From fff8e29cbf0e75e964f8a3c6e7ebd5007972e878 Mon Sep 17 00:00:00 2001
From: Drew Jaynes <drewapicture@git.wordpress.org>
Date: Sat, 5 Aug 2017 12:59:12 +0000
Subject: [PATCH] External Libraries: Update jQuery Form (unused in core) to
 the latest version, 4.2.1.

Fixes #41565.


git-svn-id: https://develop.svn.wordpress.org/trunk@41233 602fd350-edb4-49c9-b593-d223f7449a82
---
 src/wp-includes/js/jquery/jquery.form.js     | 2673 ++++++++++--------
 src/wp-includes/js/jquery/jquery.form.min.js |   17 +-
 src/wp-includes/script-loader.php            |    2 +-
 3 files changed, 1510 insertions(+), 1182 deletions(-)

diff --git a/src/wp-includes/js/jquery/jquery.form.js b/src/wp-includes/js/jquery/jquery.form.js
index 7ea5bd6051..bd9e2a5a5f 100644
--- a/src/wp-includes/js/jquery/jquery.form.js
+++ b/src/wp-includes/js/jquery/jquery.form.js
@@ -1,1193 +1,1520 @@
 /*!
  * jQuery Form Plugin
- * version: 3.37.0-2013.07.11
- * @requires jQuery v1.5 or later
- * Copyright (c) 2013 M. Alsup
- * Examples and documentation at: http://malsup.com/jquery/form/
- * Project repository: https://github.com/malsup/form
- * Dual licensed under the MIT and GPL licenses.
- * https://github.com/malsup/form#copyright-and-license
+ * version: 4.2.1
+ * Requires jQuery v1.7 or later
+ * Copyright 2017 Kevin Morris
+ * Copyright 2006 M. Alsup
+ * Project repository: https://github.com/jquery-form/form
+ * Dual licensed under the MIT and LGPLv3 licenses.
+ * https://github.com/jquery-form/form#license
  */
-/*global ActiveXObject */
-;(function($) {
-"use strict";
+/* global ActiveXObject */
+
+/* eslint-disable */
+(function (factory) {
+	if (typeof define === 'function' && define.amd) {
+		// AMD. Register as an anonymous module.
+		define(['jquery'], factory);
+	} else if (typeof module === 'object' && module.exports) {
+		// Node/CommonJS
+		module.exports = function( root, jQuery ) {
+			if (typeof jQuery === 'undefined') {
+				// require('jQuery') returns a factory that requires window to build a jQuery instance, we normalize how we use modules
+				// that require this pattern but the window provided is a noop if it's defined (how jquery works)
+				if (typeof window !== 'undefined') {
+					jQuery = require('jquery');
+				}
+				else {
+					jQuery = require('jquery')(root);
+				}
+			}
+			factory(jQuery);
+			return jQuery;
+		};
+	} else {
+		// Browser globals
+		factory(jQuery);
+	}
+
+}(function ($) {
+/* eslint-enable */
+	'use strict';
+
+	/*
+		Usage Note:
+		-----------
+		Do not use both ajaxSubmit and ajaxForm on the same form. These
+		functions are mutually exclusive. Use ajaxSubmit if you want
+		to bind your own submit handler to the form. For example,
+
+		$(document).ready(function() {
+			$('#myForm').on('submit', function(e) {
+				e.preventDefault(); // <-- important
+				$(this).ajaxSubmit({
+					target: '#output'
+				});
+			});
+		});
+
+		Use ajaxForm when you want the plugin to manage all the event binding
+		for you. For example,
+
+		$(document).ready(function() {
+			$('#myForm').ajaxForm({
+				target: '#output'
+			});
+		});
+
+		You can also use ajaxForm with delegation (requires jQuery v1.7+), so the
+		form does not have to exist when you invoke ajaxForm:
+
+		$('#myForm').ajaxForm({
+			delegation: true,
+			target: '#output'
+		});
+
+		When using ajaxForm, the ajaxSubmit function will be invoked for you
+		at the appropriate time.
+	*/
+
+	var rCRLF = /\r?\n/g;
+
+	/**
+	 * Feature detection
+	 */
+	var feature = {};
+
+	feature.fileapi = $('<input type="file">').get(0).files !== undefined;
+	feature.formdata = (typeof window.FormData !== 'undefined');
+
+	var hasProp = !!$.fn.prop;
+
+	// attr2 uses prop when it can but checks the return type for
+	// an expected string. This accounts for the case where a form
+	// contains inputs with names like "action" or "method"; in those
+	// cases "prop" returns the element
+	$.fn.attr2 = function() {
+		if (!hasProp) {
+			return this.attr.apply(this, arguments);
+		}
+
+		var val = this.prop.apply(this, arguments);
+
+		if ((val && val.jquery) || typeof val === 'string') {
+			return val;
+		}
+
+		return this.attr.apply(this, arguments);
+	};
+
+	/**
+	 * ajaxSubmit() provides a mechanism for immediately submitting
+	 * an HTML form using AJAX.
+	 *
+	 * @param	{object|string}	options		jquery.form.js parameters or custom url for submission
+	 * @param	{object}		data		extraData
+	 * @param	{string}		dataType	ajax dataType
+	 * @param	{function}		onSuccess	ajax success callback function
+	 */
+	$.fn.ajaxSubmit = function(options, data, dataType, onSuccess) {
+		// fast fail if nothing selected (http://dev.jquery.com/ticket/2752)
+		if (!this.length) {
+			log('ajaxSubmit: skipping submit process - no element selected');
+
+			return this;
+		}
+
+		/* eslint consistent-this: ["error", "$form"] */
+		var method, action, url, $form = this;
+
+		if (typeof options === 'function') {
+			options = {success: options};
+
+		} else if (typeof options === 'string' || (options === false && arguments.length > 0)) {
+			options = {
+				'url'      : options,
+				'data'     : data,
+				'dataType' : dataType
+			};
+
+			if (typeof onSuccess === 'function') {
+				options.success = onSuccess;
+			}
+
+		} else if (typeof options === 'undefined') {
+			options = {};
+		}
+
+		method = options.method || options.type || this.attr2('method');
+		action = options.url || this.attr2('action');
+
+		url = (typeof action === 'string') ? $.trim(action) : '';
+		url = url || window.location.href || '';
+		if (url) {
+			// clean url (don't include hash vaue)
+			url = (url.match(/^([^#]+)/) || [])[1];
+		}
+
+		options = $.extend(true, {
+			url       : url,
+			success   : $.ajaxSettings.success,
+			type      : method || $.ajaxSettings.type,
+			iframeSrc : /^https/i.test(window.location.href || '') ? 'javascript:false' : 'about:blank'		// eslint-disable-line no-script-url
+		}, options);
+
+		// hook for manipulating the form data before it is extracted;
+		// convenient for use with rich editors like tinyMCE or FCKEditor
+		var veto = {};
+
+		this.trigger('form-pre-serialize', [this, options, veto]);
+
+		if (veto.veto) {
+			log('ajaxSubmit: submit vetoed via form-pre-serialize trigger');
+
+			return this;
+		}
+
+		// provide opportunity to alter form data before it is serialized
+		if (options.beforeSerialize && options.beforeSerialize(this, options) === false) {
+			log('ajaxSubmit: submit aborted via beforeSerialize callback');
+
+			return this;
+		}
+
+		var traditional = options.traditional;
+
+		if (typeof traditional === 'undefined') {
+			traditional = $.ajaxSettings.traditional;
+		}
+
+		var elements = [];
+		var qx, a = this.formToArray(options.semantic, elements, options.filtering);
+
+		if (options.data) {
+			var optionsData = $.isFunction(options.data) ? options.data(a) : options.data;
+
+			options.extraData = optionsData;
+			qx = $.param(optionsData, traditional);
+		}
+
+		// give pre-submit callback an opportunity to abort the submit
+		if (options.beforeSubmit && options.beforeSubmit(a, this, options) === false) {
+			log('ajaxSubmit: submit aborted via beforeSubmit callback');
+
+			return this;
+		}
+
+		// fire vetoable 'validate' event
+		this.trigger('form-submit-validate', [a, this, options, veto]);
+		if (veto.veto) {
+			log('ajaxSubmit: submit vetoed via form-submit-validate trigger');
+
+			return this;
+		}
+
+		var q = $.param(a, traditional);
+
+		if (qx) {
+			q = (q ? (q + '&' + qx) : qx);
+		}
 
-/*
-    Usage Note:
-    -----------
-    Do not use both ajaxSubmit and ajaxForm on the same form.  These
-    functions are mutually exclusive.  Use ajaxSubmit if you want
-    to bind your own submit handler to the form.  For example,
+		if (options.type.toUpperCase() === 'GET') {
+			options.url += (options.url.indexOf('?') >= 0 ? '&' : '?') + q;
+			options.data = null;	// data is null for 'get'
+		} else {
+			options.data = q;		// data is the query string for 'post'
+		}
 
-    $(document).ready(function() {
-        $('#myForm').on('submit', function(e) {
-            e.preventDefault(); // <-- important
-            $(this).ajaxSubmit({
-                target: '#output'
-            });
-        });
-    });
+		var callbacks = [];
 
-    Use ajaxForm when you want the plugin to manage all the event binding
-    for you.  For example,
+		if (options.resetForm) {
+			callbacks.push(function() {
+				$form.resetForm();
+			});
+		}
 
-    $(document).ready(function() {
-        $('#myForm').ajaxForm({
-            target: '#output'
-        });
-    });
+		if (options.clearForm) {
+			callbacks.push(function() {
+				$form.clearForm(options.includeHidden);
+			});
+		}
 
-    You can also use ajaxForm with delegation (requires jQuery v1.7+), so the
-    form does not have to exist when you invoke ajaxForm:
+		// perform a load on the target only if dataType is not provided
+		if (!options.dataType && options.target) {
+			var oldSuccess = options.success || function(){};
 
-    $('#myForm').ajaxForm({
-        delegation: true,
-        target: '#output'
-    });
+			callbacks.push(function(data, textStatus, jqXHR) {
+				var successArguments = arguments,
+					fn = options.replaceTarget ? 'replaceWith' : 'html';
 
-    When using ajaxForm, the ajaxSubmit function will be invoked for you
-    at the appropriate time.
-*/
+				$(options.target)[fn](data).each(function(){
+					oldSuccess.apply(this, successArguments);
+				});
+			});
 
