Refs #3360 updating the jquery form plugin

git-svn-id: http://code.elgg.org/elgg/trunk@9134 36083f99-b078-4883-b0ff-0f9b5a30f544

1 files changed, 666 insertions, 484 deletions

diff --git a/vendors/jquery/jquery.form.js b/vendors/jquery/jquery.form.js
index c027f19c0..c0fba53cf 100644
--- a/vendors/jquery/jquery.form.js
+++ b/vendors/jquery/jquery.form.js
@@ -1,7 +1,7 @@
-/*
+/*!
  * jQuery Form Plugin
- * version: 2.28 (10-MAY-2009)
- * @requires jQuery v1.2.2 or later
+ * version: 2.73 (03-MAY-2011)
+ * @requires jQuery v1.3.2 or later
  *
  * Examples and documentation at: http://malsup.com/jquery/form/
  * Dual licensed under the MIT and GPL licenses:
@@ -11,32 +11,32 @@
 ;(function($) {
 
 /*
-    Usage Note:
-    -----------
-    Do not use both ajaxSubmit and ajaxForm on the same form.  These
-    functions are intended to be exclusive.  Use ajaxSubmit if you want
-    to bind your own submit handler to the form.  For example,
-
-    $(document).ready(function() {
-        $('#myForm').bind('submit', function() {
-            $(this).ajaxSubmit({
-                target: '#output'
-            });
-            return false; // <-- important!
-        });
-    });
-
-    Use ajaxForm when you want the plugin to manage all the event binding
-    for you.  For example,
-
-    $(document).ready(function() {
-        $('#myForm').ajaxForm({
-            target: '#output'
-        });
-    });
-
-    When using ajaxForm, the ajaxSubmit function will be invoked for you
-    at the appropriate time.
+	Usage Note:
+	-----------
+	Do not use both ajaxSubmit and ajaxForm on the same form.  These
+	functions are intended to be exclusive.  Use ajaxSubmit if you want
+	to bind your own submit handler to the form.  For example,
+
+	$(document).ready(function() {
+		$('#myForm').bind('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'
+		});
+	});
+
+	When using ajaxForm, the ajaxSubmit function will be invoked for you
+	at the appropriate time.
 */
 
