
/**
 * Cookie plugin 1.0
 *
 * Copyright (c) 2006 Klaus Hartl (stilbuero.de)
 * Dual licensed under the MIT and GPL licenses:
 * http://www.opensource.org/licenses/mit-license.php
 * http://www.gnu.org/licenses/gpl.html
 *
 */
jQuery.cookie=function(b,j,m){if(typeof j!="undefined"){m=m||{};if(j===null){j="";m.expires=-1}var e="";if(m.expires&&(typeof m.expires=="number"||m.expires.toUTCString)){var f;if(typeof m.expires=="number"){f=new Date();f.setTime(f.getTime()+(m.expires*24*60*60*1000))}else{f=m.expires}e="; expires="+f.toUTCString()}var l=m.path?"; path="+(m.path):"";var g=m.domain?"; domain="+(m.domain):"";var a=m.secure?"; secure":"";document.cookie=[b,"=",encodeURIComponent(j),e,l,g,a].join("")}else{var d=null;if(document.cookie&&document.cookie!=""){var k=document.cookie.split(";");for(var h=0;h<k.length;h++){var c=jQuery.trim(k[h]);if(c.substring(0,b.length+1)==(b+"=")){d=decodeURIComponent(c.substring(b.length+1));break}}}return d}};
;

/*!
 * jQuery Form Plugin
 * version: 2.52 (07-DEC-2010)
 * @requires jQuery v1.3.2 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
 */
;(function(b){function q(){if(b.fn.ajaxSubmit.debug){var a="[jquery.form] "+Array.prototype.join.call(arguments,"");if(window.console&&window.console.log)window.console.log(a);else window.opera&&window.opera.postError&&window.opera.postError(a)}}b.fn.ajaxSubmit=function(a){function f(){function t(){var o=i.attr("target"),m=i.attr("action");l.setAttribute("target",u);l.getAttribute("method")!="POST"&&l.setAttribute("method","POST");l.getAttribute("action")!=e.url&&l.setAttribute("action",e.url);e.skipEncodingOverride|| i.attr({encoding:"multipart/form-data",enctype:"multipart/form-data"});e.timeout&&setTimeout(function(){F=true;s()},e.timeout);var v=[];try{if(e.extraData)for(var w in e.extraData)v.push(b('<input type="hidden" name="'+w+'" value="'+e.extraData[w]+'" />').appendTo(l)[0]);r.appendTo("body");r.data("form-plugin-onload",s);l.submit()}finally{l.setAttribute("action",m);o?l.setAttribute("target",o):i.removeAttr("target");b(v).remove()}}function s(){if(!G){r.removeData("form-plugin-onload");var o=true; try{if(F)throw"timeout";p=x.contentWindow?x.contentWindow.document:x.contentDocument?x.contentDocument:x.document;var m=e.dataType=="xml"||p.XMLDocument||b.isXMLDoc(p);q("isXml="+m);if(!m&&window.opera&&(p.body==null||p.body.innerHTML==""))if(--K){q("requeing onLoad callback, DOM not available");setTimeout(s,250);return}G=true;j.responseText=p.documentElement?p.documentElement.innerHTML:null;j.responseXML=p.XMLDocument?p.XMLDocument:p;j.getResponseHeader=function(L){return{"content-type":e.dataType}[L]}; var v=/(json|script)/.test(e.dataType);if(v||e.textarea){var w=p.getElementsByTagName("textarea")[0];if(w)j.responseText=w.value;else if(v){var H=p.getElementsByTagName("pre")[0],I=p.getElementsByTagName("body")[0];if(H)j.responseText=H.textContent;else if(I)j.responseText=I.innerHTML}}else if(e.dataType=="xml"&&!j.responseXML&&j.responseText!=null)j.responseXML=C(j.responseText);J=b.httpData(j,e.dataType)}catch(D){q("error caught:",D);o=false;j.error=D;b.handleError(e,j,"error",D)}if(j.aborted){q("upload aborted"); o=false}if(o){e.success.call(e.context,J,"success",j);y&&b.event.trigger("ajaxSuccess",[j,e])}y&&b.event.trigger("ajaxComplete",[j,e]);y&&!--b.active&&b.event.trigger("ajaxStop");if(e.complete)e.complete.call(e.context,j,o?"success":"error");setTimeout(function(){r.removeData("form-plugin-onload");r.remove();j.responseXML=null},100)}}function C(o,m){if(window.ActiveXObject){m=new ActiveXObject("Microsoft.XMLDOM");m.async="false";m.loadXML(o)}else m=(new DOMParser).parseFromString(o,"text/xml");return m&& m.documentElement&&m.documentElement.tagName!="parsererror"?m:null}var l=i[0];if(b(":input[name=submit],:input[id=submit]",l).length)alert('Error: Form elements must not have name or id of "submit".');else{var e=b.extend(true,{},b.ajaxSettings,a);e.context=e.context||e;var u="jqFormIO"+(new Date).getTime(),E="_"+u;window[E]=function(){var o=r.data("form-plugin-onload");if(o){o();window[E]=undefined;try{delete window[E]}catch(m){}}};var r=b('<iframe id="'+u+'" name="'+u+'" src="'+e.iframeSrc+'" onload="window[\'_\'+this.id]()" />'), x=r[0];r.css({position:"absolute",top:"-1000px",left:"-1000px"});var j={aborted:0,responseText:null,responseXML:null,status:0,statusText:"n/a",getAllResponseHeaders:function(){},getResponseHeader:function(){},setRequestHeader:function(){},abort:function(){this.aborted=1;r.attr("src",e.iframeSrc)}},y=e.global;y&&!b.active++&&b.event.trigger("ajaxStart");y&&b.event.trigger("ajaxSend",[j,e]);if(e.beforeSend&&e.beforeSend.call(e.context,j,e)===false)e.global&&b.active--;else if(!j.aborted){var G=false, F=0,z=l.clk;if(z){var A=z.name;if(A&&!z.disabled){e.extraData=e.extraData||{};e.extraData[A]=z.value;if(z.type=="image"){e.extraData[A+".x"]=l.clk_x;e.extraData[A+".y"]=l.clk_y}}}e.forceSync?t():setTimeout(t,10);var J,p,K=50}}}if(!this.length){q("ajaxSubmit: skipping submit process - no element selected");return this}if(typeof a=="function")a={success:a};var d=this.attr("action");if(d=typeof d==="string"?b.trim(d):"")d=(d.match(/^([^#]+)/)||[])[1];d=d||window.location.href||"";a=b.extend(true,{url:d, type:this.attr("method")||"GET",iframeSrc:/^https/i.test(window.location.href||"")?"javascript:false":"about:blank"},a);d={};this.trigger("form-pre-serialize",[this,a,d]);if(d.veto){q("ajaxSubmit: