YAHOO.util.Connect =
{
    _msxml_progid:[
        'Microsoft.XMLHTTP',
        'MSXML2.XMLHTTP.3.0',
        'MSXML2.XMLHTTP'
    ],
    _http_headers:{},
    _has_http_headers:false,
    _use_default_post_header:true,
    _default_post_header:'application/x-www-form-urlencoded; charset=UTF-8',
    _default_form_header:'application/x-www-form-urlencoded',
    _use_default_xhr_header:true,
    _default_xhr_header:'XMLHttpRequest',
    _has_default_headers:true,
    _default_headers:{},
    _poll:{},
    _timeOut:{},
    _polling_interval:50,
    _transaction_id:0,
    startEvent: new YAHOO.util.CustomEvent('start'),
    completeEvent: new YAHOO.util.CustomEvent('complete'),
    successEvent: new YAHOO.util.CustomEvent('success'),
    failureEvent: new YAHOO.util.CustomEvent('failure'),
    abortEvent: new YAHOO.util.CustomEvent('abort'),
    _customEvents:
    {
        onStart:['startEvent', 'start'],
        onComplete:['completeEvent', 'complete'],
        onSuccess:['successEvent', 'success'],
        onFailure:['failureEvent', 'failure'],
        onUpload:['uploadEvent', 'upload'],
        onAbort:['abortEvent', 'abort']
    },
    setProgId:function(id)
    {
        this._msxml_progid.unshift(id);
    },
    setDefaultPostHeader:function(b)
    {
        if (typeof b == 'string') {
            this._default_post_header = b;
        }
        else if (typeof b == 'boolean') {
            this._use_default_post_header = b;
        }
    },
    setDefaultXhrHeader:function(b)
    {
        if (typeof b == 'string') {
            this._default_xhr_header = b;
        }
        else {
            this._use_default_xhr_header = b;
        }
    },
    setPollingInterval:function(i)
    {
        if (typeof i == 'number' && isFinite(i)) {
            this._polling_interval = i;
        }
    },
    createXhrObject:function(transactionId)
    {
        var obj,http,i;
        try
        {
            http = new XMLHttpRequest();
            obj = { conn:http, tId:transactionId, xhr: true };
        }
        catch(e)
        {
            for (i = 0; i < this._msxml_progid.length; ++i) {
                try
                {
                    http = new ActiveXObject(this._msxml_progid[i]);
                    obj = { conn:http, tId:transactionId, xhr: true };
                    break;
                }
                catch(e1) {
                }
            }
        }
        finally
        {
            return obj;
        }
    },
    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;
    },

    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) {
            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 (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') {
                    postData = postData ? this._sFormData + "&" + postData : this._sFormData;
                }
            }

            if (method.toUpperCase() == 'GET' && (callback && callback.cache === false)) {
                uri += ((uri.indexOf('?') == -1) ? '?' : '&') + "rnd=" + new Date().valueOf().toString();
            }

            if (this._use_default_xhr_header) {
                if (!this._default_headers['X-Requested-With']) {
                    this.initHeader('X-Requested-With', this._default_xhr_header, true);
                }
            }

            if ((method.toUpperCase() === 'POST' && this._use_default_post_header) && this._isFormSubmit === false) {
                this.initHeader('Content-Type', this._default_post_header);
            }

            if (o.xdr) {
                this.xdr(o, method, uri, callback, postData);
                return o;
            }

            o.conn.open(method, uri, true);
            if (this._has_default_headers || this._has_http_headers) {
                this.setHeader(o);
            }

            this.handleReadyState(o, callback);
            o.conn.send(postData || '');

            if (this._isFormSubmit === true) {
                this.resetFormState();
            }

            this.startEvent.fire(o, args);

            if (o.startEvent) {
                o.startEvent.fire(o, args);
            }

            return o;
        }
    },

    initCustomEvents:function(o, callback)
    {
        var prop;
        for (prop in callback.customevents) {
            if (this._customEvents[prop][0]) {
                o[this._customEvents[prop][0]] = new YAHOO.util.CustomEvent(this._customEvents[prop][1], (callback.scope) ? callback.scope : null);

                o[this._customEvents[prop][0]].subscribe(callback.customevents[prop]);
            }
        }
    },