-/**
- * Feature detection
- */
-var feature = {};
-feature.fileapi = $("<input type='file'/>").get(0).files !== undefined;
-feature.formdata = window.FormData !== undefined;
-
-var hasProp = !!$.fn.prop;
-
-// attr2 uses prop when it can but checks the return type for
-// an expected string.  this accounts for the case where a form 
-// contains inputs with names like "action" or "method"; in those
-// cases "prop" returns the element
-$.fn.attr2 = function() {
-    if ( ! hasProp )
-        return this.attr.apply(this, arguments);
-    var val = this.prop.apply(this, arguments);
-    if ( ( val && val.jquery ) || typeof val === 'string' )
-        return val;
-    return this.attr.apply(this, arguments);
-};
-
-/**
- * ajaxSubmit() provides a mechanism for immediately submitting
- * an HTML form using AJAX.
- */
-$.fn.ajaxSubmit = function(options) {
-    /*jshint scripturl:true */
-
-    // fast fail if nothing selected (http://dev.jquery.com/ticket/2752)
-    if (!this.length) {
-        log('ajaxSubmit: skipping submit process - no element selected');
-        return this;
-    }
-
-    var method, action, url, $form = this;
-
-    if (typeof options == 'function') {
-        options = { success: options };
-    }
-    else if ( options === undefined ) {
-        options = {};
-    }
-
-    method = options.type || this.attr2('method');
-    action = options.url  || this.attr2('action');
-
-    url = (typeof action === 'string') ? $.trim(action) : '';
-    url = url || window.location.href || '';
-    if (url) {
-        // clean url (don't include hash vaue)
-        url = (url.match(/^([^#]+)/)||[])[1];
-    }
-
-    options = $.extend(true, {
-        url:  url,
-        success: $.ajaxSettings.success,
-        type: method || 'GET',
-        iframeSrc: /^https/i.test(window.location.href || '') ? 'javascript:false' : 'about:blank'
-    }, options);
-
-    // hook for manipulating the form data before it is extracted;
-    // convenient for use with rich editors like tinyMCE or FCKEditor
-    var veto = {};
-    this.trigger('form-pre-serialize', [this, options, veto]);
-    if (veto.veto) {
-        log('ajaxSubmit: submit vetoed via form-pre-serialize trigger');
-        return this;
-    }
-
-    // provide opportunity to alter form data before it is serialized
-    if (options.beforeSerialize && options.beforeSerialize(this, options) === false) {
-        log('ajaxSubmit: submit aborted via beforeSerialize callback');
-        return this;
-    }
-
-    var traditional = options.traditional;
-    if ( traditional === undefined ) {
-        traditional = $.ajaxSettings.traditional;
-    }
-
-    var elements = [];
-    var qx, a = this.formToArray(options.semantic, elements);
-    if (options.data) {
-        options.extraData = options.data;
-        qx = $.param(options.data, traditional);
-    }
-
-    // give pre-submit callback an opportunity to abort the submit
-    if (options.beforeSubmit && options.beforeSubmit(a, this, options) === false) {
-        log('ajaxSubmit: submit aborted via beforeSubmit callback');
-        return this;
-    }
-
-    // fire vetoable 'validate' event
-    this.trigger('form-submit-validate', [a, this, options, veto]);
-    if (veto.veto) {
-        log('ajaxSubmit: submit vetoed via form-submit-validate trigger');
-        return this;
-    }
-
-    var q = $.param(a, traditional);
-    if (qx) {
-        q = ( q ? (q + '&' + qx) : qx );
-    }
-    if (options.type.toUpperCase() == 'GET') {
-        options.url += (options.url.indexOf('?') >= 0 ? '&' : '?') + q;
-        options.data = null;  // data is null for 'get'
-    }
-    else {
-        options.data = q; // data is the query string for 'post'
-    }
-
-    var callbacks = [];
-    if (options.resetForm) {
-        callbacks.push(function() { $form.resetForm(); });
-    }
-    if (options.clearForm) {
-        callbacks.push(function() { $form.clearForm(options.includeHidden); });
-    }
-
-    // perform a load on the target only if dataType is not provided
-    if (!options.dataType && options.target) {
-        var oldSuccess = options.success || function(){};
-        callbacks.push(function(data) {
-            var fn = options.replaceTarget ? 'replaceWith' : 'html';
-            $(options.target)[fn](data).each(oldSuccess, arguments);
-        });
-    }
-    else if (options.success) {
-        callbacks.push(options.success);
-    }
-
-    options.success = function(data, status, xhr) { // jQuery 1.4+ passes xhr as 3rd arg
-        var context = options.context || this ;    // jQuery 1.4+ supports scope context
-        for (var i=0, max=callbacks.length; i < max; i++) {
-            callbacks[i].apply(context, [data, status, xhr || $form, $form]);
-        }
-    };
-
-    if (options.error) {
-        var oldError = options.error;
-        options.error = function(xhr, status, error) {
-            var context = options.context || this;
-            oldError.apply(context, [xhr, status, error, $form]);
-        };
-    }
-
-     if (options.complete) {
-        var oldComplete = options.complete;
-        options.complete = function(xhr, status) {
-            var context = options.context || this;
-            oldComplete.apply(context, [xhr, status, $form]);
-        };
-    }
-
-    // are there files to upload?
-
-    // [value] (issue #113), also see comment:
-    // https://github.com/malsup/form/commit/588306aedba1de01388032d5f42a60159eea9228#commitcomment-2180219
-    var fileInputs = $('input[type=file]:enabled[value!=""]', this);
-
-    var hasFileInputs = fileInputs.length > 0;
-    var mp = 'multipart/form-data';
-    var multipart = ($form.attr('enctype') == mp || $form.attr('encoding') == mp);
-
-    var fileAPI = feature.fileapi && feature.formdata;
-    log("fileAPI :" + fileAPI);
-    var shouldUseFrame = (hasFileInputs || multipart) && !fileAPI;
-
-    var jqxhr;
-
-    // options.iframe allows user to force iframe mode
-    // 06-NOV-09: now defaulting to iframe mode if file input is detected
-    if (options.iframe !== false && (options.iframe || shouldUseFrame)) {
-        // hack to fix Safari hang (thanks to Tim Molendijk for this)
-        // see:  http://groups.google.com/group/jquery-dev/browse_thread/thread/36395b7ab510dd5d
-        if (options.closeKeepAlive) {
-            $.get(options.closeKeepAlive, function() {
-                jqxhr = fileUploadIframe(a);
-            });
-        }
-        else {
-            jqxhr = fileUploadIframe(a);
-        }
-    }
-    else if ((hasFileInputs || multipart) && fileAPI) {
-        jqxhr = fileUploadXhr(a);
-    }
-    else {
-        jqxhr = $.ajax(options);
-    }
-
-    $form.removeData('jqxhr').data('jqxhr', jqxhr);
-
-    // clear element array
-    for (var k=0; k < elements.length; k++)
-        elements[k] = null;
-
-    // fire 'notify' event
-    this.trigger('form-submit-notify', [this, options]);
-    return this;
-
-    // utility fn for deep serialization
-    function deepSerialize(extraData){
-        var serialized = $.param(extraData, options.traditional).split('&');
-        var len = serialized.length;
-        var result = [];
-        var i, part;
-        for (i=0; i < len; i++) {
-            // #252; undo param space replacement
-            serialized[i] = serialized[i].replace(/\+/g,' ');
-            part = serialized[i].split('=');
-            // #278; use array instead of object storage, favoring array serializations
-            result.push([decodeURIComponent(part[0]), decodeURIComponent(part[1])]);
-        }
-        return result;
-    }
-
-     // XMLHttpRequest Level 2 file uploads (big hat tip to francois2metz)
-    function fileUploadXhr(a) {
-        var formdata = new FormData();
-
-        for (var i=0; i < a.length; i++) {
-            formdata.append(a[i].name, a[i].value);
-        }
-
-        if (options.extraData) {
-            var serializedData = deepSerialize(options.extraData);
-            for (i=0; i < serializedData.length; i++)
-                if (serializedData[i])
-                    formdata.append(serializedData[i][0], serializedData[i][1]);
-        }
-
-        options.data = null;
-
-        var s = $.extend(true, {}, $.ajaxSettings, options, {
-            contentType: false,
-            processData: false,
-            cache: false,
-            type: method || 'POST'
-        });
-
-        if (options.uploadProgress) {
-            // workaround because jqXHR does not expose upload property
-            s.xhr = function() {
-                var xhr = $.ajaxSettings.xhr();
-                if (xhr.upload) {
-                    xhr.upload.addEventListener('progress', function(event) {
-                        var percent = 0;
-                        var position = event.loaded || event.position; /*event.position is deprecated*/
-                        var total = event.total;
-                        if (event.lengthComputable) {
-                            percent = Math.ceil(position / total * 100);
-                        }
-                        options.uploadProgress(event, position, total, percent);
-                    }, false);
-                }
-                return xhr;
-            };
-        }
-
-        s.data = null;
-            var beforeSend = s.beforeSend;
-            s.beforeSend = function(xhr, o) {
-                o.data = formdata;
-                if(beforeSend)
-                    beforeSend.call(this, xhr, o);
-        };
-        return $.ajax(s);
-    }
-
-    // private function for handling file uploads (hat tip to YAHOO!)
-    function fileUploadIframe(a) {
-        var form = $form[0], el, i, s, g, id, $io, io, xhr, sub, n, timedOut, timeoutHandle;
-        var deferred = $.Deferred();
-
-        if (a) {
-            // ensure that every serialized input is still enabled
-            for (i=0; i < elements.length; i++) {
-                el = $(elements[i]);
-                if ( hasProp )
-                    el.prop('disabled', false);
-                else
-                    el.removeAttr('disabled');
-            }
-        }
-
-        s = $.extend(true, {}, $.ajaxSettings, options);
-        s.context = s.context || s;
-        id = 'jqFormIO' + (new Date().getTime());
-        if (s.iframeTarget) {
-            $io = $(s.iframeTarget);
-            n = $io.attr2('name');
-            if (!n)
-                 $io.attr2('name', id);
-            else
-                id = n;
-        }
-        else {
-            $io = $('<iframe name="' + id + '" src="'+ s.iframeSrc +'" />');
-            $io.css({ position: 'absolute', top: '-1000px', left: '-1000px' });
-        }
-        io = $io[0];
-
-
-        xhr = { // mock object
-            aborted: 0,
-            responseText: null,
-            responseXML: null,
-            status: 0,
-            statusText: 'n/a',
-            getAllResponseHeaders: function() {},
-            getResponseHeader: function() {},
-            setRequestHeader: function() {},
-            abort: function(status) {
-                var e = (status === 'timeout' ? 'timeout' : 'aborted');
-                log('aborting upload... ' + e);
-                this.aborted = 1;
-
-                try { // #214, #257
-                    if (io.contentWindow.document.execCommand) {
-                        io.contentWindow.document.execCommand('Stop');
-                    }
-                }
-                catch(ignore) {}
-
-                $io.attr('src', s.iframeSrc); // abort op in progress
-                xhr.error = e;
-                if (s.error)
-                    s.error.call(s.context, xhr, e, status);
-                if (g)
-                    $.event.trigger("ajaxError", [xhr, s, e]);
-                if (s.complete)
-                    s.complete.call(s.context, xhr, e);
-            }
-        };
-
-        g = s.global;
-        // trigger ajax global events so that activity/block indicators work like normal
-        if (g && 0 === $.active++) {
-            $.event.trigger("ajaxStart");
-        }
-        if (g) {
-            $.event.trigger("ajaxSend", [xhr, s]);
-        }
-
-        if (s.beforeSend && s.beforeSend.call(s.context, xhr, s) === false) {
-            if (s.global) {
-                $.active--;
-            }
-            deferred.reject();
-            return deferred;
-        }
-        if (xhr.aborted) {
-            deferred.reject();
-            return deferred;
-        }
-
-        // add submitting element to data if we know it
-        sub = form.clk;
-        if (sub) {
-            n = sub.name;
-            if (n && !sub.disabled) {
-                s.extraData = s.extraData || {};
-                s.extraData[n] = sub.value;
-                if (sub.type == "image") {
-                    s.extraData[n+'.x'] = form.clk_x;
-                    s.extraData[n+'.y'] = form.clk_y;
-                }
-            }
-        }
-
-        var CLIENT_TIMEOUT_ABORT = 1;
-        var SERVER_ABORT = 2;
-                
-        function getDoc(frame) {
-            /* it looks like contentWindow or contentDocument do not
-             * carry the protocol property in ie8, when running under ssl