submit vetoed via form-pre-serialize trigger");return this}if(a.beforeSerialize&&a.beforeSerialize(this,a)===false){q("ajaxSubmit: submit aborted via beforeSerialize callback");return this}var c,h,g=this.formToArray(a.semantic);if(a.data){a.extraData=a.data;for(c in a.data)if(a.data[c]instanceof Array)for(var k in a.data[c])g.push({name:c, value:a.data[c][k]});else{h=a.data[c];h=b.isFunction(h)?h():h;g.push({name:c,value:h})}}if(a.beforeSubmit&&a.beforeSubmit(g,this,a)===false){q("ajaxSubmit: submit aborted via beforeSubmit callback");return this}this.trigger("form-submit-validate",[g,this,a,d]);if(d.veto){q("ajaxSubmit: submit vetoed via form-submit-validate trigger");return this}c=b.param(g);if(a.type.toUpperCase()=="GET"){a.url+=(a.url.indexOf("?")>=0?"&":"?")+c;a.data=null}else a.data=c;var i=this,n=[];a.resetForm&&n.push(function(){i.resetForm()}); a.clearForm&&n.push(function(){i.clearForm()});if(!a.dataType&&a.target){var B=a.success||function(){};n.push(function(t){var s=a.replaceTarget?"replaceWith":"html";b(a.target)[s](t).each(B,arguments)})}else a.success&&n.push(a.success);a.success=function(t,s,C){for(var l=a.context||a,e=0,u=n.length;e<u;e++)n[e].apply(l,[t,s,C||i,i])};c=b("input:file",this).length>0;k=i.attr("enctype")=="multipart/form-data"||i.attr("encoding")=="multipart/form-data";if(a.iframe!==false&&(c||a.iframe||k))a.closeKeepAlive? b.get(a.closeKeepAlive,f):f();else b.ajax(a);this.trigger("form-submit-notify",[this,a]);return this};b.fn.ajaxForm=function(a){if(this.length===0){var f={s:this.selector,c:this.context};if(!b.isReady&&f.s){q("DOM not ready, queuing ajaxForm");b(function(){b(f.s,f.c).ajaxForm(a)});return this}q("terminating; zero elements found by selector"+(b.isReady?"":" (DOM not ready)"));return this}return this.ajaxFormUnbind().bind("submit.form-plugin",function(d){if(!d.isDefaultPrevented()){d.preventDefault(); b(this).ajaxSubmit(a)}}).bind("click.form-plugin",function(d){var c=d.target,h=b(c);if(!h.is(":submit,input:image")){c=h.closest(":submit");if(c.length==0)return;c=c[0]}var g=this;g.clk=c;if(c.type=="image")if(d.offsetX!=undefined){g.clk_x=d.offsetX;g.clk_y=d.offsetY}else if(typeof b.fn.offset=="function"){h=h.offset();g.clk_x=d.pageX-h.left;g.clk_y=d.pageY-h.top}else{g.clk_x=d.pageX-c.offsetLeft;g.clk_y=d.pageY-c.offsetTop}setTimeout(function(){g.clk=g.clk_x=g.clk_y=null},100)})};b.fn.ajaxFormUnbind= function(){return this.unbind("submit.form-plugin click.form-plugin")};b.fn.formToArray=function(a){var f=[];if(this.length===0)return f;var d=this[0],c=a?d.getElementsByTagName("*"):d.elements;if(!c)return f;var h,g,k,i,n,B;h=0;for(n=c.length;h<n;h++){g=c[h];if(k=g.name)if(a&&d.clk&&g.type=="image"){if(!g.disabled&&d.clk==g){f.push({name:k,value:b(g).val()});f.push({name:k+".x",value:d.clk_x},{name:k+".y",value:d.clk_y})}}else if((i=b.fieldValue(g,true))&&i.constructor==Array){g=0;for(B=i.length;g< B;g++)f.push({name:k,value:i[g]})}else i!==null&&typeof i!="undefined"&&f.push({name:k,value:i})}if(!a&&d.clk){a=b(d.clk);c=a[0];if((k=c.name)&&!c.disabled&&c.type=="image"){f.push({name:k,value:a.val()});f.push({name:k+".x",value:d.clk_x},{name:k+".y",value:d.clk_y})}}return f};b.fn.formSerialize=function(a){return b.param(this.formToArray(a))};b.fn.fieldSerialize=function(a){var f=[];this.each(function(){var d=this.name;if(d){var c=b.fieldValue(this,a);if(c&&c.constructor==Array)for(var h=0,g=c.length;h< g;h++)f.push({name:d,value:c[h]});else c!==null&&typeof c!="undefined"&&f.push({name:this.name,value:c})}});return b.param(f)};b.fn.fieldValue=function(a){for(var f=[],d=0,c=this.length;d<c;d++){var h=b.fieldValue(this[d],a);h===null||typeof h=="undefined"||h.constructor==Array&&!h.length||(h.constructor==Array?b.merge(f,h):f.push(h))}return f};b.fieldValue=function(a,f){var d=a.name,c=a.type,h=a.tagName.toLowerCase();if(f===undefined)f=true;if(f&&(!d||a.disabled||c=="reset"||c=="button"||(c=="checkbox"|| c=="radio")&&!a.checked||(c=="submit"||c=="image")&&a.form&&a.form.clk!=a||h=="select"&&a.selectedIndex==-1))return null;if(h=="select"){var g=a.selectedIndex;if(g<0)return null;d=[];h=a.options;var k=(c=c=="select-one")?g+1:h.length;for(g=c?g:0;g<k;g++){var i=h[g];if(i.selected){var n=i.value;n||(n=i.attributes&&i.attributes.value&&!i.attributes.value.specified?i.text:i.value);if(c)return n;d.push(n)}}return d}return b(a).val()};b.fn.clearForm=function(){return this.each(function(){b("input,select,textarea", this).clearFields()})};b.fn.clearFields=b.fn.clearInputs=function(){return this.each(function(){var a=this.type,f=this.tagName.toLowerCase();if(a=="text"||a=="password"||f=="textarea")this.value="";else if(a=="checkbox"||a=="radio")this.checked=false;else if(f=="select")this.selectedIndex=-1})};b.fn.resetForm=function(){return this.each(function(){if(typeof this.reset=="function"||typeof this.reset=="object"&&!this.reset.nodeType)this.reset()})};b.fn.enable=function(a){if(a===undefined)a=true;return this.each(function(){this.disabled= !a})};b.fn.selected=function(a){if(a===undefined)a=true;return this.each(function(){var f=this.type;if(f=="checkbox"||f=="radio")this.checked=a;else if(this.tagName.toLowerCase()=="option"){f=b(this).parent("select");a&&f[0]&&f[0].type=="select-one"&&f.find("option").selected(false);this.selected=a}})}})(jQuery);;
(function ($) {