 /**
@@ -44,304 +44,426 @@
  * an HTML form using AJAX.
  */
 $.fn.ajaxSubmit = function(options) {
-    // fast fail if nothing selected (http://dev.jquery.com/ticket/2752)
-    if (!this.length) {
-        log('ajaxSubmit: skipping submit process - no element selected');
-        return this;
-    }
-
-    if (typeof options == 'function')
-        options = { success: options };
-
-    var url = $.trim(this.attr('action'));
-    if (url) {
-	    // clean url (don't include hash vaue)
-	    url = (url.match(/^([^#]+)/)||[])[1];
-   	}
-   	url = url || window.location.href || ''
-
-    options = $.extend({
-        url:  url,
-        type: this.attr('method') || 'GET'
-    }, 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 a = this.formToArray(options.semantic);
-    if (options.data) {
-        options.extraData = options.data;
-        for (var n in options.data) {
-          if(options.data[n] instanceof Array) {
-            for (var k in options.data[n])
-              a.push( { name: n, value: options.data[n][k] } );
-          }
-          else
-             a.push( { name: n, value: options.data[n] } );
-        }
-    }
-
-    // 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);
-
-    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 $form = this, callbacks = [];
-    if (options.resetForm) callbacks.push(function() { $form.resetForm(); });
-    if (options.clearForm) callbacks.push(function() { $form.clearForm(); });
-
-    // 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) {
-            $(options.target).html(data).each(oldSuccess, arguments);
-        });
-    }
-    else if (options.success)
-        callbacks.push(options.success);
-
-    options.success = function(data, status) {
-        for (var i=0, max=callbacks.length; i < max; i++)
-            callbacks[i].apply(options, [data, status, $form]);
-    };
-
-    // are there files to upload?
-    var files = $('input:file', this).fieldValue();
-    var found = false;
-    for (var j=0; j < files.length; j++)
-        if (files[j])
-            found = true;
-
-	var multipart = false;
-//	var mp = 'multipart/form-data';
-//	multipart = ($form.attr('enctype') == mp || $form.attr('encoding') == mp);
-
-    // options.iframe allows user to force iframe mode
-   if (options.iframe || found || multipart) {
-       // 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, fileUpload);
-       else
-           fileUpload();
-       }
-   else
-       $.ajax(options);
-
-    // fire 'notify' event
-    this.trigger('form-submit-notify', [this, options]);
-    return this;
-
-
-    // private function for handling file uploads (hat tip to YAHOO!)
-    function fileUpload() {
-        var form = $form[0];
-
-        if ($(':input[name=submit]', form).length) {
-            alert('Error: Form elements must not be named "submit".');
-            return;
-        }
-
-        var opts = $.extend({}, $.ajaxSettings, options);
-		var s = $.extend(true, {}, $.extend(true, {}, $.ajaxSettings), opts);
-
-        var id = 'jqFormIO' + (new Date().getTime());
-        var $io = $('<iframe id="' + id + '" name="' + id + '" src="about:blank" />');
-        var io = $io[0];
-
-        $io.css({ position: 'absolute', top: '-1000px', left: '-1000px' });
-
-        var xhr = { // mock object
-            aborted: 0,
-            responseText: null,
-            responseXML: null,
-            status: 0,
-            statusText: 'n/a',
-            getAllResponseHeaders: function() {},
-            getResponseHeader: function() {},
-            setRequestHeader: function() {},
-            abort: function() {
-                this.aborted = 1;
-                $io.attr('src','about:blank'); // abort op in progress
-            }
-        };
-
-        var g = opts.global;
-        // trigger ajax global events so that activity/block indicators work like normal
-        if (g && ! $.active++) $.event.trigger("ajaxStart");
-        if (g) $.event.trigger("ajaxSend", [xhr, opts]);
-
-		if (s.beforeSend && s.beforeSend(xhr, s) === false) {
-			s.global && $.active--;
+	// fast fail if nothing selected (http://dev.jquery.com/ticket/2752)
+	if (!this.length) {
+		log('ajaxSubmit: skipping submit process - no element selected');
+		return this;
+	}
+
+	if (typeof options == 'function') {
+		options = { success: options };
+	}
+
+	var action = this.attr('action');
+	var url = (typeof action === 'string') ? $.trim(action) : '';
+	if (url) {
+		// clean url (don't include hash vaue)
+		url = (url.match(/^([^#]+)/)||[])[1];
+	}
+	url = url || window.location.href || '';
+
+	options = $.extend(true, {
+		url:  url,
+		success: $.ajaxSettings.success,
+		type: this[0].getAttribute('method') || 'GET', // IE7 massage (see issue 57)
+		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 n,v,a = this.formToArray(options.semantic);
+	if (options.data) {
+		options.extraData = options.data;
+		for (n in options.data) {
+			if(options.data[n] instanceof Array) {
+				for (var k in options.data[n]) {
+					a.push( { name: n, value: options.data[n][k] } );
+				}
+			}
+			else {
+				v = options.data[n];
+				v = $.isFunction(v) ? v() : v; // if value is fn, invoke it
+				a.push( { name: n, value: v } );
+			}
+		}
+	}
+
+	// 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);
+
+	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 $form = this, callbacks = [];
+	if (options.resetForm) {
+		callbacks.push(function() { $form.resetForm(); });
+	}
+	if (options.clearForm) {
+		callbacks.push(function() { $form.clearForm(); });
+	}
+
+	// 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 || options;   // 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]);
+		}
+	};
+
+	// are there files to upload?
+	var fileInputs = $('input:file', this).length > 0;
+	var mp = 'multipart/form-data';
+	var multipart = ($form.attr('enctype') == mp || $form.attr('encoding') == mp);
+
+	// 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 && (fileInputs || options.iframe || multipart)) {
+	   // 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, fileUpload);
+		}
+	   else {
+		   fileUpload();
+		}
+   }
+   else {
+		$.ajax(options);
+   }
+
+	// fire 'notify' event
+	this.trigger('form-submit-notify', [this, options]);
+	return this;
+
+
+	// private function for handling file uploads (hat tip to YAHOO!)
+	function fileUpload() {
+		var form = $form[0];
+
+		if ($(':input[name=submit],:input[id=submit]', form).length) {
+			// if there is an input with a name or id of 'submit' then we won't be
+			// able to invoke the submit fn on the form (at least not x-browser)
+			alert('Error: Form elements must not have name or id of "submit".');
+			return;
+		}
+		
+		var s = $.extend(true, {}, $.ajaxSettings, options);
+		s.context = s.context || s;
+		var id = 'jqFormIO' + (new Date().getTime()), fn = '_'+id;
+		var $io = $('<iframe id="' + id + '" name="' + id + '" src="'+ s.iframeSrc +'" />');
+		var io = $io[0];
+
+		$io.css({ position: 'absolute', top: '-1000px', left: '-1000px' });
+
+		var 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;
+				$io.attr('src', s.iframeSrc); // abort op in progress
+				xhr.error = e;
+				s.error && s.error.call(s.context, xhr, e, e);
+				g && $.event.trigger("ajaxError", [xhr, s, e]);
+				s.complete && s.complete.call(s.context, xhr, e);
+			}
+		};
+
+		var g = s.global;
+		// trigger ajax global events so that activity/block indicators work like normal
+		if (g && ! $.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--;
+			}
 			return;
-        }
-        if (xhr.aborted)
-            return;
-
-        var cbInvoked = 0;
-        var timedOut = 0;
-
-        // add submitting element to data if we know it
-        var sub = form.clk;
-        if (sub) {
-            var n = sub.name;
-            if (n && !sub.disabled) {
-                options.extraData = options.extraData || {};
-                options.extraData[n] = sub.value;
-                if (sub.type == "image") {
-                    options.extraData[name+'.x'] = form.clk_x;
-                    options.extraData[name+'.y'] = form.clk_y;
-                }
-            }
-        }
-
-        // take a breath so that pending repaints get some cpu time before the upload starts
-        setTimeout(function() {
-            // make sure form attrs are set
-            var t = $form.attr('target'), a = $form.attr('action');
+		}
+		if (xhr.aborted) {
+			return;
+		}
+
+		var timedOut = 0, timeoutHandle;
+
+		// add submitting element to data if we know it
+		var sub = form.clk;
+		if (sub) {
+			var 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;
+				}
+			}
+		}
+
+		// 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.attr('target'), a = $form.attr('action');
 