-             * frame.document is the only valid response document, since
-             * the protocol is know but not on the other two objects. strange?
-             * "Same origin policy" http://en.wikipedia.org/wiki/Same_origin_policy
-             */
-            
-            var doc = null;
-            
-            // IE8 cascading access check
-            try {
-                if (frame.contentWindow) {
-                    doc = frame.contentWindow.document;
-                }
-            } catch(err) {
-                // IE8 access denied under ssl & missing protocol
-                log('cannot get iframe.contentWindow document: ' + err);
-            }
-
-            if (doc) { // successful getting content
-                return doc;
-            }
-
-            try { // simply checking may throw in ie8 under ssl or mismatched protocol
-                doc = frame.contentDocument ? frame.contentDocument : frame.document;
-            } catch(err) {
-                // last attempt
-                log('cannot get iframe.contentDocument: ' + err);
-                doc = frame.document;
-            }
-            return doc;
-        }
-
-        // Rails CSRF hack (thanks to Yvan Barthelemy)
-        var csrf_token = $('meta[name=csrf-token]').attr('content');
-        var csrf_param = $('meta[name=csrf-param]').attr('content');
-        if (csrf_param && csrf_token) {
-            s.extraData = s.extraData || {};
-            s.extraData[csrf_param] = csrf_token;
-        }
-
-        // take a breath so that pending repaints get some cpu time before the upload starts
-        function doSubmit() {
-            // make sure form attrs are set
-            var t = $form.attr2('target'), a = $form.attr2('action');
-
-            // update form attrs in IE friendly way
-            form.setAttribute('target',id);
-            if (!method) {
-                form.setAttribute('method', 'POST');
-            }
-            if (a != s.url) {
-                form.setAttribute('action', s.url);
-            }
-
-            // ie borks in some cases when setting encoding
-            if (! s.skipEncodingOverride && (!method || /post/i.test(method))) {
-                $form.attr({
-                    encoding: 'multipart/form-data',
-                    enctype:  'multipart/form-data'
-                });
-            }
-
-            // support timout
-            if (s.timeout) {
-                timeoutHandle = setTimeout(function() { timedOut = true; cb(CLIENT_TIMEOUT_ABORT); }, s.timeout);
-            }
-
-            // look for server aborts
-            function checkState() {
-                try {
-                    var state = getDoc(io).readyState;
-                    log('state = ' + state);
-                    if (state && state.toLowerCase() == 'uninitialized')
-                        setTimeout(checkState,50);
-                }
-                catch(e) {
-                    log('Server abort: ' , e, ' (', e.name, ')');
-                    cb(SERVER_ABORT);
-                    if (timeoutHandle)
-                        clearTimeout(timeoutHandle);
-                    timeoutHandle = undefined;
-                }
-            }
-
-            // add "extra" data to form if provided in options
-            var extraInputs = [];
-            try {
-                if (s.extraData) {
-                    for (var n in s.extraData) {
-                        if (s.extraData.hasOwnProperty(n)) {
-                           // if using the $.param format that allows for multiple values with the same name
-                           if($.isPlainObject(s.extraData[n]) && s.extraData[n].hasOwnProperty('name') && s.extraData[n].hasOwnProperty('value')) {
-                               extraInputs.push(
-                               $('<input type="hidden" name="'+s.extraData[n].name+'">').val(s.extraData[n].value)
-                                   .appendTo(form)[0]);
-                           } else {
-                               extraInputs.push(
-                               $('<input type="hidden" name="'+n+'">').val(s.extraData[n])
-                                   .appendTo(form)[0]);
-                           }
-                        }
-                    }
-                }
-
-                if (!s.iframeTarget) {
-                    // add iframe to doc and submit the form
-                    $io.appendTo('body');
-                    if (io.attachEvent)
-                        io.attachEvent('onload', cb);
-                    else
-                        io.addEventListener('load', cb, false);
-                }
-                setTimeout(checkState,15);
-
-                try {
-                    form.submit();
-                } catch(err) {
-                    // just in case form has element with name/id of 'submit'
-                    var submitFn = document.createElement('form').submit;
-                    submitFn.apply(form);
-                }
-            }
-            finally {
-                // reset attrs and remove "extra" input elements
-                form.setAttribute('action',a);
-                if(t) {
-                    form.setAttribute('target', t);
-                } else {
-                    $form.removeAttr('target');
-                }
-                $(extraInputs).remove();
-            }
-        }
-
-        if (s.forceSync) {
-            doSubmit();
-        }
-        else {
-            setTimeout(doSubmit, 10); // this lets dom updates render
-        }
-
-        var data, doc, domCheckCount = 50, callbackProcessed;
-
-        function cb(e) {
-            if (xhr.aborted || callbackProcessed) {
-                return;
-            }
-            
-            doc = getDoc(io);
-            if(!doc) {
-                log('cannot access response document');
-                e = SERVER_ABORT;
-            }
-            if (e === CLIENT_TIMEOUT_ABORT && xhr) {
-                xhr.abort('timeout');
-                deferred.reject(xhr, 'timeout');
-                return;
-            }
-            else if (e == SERVER_ABORT && xhr) {
-                xhr.abort('server abort');
-                deferred.reject(xhr, 'error', 'server abort');
-                return;
-            }
-
-            if (!doc || doc.location.href == s.iframeSrc) {
-                // response not received yet
-                if (!timedOut)
-                    return;
-            }
-            if (io.detachEvent)
-                io.detachEvent('onload', cb);
-            else
-                io.removeEventListener('load', cb, false);
-
-            var status = 'success', errMsg;
-            try {
-                if (timedOut) {
-                    throw 'timeout';
-                }
-
-                var isXml = s.dataType == 'xml' || doc.XMLDocument || $.isXMLDoc(doc);
-                log('isXml='+isXml);
-                if (!isXml && window.opera && (doc.body === null || !doc.body.innerHTML)) {
-                    if (--domCheckCount) {
-                        // in some browsers (Opera) the iframe DOM is not always traversable when
-                        // the onload callback fires, so we loop a bit to accommodate
-                        log('requeing onLoad callback, DOM not available');
-                        setTimeout(cb, 250);
-                        return;
-                    }
-                    // let this fall through because server response could be an empty document
-                    //log('Could not access iframe DOM after mutiple tries.');
-                    //throw 'DOMException: not available';
-                }
-
-                //log('response detected');
-                var docRoot = doc.body ? doc.body : doc.documentElement;
-                xhr.responseText = docRoot ? docRoot.innerHTML : null;
-                xhr.responseXML = doc.XMLDocument ? doc.XMLDocument : doc;
-                if (isXml)
-                    s.dataType = 'xml';
-                xhr.getResponseHeader = function(header){
-                    var headers = {'content-type': s.dataType};
-                    return headers[header];
-                };
-                // support for XHR 'status' & 'statusText' emulation :
-                if (docRoot) {
-                    xhr.status = Number( docRoot.getAttribute('status') ) || xhr.status;
-                    xhr.statusText = docRoot.getAttribute('statusText') || xhr.statusText;
-                }
-
-                var dt = (s.dataType || '').toLowerCase();
-                var scr = /(json|script|text)/.test(dt);
-                if (scr || s.textarea) {
-                    // see if user embedded response in textarea
-                    var ta = doc.getElementsByTagName('textarea')[0];
-                    if (ta) {
-                        xhr.responseText = ta.value;
-                        // support for XHR 'status' & 'statusText' emulation :
-                        xhr.status = Number( ta.getAttribute('status') ) || xhr.status;
-                        xhr.statusText = ta.getAttribute('statusText') || xhr.statusText;
-                    }
-                    else if (scr) {
-                        // account for browsers injecting pre around json response
-                        var pre = doc.getElementsByTagName('pre')[0];
-                        var b = doc.getElementsByTagName('body')[0];
-                        if (pre) {
-                            xhr.responseText = pre.textContent ? pre.textContent : pre.innerText;
-                        }
-                        else if (b) {
-                            xhr.responseText = b.textContent ? b.textContent : b.innerText;
-                        }
-                    }
-                }
-                else if (dt == 'xml' && !xhr.responseXML && xhr.responseText) {
-                    xhr.responseXML = toXml(xhr.responseText);
-                }
-
-                try {
-                    data = httpData(xhr, dt, s);
-                }
-                catch (err) {
-                    status = 'parsererror';
-                    xhr.error = errMsg = (err || status);
-                }
-            }
-            catch (err) {
-                log('error caught: ',err);
-                status = 'error';
-                xhr.error = errMsg = (err || status);
-            }
-
-            if (xhr.aborted) {
-                log('upload aborted');
-                status = null;
-            }
-
-            if (xhr.status) { // we've set xhr.status
-                status = (xhr.status >= 200 && xhr.status < 300 || xhr.status === 304) ? 'success' : 'error';
-            }
-
-            // ordering of these callbacks/triggers is odd, but that's how $.ajax does it
-            if (status === 'success') {
-                if (s.success)
-                    s.success.call(s.context, data, 'success', xhr);
-                deferred.resolve(xhr.responseText, 'success', xhr);
-                if (g)
-                    $.event.trigger("ajaxSuccess", [xhr, s]);
-            }
-            else if (status) {
-                if (errMsg === undefined)
-                    errMsg = xhr.statusText;
-                if (s.error)
-                    s.error.call(s.context, xhr, status, errMsg);
-                deferred.reject(xhr, 'error', errMsg);
-                if (g)
-                    $.event.trigger("ajaxError", [xhr, s, errMsg]);
-            }
-
-            if (g)
-                $.event.trigger("ajaxComplete", [xhr, s]);
-
-            if (g && ! --$.active) {
-                $.event.trigger("ajaxStop");
-            }
-
-            if (s.complete)
-                s.complete.call(s.context, xhr, status);
-
-            callbackProcessed = true;
-            if (s.timeout)
-                clearTimeout(timeoutHandle);
-
-            // clean up
-            setTimeout(function() {
-                if (!s.iframeTarget)
-                    $io.remove();
-                xhr.responseXML = null;
-            }, 100);
-        }
-
-        var toXml = $.parseXML || function(s, doc) { // use parseXML if available (jQuery 1.5+)
-            if (window.ActiveXObject) {
-                doc = new ActiveXObject('Microsoft.XMLDOM');
-                doc.async = 'false';
-                doc.loadXML(s);
-            }
-            else {
-                doc = (new DOMParser()).parseFromString(s, 'text/xml');
-            }
-            return (doc && doc.documentElement && doc.documentElement.nodeName != 'parsererror') ? doc : null;
-        };
-        var parseJSON = $.parseJSON || function(s) {
-            /*jslint evil:true */
-            return window['eval']('(' + s + ')');
-        };
-
-        var httpData = function( xhr, type, s ) { // mostly lifted from jq1.4.4
-
-            var ct = xhr.getResponseHeader('content-type') || '',
-                xml = type === 'xml' || !type && ct.indexOf('xml') >= 0,
-                data = xml ? xhr.responseXML : xhr.responseText;
-
-            if (xml && data.documentElement.nodeName === 'parsererror') {
-                if ($.error)
-                    $.error('parsererror');
-            }