/**
 * Retrieves the summary for the first element.
 */
$.fn.drupalGetSummary = function () {
  var callback = this.data('summaryCallback');
  return (this[0] && callback) ? $.trim(callback(this[0])) : '';
};

/**
 * Sets the summary for all matched elements.
 *
 * @param callback
 *   Either a function that will be called each time the summary is
 *   retrieved or a string (which is returned each time).
 */
$.fn.drupalSetSummary = function (callback) {
  var self = this;

  // To facilitate things, the callback should always be a function. If it's
  // not, we wrap it into an anonymous function which just returns the value.
  if (typeof callback != 'function') {
    var val = callback;
    callback = function () { return val; };
  }

  return this
    .data('summaryCallback', callback)
    // To prevent duplicate events, the handlers are first removed and then
    // (re-)added.
    .unbind('formUpdated.summary')
    .bind('formUpdated.summary', function () {
      self.trigger('summaryUpdated');
    })
    // The actual summaryUpdated handler doesn't fire when the callback is
    // changed, so we have to do this manually.
    .trigger('summaryUpdated');
};

/**
 * Sends a 'formUpdated' event each time a form element is modified.
 */
Drupal.behaviors.formUpdated = {
  attach: function (context) {
    // These events are namespaced so that we can remove them later.
    var events = 'change.formUpdated click.formUpdated blur.formUpdated keyup.formUpdated';
    $(context)
      // Since context could be an input element itself, it's added back to
      // the jQuery object and filtered again.
      .find(':input').andSelf().filter(':input')
      // To prevent duplicate events, the handlers are first removed and then
      // (re-)added.
      .unbind(events).bind(events, function () {
        $(this).trigger('formUpdated');
      });
  }
};