 			// update form attrs in IE friendly way
 			form.setAttribute('target',id);
-			if (form.getAttribute('method') != 'POST')
+			if (form.getAttribute('method') != 'POST') {
 				form.setAttribute('method', 'POST');
-			if (form.getAttribute('action') != opts.url)
-				form.setAttribute('action', opts.url);
-
-            // ie borks in some cases when setting encoding
-            if (! options.skipEncodingOverride) {
-                $form.attr({
-                    encoding: 'multipart/form-data',
-                    enctype:  'multipart/form-data'
-                });
-            }
-
-            // support timout
-            if (opts.timeout)
-                setTimeout(function() { timedOut = true; cb(); }, opts.timeout);
-
-            // add "extra" data to form if provided in options
-            var extraInputs = [];
-            try {
-                if (options.extraData)
-                    for (var n in options.extraData)
-                        extraInputs.push(
-                            $('<input type="hidden" name="'+n+'" value="'+options.extraData[n]+'" />')
-                                .appendTo(form)[0]);
-
-                // add iframe to doc and submit the form
-                $io.appendTo('body');
+			}
+			if (form.getAttribute('action') != s.url) {
+				form.setAttribute('action', s.url);
+			}
+
+			// ie borks in some cases when setting encoding
+			if (! s.skipEncodingOverride) {
+				$form.attr({
+					encoding: 'multipart/form-data',
+					enctype:  'multipart/form-data'
+				});
+			}
+
+			// support timout
+			if (s.timeout) {
+				timeoutHandle = setTimeout(function() { timedOut = true; cb(true); }, s.timeout);
+			}
+
+			// add "extra" data to form if provided in options
+			var extraInputs = [];
+			try {
+				if (s.extraData) {
+					for (var n in s.extraData) {
+						extraInputs.push(
+							$('<input type="hidden" name="'+n+'" value="'+s.extraData[n]+'" />')
+								.appendTo(form)[0]);
+					}
+				}
+
+				// add iframe to doc and submit the form
+				$io.appendTo('body');
                 io.attachEvent ? io.attachEvent('onload', cb) : io.addEventListener('load', cb, false);
-                form.submit();
-            }
-            finally {
-                // reset attrs and remove "extra" input elements
+				form.submit();
+			}
+			finally {
+				// reset attrs and remove "extra" input elements
 				form.setAttribute('action',a);
-                t ? form.setAttribute('target', t) : $form.removeAttr('target');
-                $(extraInputs).remove();
-            }
-        }, 10);
-
-        var nullCheckFlag = 0;
-
-        function cb() {
-            if (cbInvoked++) return;
-
+				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;
+			}
+			if (e === true && xhr) {
+				xhr.abort('timeout');
+				return;
+			}
+			
+			var doc = io.contentWindow ? io.contentWindow.document : io.contentDocument ? io.contentDocument : io.document;
+			if (!doc || doc.location.href == s.iframeSrc) {
+				// response not received yet
+				if (!timedOut)
+					return;
+			}
             io.detachEvent ? io.detachEvent('onload', cb) : io.removeEventListener('load', cb, false);
 