-            if (s && s.dataFilter) {
-                data = s.dataFilter(data, type);
-            }
-            if (typeof data === 'string') {
-                if (type === 'json' || !type && ct.indexOf('json') >= 0) {
-                    data = parseJSON(data);
-                } else if (type === "script" || !type && ct.indexOf("javascript") >= 0) {
-                    $.globalEval(data);
-                }
-            }
-            return data;
-        };
-
-        return deferred;
-    }
-};
-
-/**
- * ajaxForm() provides a mechanism for fully automating form submission.
- *
- * The advantages of using this method instead of ajaxSubmit() are:
- *
- * 1: This method will include coordinates for <input type="image" /> elements (if the element
- *    is used to submit the form).
- * 2. This method will include the submit element's name/value data (for the element that was
- *    used to submit the form).
- * 3. This method binds the submit() method to the form for you.
- *
- * The options argument for ajaxForm works exactly as it does for ajaxSubmit.  ajaxForm merely
- * passes the options argument along after properly binding events for submit elements and
- * the form itself.
- */
-$.fn.ajaxForm = function(options) {
-    options = options || {};
-    options.delegation = options.delegation && $.isFunction($.fn.on);
-
-    // in jQuery 1.3+ we can fix mistakes with the ready state
-    if (!options.delegation && this.length === 0) {
-        var o = { s: this.selector, c: this.context };
-        if (!$.isReady && o.s) {
-            log('DOM not ready, queuing ajaxForm');
-            $(function() {
-                $(o.s,o.c).ajaxForm(options);
-            });
-            return this;
-        }
-        // is your DOM ready?  http://docs.jquery.com/Tutorials:Introducing_$(document).ready()
-        log('terminating; zero elements found by selector' + ($.isReady ? '' : ' (DOM not ready)'));
-        return this;
-    }
-
-    if ( options.delegation ) {
-        $(document)
-            .off('submit.form-plugin', this.selector, doAjaxSubmit)
-            .off('click.form-plugin', this.selector, captureSubmittingElement)
-            .on('submit.form-plugin', this.selector, options, doAjaxSubmit)
-            .on('click.form-plugin', this.selector, options, captureSubmittingElement);
-        return this;
-    }
-
-    return this.ajaxFormUnbind()
-        .bind('submit.form-plugin', options, doAjaxSubmit)
-        .bind('click.form-plugin', options, captureSubmittingElement);
-};
-
-// private event handlers
-function doAjaxSubmit(e) {
-    /*jshint validthis:true */
-    var options = e.data;
-    if (!e.isDefaultPrevented()) { // if event has been canceled, don't proceed
-        e.preventDefault();
-        $(this).ajaxSubmit(options);
-    }
-}
-
-function captureSubmittingElement(e) {
-    /*jshint validthis:true */
-    var target = e.target;
-    var $el = $(target);
-    if (!($el.is("[type=submit],[type=image]"))) {
-        // is this a child element of the submit el?  (ex: a span within a button)
-        var t = $el.closest('[type=submit]');
-        if (t.length === 0) {
-            return;
-        }
-        target = t[0];
-    }
-    var form = this;
-    form.clk = target;
-    if (target.type == 'image') {
-        if (e.offsetX !== undefined) {
-            form.clk_x = e.offsetX;
-            form.clk_y = e.offsetY;
-        } else if (typeof $.fn.offset == 'function') {
-            var offset = $el.offset();
-            form.clk_x = e.pageX - offset.left;
-            form.clk_y = e.pageY - offset.top;
-        } else {
-            form.clk_x = e.pageX - target.offsetLeft;
-            form.clk_y = e.pageY - target.offsetTop;
-        }
-    }
-    // clear form vars
-    setTimeout(function() { form.clk = form.clk_x = form.clk_y = null; }, 100);
-}
-
-
-// ajaxFormUnbind unbinds the event handlers that were bound by ajaxForm
-$.fn.ajaxFormUnbind = function() {
-    return this.unbind('submit.form-plugin click.form-plugin');
-};
-
-/**
- * formToArray() gathers form element data into an array of objects that can
- * be passed to any of the following ajax functions: $.get, $.post, or load.
- * Each object in the array has both a 'name' and 'value' property.  An example of
- * an array for a simple login form might be:
- *
- * [ { name: 'username', value: 'jresig' }, { name: 'password', value: 'secret' } ]
- *
- * It is this array that is passed to pre-submit callback functions provided to the
- * ajaxSubmit() and ajaxForm() methods.
- */
-$.fn.formToArray = function(semantic, elements) {
-    var a = [];
-    if (this.length === 0) {
-        return a;
-    }
-
-    var form = this[0];
-    var els = semantic ? form.getElementsByTagName('*') : form.elements;
-    if (!els) {
-        return a;
-    }
-
-    var i,j,n,v,el,max,jmax;
-    for(i=0, max=els.length; i < max; i++) {
-        el = els[i];
-        n = el.name;
-        if (!n || el.disabled) {
-            continue;
-        }
-
-        if (semantic && form.clk && el.type == "image") {
-            // handle image inputs on the fly when semantic == true
-            if(form.clk == el) {
-                a.push({name: n, value: $(el).val(), type: el.type });
-                a.push({name: n+'.x', value: form.clk_x}, {name: n+'.y', value: form.clk_y});
-            }
-            continue;
-        }
-
-        v = $.fieldValue(el, true);
-        if (v && v.constructor == Array) {
-            if (elements)
-                elements.push(el);
-            for(j=0, jmax=v.length; j < jmax; j++) {
-                a.push({name: n, value: v[j]});
-            }
-        }
-        else if (feature.fileapi && el.type == 'file') {
-            if (elements)
-                elements.push(el);
-            var files = el.files;
-            if (files.length) {
-                for (j=0; j < files.length; j++) {
-                    a.push({name: n, value: files[j], type: el.type});
-                }
-            }
-            else {
-                // #180
-                a.push({ name: n, value: '', type: el.type });
-            }
-        }
-        else if (v !== null && typeof v != 'undefined') {
-            if (elements)
-                elements.push(el);
-            a.push({name: n, value: v, type: el.type, required: el.required});
-        }
-    }
-
-    if (!semantic && form.clk) {
-        // input type=='image' are not found in elements array! handle it here
-        var $input = $(form.clk), input = $input[0];
-        n = input.name;
-        if (n && !input.disabled && input.type == 'image') {
-            a.push({name: n, value: $input.val()});
-            a.push({name: n+'.x', value: form.clk_x}, {name: n+'.y', value: form.clk_y});
-        }
-    }
-    return a;
-};
-
-/**
- * Serializes form data into a 'submittable' string. This method will return a string
- * in the format: name1=value1&amp;name2=value2
- */
-$.fn.formSerialize = function(semantic) {
-    //hand off to jQuery.param for proper encoding
-    return $.param(this.formToArray(semantic));
-};
-
-/**
- * Serializes all field elements in the jQuery object into a query string.
- * This method will return a string in the format: name1=value1&amp;name2=value2
- */
-$.fn.fieldSerialize = function(successful) {
-    var a = [];
-    this.each(function() {
-        var n = this.name;
-        if (!n) {
-            return;
-        }
-        var v = $.fieldValue(this, successful);
-        if (v && v.constructor == Array) {
-            for (var i=0,max=v.length; i < max; i++) {
-                a.push({name: n, value: v[i]});
-            }
-        }
-        else if (v !== null && typeof v != 'undefined') {
-            a.push({name: this.name, value: v});
-        }
-    });
-    //hand off to jQuery.param for proper encoding
-    return $.param(a);
-};
-
-/**
- * Returns the value(s) of the element in the matched set.  For example, consider the following form:
- *
- *  <form><fieldset>
- *      <input name="A" type="text" />
- *      <input name="A" type="text" />
- *      <input name="B" type="checkbox" value="B1" />
- *      <input name="B" type="checkbox" value="B2"/>
- *      <input name="C" type="radio" value="C1" />
- *      <input name="C" type="radio" value="C2" />
- *  </fieldset></form>
- *
- *  var v = $('input[type=text]').fieldValue();
- *  // if no values are entered into the text inputs
- *  v == ['','']
- *  // if values entered into the text inputs are 'foo' and 'bar'
- *  v == ['foo','bar']
- *
- *  var v = $('input[type=checkbox]').fieldValue();
- *  // if neither checkbox is checked
- *  v === undefined
- *  // if both checkboxes are checked
- *  v == ['B1', 'B2']
- *
- *  var v = $('input[type=radio]').fieldValue();
- *  // if neither radio is checked
- *  v === undefined
- *  // if first radio is checked
- *  v == ['C1']
- *
- * The successful argument controls whether or not the field element must be 'successful'
- * (per http://www.w3.org/TR/html4/interact/forms.html#successful-controls).
- * The default value of the successful argument is true.  If this value is false the value(s)
- * for each element is returned.
- *
- * Note: This method *always* returns an array.  If no valid value can be determined the
- *    array will be empty, otherwise it will contain one or more values.
- */
-$.fn.fieldValue = function(successful) {
-    for (var val=[], i=0, max=this.length; i < max; i++) {
-        var el = this[i];
-        var v = $.fieldValue(el, successful);
-        if (v === null || typeof v == 'undefined' || (v.constructor == Array && !v.length)) {
-            continue;
-        }
-        if (v.constructor == Array)
-            $.merge(val, v);
-        else
-            val.push(v);
-    }
-    return val;
-};
-
-/**
- * Returns the value of the field element.
- */
-$.fieldValue = function(el, successful) {
-    var n = el.name, t = el.type, tag = el.tagName.toLowerCase();
-    if (successful === undefined) {
-        successful = true;
-    }
-
-    if (successful && (!n || el.disabled || t == 'reset' || t == 'button' ||
-        (t == 'checkbox' || t == 'radio') && !el.checked ||
-        (t == 'submit' || t == 'image') && el.form && el.form.clk != el ||
-        tag == 'select' && el.selectedIndex == -1)) {
-            return null;
-    }
-
-    if (tag == 'select') {
-        var index = el.selectedIndex;
-        if (index < 0) {
-            return null;
-        }
-        var a = [], ops = el.options;
-        var one = (t == 'select-one');
-        var max = (one ? index+1 : ops.length);
-        for(var i=(one ? index : 0); i < max; i++) {
-            var op = ops[i];
-            if (op.selected) {
-                var v = op.value;
-                if (!v) { // extra pain for IE...
-                    v = (op.attributes && op.attributes['value'] && !(op.attributes['value'].specified)) ? op.text : op.value;
-                }
-                if (one) {
-                    return v;
-                }
-                a.push(v);
-            }
-        }
-        return a;
-    }
-    return $(el).val();
-};
-
-/**
- * Clears the form data.  Takes the following actions on the form's input fields:
- *  - input text fields will have their 'value' property set to the empty string
- *  - select elements will have their 'selectedIndex' property set to -1
- *  - checkbox and radio inputs will have their 'checked' property set to false
- *  - inputs of type submit, button, reset, and hidden will *not* be effected
- *  - button elements will *not* be effected
- */
-$.fn.clearForm = function(includeHidden) {
-    return this.each(function() {
-        $('input,select,textarea', this).clearFields(includeHidden);
-    });
-};
-
-/**
- * Clears the selected form elements.
- */
-$.fn.clearFields = $.fn.clearInputs = function(includeHidden) {
-    var re = /^(?:color|date|datetime|email|month|number|password|range|search|tel|text|time|url|week)$/i; // 'hidden' is not in this list
-    return this.each(function() {
-        var t = this.type, tag = this.tagName.toLowerCase();
-        if (re.test(t) || tag == 'textarea') {
-            this.value = '';
-        }
-        else if (t == 'checkbox' || t == 'radio') {
-            this.checked = false;
-        }
-        else if (tag == 'select') {
-            this.selectedIndex = -1;
-        }
-		else if (t == "file") {
-			if (/MSIE/.test(navigator.userAgent)) {
-				$(this).replaceWith($(this).clone(true));
+		} else if (options.success) {
+			if ($.isArray(options.success)) {
+				$.merge(callbacks, options.success);
 			} else {
-				$(this).val('');
+				callbacks.push(options.success);
 			}
 		}
-        else if (includeHidden) {
-            // includeHidden can be the value true, or it can be a selector string
-            // indicating a special test; for example:
-            //  $('#myForm').clearForm('.special:hidden')
-            // the above would clean hidden inputs that have the class of 'special'
-            if ( (includeHidden === true && /hidden/.test(t)) ||
-                 (typeof includeHidden == 'string' && $(this).is(includeHidden)) )
-                this.value = '';
-        }
-    });
-};
 