/**
 * Prepopulate form fields with information from the visitor cookie.
 */
Drupal.behaviors.fillUserInfoFromCookie = {
  attach: function (context, settings) {
    $('form.user-info-from-cookie').once('user-info-from-cookie', function () {
      var formContext = this;
      $.each(['name', 'mail', 'homepage'], function () {
        var $element = $('[name=' + this + ']', formContext);
        var cookie = $.cookie('Drupal.visitor.' + this);
        if ($element.length && cookie) {
          $element.val(cookie);
        }
      });
    });
  }
};

})(jQuery);
;
(function ($) {

/**
 * Provides Ajax page updating via jQuery $.ajax (Asynchronous JavaScript and XML).
 *
 * Ajax is a method of making a request via JavaScript while viewing an HTML
 * page. The request returns an array of commands encoded in JSON, which is
 * then executed to make any changes that are necessary to the page.
 *
 * Drupal uses this file to enhance form elements with #ajax['path'] and
 * #ajax['wrapper'] properties. If set, this file will automatically be included
 * to provide Ajax capabilities.
 */

Drupal.ajax = Drupal.ajax || {};

Drupal.settings.urlIsAjaxTrusted = Drupal.settings.urlIsAjaxTrusted || {};

/**
 * Attaches the Ajax behavior to each Ajax form element.
 */
Drupal.behaviors.AJAX = {
  attach: function (context, settings) {
    // Load all Ajax behaviors specified in the settings.
    for (var base in settings.ajax) {
      if (!$('#' + base + '.ajax-processed').length) {
        var element_settings = settings.ajax[base];

        if (typeof element_settings.selector == 'undefined') {
          element_settings.selector = '#' + base;
        }
        $(element_settings.selector).each(function () {
          element_settings.element = this;
          Drupal.ajax[base] = new Drupal.ajax(base, this, element_settings);
        });

        $('#' + base).addClass('ajax-processed');
      }
    }

    // Bind Ajax behaviors to all items showing the class.
    $('.use-ajax:not(.ajax-processed)').addClass('ajax-processed').each(function () {
      var element_settings = {};
      // Clicked links look better with the throbber than the progress bar.
      element_settings.progress = { 'type': 'throbber' };

      // For anchor tags, these will go to the target of the anchor rather
      // than the usual location.
      if ($(this).attr('href')) {
        element_settings.url = $(this).attr('href');
        element_settings.event = 'click';
      }
      var base = $(this).attr('id');
      Drupal.ajax[base] = new Drupal.ajax(base, this, element_settings);
    });

    // This class means to submit the form to the action using Ajax.
    $('.use-ajax-submit:not(.ajax-processed)').addClass('ajax-processed').each(function () {
      var element_settings = {};

      // Ajax submits specified in this manner automatically submit to the
      // normal form action.
      element_settings.url = $(this.form).attr('action');
      // Form submit button clicks need to tell the form what was clicked so
      // it gets passed in the POST request.
      element_settings.setClick = true;
      // Form buttons use the 'click' event rather than mousedown.
      element_settings.event = 'click';
      // Clicked form buttons look better with the throbber than the progress bar.
      element_settings.progress = { 'type': 'throbber' };

      var base = $(this).attr('id');
      Drupal.ajax[base] = new Drupal.ajax(base, this, element_settings);
    });
  }
};

/**
 * Ajax object.
 *
 * All Ajax objects on a page are accessible through the global Drupal.ajax
 * object and are keyed by the submit button's ID. You can access them from
 * your module's JavaScript file to override properties or functions.
 *
 * For example, if your Ajax enabled button has the ID 'edit-submit', you can
 * redefine the function that is called to insert the new content like this
 * (inside a Drupal.behaviors attach block):
 * @code
 *    Drupal.behaviors.myCustomAJAXStuff = {
 *      attach: function (context, settings) {
 *        Drupal.ajax['edit-submit'].commands.insert = function (ajax, response, status) {
 *          new_content = $(response.data);
 *          $('#my-wrapper').append(new_content);
 *          alert('New content was appended to #my-wrapper');
 *        }
 *      }
 *    };
 * @endcode
 */
Drupal.ajax = function (base, element, element_settings) {
  var defaults = {
    url: 'system/ajax',
    event: 'mousedown',
    keypress: true,
    selector: '#' + base,
    effect: 'none',
    speed: 'none',
    method: 'replaceWith',
    progress: {
      type: 'throbber',
      message: Drupal.t('Please wait...')
    },
    submit: {
      'js': true
    }
  };

  $.extend(this, defaults, element_settings);

  this.element = element;
  this.element_settings = element_settings;

  // Replacing 'nojs' with 'ajax' in the URL allows for an easy method to let
  // the server detect when it needs to degrade gracefully.
  // There are five scenarios to check for:
  // 1. /nojs/
  // 2. /nojs$ - The end of a URL string.
  // 3. /nojs? - Followed by a query (with clean URLs enabled).
  //      E.g.: path/nojs?destination=foobar
  // 4. /nojs& - Followed by a query (without clean URLs enabled).
  //      E.g.: ?q=path/nojs&destination=foobar
  // 5. /nojs# - Followed by a fragment.
  //      E.g.: path/nojs#myfragment
  this.url = element_settings.url.replace(/\/nojs(\/|$|\?|&|#)/g, '/ajax$1');
  // If the 'nojs' version of the URL is trusted, also trust the 'ajax' version.
  if (Drupal.settings.urlIsAjaxTrusted[element_settings.url]) {
    Drupal.settings.urlIsAjaxTrusted[this.url] = true;
  }

  this.wrapper = '#' + element_settings.wrapper;