-            var ok = true;
-            try {
-                if (timedOut) throw 'timeout';
-                // extract the server response from the iframe
-                var data, doc;
-
-                doc = io.contentWindow ? io.contentWindow.document : io.contentDocument ? io.contentDocument : io.document;
-
-                if ((doc.body == null || doc.body.innerHTML == '') && !nullCheckFlag) {
-                    // in some browsers (cough, Opera 9.2.x) the iframe DOM is not always traversable when
-                    // the onload callback fires, so we give them a 2nd chance
-                    nullCheckFlag = 1;
-                    cbInvoked--;
-                    setTimeout(cb, 100);
-                    return;
-                }
-
-                xhr.responseText = doc.body ? doc.body.innerHTML : null;
-                xhr.responseXML = doc.XMLDocument ? doc.XMLDocument : doc;
-                xhr.getResponseHeader = function(header){
-                    var headers = {'content-type': opts.dataType};
-                    return headers[header];
-                };
-
-                if (opts.dataType == 'json' || opts.dataType == 'script') {
-                    var ta = doc.getElementsByTagName('textarea')[0];
-                    xhr.responseText = ta ? ta.value : xhr.responseText;
-                }
-                else if (opts.dataType == 'xml' && !xhr.responseXML && xhr.responseText != null) {
-                    xhr.responseXML = toXml(xhr.responseText);
-                }
-                data = $.httpData(xhr, opts.dataType);
-            }
-            catch(e){
-                ok = false;
-                $.handleError(opts, xhr, 'error', e);
-            }
-
-            // ordering of these callbacks/triggers is odd, but that's how $.ajax does it
-            if (ok) {
-                opts.success(data, 'success');
-                if (g) $.event.trigger("ajaxSuccess", [xhr, opts]);
-            }
-            if (g) $.event.trigger("ajaxComplete", [xhr, opts]);
-            if (g && ! --$.active) $.event.trigger("ajaxStop");
-            if (opts.complete) opts.complete(xhr, ok ? 'success' : 'error');
-
-            // clean up
-            setTimeout(function() {
-                $io.remove();
-                xhr.responseXML = null;
-            }, 100);
-        };
-
-        function toXml(s, doc) {
-            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.tagName != 'parsererror') ? doc : null;
-        };
-    };
+			var ok = true;
+			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');
+				xhr.responseText = doc.body ? doc.body.innerHTML : doc.documentElement ? doc.documentElement.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];
+				};
+
+				var scr = /(json|script|text)/.test(s.dataType);
+				if (scr || s.textarea) {
+					// see if user embedded response in textarea
+					var ta = doc.getElementsByTagName('textarea')[0];
+					if (ta) {
+						xhr.responseText = ta.value;
+					}
+					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;
+						}
+						else if (b) {
+							xhr.responseText = b.innerHTML;
+						}
+					}			  
+				}
+				else if (s.dataType == 'xml' && !xhr.responseXML && xhr.responseText != null) {
+					xhr.responseXML = toXml(xhr.responseText);
+				}
+				
+				data = httpData(xhr, s.dataType, s);
+			}
+			catch(e){
+				log('error caught:',e);
+				ok = false;
+				xhr.error = e;
+				s.error && s.error.call(s.context, xhr, 'error', e);
+				g && $.event.trigger("ajaxError", [xhr, s, e]);
+			}
+			
+			if (xhr.aborted) {
+				log('upload aborted');
+				ok = false;
+			}
+
+			// ordering of these callbacks/triggers is odd, but that's how $.ajax does it
+			if (ok) {
+				s.success && s.success.call(s.context, data, 'success', xhr);
+				g && $.event.trigger("ajaxSuccess", [xhr, s]);
+			}
+			
+			g && $.event.trigger("ajaxComplete", [xhr, s]);
+
+			if (g && ! --$.active) {
+				$.event.trigger("ajaxStop");
+			}
+			
+			s.complete && s.complete.call(s.context, xhr, ok ? 'success' : 'error');
+
+			callbackProcessed = true;
+			if (s.timeout)
+				clearTimeout(timeoutHandle);
+
+			// clean up
+			setTimeout(function() {
+				$io.removeData('form-plugin-onload');
+				$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) {
+			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') {
+				$.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;
+		};
+	}
 };
 