-/**
- * Resets the form data.  Causes all form elements to be reset to their original value.
- */
-$.fn.resetForm = function() {
-    return this.each(function() {
-        // guard against an input with the name of 'reset'
-        // note that IE reports the reset function as an 'object'
-        if (typeof this.reset == 'function' || (typeof this.reset == 'object' && !this.reset.nodeType)) {
-            this.reset();
-        }
-    });
-};
+		options.success = function(data, status, xhr) { // jQuery 1.4+ passes xhr as 3rd arg
+			var context = options.context || this;		// jQuery 1.4+ supports scope context
 
-/**
- * Enables or disables any matching elements.
- */
-$.fn.enable = function(b) {
-    if (b === undefined) {
-        b = true;
-    }
-    return this.each(function() {
-        this.disabled = !b;
-    });
-};
+			for (var i = 0, max = callbacks.length; i < max; i++) {
+				callbacks[i].apply(context, [data, status, xhr || $form, $form]);
+			}
+		};
 
-/**
- * Checks/unchecks any matching checkboxes or radio buttons and
- * selects/deselects and matching option elements.
- */
-$.fn.selected = function(select) {
-    if (select === undefined) {
-        select = true;
-    }
-    return this.each(function() {
-        var t = this.type;
-        if (t == 'checkbox' || t == 'radio') {
-            this.checked = select;
-        }
-        else if (this.tagName.toLowerCase() == 'option') {
-            var $sel = $(this).parent('select');
-            if (select && $sel[0] && $sel[0].type == 'select-one') {
-                // deselect all other options
-                $sel.find('option').selected(false);
-            }
-            this.selected = select;
-        }
-    });
-};
+		if (options.error) {
+			var oldError = options.error;
 
-// expose debug var
-$.fn.ajaxSubmit.debug = false;
+			options.error = function(xhr, status, error) {
+				var context = options.context || this;
 
-// helper fn for console logging
-function log() {
-    if (!$.fn.ajaxSubmit.debug)
-        return;
-    var msg = '[jquery.form] ' + Array.prototype.join.call(arguments,'');
-    if (window.console && window.console.log) {
-        window.console.log(msg);
-    }
-    else if (window.opera && window.opera.postError) {
-        window.opera.postError(msg);
-    }
-}
+				oldError.apply(context, [xhr, status, error, $form]);
+			};
+		}
 