  // If there isn't a form, jQuery.ajax() will be used instead, allowing us to
  // bind Ajax to links as well.
  if (this.element.form) {
    this.form = $(this.element.form);
  }

  // Set the options for the ajaxSubmit function.
  // The 'this' variable will not persist inside of the options object.
  var ajax = this;
  ajax.options = {
    url: Drupal.sanitizeAjaxUrl(ajax.url),
    data: ajax.submit,
    beforeSerialize: function (element_settings, options) {
      return ajax.beforeSerialize(element_settings, options);
    },
    beforeSubmit: function (form_values, element_settings, options) {
      ajax.ajaxing = true;
      return ajax.beforeSubmit(form_values, element_settings, options);
    },
    beforeSend: function (xmlhttprequest, options) {
      ajax.ajaxing = true;
      return ajax.beforeSend(xmlhttprequest, options);
    },
    success: function (response, status, xmlhttprequest) {
      // Sanity check for browser support (object expected).
      // When using iFrame uploads, responses must be returned as a string.
      if (typeof response == 'string') {
        response = $.parseJSON(response);
      }

      // Prior to invoking the response's commands, verify that they can be
      // trusted by checking for a response header. See
      // ajax_set_verification_header() for details.
      // - Empty responses are harmless so can bypass verification. This avoids
      //   an alert message for server-generated no-op responses that skip Ajax
      //   rendering.
      // - Ajax objects with trusted URLs (e.g., ones defined server-side via
      //   #ajax) can bypass header verification. This is especially useful for
      //   Ajax with multipart forms. Because IFRAME transport is used, the
      //   response headers cannot be accessed for verification.
      if (response !== null && !Drupal.settings.urlIsAjaxTrusted[ajax.url]) {
        if (xmlhttprequest.getResponseHeader('X-Drupal-Ajax-Token') !== '1') {
          var customMessage = Drupal.t("The response failed verification so will not be processed.");
          return ajax.error(xmlhttprequest, ajax.url, customMessage);
        }
      }

      return ajax.success(response, status);
    },
    complete: function (xmlhttprequest, status) {
      ajax.ajaxing = false;
      if (status == 'error' || status == 'parsererror') {
        return ajax.error(xmlhttprequest, ajax.url);
      }
    },
    dataType: 'json',
    jsonp: false,
    type: 'POST'
  };

  // For multipart forms (e.g., file uploads), jQuery Form targets the form
  // submission to an iframe instead of using an XHR object. The initial "src"
  // of the iframe, prior to the form submission, is set to options.iframeSrc.
  // "about:blank" is the semantically correct, standards-compliant, way to
  // initialize a blank iframe; however, some old IE versions (possibly only 6)
  // incorrectly report a mixed content warning when iframes with an
  // "about:blank" src are added to a parent document with an https:// origin.
  // jQuery Form works around this by defaulting to "javascript:false" instead,
  // but that breaks on Chrome 83, so here we force the semantically correct
  // behavior for all browsers except old IE.
  // @see https://www.drupal.org/project/drupal/issues/3143016
  // @see https://github.com/jquery-form/form/blob/df9cb101b9c9c085c8d75ad980c7ff1cf62063a1/jquery.form.js#L68
  // @see https://bugs.chromium.org/p/chromium/issues/detail?id=1084874
  // @see https://html.spec.whatwg.org/multipage/browsers.html#creating-browsing-contexts
  // @see https://developer.mozilla.org/en-US/docs/Web/Security/Same-origin_policy
  if (navigator.userAgent.indexOf("MSIE") === -1) {
    ajax.options.iframeSrc = 'about:blank';
  }

  // Bind the ajaxSubmit function to the element event.
  $(ajax.element).bind(element_settings.event, function (event) {
    if (!Drupal.settings.urlIsAjaxTrusted[ajax.url] && !Drupal.urlIsLocal(ajax.url)) {
      throw new Error(Drupal.t('The callback URL is not local and not trusted: !url', {'!url': ajax.url}));
    }
    return ajax.eventResponse(this, event);
  });

  // If necessary, enable keyboard submission so that Ajax behaviors
  // can be triggered through keyboard input as well as e.g. a mousedown
  // action.
  if (element_settings.keypress) {
    $(ajax.element).keypress(function (event) {
      return ajax.keypressResponse(this, event);
    });
  }

  // If necessary, prevent the browser default action of an additional event.
  // For example, prevent the browser default action of a click, even if the
  // AJAX behavior binds to mousedown.
  if (element_settings.prevent) {
    $(ajax.element).bind(element_settings.prevent, false);
  }
};

