/*!
 * jQuery WallForm Plugin
 * version: 2.84 (22-AUG-2011)
 * @requires jQuery v1.3.3 or later
 *
 * Examples and documentation at: http://malsup.com/jquery/form/
 * Dual licensed under the MIT and GPL licenses:
 *   http://www.opensource.org/licenses/mit-license.php
 *   http://www.gnu.org/licenses/gpl.html
 * Modified by Arun Sekar http://9lessons.info 
 */
;(function($) {



/**
 * ajaxSubmit() provides a mechanism for immediately submitting
 * 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;
	}
	
	var method, action, url, $form = this;

	if (typeof options == 'function') {
		options = { success: options };
	}

	method = this.attr('method');
	action = this.attr('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 n,v,a = this.formToArray(options.semantic);
	if (options.data) {
		options.extraData = options.data;
		for (n in options.data) {
			if( $.isArray(options.data[n]) ) {
				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 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) {
		   $.get(options.closeKeepAlive, function() { fileUpload(a); });
		}
	   else {
		   fileUpload(a);
		}
   }
   else {
		// IE7 massage (see issue 57)
		if ($.browser.msie && method == 'get') { 
			var ieMeth = $form[0].getAttribute('method');
			if (typeof ieMeth === 'string')
				options.type = ieMeth;
		}
		$.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(a) {
		var form = $form[0], el, i, s, g, id, $io, io, xhr, sub, n, timedOut, timeoutHandle;
        var useProp = !!$.fn.prop;

        if (a) {
        	// ensure that every serialized input is still enabled
          	for (i=0; i < a.length; i++) {
                el = $(form[a[i].name]);
                el[ useProp ? 'prop' : 'attr' ]('disabled', false);
          	}
        }

		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;
		}
		
		s = $.extend(true, {}, $.ajaxSettings, options);
		s.context = s.context || s;
		id = 'jqFormIO' + (new Date().getTime());
		if (s.iframeTarget) {
			$io = $(s.iframeTarget);
			n = $io.attr('name');
			if (n == null)
			 	$io.attr('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;
				$io.attr('src', s.iframeSrc); // abort op in progress
				xhr.error = e;
				s.error && s.error.call(s.context, xhr, e, status);
				g && $.event.trigger("ajaxError", [xhr, s, e]);
				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++) {
			$.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;
		}

		// 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) {
			var doc = frame.contentWindow ? frame.contentWindow.document : frame.contentDocument ? frame.contentDocument : frame.document;
			return doc;
		}
		
		// 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 (!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.toLowerCase() == 'uninitialized')
						setTimeout(checkState,50);
				}
				catch(e) {
					log('Server abort: ' , e, ' (', e.name, ')');
					cb(SERVER_ABORT);
					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) {
						extraInputs.push(
							$('<input type="hidden" name="'+n+'" />').attr('value',s.extraData[n])
								.appendTo(form)[0]);
					}
				}

				if (!s.iframeTarget) {
					// add iframe to doc and submit the form
					$io.appendTo('body');
	                io.attachEvent ? io.attachEvent('onload', cb) : io.addEventListener('load', cb, false);
				}
				setTimeout(checkState,15);
				form.submit();
			}
			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;
			}
			try {
				doc = getDoc(io);
			}
			catch(ex) {
				log('cannot access response document: ', ex);
				e = SERVER_ABORT;
			}
			if (e === CLIENT_TIMEOUT_ABORT && xhr) {
				xhr.abort('timeout');
				return;
			}
			else if (e == SERVER_ABORT && xhr) {
				xhr.abort('server abort');
				return;
			}

			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 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 || '';
				var scr = /(json|script|text)/.test(dt.toLowerCase());
				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.innerHTML;
						}
						else if (b) {
							xhr.responseText = b.innerHTML;
						}
					}
				}
				else if (s.dataType == 'xml' && !xhr.responseXML && xhr.responseText != null) {
					xhr.responseXML = toXml(xhr.responseText);
				}

                try {
                    data = httpData(xhr, s.dataType, s);
                }
                catch (e) {
                    status = 'parsererror';
                    xhr.error = errMsg = (e || status);
                }
			}
			catch (e) {
				log('error caught: ',e);
				status = 'error';
                xhr.error = errMsg = (e || 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') {
				s.success && s.success.call(s.context, data, 'success', xhr);
				g && $.event.trigger("ajaxSuccess", [xhr, s]);
			}
            else if (status) {
				if (errMsg == undefined)
					errMsg = xhr.statusText;
				s.error && s.error.call(s.context, xhr, status, errMsg);
				g && $.event.trigger("ajaxError", [xhr, s, errMsg]);
            }

			g && $.event.trigger("ajaxComplete", [xhr, s]);

			if (g && ! --$.active) {
				$.event.trigger("ajaxStop");
			}

			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) {
			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;
			// Modification www.9lessons.info
			var exp = /<img[^>]+>/i;
            expResult = data.match(exp);
           if(expResult == null)
           {
            alert(data);
           }
           else{
				$(options.target).prepend(data);
			}
		   $("#photoimg").val('');
		   // Modification End www.9lessons.info


		};
	}
};

/**
 * 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.
 */
$.fn.ajaxForm = function(options) {
	// in jQuery 1.3+ we can fix mistakes with the ready state
	if (this.length === 0) {
		var o = { s: this.selector, c: this.context };
		if (!$.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() {
	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) {
	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;
};

/**
 * 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 = $(':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 = $(':checkbox').fieldValue();
 *  // if neither checkbox is checked
 *  v === undefined
 *  // if both checkboxes are checked
 *  v == ['B1', 'B2']
 *
 *  var v = $(':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;
		}
		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 (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() {
	return this.each(function() {
		$('input,select,textarea', this).clearFields();
	});
};

/**
 * Clears the selected form elements.
 */
$.fn.clearFields = $.fn.clearInputs = function() {
	var re = /^(?:color|date|datetime|email|month|number|password|range|search|tel|text|time|url|week)$/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;
		}
	});
};

/**
 * 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();
		}
	});
};

/**
 * Enables or disables any matching elements.
 */
$.fn.enable = function(b) {
	if (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 (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
function log() {
	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);