-})(jQuery);
+		if (options.complete) {
+			var oldComplete = options.complete;
+
+			options.complete = function(xhr, status) {
+				var context = options.context || this;
+
+				oldComplete.apply(context, [xhr, status, $form]);
+			};
+		}
+
+		// are there files to upload?
+
+		// [value] (issue #113), also see comment:
+		// https://github.com/malsup/form/commit/588306aedba1de01388032d5f42a60159eea9228#commitcomment-2180219
+		var fileInputs = $('input[type=file]:enabled', this).filter(function() {
+			return $(this).val() !== '';
+		});
+		var hasFileInputs = fileInputs.length > 0;
+		var mp = 'multipart/form-data';
+		var multipart = ($form.attr('enctype') === mp || $form.attr('encoding') === mp);
+		var fileAPI = feature.fileapi && feature.formdata;
+
+		log('fileAPI :' + fileAPI);
+
+		var shouldUseFrame = (hasFileInputs || multipart) && !fileAPI;
+		var jqxhr;
+
+		// options.iframe allows user to force iframe mode
+		// 06-NOV-09: now defaulting to iframe mode if file input is detected
+		if (options.iframe !== false && (options.iframe || shouldUseFrame)) {
+			// hack to fix Safari hang (thanks to Tim Molendijk for this)
+			// see: http://groups.google.com/group/jquery-dev/browse_thread/thread/36395b7ab510dd5d
+			if (options.closeKeepAlive) {
+				$.get(options.closeKeepAlive, function() {
+					jqxhr = fileUploadIframe(a);
+				});
+
+			} else {
+				jqxhr = fileUploadIframe(a);
+			}
+
+		} else if ((hasFileInputs || multipart) && fileAPI) {
+			jqxhr = fileUploadXhr(a);
+
+		} else {
+			jqxhr = $.ajax(options);
+		}
+
+		$form.removeData('jqxhr').data('jqxhr', jqxhr);
+
+		// clear element array
+		for (var k = 0; k < elements.length; k++) {
+			elements[k] = null;
+		}
+
+		// fire 'notify' event
+		this.trigger('form-submit-notify', [this, options]);
+
+		return this;
+
+		// utility fn for deep serialization
+		function deepSerialize(extraData) {
+			var serialized = $.param(extraData, options.traditional).split('&');
+			var len = serialized.length;
+			var result = [];
+			var i, part;
+
+			for (i = 0; i < len; i++) {
+				// #252; undo param space replacement
+				serialized[i] = serialized[i].replace(/\+/g, ' ');
+				part = serialized[i].split('=');
+				// #278; use array instead of object storage, favoring array serializations
+				result.push([decodeURIComponent(part[0]), decodeURIComponent(part[1])]);
+			}
+
+			return result;
+		}
+
+		// XMLHttpRequest Level 2 file uploads (big hat tip to francois2metz)
+		function fileUploadXhr(a) {
+			var formdata = new FormData();
+
+			for (var i = 0; i < a.length; i++) {
+				formdata.append(a[i].name, a[i].value);
+			}
+
+			if (options.extraData) {
+				var serializedData = deepSerialize(options.extraData);
+
+				for (i = 0; i < serializedData.length; i++) {
+					if (serializedData[i]) {
+						formdata.append(serializedData[i][0], serializedData[i][1]);
+					}
+				}
+			}
+
+			options.data = null;
+
+			var s = $.extend(true, {}, $.ajaxSettings, options, {
+				contentType : false,
+				processData : false,
+				cache       : false,
+				type        : method || 'POST'
+			});
+
+			if (options.uploadProgress) {
+				// workaround because jqXHR does not expose upload property
+				s.xhr = function() {
+					var xhr = $.ajaxSettings.xhr();
+
+					if (xhr.upload) {
+						xhr.upload.addEventListener('progress', function(event) {
+							var percent = 0;
+							var position = event.loaded || event.position;			/* event.position is deprecated */
+							var total = event.total;
+
+							if (event.lengthComputable) {
+								percent = Math.ceil(position / total * 100);
+							}
+
+							options.uploadProgress(event, position, total, percent);
+						}, false);
+					}
+
+					return xhr;
+				};
+			}
+
+			s.data = null;
+
+			var beforeSend = s.beforeSend;
+
+			s.beforeSend = function(xhr, o) {
+				// Send FormData() provided by user
+				if (options.formData) {
+					o.data = options.formData;
+				} else {
+					o.data = formdata;
+				}
+
+				if (beforeSend) {
+					beforeSend.call(this, xhr, o);
+				}
+			};
+
+			return $.ajax(s);
+		}
+
+		// private function for handling file uploads (hat tip to YAHOO!)
+		function fileUploadIframe(a) {
+			var form = $form[0], el, i, s, g, id, $io, io, xhr, sub, n, timedOut, timeoutHandle;
+			var deferred = $.Deferred();
+
+			// #341
+			deferred.abort = function(status) {
+				xhr.abort(status);
+			};
+
+			if (a) {
+				// ensure that every serialized input is still enabled
+				for (i = 0; i < elements.length; i++) {
+					el = $(elements[i]);
+					if (hasProp) {
+						el.prop('disabled', false);
+					} else {
+						el.removeAttr('disabled');
+					}
+				}
+			}
+
+			s = $.extend(true, {}, $.ajaxSettings, options);
+			s.context = s.context || s;
+			id = 'jqFormIO' + new Date().getTime();
+			var ownerDocument = form.ownerDocument;
+			var $body = $form.closest('body');
+
+			if (s.iframeTarget) {
+				$io = $(s.iframeTarget, ownerDocument);
+				n = $io.attr2('name');
+				if (!n) {
+					$io.attr2('name', id);
+				} else {
+					id = n;
+				}
+
+			} else {
+				$io = $('<iframe name="' + id + '" src="' + s.iframeSrc + '" />', ownerDocument);
+				$io.css({position: 'absolute', top: '-1000px', left: '-1000px'});
+			}
+			io = $io[0];
+
+
+			xhr = { // mock object
+				aborted               : 0,
+				responseText          : null,
+				responseXML           : null,
+				status                : 0,
+				statusText            : 'n/a',
+				getAllResponseHeaders : function() {},
+				getResponseHeader     : function() {},
+				setRequestHeader      : function() {},
+				abort                 : function(status) {
+					var e = (status === 'timeout' ? 'timeout' : 'aborted');
+
+					log('aborting upload... ' + e);
+					this.aborted = 1;
+
+					try { // #214, #257
+						if (io.contentWindow.document.execCommand) {
+							io.contentWindow.document.execCommand('Stop');
+						}
+					} catch (ignore) {}
+
+					$io.attr('src', s.iframeSrc); // abort op in progress
+					xhr.error = e;
+					if (s.error) {
+						s.error.call(s.context, xhr, e, status);
+					}
+
+					if (g) {
+						$.event.trigger('ajaxError', [xhr, s, e]);
+					}
+
+					if (s.complete) {
+						s.complete.call(s.context, xhr, e);
+					}
+				}
+			};
+
+			g = s.global;
+			// trigger ajax global events so that activity/block indicators work like normal
+			if (g && $.active++ === 0) {
+				$.event.trigger('ajaxStart');
+			}
+			if (g) {
+				$.event.trigger('ajaxSend', [xhr, s]);
+			}
+
+			if (s.beforeSend && s.beforeSend.call(s.context, xhr, s) === false) {
+				if (s.global) {
+					$.active--;
+				}
+				deferred.reject();
+
+				return deferred;
+			}
+
+			if (xhr.aborted) {
+				deferred.reject();
+
+				return deferred;
+			}
+
+			// add submitting element to data if we know it
+			sub = form.clk;
+			if (sub) {
+				n = sub.name;
+				if (n && !sub.disabled) {
+					s.extraData = s.extraData || {};
+					s.extraData[n] = sub.value;
+					if (sub.type === 'image') {
+						s.extraData[n + '.x'] = form.clk_x;
+						s.extraData[n + '.y'] = form.clk_y;
+					}
+				}
+			}
+
+			var CLIENT_TIMEOUT_ABORT = 1;
+			var SERVER_ABORT = 2;
+
+			function getDoc(frame) {
+				/* it looks like contentWindow or contentDocument do not
+				 * carry the protocol property in ie8, when running under ssl
+				 * frame.document is the only valid response document, since
+				 * the protocol is know but not on the other two objects. strange?
+				 * "Same origin policy" http://en.wikipedia.org/wiki/Same_origin_policy
+				 */
+
+				var doc = null;
+
+				// IE8 cascading access check
+				try {
+					if (frame.contentWindow) {
+						doc = frame.contentWindow.document;
+					}
+				} catch (err) {
+					// IE8 access denied under ssl & missing protocol
+					log('cannot get iframe.contentWindow document: ' + err);
+				}
+
+				if (doc) { // successful getting content
+					return doc;
+				}
+
+				try { // simply checking may throw in ie8 under ssl or mismatched protocol
+					doc = frame.contentDocument ? frame.contentDocument : frame.document;
+				} catch (err) {
+					// last attempt
+					log('cannot get iframe.contentDocument: ' + err);
+					doc = frame.document;
+				}
+
+				return doc;
+			}
+
+			// Rails CSRF hack (thanks to Yvan Barthelemy)
+			var csrf_token = $('meta[name=csrf-token]').attr('content');
+			var csrf_param = $('meta[name=csrf-param]').attr('content');
+
+			if (csrf_param && csrf_token) {
+				s.extraData = s.extraData || {};
+				s.extraData[csrf_param] = csrf_token;
+			}
+
+			// take a breath so that pending repaints get some cpu time before the upload starts
+			function doSubmit() {
+				// make sure form attrs are set
+				var t = $form.attr2('target'),
+					a = $form.attr2('action'),
+					mp = 'multipart/form-data',
+					et = $form.attr('enctype') || $form.attr('encoding') || mp;
+
+				// update form attrs in IE friendly way
+				form.setAttribute('target', id);
+				if (!method || /post/i.test(method)) {
+					form.setAttribute('method', 'POST');
+				}
+				if (a !== s.url) {
+					form.setAttribute('action', s.url);
+				}
+
+				// ie borks in some cases when setting encoding
+				if (!s.skipEncodingOverride && (!method || /post/i.test(method))) {
+					$form.attr({
+						encoding : 'multipart/form-data',
+						enctype  : 'multipart/form-data'
+					});
+				}
+
+				// support timout
+				if (s.timeout) {
+					timeoutHandle = setTimeout(function() {
+						timedOut = true; cb(CLIENT_TIMEOUT_ABORT);
+					}, s.timeout);
+				}
+
+				// look for server aborts
+				function checkState() {
+					try {
+						var state = getDoc(io).readyState;
+
+						log('state = ' + state);
+						if (state && state.toLowerCase() === 'uninitialized') {
+							setTimeout(checkState, 50);
+						}
+
+					} catch (e) {
+						log('Server abort: ', e, ' (', e.name, ')');
+						cb(SERVER_ABORT);				// eslint-disable-line callback-return
+						if (timeoutHandle) {
+							clearTimeout(timeoutHandle);
+						}
+						timeoutHandle = undefined;
+					}
+				}
+
+				// add "extra" data to form if provided in options
+				var extraInputs = [];
+
+				try {
+					if (s.extraData) {
+						for (var n in s.extraData) {
+							if (s.extraData.hasOwnProperty(n)) {
+								// if using the $.param format that allows for multiple values with the same name
+								if ($.isPlainObject(s.extraData[n]) && s.extraData[n].hasOwnProperty('name') && s.extraData[n].hasOwnProperty('value')) {
+									extraInputs.push(
+									$('<input type="hidden" name="' + s.extraData[n].name + '">', ownerDocument).val(s.extraData[n].value)
+										.appendTo(form)[0]);
+								} else {
+									extraInputs.push(
+									$('<input type="hidden" name="' + n + '">', ownerDocument).val(s.extraData[n])
+										.appendTo(form)[0]);
+								}
+							}
+						}
+					}
+
+					if (!s.iframeTarget) {
+						// add iframe to doc and submit the form
+						$io.appendTo($body);
+					}
+
+					if (io.attachEvent) {
+						io.attachEvent('onload', cb);
+					} else {
+						io.addEventListener('load', cb, false);
+					}
+
+					setTimeout(checkState, 15);
+
+					try {
+						form.submit();
+
+					} catch (err) {
+						// just in case form has element with name/id of 'submit'
+						var submitFn = document.createElement('form').submit;
+
+						submitFn.apply(form);
+					}
+
+				} finally {
+					// reset attrs and remove "extra" input elements
+					form.setAttribute('action', a);
+					form.setAttribute('enctype', et); // #380
+					if (t) {
+						form.setAttribute('target', t);
+					} else {
+						$form.removeAttr('target');
+					}
+					$(extraInputs).remove();
+				}
+			}
+
+			if (s.forceSync) {
+				doSubmit();
+			} else {
+				setTimeout(doSubmit, 10); // this lets dom updates render
+			}
+
+			var data, doc, domCheckCount = 50, callbackProcessed;
+
+			function cb(e) {
+				if (xhr.aborted || callbackProcessed) {
+					return;
+				}
+
+				doc = getDoc(io);
+				if (!doc) {
+					log('cannot access response document');
+					e = SERVER_ABORT;