/**
 * Handle a key press.
 *
 * The Ajax object will, if instructed, bind to a key press response. This
 * will test to see if the key press is valid to trigger this event and
 * if it is, trigger it for us and prevent other keypresses from triggering.
 * In this case we're handling RETURN and SPACEBAR keypresses (event codes 13
 * and 32. RETURN is often used to submit a form when in a textfield, and 
 * SPACE is often used to activate an element without submitting. 
 */
Drupal.ajax.prototype.keypressResponse = function (element, event) {
  // Create a synonym for this to reduce code confusion.
  var ajax = this;

  // Detect enter key and space bar and allow the standard response for them,
  // except for form elements of type 'text' and 'textarea', where the 
  // spacebar activation causes inappropriate activation if #ajax['keypress'] is 
  // TRUE. On a text-type widget a space should always be a space.
  if (event.which == 13 || (event.which == 32 && element.type != 'text' && element.type != 'textarea')) {
    $(ajax.element_settings.element).trigger(ajax.element_settings.event);
    return false;
  }
};

/**
 * Handle an event that triggers an Ajax response.
 *
 * When an event that triggers an Ajax response happens, this method will
 * perform the actual Ajax call. It is bound to the event using
 * bind() in the constructor, and it uses the options specified on the
 * ajax object.
 */
Drupal.ajax.prototype.eventResponse = function (element, event) {
  // Create a synonym for this to reduce code confusion.
  var ajax = this;

  // Do not perform another ajax command if one is already in progress.
  if (ajax.ajaxing) {
    return false;
  }

  try {
    if (ajax.form) {
      // If setClick is set, we must set this to ensure that the button's
      // value is passed.
      if (ajax.setClick) {
        // Mark the clicked button. 'form.clk' is a special variable for
        // ajaxSubmit that tells the system which element got clicked to
        // trigger the submit. Without it there would be no 'op' or
        // equivalent.
        element.form.clk = element;
      }

      ajax.form.ajaxSubmit(ajax.options);
    }
    else {
      ajax.beforeSerialize(ajax.element, ajax.options);
      $.ajax(ajax.options);
    }
  }
  catch (e) {
    // Unset the ajax.ajaxing flag here because it won't be unset during
    // the complete response.
    ajax.ajaxing = false;
    alert("An error occurred while attempting to process " + ajax.options.url + ": " + e.message);
  }

  // For radio/checkbox, allow the default event. On IE, this means letting
  // it actually check the box.
  if (typeof element.type != 'undefined' && (element.type == 'checkbox' || element.type == 'radio')) {
    return true;
  }
  else {
    return false;
  }

};

/**
 * Handler for the form serialization.
 *
 * Runs before the beforeSend() handler (see below), and unlike that one, runs
 * before field data is collected.
 */
Drupal.ajax.prototype.beforeSerialize = function (element, options) {
  // Allow detaching behaviors to update field values before collecting them.
  // This is only needed when field values are added to the POST data, so only
  // when there is a form such that this.form.ajaxSubmit() is used instead of
  // $.ajax(). When there is no form and $.ajax() is used, beforeSerialize()
  // isn't called, but don't rely on that: explicitly check this.form.
  if (this.form) {
    var settings = this.settings || Drupal.settings;
    Drupal.detachBehaviors(this.form, settings, 'serialize');
  }

  // Prevent duplicate HTML ids in the returned markup.
  // @see drupal_html_id()
  options.data['ajax_html_ids[]'] = [];
  $('[id]').each(function () {
    options.data['ajax_html_ids[]'].push(this.id);
  });

  // Allow Drupal to return new JavaScript and CSS files to load without
  // returning the ones already loaded.
  // @see ajax_base_page_theme()
  // @see drupal_get_css()
  // @see drupal_get_js()
  options.data['ajax_page_state[theme]'] = Drupal.settings.ajaxPageState.theme;
  options.data['ajax_page_state[theme_token]'] = Drupal.settings.ajaxPageState.theme_token;
  for (var key in Drupal.settings.ajaxPageState.css) {
    options.data['ajax_page_state[css][' + key + ']'] = 1;
  }
  for (var key in Drupal.settings.ajaxPageState.js) {
    options.data['ajax_page_state[js][' + key + ']'] = 1;
  }
};

/**
 * Modify form values prior to form submission.
 */
Drupal.ajax.prototype.beforeSubmit = function (form_values, element, options) {
  // This function is left empty to make it simple to override for modules
  // that wish to add functionality here.
};

/**
 * Prepare the Ajax request before it is sent.
 */
Drupal.ajax.prototype.beforeSend = function (xmlhttprequest, options) {
  // For forms without file inputs, the jQuery Form plugin serializes the form
  // values, and then calls jQuery's $.ajax() function, which invokes this
  // handler. In this circumstance, options.extraData is never used. For forms
  // with file inputs, the jQuery Form plugin uses the browser's normal form
  // submission mechanism, but captures the response in a hidden IFRAME. In this
  // circumstance, it calls this handler first, and then appends hidden fields
  // to the form to submit the values in options.extraData. There is no simple
  // way to know which submission mechanism will be used, so we add to extraData
  // regardless, and allow it to be ignored in the former case.
  if (this.form) {
    options.extraData = options.extraData || {};

