completeEvent){
  				// Fire transaction custom event -- completeEvent
  				o.completeEvent.fire(o, args);
  			}
  
  			obj = {
  			    tId : o.tId,
  			    argument : callback.argument
              };
  
  			try
  			{
  				// responseText and responseXML will be populated with the same data from the iframe.
  				// Since the HTTP headers cannot be read from the iframe
  				obj.responseText = io.contentWindow.document.body?io.contentWindow.document.body.innerHTML:io.contentWindow.document.documentElement.textContent;
  				obj.responseXML = io.contentWindow.document.XMLDocument?io.contentWindow.document.XMLDocument:io.contentWindow.document;
  			}
  			catch(e){}
  
  			if(callback && callback.upload){
  				if(!callback.scope){
  					callback.upload(obj);
  					YAHOO.log('Upload callback.', 'info', 'Connection');
  				}
  				else{
  					callback.upload.apply(callback.scope, [obj]);
  					YAHOO.log('Upload callback with scope.', 'info', 'Connection');
  				}
  			}
  
  			// Fire global custom event -- uploadEvent
  			oConn.uploadEvent.fire(obj);
  
  			if(o.uploadEvent){
  				// Fire transaction custom event -- uploadEvent
  				o.uploadEvent.fire(obj);
  			}
  
  			YE.removeListener(io, "load", uploadCallback);
  
  			setTimeout(
  				function(){
  					document.body.removeChild(io);
  					oConn.releaseObject(o);
  					YAHOO.log('File upload iframe destroyed. Id is:' + frameId, 'info', 'Connection');
  				}, 100);
  		};
  
  		// Bind the onload handler to the iframe to detect the file upload response.
  		YE.addListener(io, "load", uploadCallback);
  		}
  
  	YCM.setForm = _setForm;
  	YCM.resetFormState = _resetFormState;
  	YCM.createFrame = _createFrame;
  	YCM.appendPostData = _appendPostData;
  	YCM.uploadFile = _uploadFile;
  })();
  
  YAHOO.register("connection", YAHOO.util.Connect, {version: "2.8.0r4", build: "2449"});
  