 /**
@@ -350,9 +472,9 @@ $.fn.ajaxSubmit = function(options) {
  * 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).
+ *	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).
+ *	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
@@ -360,40 +482,60 @@ $.fn.ajaxSubmit = function(options) {
  * the form itself.
  */
 $.fn.ajaxForm = function(options) {
-    return this.ajaxFormUnbind().bind('submit.form-plugin',function() {
-        $(this).ajaxSubmit(options);
-        return false;
-    }).each(function() {
-        // store options in hash
-        $(":submit,input:image", this).bind('click.form-plugin',function(e) {
-            var form = this.form;
-            form.clk = this;
-            if (this.type == 'image') {
-                if (e.offsetX != undefined) {
-                    form.clk_x = e.offsetX;
-                    form.clk_y = e.offsetY;
-                } else if (typeof $.fn.offset == 'function') { // try to use dimensions plugin
-                    var offset = $(this).offset();
-                    form.clk_x = e.pageX - offset.left;
-                    form.clk_y = e.pageY - offset.top;
-                } else {
-                    form.clk_x = e.pageX - this.offsetLeft;
-                    form.clk_y = e.pageY - this.offsetTop;
-                }
-            }
-            // clear form vars
-            setTimeout(function() { form.clk = form.clk_x = form.clk_y = null; }, 10);
-        });
-    });
+	// in jQuery 1.3+ we can fix mistakes with the ready state
+	if (this.length === 0) {
+		var o = { s: this.selector, c: this.context };
+		if (!$.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;
+	}
+	
+	return this.ajaxFormUnbind().bind('submit.form-plugin', function(e) {
+		if (!e.isDefaultPrevented()) { // if event has been canceled, don't proceed
+			e.preventDefault();
+			$(this).ajaxSubmit(options);
+		}
+	}).bind('click.form-plugin', function(e) {
+		var target = e.target;
+		var $el = $(target);
+		if (!($el.is(":submit,input:image"))) {
+			// is this a child element of the submit el?  (ex: a span within a button)
+			var t = $el.closest(':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') { // try to use dimensions plugin
+				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() {
-    this.unbind('submit.form-plugin');
-    return this.each(function() {
-        $(":submit,input:image", this).unbind('click.form-plugin');
-    });
-
+	return this.unbind('submit.form-plugin click.form-plugin');
 };
 