    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) {

                        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];
                        }

                        oConn.completeEvent.fire(o, args);

                        if (o.completeEvent) {
                            o.completeEvent.fire(o, args);
                        }

                        oConn.handleTransactionResponse(o, callback);
                    }
                }
                , this._polling_interval);
    },

    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) {
                httpStatus = o.conn.status;
            }
            else if (xdrF && !xdrA) {
                httpStatus = 0;
            }
            else {
                httpStatus = 13030;
            }
        }
        catch(e) {

            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);
                }
                else {
                    callback.success.apply(callback.scope, [responseObject]);
                }
            }

            this.successEvent.fire(responseObject);

            if (o.successEvent) {
                o.successEvent.fire(responseObject);
            }
        }
        else {
            switch (httpStatus) {
                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.
                    responseObject = this.createExceptionObject(o.tId, args, (isAbort ? isAbort : false));
                    if (callback && callback.failure) {
                        if (!callback.scope) {
                            callback.failure(responseObject);
                        }
                        else {
                            callback.failure.apply(callback.scope, [responseObject]);
                        }
                    }

                    break;
                default:
                    responseObject = (o.xdr) ? o.response : this.createResponseObject(o, args);
                    if (callback && callback.failure) {
                        if (!callback.scope) {
                            callback.failure(responseObject);
                        }
                        else {
                            callback.failure.apply(callback.scope, [responseObject]);
                        }
                    }
            }

            this.failureEvent.fire(responseObject);

            if (o.failureEvent) {
                o.failureEvent.fire(responseObject);
            }

        }

        this.releaseObject(o);
        responseObject = null;
    },

    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;
        obj.status = (o.conn.status == 1223) ? 204 : o.conn.status;
        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;
    },

    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;
    },

    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;
        }
    },

    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]);
                }
            }
        }

        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]);
                }
            }

            this._http_headers = {};
            this._has_http_headers = false;
        }
    },


    resetDefaultHeaders:function() {
        this._default_headers = {};
        this._has_default_headers = false;
    },

    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)) {
                    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) {
                YAHOO.util.Event.removeListener(io, "load");
                document.body.removeChild(io);

                if (isTimeout) {
                    window.clearTimeout(this._timeOut[o.tId]);
                    delete this._timeOut[o.tId];
                }

                abortStatus = true;
            }
        }
        else {
            abortStatus = false;
        }

        if (abortStatus === true) {
            this.abortEvent.fire(o, args);

            if (o.abortEvent) {
                o.abortEvent.fire(o, args);
            }

            this.handleTransactionResponse(o, callback, true);
        }

        return abortStatus;
    },

    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;
        }
    },

    releaseObject:function(o)
    {
        if (o && o.conn) {
            o.conn = null;

            o = null;
        }
    }
};

/**
 * @for Connect
 */
(function() {
    var YCM = YAHOO.util.Connect, _fn = {};

    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;
    }

    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);
    }

    function _init(uri) {
        _swf(uri);
        YCM._transport = document.getElementById('YUIConnectionSwf');
    }

    function _xdrReady() {
        YCM.xdrReadyEvent.fire();
    }


    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);
            }
        }
    }


    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];
    }

    YCM.xdr = _xdr;
    YCM.swf = _swf;
    YCM.transport = _init;
    YCM.xdrReadyEvent = new YAHOO.util.CustomEvent('xdrReady');
    YCM.xdrReady = _xdrReady;
    YCM.handleXdrResponse = _handleXdrResponse;
})();


(function() {
    var YCM = YAHOO.util.Connect,
            YE = YAHOO.util.Event;

    YCM._isFormSubmit = false;


    YCM._isFileUpload = false;