+				}
+				if (e === CLIENT_TIMEOUT_ABORT && xhr) {
+					xhr.abort('timeout');
+					deferred.reject(xhr, 'timeout');
+
+					return;
+
+				} else if (e === SERVER_ABORT && xhr) {
+					xhr.abort('server abort');
+					deferred.reject(xhr, 'error', 'server abort');
+
+					return;
+				}
+
+				if (!doc || doc.location.href === s.iframeSrc) {
+					// response not received yet
+					if (!timedOut) {
+						return;
+					}
+				}
+
+				if (io.detachEvent) {
+					io.detachEvent('onload', cb);
+				} else {
+					io.removeEventListener('load', cb, false);
+				}
+
+				var status = 'success', errMsg;
+
+				try {
+					if (timedOut) {
+						throw 'timeout';
+					}
+
+					var isXml = s.dataType === 'xml' || doc.XMLDocument || $.isXMLDoc(doc);
+
+					log('isXml=' + isXml);
+
+					if (!isXml && window.opera && (doc.body === null || !doc.body.innerHTML)) {
+						if (--domCheckCount) {
+							// in some browsers (Opera) the iframe DOM is not always traversable when
+							// the onload callback fires, so we loop a bit to accommodate
+							log('requeing onLoad callback, DOM not available');
+							setTimeout(cb, 250);
+
+							return;
+						}
+						// let this fall through because server response could be an empty document
+						// log('Could not access iframe DOM after mutiple tries.');
+						// throw 'DOMException: not available';
+					}
+
+					// log('response detected');
+					var docRoot = doc.body ? doc.body : doc.documentElement;
+
+					xhr.responseText = docRoot ? docRoot.innerHTML : null;
+					xhr.responseXML = doc.XMLDocument ? doc.XMLDocument : doc;
+					if (isXml) {
+						s.dataType = 'xml';
+					}
+					xhr.getResponseHeader = function(header){
+						var headers = {'content-type': s.dataType};
+
+						return headers[header.toLowerCase()];
+					};
+					// support for XHR 'status' & 'statusText' emulation :
+					if (docRoot) {
+						xhr.status = Number(docRoot.getAttribute('status')) || xhr.status;
+						xhr.statusText = docRoot.getAttribute('statusText') || xhr.statusText;
+					}
+
+					var dt = (s.dataType || '').toLowerCase();
+					var scr = /(json|script|text)/.test(dt);
+
+					if (scr || s.textarea) {
+						// see if user embedded response in textarea
+						var ta = doc.getElementsByTagName('textarea')[0];
+
+						if (ta) {
+							xhr.responseText = ta.value;
+							// support for XHR 'status' & 'statusText' emulation :
+							xhr.status = Number(ta.getAttribute('status')) || xhr.status;
+							xhr.statusText = ta.getAttribute('statusText') || xhr.statusText;
+
+						} else if (scr) {
+							// account for browsers injecting pre around json response
+							var pre = doc.getElementsByTagName('pre')[0];
+							var b = doc.getElementsByTagName('body')[0];
+
+							if (pre) {
+								xhr.responseText = pre.textContent ? pre.textContent : pre.innerText;
+							} else if (b) {
+								xhr.responseText = b.textContent ? b.textContent : b.innerText;
+							}
+						}
+
+					} else if (dt === 'xml' && !xhr.responseXML && xhr.responseText) {
+						xhr.responseXML = toXml(xhr.responseText);			// eslint-disable-line no-use-before-define
+					}
+
+					try {
+						data = httpData(xhr, dt, s);						// eslint-disable-line no-use-before-define
+
+					} catch (err) {
+						status = 'parsererror';
+						xhr.error = errMsg = (err || status);
+					}
+
+				} catch (err) {
+					log('error caught: ', err);
+					status = 'error';
+					xhr.error = errMsg = (err || status);
+				}
+
+				if (xhr.aborted) {
+					log('upload aborted');
+					status = null;
+				}
+
+				if (xhr.status) { // we've set xhr.status
+					status = ((xhr.status >= 200 && xhr.status < 300) || xhr.status === 304) ? 'success' : 'error';
+				}
+
+				// ordering of these callbacks/triggers is odd, but that's how $.ajax does it
+				if (status === 'success') {
+					if (s.success) {
+						s.success.call(s.context, data, 'success', xhr);
+					}
+
+					deferred.resolve(xhr.responseText, 'success', xhr);
+
+					if (g) {
+						$.event.trigger('ajaxSuccess', [xhr, s]);
+					}
+
+				} else if (status) {
+					if (typeof errMsg === 'undefined') {
+						errMsg = xhr.statusText;
+					}
+					if (s.error) {
+						s.error.call(s.context, xhr, status, errMsg);
+					}
+					deferred.reject(xhr, 'error', errMsg);
+					if (g) {
+						$.event.trigger('ajaxError', [xhr, s, errMsg]);
+					}
+				}
+
+				if (g) {
+					$.event.trigger('ajaxComplete', [xhr, s]);
+				}
+
+				if (g && !--$.active) {
+					$.event.trigger('ajaxStop');
+				}
+
+				if (s.complete) {
+					s.complete.call(s.context, xhr, status);
+				}
+
+				callbackProcessed = true;
+				if (s.timeout) {
+					clearTimeout(timeoutHandle);
+				}
+
+				// clean up
+				setTimeout(function() {
+					if (!s.iframeTarget) {
+						$io.remove();
+					} else { // adding else to clean up existing iframe response.
+						$io.attr('src', s.iframeSrc);
+					}
+					xhr.responseXML = null;
+				}, 100);
+			}
+
+			var toXml = $.parseXML || function(s, doc) { // use parseXML if available (jQuery 1.5+)
+				if (window.ActiveXObject) {
+					doc = new ActiveXObject('Microsoft.XMLDOM');
+					doc.async = 'false';
+					doc.loadXML(s);
+
+				} else {
+					doc = (new DOMParser()).parseFromString(s, 'text/xml');
+				}
+
+				return (doc && doc.documentElement && doc.documentElement.nodeName !== 'parsererror') ? doc : null;
+			};
+			var parseJSON = $.parseJSON || function(s) {
+				/* jslint evil:true */
+				return window['eval']('(' + s + ')');			// eslint-disable-line dot-notation
+			};
+
+			var httpData = function(xhr, type, s) { // mostly lifted from jq1.4.4
+
+				var ct = xhr.getResponseHeader('content-type') || '',
+					xml = ((type === 'xml' || !type) && ct.indexOf('xml') >= 0),
+					data = xml ? xhr.responseXML : xhr.responseText;
+
+				if (xml && data.documentElement.nodeName === 'parsererror') {
+					if ($.error) {
+						$.error('parsererror');
+					}
+				}
+				if (s && s.dataFilter) {
+					data = s.dataFilter(data, type);
+				}
+				if (typeof data === 'string') {
+					if ((type === 'json' || !type) && ct.indexOf('json') >= 0) {
+						data = parseJSON(data);
+					} else if ((type === 'script' || !type) && ct.indexOf('javascript') >= 0) {
+						$.globalEval(data);
+					}
+				}
+
+				return data;
+			};
+
+			return deferred;
+		}
+	};
+
+	/**
+	 * ajaxForm() provides a mechanism for fully automating form submission.
+	 *
+	 * The advantages of using this method instead of ajaxSubmit() are:
+	 *
+	 * 1: This method will include coordinates for <input type="image"> elements (if the element
+	 *	is used to submit the form).
+	 * 2. This method will include the submit element's name/value data (for the element that was
+	 *	used to submit the form).
+	 * 3. This method binds the submit() method to the form for you.
+	 *
+	 * The options argument for ajaxForm works exactly as it does for ajaxSubmit. ajaxForm merely
+	 * passes the options argument along after properly binding events for submit elements and
+	 * the form itself.
+	 */
+	$.fn.ajaxForm = function(options, data, dataType, onSuccess) {
+		if (typeof options === 'string' || (options === false && arguments.length > 0)) {
+			options = {
+				'url'      : options,
+				'data'     : data,
+				'dataType' : dataType
+			};
+
+			if (typeof onSuccess === 'function') {
+				options.success = onSuccess;
+			}
+		}
+
+		options = options || {};
+		options.delegation = options.delegation && $.isFunction($.fn.on);
+
+		// in jQuery 1.3+ we can fix mistakes with the ready state
+		if (!options.delegation && this.length === 0) {
+			var o = {s: this.selector, c: this.context};
+
+			if (!$.isReady && o.s) {
+				log('DOM not ready, queuing ajaxForm');
+				$(function() {
+					$(o.s, o.c).ajaxForm(options);
+				});
+
+				return this;
+			}
+
+			// is your DOM ready?  http://docs.jquery.com/Tutorials:Introducing_$(document).ready()
+			log('terminating; zero elements found by selector' + ($.isReady ? '' : ' (DOM not ready)'));
+
+			return this;
+		}
+
+		if (options.delegation) {
+			$(document)
+				.off('submit.form-plugin', this.selector, doAjaxSubmit)
+				.off('click.form-plugin', this.selector, captureSubmittingElement)
+				.on('submit.form-plugin', this.selector, options, doAjaxSubmit)
+				.on('click.form-plugin', this.selector, options, captureSubmittingElement);
+
+			return this;
+		}
+
+		return this.ajaxFormUnbind()
+			.on('submit.form-plugin', options, doAjaxSubmit)
+			.on('click.form-plugin', options, captureSubmittingElement);
+	};
+
+	// private event handlers
+	function doAjaxSubmit(e) {
+		/* jshint validthis:true */
+		var options = e.data;
+
+		if (!e.isDefaultPrevented()) { // if event has been canceled, don't proceed
+			e.preventDefault();
+			$(e.target).closest('form').ajaxSubmit(options); // #365
+		}
+	}
+
+	function captureSubmittingElement(e) {
+		/* jshint validthis:true */
+		var target = e.target;
+		var $el = $(target);
+
+		if (!$el.is('[type=submit],[type=image]')) {
+			// is this a child element of the submit el?  (ex: a span within a button)
+			var t = $el.closest('[type=submit]');
+
+			if (t.length === 0) {
+				return;
+			}
+			target = t[0];
+		}
+
+		var form = target.form;
+
+		form.clk = target;
+
+		if (target.type === 'image') {
+			if (typeof e.offsetX !== 'undefined') {
+				form.clk_x = e.offsetX;
+				form.clk_y = e.offsetY;
+
+			} else if (typeof $.fn.offset === 'function') {
+				var offset = $el.offset();
+
+				form.clk_x = e.pageX - offset.left;
+				form.clk_y = e.pageY - offset.top;
+
+			} else {
+				form.clk_x = e.pageX - target.offsetLeft;
+				form.clk_y = e.pageY - target.offsetTop;
+			}
+		}
+		// clear form vars
+		setTimeout(function() {
+			form.clk = form.clk_x = form.clk_y = null;
+		}, 100);
+	}
+
+
+	// ajaxFormUnbind unbinds the event handlers that were bound by ajaxForm
+	$.fn.ajaxFormUnbind = function() {
+		return this.off('submit.form-plugin click.form-plugin');
+	};
+
+	/**
+	 * formToArray() gathers form element data into an array of objects that can
+	 * be passed to any of the following ajax functions: $.get, $.post, or load.
+	 * Each object in the array has both a 'name' and 'value' property. An example of
+	 * an array for a simple login form might be:
+	 *
+	 * [ { name: 'username', value: 'jresig' }, { name: 'password', value: 'secret' } ]
+	 *
+	 * It is this array that is passed to pre-submit callback functions provided to the
+	 * ajaxSubmit() and ajaxForm() methods.
+	 */
+	$.fn.formToArray = function(semantic, elements, filtering) {
+		var a = [];
+
+		if (this.length === 0) {
+			return a;
+		}
+
+		var form = this[0];
+		var formId = this.attr('id');
+		var els = (semantic || typeof form.elements === 'undefined') ? form.getElementsByTagName('*') : form.elements;
+		var els2;
+
+		if (els) {
+			els = $.makeArray(els); // convert to standard array
+		}
+
+		// #386; account for inputs outside the form which use the 'form' attribute
+		// FinesseRus: in non-IE browsers outside fields are already included in form.elements.
+		if (formId && (semantic || /(Edge|Trident)\//.test(navigator.userAgent))) {
+			els2 = $(':input[form="' + formId + '"]').get(); // hat tip @thet
+			if (els2.length) {
+				els = (els || []).concat(els2);
+			}
+		}
+
+		if (!els || !els.length) {
+			return a;
+		}
+
+		if ($.isFunction(filtering)) {
+			els = $.map(els, filtering);
+		}
+
+		var i, j, n, v, el, max, jmax;
+
+		for (i = 0, max = els.length; i < max; i++) {
+			el = els[i];
+			n = el.name;
+			if (!n || el.disabled) {
+				continue;
+			}
+
+			if (semantic && form.clk && el.type === 'image') {
+				// handle image inputs on the fly when semantic == true
+				if (form.clk === el) {
+					a.push({name: n, value: $(el).val(), type: el.type});
+					a.push({name: n + '.x', value: form.clk_x}, {name: n + '.y', value: form.clk_y});
+				}
+				continue;
+			}
+
+			v = $.fieldValue(el, true);
+			if (v && v.constructor === Array) {
+				if (elements) {
+					elements.push(el);
+				}
+				for (j = 0, jmax = v.length; j < jmax; j++) {