 /**
@@ -408,44 +550,55 @@ $.fn.ajaxFormUnbind = function() {
  * ajaxSubmit() and ajaxForm() methods.
  */
 $.fn.formToArray = function(semantic) {
-    var a = [];
-    if (this.length == 0) return a;
-
-    var form = this[0];
-    var els = semantic ? form.getElementsByTagName('*') : form.elements;
-    if (!els) return a;
-    for(var i=0, max=els.length; i < max; i++) {
-        var el = els[i];
-        var n = el.name;
-        if (!n) continue;
-
-        if (semantic && form.clk && el.type == "image") {
-            // handle image inputs on the fly when semantic == true
-            if(!el.disabled && form.clk == el) {
-            	a.push({name: n, value: $(el).val()});
-                a.push({name: n+'.x', value: form.clk_x}, {name: n+'.y', value: form.clk_y});
-            }
-            continue;
-        }
-
-        var v = $.fieldValue(el, true);
-        if (v && v.constructor == Array) {
-            for(var j=0, jmax=v.length; j < jmax; j++)
-                a.push({name: n, value: v[j]});
-        }
-        else if (v !== null && typeof v != 'undefined')
-            a.push({name: n, value: v});
-    }
-
-    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;
+	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) {
+			continue;
+		}
+
+		if (semantic && form.clk && el.type == "image") {
+			// handle image inputs on the fly when semantic == true
+			if(!el.disabled && form.clk == el) {
+				a.push({name: n, value: $(el).val()});
+				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) {
+			for(j=0, jmax=v.length; j < jmax; j++) {
+				a.push({name: n, value: v[j]});
+			}
+		}
+		else if (v !== null && typeof v != 'undefined') {
+			a.push({name: n, value: v});
+		}
+	}
+
+	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;
 };
 
 /**
@@ -453,8 +606,8 @@ $.fn.formToArray = function(semantic) {
  * 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));
+	//hand off to jQuery.param for proper encoding
+	return $.param(this.formToArray(semantic));
 };
 
 /**
@@ -462,32 +615,36 @@ $.fn.formSerialize = function(semantic) {
  * 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);
+	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" />
+ *	  <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 = $(':text').fieldValue();
@@ -514,51 +671,60 @@ $.fn.fieldSerialize = function(successful) {
  * 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.
+ *	   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;
-        v.constructor == Array ? $.merge(val, v) : val.push(v);
-    }
-    return val;
+	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;
+		}
+		v.constructor == Array ? $.merge(val, v) : 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;
-
-    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 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.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();
 };
 
 /**
@@ -570,46 +736,52 @@ $.fieldValue = function(el, successful) {
  *  - button elements will *not* be effected
  */
 $.fn.clearForm = function() {
-    return this.each(function() {
-        $('input,select,textarea', this).clearFields();
-    });
+	return this.each(function() {
+		$('input,select,textarea', this).clearFields();
+	});
 };
 
 /**
  * Clears the selected form elements.
  */
 $.fn.clearFields = $.fn.clearInputs = function() {
-    return this.each(function() {
-        var t = this.type, tag = this.tagName.toLowerCase();
-        if (t == 'text' || t == 'password' || tag == 'textarea')
-            this.value = '';
-        else if (t == 'checkbox' || t == 'radio')
-            this.checked = false;
-        else if (tag == 'select')
-            this.selectedIndex = -1;
-    });
+	return this.each(function() {
+		var t = this.type, tag = this.tagName.toLowerCase();
+		if (t == 'text' || t == 'password' || tag == 'textarea') {
+			this.value = '';
+		}
+		else if (t == 'checkbox' || t == 'radio') {
+			this.checked = false;
+		}
+		else if (tag == 'select') {
+			this.selectedIndex = -1;
+		}
+	});
 };
 
 /**
  * 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();
-    });
+	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();
+		}
+	});
 };
 
 /**
  * Enables or disables any matching elements.
  */
 $.fn.enable = function(b) {
-    if (b == undefined) b = true;
-    return this.each(function() {
-        this.disabled = !b;
-    });
+	if (b === undefined) {
+		b = true;
+	}
+	return this.each(function() {
+		this.disabled = !b;
+	});
 };
 
 /**
@@ -617,27 +789,37 @@ $.fn.enable = function(b) {
  * 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 (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;
+		}
+	});
 };
 
 // helper fn for console logging
 // set $.fn.ajaxSubmit.debug to true to enable debug logging
 function log() {
-    if ($.fn.ajaxSubmit.debug && window.console && window.console.log)
-        window.console.log('[jquery.form] ' + Array.prototype.join.call(arguments,''));
+	if ($.fn.ajaxSubmit.debug) {
+		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);
+		}
+	}
 };
 
 })(jQuery);