    // Let the server know when the IFRAME submission mechanism is used. The
    // server can use this information to wrap the JSON response in a TEXTAREA,
    // as per http://jquery.malsup.com/form/#file-upload.
    options.extraData.ajax_iframe_upload = '1';

    // The triggering element is about to be disabled (see below), but if it
    // contains a value (e.g., a checkbox, textfield, select, etc.), ensure that
    // value is included in the submission. As per above, submissions that use
    // $.ajax() are already serialized prior to the element being disabled, so
    // this is only needed for IFRAME submissions.
    var v = $.fieldValue(this.element);
    if (v !== null) {
      options.extraData[this.element.name] = Drupal.checkPlain(v);
    }
  }

  // Disable the element that received the change to prevent user interface
  // interaction while the Ajax request is in progress. ajax.ajaxing prevents
  // the element from triggering a new request, but does not prevent the user
  // from changing its value.
  $(this.element).addClass('progress-disabled').attr('disabled', true);

  // Insert progressbar or throbber.
  if (this.progress.type == 'bar') {
    var progressBar = new Drupal.progressBar('ajax-progress-' + this.element.id, $.noop, this.progress.method, $.noop);
    if (this.progress.message) {
      progressBar.setProgress(-1, this.progress.message);
    }
    if (this.progress.url) {
      progressBar.startMonitoring(this.progress.url, this.progress.interval || 1500);
    }
    this.progress.element = $(progressBar.element).addClass('ajax-progress ajax-progress-bar');
    this.progress.object = progressBar;
    $(this.element).after(this.progress.element);
  }
  else if (this.progress.type == 'throbber') {
    this.progress.element = $('<div class="ajax-progress ajax-progress-throbber"><div class="throbber">&nbsp;</div></div>');
    if (this.progress.message) {
      $('.throbber', this.progress.element).after('<div class="message">' + this.progress.message + '</div>');
    }
    $(this.element).after(this.progress.element);
  }
};

/**
 * Handler for the form redirection completion.
 */
Drupal.ajax.prototype.success = function (response, status) {
  // Remove the progress element.
  if (this.progress.element) {
    $(this.progress.element).remove();
  }
  if (this.progress.object) {
    this.progress.object.stopMonitoring();
  }
  $(this.element).removeClass('progress-disabled').removeAttr('disabled');

  Drupal.freezeHeight();

  for (var i in response) {
    if (response.hasOwnProperty(i) && response[i]['command'] && this.commands[response[i]['command']]) {
      this.commands[response[i]['command']](this, response[i], status);
    }
  }

  // Reattach behaviors, if they were detached in beforeSerialize(). The
  // attachBehaviors() called on the new content from processing the response
  // commands is not sufficient, because behaviors from the entire form need
  // to be reattached.
  if (this.form) {
    var settings = this.settings || Drupal.settings;
    Drupal.attachBehaviors(this.form, settings);
  }

  Drupal.unfreezeHeight();

  // Remove any response-specific settings so they don't get used on the next
  // call by mistake.
  this.settings = null;
};

/**
 * Build an effect object which tells us how to apply the effect when adding new HTML.
 */
Drupal.ajax.prototype.getEffect = function (response) {
  var type = response.effect || this.effect;
  var speed = response.speed || this.speed;

  var effect = {};
  if (type == 'none') {
    effect.showEffect = 'show';
    effect.hideEffect = 'hide';
    effect.showSpeed = '';
  }
  else if (type == 'fade') {
    effect.showEffect = 'fadeIn';
    effect.hideEffect = 'fadeOut';
    effect.showSpeed = speed;
  }
  else {
    effect.showEffect = type + 'Toggle';
    effect.hideEffect = type + 'Toggle';
    effect.showSpeed = speed;
  }

  return effect;
};

/**
 * Handler for the form redirection error.
 */
Drupal.ajax.prototype.error = function (xmlhttprequest, uri, customMessage) {
  Drupal.displayAjaxError(Drupal.ajaxError(xmlhttprequest, uri, customMessage));
  // Remove the progress element.
  if (this.progress.element) {
    $(this.progress.element).remove();
  }
  if (this.progress.object) {
    this.progress.object.stopMonitoring();
  }
  // Undo hide.
  $(this.wrapper).show();
  // Re-enable the element.
  $(this.element).removeClass('progress-disabled').removeAttr('disabled');
  // Reattach behaviors, if they were detached in beforeSerialize().
  if (this.form) {
    var settings = this.settings || Drupal.settings;
    Drupal.attachBehaviors(this.form, settings);
  }
};

/**
 * Provide a series of commands that the server can request the client perform.
 */
Drupal.ajax.prototype.commands = {
  /**
   * Command to insert new content into the DOM.
   */
  insert: function (ajax, response, status) {
    // Get information from the response. If it is not there, default to
    // our presets.
    var wrapper = response.selector ? $(response.selector) : $(ajax.wrapper);
    var method = response.method || ajax.method;
    var effect = ajax.getEffect(response);