+					a.push({name: n, value: v[j]});
+				}
+
+			} else if (feature.fileapi && el.type === 'file') {
+				if (elements) {
+					elements.push(el);
+				}
+
+				var files = el.files;
+
+				if (files.length) {
+					for (j = 0; j < files.length; j++) {
+						a.push({name: n, value: files[j], type: el.type});
+					}
+				} else {
+					// #180
+					a.push({name: n, value: '', type: el.type});
+				}
+
+			} else if (v !== null && typeof v !== 'undefined') {
+				if (elements) {
+					elements.push(el);
+				}
+				a.push({name: n, value: v, type: el.type, required: el.required});
+			}
+		}
+
+		if (!semantic && form.clk) {
+			// input type=='image' are not found in elements array! handle it here
+			var $input = $(form.clk), input = $input[0];
+
+			n = input.name;
+
+			if (n && !input.disabled && input.type === 'image') {
+				a.push({name: n, value: $input.val()});
+				a.push({name: n + '.x', value: form.clk_x}, {name: n + '.y', value: form.clk_y});
+			}
+		}
+
+		return a;
+	};
+
+	/**
+	 * Serializes form data into a 'submittable' string. This method will return a string
+	 * in the format: name1=value1&amp;name2=value2
+	 */
+	$.fn.formSerialize = function(semantic) {
+		// hand off to jQuery.param for proper encoding
+		return $.param(this.formToArray(semantic));
+	};
+
+	/**
+	 * Serializes all field elements in the jQuery object into a query string.
+	 * This method will return a string in the format: name1=value1&amp;name2=value2
+	 */
+	$.fn.fieldSerialize = function(successful) {
+		var a = [];
+
+		this.each(function() {
+			var n = this.name;
+
+			if (!n) {
+				return;
+			}
+
+			var v = $.fieldValue(this, successful);
+
+			if (v && v.constructor === Array) {
+				for (var i = 0, max = v.length; i < max; i++) {
+					a.push({name: n, value: v[i]});
+				}
+
+			} else if (v !== null && typeof v !== 'undefined') {
+				a.push({name: this.name, value: v});
+			}
+		});
+
+		// hand off to jQuery.param for proper encoding
+		return $.param(a);
+	};
+
+	/**
+	 * Returns the value(s) of the element in the matched set. For example, consider the following form:
+	 *
+	 *	<form><fieldset>
+	 *		<input name="A" type="text">
+	 *		<input name="A" type="text">
+	 *		<input name="B" type="checkbox" value="B1">
+	 *		<input name="B" type="checkbox" value="B2">
+	 *		<input name="C" type="radio" value="C1">
+	 *		<input name="C" type="radio" value="C2">
+	 *	</fieldset></form>
+	 *
+	 *	var v = $('input[type=text]').fieldValue();
+	 *	// if no values are entered into the text inputs
+	 *	v === ['','']
+	 *	// if values entered into the text inputs are 'foo' and 'bar'
+	 *	v === ['foo','bar']
+	 *
+	 *	var v = $('input[type=checkbox]').fieldValue();
+	 *	// if neither checkbox is checked
+	 *	v === undefined
+	 *	// if both checkboxes are checked
+	 *	v === ['B1', 'B2']
+	 *
+	 *	var v = $('input[type=radio]').fieldValue();
+	 *	// if neither radio is checked
+	 *	v === undefined
+	 *	// if first radio is checked
+	 *	v === ['C1']
+	 *
+	 * The successful argument controls whether or not the field element must be 'successful'
+	 * (per http://www.w3.org/TR/html4/interact/forms.html#successful-controls).
+	 * The default value of the successful argument is true. If this value is false the value(s)
+	 * for each element is returned.
+	 *
+	 * Note: This method *always* returns an array. If no valid value can be determined the
+	 *	array will be empty, otherwise it will contain one or more values.
+	 */
+	$.fn.fieldValue = function(successful) {
+		for (var val = [], i = 0, max = this.length; i < max; i++) {
+			var el = this[i];
+			var v = $.fieldValue(el, successful);
+
+			if (v === null || typeof v === 'undefined' || (v.constructor === Array && !v.length)) {
+				continue;
+			}
+
+			if (v.constructor === Array) {
+				$.merge(val, v);
+			} else {
+				val.push(v);
+			}
+		}
+
+		return val;
+	};
+
+	/**
+	 * Returns the value of the field element.
+	 */
+	$.fieldValue = function(el, successful) {
+		var n = el.name, t = el.type, tag = el.tagName.toLowerCase();
+
+		if (typeof successful === 'undefined') {
+			successful = true;
+		}
+
+		/* eslint-disable no-mixed-operators */
+		if (successful && (!n || el.disabled || t === 'reset' || t === 'button' ||
+			(t === 'checkbox' || t === 'radio') && !el.checked ||
+			(t === 'submit' || t === 'image') && el.form && el.form.clk !== el ||
+			tag === 'select' && el.selectedIndex === -1)) {
+		/* eslint-enable no-mixed-operators */
+			return null;
+		}
+
+		if (tag === 'select') {
+			var index = el.selectedIndex;
+
+			if (index < 0) {
+				return null;
+			}
+
+			var a = [], ops = el.options;
+			var one = (t === 'select-one');
+			var max = (one ? index + 1 : ops.length);
+
+			for (var i = (one ? index : 0); i < max; i++) {
+				var op = ops[i];
+
+				if (op.selected && !op.disabled) {
+					var v = op.value;
+
+					if (!v) { // extra pain for IE...
+						v = (op.attributes && op.attributes.value && !(op.attributes.value.specified)) ? op.text : op.value;
+					}
+
+					if (one) {
+						return v;
+					}
+
+					a.push(v);
+				}
+			}
+
+			return a;
+		}
+
+		return $(el).val().replace(rCRLF, '\r\n');
+	};
+
+	/**
+	 * Clears the form data. Takes the following actions on the form's input fields:
+	 *  - input text fields will have their 'value' property set to the empty string
+	 *  - select elements will have their 'selectedIndex' property set to -1
+	 *  - checkbox and radio inputs will have their 'checked' property set to false
+	 *  - inputs of type submit, button, reset, and hidden will *not* be effected
+	 *  - button elements will *not* be effected
+	 */
+	$.fn.clearForm = function(includeHidden) {
+		return this.each(function() {
+			$('input,select,textarea', this).clearFields(includeHidden);
+		});
+	};
+
+	/**
+	 * Clears the selected form elements.
+	 */
+	$.fn.clearFields = $.fn.clearInputs = function(includeHidden) {
+		var re = /^(?:color|date|datetime|email|month|number|password|range|search|tel|text|time|url|week)$/i; // 'hidden' is not in this list
+
+		return this.each(function() {
+			var t = this.type, tag = this.tagName.toLowerCase();
+
+			if (re.test(t) || tag === 'textarea') {
+				this.value = '';
+
+			} else if (t === 'checkbox' || t === 'radio') {
+				this.checked = false;
+
+			} else if (tag === 'select') {
+				this.selectedIndex = -1;
+
+			} else if (t === 'file') {
+				if (/MSIE/.test(navigator.userAgent)) {
+					$(this).replaceWith($(this).clone(true));
+				} else {
+					$(this).val('');
+				}
+
+			} else if (includeHidden) {
+				// includeHidden can be the value true, or it can be a selector string
+				// indicating a special test; for example:
+				// $('#myForm').clearForm('.special:hidden')
+				// the above would clean hidden inputs that have the class of 'special'
+				if ((includeHidden === true && /hidden/.test(t)) ||
+					(typeof includeHidden === 'string' && $(this).is(includeHidden))) {
+					this.value = '';
+				}
+			}
+		});
+	};
+
+
+	/**
+	 * Resets the form data or individual elements. Takes the following actions
+	 * on the selected tags:
+	 * - all fields within form elements will be reset to their original value
+	 * - input / textarea / select fields will be reset to their original value
+	 * - option / optgroup fields (for multi-selects) will defaulted individually
+	 * - non-multiple options will find the right select to default
+	 * - label elements will be searched against its 'for' attribute
+	 * - all others will be searched for appropriate children to default
+	 */
+	$.fn.resetForm = function() {
+		return this.each(function() {
+			var el = $(this);
+			var tag = this.tagName.toLowerCase();
+
+			switch (tag) {
+			case 'input':
+				this.checked = this.defaultChecked;
+					// fall through
+
+			case 'textarea':
+				this.value = this.defaultValue;
+
+				return true;
+
+			case 'option':
+			case 'optgroup':
+				var select = el.parents('select');
+
+				if (select.length && select[0].multiple) {
+					if (tag === 'option') {
+						this.selected = this.defaultSelected;
+					} else {
+						el.find('option').resetForm();
+					}
+				} else {
+					select.resetForm();
+				}
+
+				return true;
+
+			case 'select':
+				el.find('option').each(function(i) {				// eslint-disable-line consistent-return
+					this.selected = this.defaultSelected;
+					if (this.defaultSelected && !el[0].multiple) {
+						el[0].selectedIndex = i;
+
+						return false;
+					}
+				});
+
+				return true;
+
+			case 'label':
+				var forEl = $(el.attr('for'));
+				var list = el.find('input,select,textarea');
+
+				if (forEl[0]) {
+					list.unshift(forEl[0]);
+				}
+
+				list.resetForm();
+
+				return true;
+
+			case 'form':
+					// guard against an input with the name of 'reset'
+					// note that IE reports the reset function as an 'object'
+				if (typeof this.reset === 'function' || (typeof this.reset === 'object' && !this.reset.nodeType)) {
+					this.reset();
+				}
+
+				return true;
+
+			default:
+				el.find('form,input,label,select,textarea').resetForm();
+
+				return true;
+			}
+		});
+	};
+
+	/**
+	 * Enables or disables any matching elements.
+	 */
+	$.fn.enable = function(b) {
+		if (typeof b === 'undefined') {
+			b = true;
+		}
+
+		return this.each(function() {
+			this.disabled = !b;
+		});
+	};
+
+	/**
+	 * Checks/unchecks any matching checkboxes or radio buttons and
+	 * selects/deselects and matching option elements.
+	 */
+	$.fn.selected = function(select) {
+		if (typeof select === 'undefined') {
+			select = true;
+		}
+
+		return this.each(function() {
+			var t = this.type;
+
+			if (t === 'checkbox' || t === 'radio') {
+				this.checked = select;
+
+			} else if (this.tagName.toLowerCase() === 'option') {
+				var $sel = $(this).parent('select');
+
+				if (select && $sel[0] && $sel[0].type === 'select-one') {
+					// deselect all other options
+					$sel.find('option').selected(false);
+				}
+
+				this.selected = select;
+			}
+		});
+	};
+
+	// expose debug var
+	$.fn.ajaxSubmit.debug = false;
+
+	// helper fn for console logging
+	function log() {
+		if (!$.fn.ajaxSubmit.debug) {
+			return;
+		}
+
+		var msg = '[jquery.form] ' + Array.prototype.join.call(arguments, '');
+
+		if (window.console && window.console.log) {
+			window.console.log(msg);
+
+		} else if (window.opera && window.opera.postError) {
+			window.opera.postError(msg);
+		}
+	}
+}));
diff --git a/src/wp-includes/js/jquery/jquery.form.min.js b/src/wp-includes/js/jquery/jquery.form.min.js
index cf23d4a10c..0e91b17274 100644
--- a/src/wp-includes/js/jquery/jquery.form.min.js
+++ b/src/wp-includes/js/jquery/jquery.form.min.js
@@ -1,11 +1,12 @@
 /*!
  * jQuery Form Plugin
- * version: 3.37.0-2013.07.11
- * @requires jQuery v1.5 or later
- * Copyright (c) 2013 M. Alsup
- * Examples and documentation at: http://malsup.com/jquery/form/
- * Project repository: https://github.com/malsup/form
- * Dual licensed under the MIT and GPL licenses.
- * https://github.com/malsup/form#copyright-and-license
+ * version: 4.2.1
+ * Requires jQuery v1.7 or later
+ * Copyright 2017 Kevin Morris
+ * Copyright 2006 M. Alsup
+ * Project repository: https://github.com/jquery-form/form
+ * Dual licensed under the MIT and LGPLv3 licenses.
+ * https://github.com/jquery-form/form#license
  */
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+//# sourceMappingURL=jquery.form.min.js.map
diff --git a/src/wp-includes/script-loader.php b/src/wp-includes/script-loader.php
index 3c3659ea14..5761dfe3df 100644
--- a/src/wp-includes/script-loader.php
+++ b/src/wp-includes/script-loader.php
@@ -248,7 +248,7 @@ function wp_default_scripts( &$scripts ) {
 	) );
 
 	// deprecated, not used in core, most functionality is included in jQuery 1.3
-	$scripts->add( 'jquery-form', "/wp-includes/js/jquery/jquery.form$suffix.js", array('jquery'), '3.37.0', 1 );
+	$scripts->add( 'jquery-form', "/wp-includes/js/jquery/jquery.form$suffix.js", array('jquery'), '4.2.1', 1 );
 
 	// jQuery plugins
 	$scripts->add( 'jquery-color', "/wp-includes/js/jquery/jquery.color.min.js", array('jquery'), '2.1.1', 1 );