    YCM._formNode = null;


    YCM._sFormData = null;


    YCM._submitElementValue = null;


    YCM.uploadEvent = new YAHOO.util.CustomEvent('upload'),
            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;
            }();


    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') {

            oForm = (document.getElementById(formId) || document.forms[formId]);
        }
        else if (typeof formId == 'object') {

            oForm = formId;
        }
        else {
            return;
        }

        if (isUpload) {

            this.createFrame(secureUri ? secureUri : null);

            this._isFormSubmit = true;
            this._isFileUpload = true;
            this._formNode = oForm;

            return;
        }

        for (i = 0,len = oForm.elements.length; i < len; ++i) {
            oElement = oForm.elements[i];
            oDisabled = oElement.disabled;
            oName = oElement.name;


            if (!oDisabled && oName)
            {
                oName = encodeURIComponent(oName) + '=';
                oValue = encodeURIComponent(oElement.value);

                switch (oElement.type)
                        {

                    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':

                    case undefined:

                    case 'reset':

                    case 'button':

                        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('&');


        this.initHeader('Content-Type', this._default_form_header);

        return this._sFormData;
    }


    function _resetFormState() {
        this._isFormSubmit = false;
        this._isFileUpload = false;
        this._formNode = null;
        this._sFormData = "";
    }

    function _createFrame(secureUri) {

        var frameId = 'yuiIO' + this._transaction_id,
                io;
        if (YAHOO.env.ua.ie) {
            io = document.createElement('<iframe id="' + frameId + '" name="' + frameId + '" />');

            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);
    }

    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;
    }

    function _uploadFile(o, callback, uri, postData) {

        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;

        rawFormAttributes = {
            action:this._formNode.getAttribute('action'),
            method:this._formNode.getAttribute('method'),
            target:this._formNode.getAttribute('target')
        };

        this._formNode.setAttribute('action', uri);
        this._formNode.setAttribute('method', 'POST');
        this._formNode.setAttribute('target', frameId);

        if (YAHOO.env.ua.ie && !ie8) {
            this._formNode.setAttribute('encoding', uploadEncoding);
        }
        else {
            this._formNode.setAttribute('enctype', uploadEncoding);
        }

        if (postData) {
            oElements = this.appendPostData(postData);
        }

        this._formNode.submit();

        this.startEvent.fire(o, args);

        if (o.startEvent) {
            o.startEvent.fire(o, args);
        }

        if (callback && callback.timeout) {
            this._timeOut[o.tId] = window.setTimeout(function() {
                oConn.abort(o, callback, true);
            }, callback.timeout);
        }

        if (oElements && oElements.length > 0) {
            for (i = 0; i < oElements.length; i++) {
                this._formNode.removeChild(oElements[i]);
            }
        }

        for (prop in rawFormAttributes) {
            if (YAHOO.lang.hasOwnProperty(rawFormAttributes, prop)) {
                if (rawFormAttributes[prop]) {
                    this._formNode.setAttribute(prop, rawFormAttributes[prop]);
                }
                else {
                    this._formNode.removeAttribute(prop);
                }
            }
        }

        this.resetFormState();

        uploadCallback = function() {
            if (callback && callback.timeout) {
                window.clearTimeout(oConn._timeOut[o.tId]);
                delete oConn._timeOut[o.tId];
            }

            oConn.completeEvent.fire(o, args);

            if (o.completeEvent) {
                o.completeEvent.fire(o, args);
            }

            obj = {
                tId : o.tId,
                argument : callback.argument
            };

            try
            {
                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);
                }
                else {
                    callback.upload.apply(callback.scope, [obj]);
                }
            }

            oConn.uploadEvent.fire(obj);

            if (o.uploadEvent) {
                o.uploadEvent.fire(obj);
            }

            YE.removeListener(io, "load", uploadCallback);

            setTimeout(
                    function() {
                        document.body.removeChild(io);
                        oConn.releaseObject(o);
                    }, 100);
        };

        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"});