    // We don't know what response.data contains: it might be a string of text
    // without HTML, so don't rely on jQuery correctly iterpreting
    // $(response.data) as new HTML rather than a CSS selector. Also, if
    // response.data contains top-level text nodes, they get lost with either
    // $(response.data) or $('<div></div>').replaceWith(response.data).
    var new_content_wrapped = $('<div></div>').html(response.data);
    var new_content = new_content_wrapped.contents();

    // For legacy reasons, the effects processing code assumes that new_content
    // consists of a single top-level element. Also, it has not been
    // sufficiently tested whether attachBehaviors() can be successfully called
    // with a context object that includes top-level text nodes. However, to
    // give developers full control of the HTML appearing in the page, and to
    // enable Ajax content to be inserted in places where DIV elements are not
    // allowed (e.g., within TABLE, TR, and SPAN parents), we check if the new
    // content satisfies the requirement of a single top-level element, and
    // only use the container DIV created above when it doesn't. For more
    // information, please see http://drupal.org/node/736066.
    if (new_content.length != 1 || new_content.get(0).nodeType != 1) {
      new_content = new_content_wrapped;
    }

    // If removing content from the wrapper, detach behaviors first.
    switch (method) {
      case 'html':
      case 'replaceWith':
      case 'replaceAll':
      case 'empty':
      case 'remove':
        var settings = response.settings || ajax.settings || Drupal.settings;
        Drupal.detachBehaviors(wrapper, settings);
    }

    // Add the new content to the page.
    wrapper[method](new_content);

    // Immediately hide the new content if we're using any effects.
    if (effect.showEffect != 'show') {
      new_content.hide();
    }

    // Determine which effect to use and what content will receive the
    // effect, then show the new content.
    if ($('.ajax-new-content', new_content).length > 0) {
      $('.ajax-new-content', new_content).hide();
      new_content.show();
      $('.ajax-new-content', new_content)[effect.showEffect](effect.showSpeed);
    }
    else if (effect.showEffect != 'show') {
      new_content[effect.showEffect](effect.showSpeed);
    }

    // Attach all JavaScript behaviors to the new content, if it was successfully
    // added to the page, this if statement allows #ajax['wrapper'] to be
    // optional.
    if (new_content.parents('html').length > 0) {
      // Apply any settings from the returned JSON if available.
      var settings = response.settings || ajax.settings || Drupal.settings;
      Drupal.attachBehaviors(new_content, settings);
    }
  },

  /**
   * Command to remove a chunk from the page.
   */
  remove: function (ajax, response, status) {
    var settings = response.settings || ajax.settings || Drupal.settings;
    Drupal.detachBehaviors($(response.selector), settings);
    $(response.selector).remove();
  },

  /**
   * Command to mark a chunk changed.
   */
  changed: function (ajax, response, status) {
    if (!$(response.selector).hasClass('ajax-changed')) {
      $(response.selector).addClass('ajax-changed');
      if (response.asterisk) {
        $(response.selector).find(response.asterisk).append(' <span class="ajax-changed">*</span> ');
      }
    }
  },

  /**
   * Command to provide an alert.
   */
  alert: function (ajax, response, status) {
    alert(response.text, response.title);
  },

  /**
   * Command to provide the jQuery css() function.
   */
  css: function (ajax, response, status) {
    $(response.selector).css(response.argument);
  },

  /**
   * Command to set the settings that will be used for other commands in this response.
   */
  settings: function (ajax, response, status) {
    if (response.merge) {
      $.extend(true, Drupal.settings, response.settings);
    }
    else {
      ajax.settings = response.settings;
    }
  },

  /**
   * Command to attach data using jQuery's data API.
   */
  data: function (ajax, response, status) {
    $(response.selector).data(response.name, response.value);
  },

  /**
   * Command to apply a jQuery method.
   */
  invoke: function (ajax, response, status) {
    var $element = $(response.selector);
    $element[response.method].apply($element, response.arguments);
  },

  /**
   * Command to restripe a table.
   */
  restripe: function (ajax, response, status) {
    // :even and :odd are reversed because jQuery counts from 0 and
    // we count from 1, so we're out of sync.
    // Match immediate children of the parent element to allow nesting.
    $('> tbody > tr:visible, > tr:visible', $(response.selector))
      .removeClass('odd even')
      .filter(':even').addClass('odd').end()
      .filter(':odd').addClass('even');
  },

  /**
   * Command to add css.
   *
   * Uses the proprietary addImport method if available as browsers which
   * support that method ignore @import statements in dynamically added
   * stylesheets.
   */
  add_css: function (ajax, response, status) {
    // Add the styles in the normal way.
    $('head').prepend(response.data);
    // Add imports in the styles using the addImport method if available.
    var match, importMatch = /^@import url\("(.*)"\);$/igm;
    if (document.styleSheets[0].addImport && importMatch.test(response.data)) {
      importMatch.lastIndex = 0;
      while (match = importMatch.exec(response.data)) {
        document.styleSheets[0].addImport(match[1]);
      }
    }
  },

  /**
   * Command to update a form's build ID.
   */
  updateBuildId: function(ajax, response, status) {
    $('input[name="form_build_id"][value="' + response['old'] + '"]').val(response['new']);
  }
};

})(jQuery);
;
