diff --git a/plugins/pjax/lib/pjax_plugin.rb b/plugins/pjax/lib/pjax_plugin.rb
new file mode 100644
index 0000000..a31d564
--- /dev/null
+++ b/plugins/pjax/lib/pjax_plugin.rb
@@ -0,0 +1,52 @@
+class PjaxPlugin < Noosfero::Plugin
+
+  def self.plugin_name
+    I18n.t('pjax_plugin.lib.plugin.name')
+  end
+
+  def self.plugin_description
+    I18n.t('pjax_plugin.lib.plugin.description')
+  end
+
+  def stylesheet?
+    true
+  end
+
+  def js_files
+    ['jquery.pjax.js', 'patchwork.js', 'loading-overlay', 'pjax', ].map{ |j| "javascripts/#{j}" }
+  end
+
+  def head_ending
+    #TODO: add pjax meta
+  end
+
+  def body_beginning
+    lambda{ render 'pjax_layouts/load_state_script' }
+  end
+
+  PjaxCheck = lambda do
+    return unless request.headers['X-PJAX']
+    # raise makes pjax fallback to a regular request
+    raise "Pjax can't be used here" if params[:controller] == 'account'
+
+    @pjax = true
+    @pjax_loaded_themes = request.headers['X-PJAX-Themes'].to_s.split(',') || []
+
+    unless self.respond_to? :get_layout_with_pjax
+      self.class.send :define_method, :get_layout_with_pjax do
+        if @pjax then 'pjax' else get_layout_without_pjax end
+      end
+      self.class.alias_method_chain :get_layout, :pjax
+    end
+  end
+
+  def application_controller_filters
+    [{
+      :type => 'before_filter', :method_name => 'pjax_check',
+      :options => {}, :block => PjaxCheck,
+    }]
+  end
+
+  protected
+
+end
diff --git a/plugins/pjax/locales/en.yml b/plugins/pjax/locales/en.yml
new file mode 100644
index 0000000..b3735c9
--- /dev/null
+++ b/plugins/pjax/locales/en.yml
@@ -0,0 +1,12 @@
+
+"en": &en-US
+  pjax_plugin:
+    lib:
+      plugin:
+        name: "pjax plugin"
+        description: "Use pjax for page's links"
+
+'en_US':
+  <<: *en-US
+'en-US':
+  <<: *en-US
diff --git a/plugins/pjax/locales/pt.yml b/plugins/pjax/locales/pt.yml
new file mode 100644
index 0000000..6e13ef6
--- /dev/null
+++ b/plugins/pjax/locales/pt.yml
@@ -0,0 +1,13 @@
+
+"pt": &pt-BR
+  pjax_plugin:
+    lib:
+      plugin:
+        name: "pjax plugin"
+        description: "Usa o pjax para os links da página"
+
+'pt_BR':
+  <<: *pt-BR
+'pt-BR':
+  <<: *pt-BR
+
diff --git a/plugins/pjax/public/images/loading-gears.gif b/plugins/pjax/public/images/loading-gears.gif
new file mode 100644
index 0000000..3807222
Binary files /dev/null and b/plugins/pjax/public/images/loading-gears.gif differ
diff --git a/plugins/pjax/public/images/loading-overlay.gif b/plugins/pjax/public/images/loading-overlay.gif
new file mode 100644
index 0000000..e71258e
Binary files /dev/null and b/plugins/pjax/public/images/loading-overlay.gif differ
diff --git a/plugins/pjax/public/javascripts/jquery.pjax.js b/plugins/pjax/public/javascripts/jquery.pjax.js
new file mode 100644
index 0000000..b873b64
--- /dev/null
+++ b/plugins/pjax/public/javascripts/jquery.pjax.js
@@ -0,0 +1,838 @@
+// jquery.pjax.js
+// copyright chris wanstrath
+// https://github.com/defunkt/jquery-pjax
+
+(function($){
+
+// When called on a container with a selector, fetches the href with
+// ajax into the container or with the data-pjax attribute on the link
+// itself.
+//
+// Tries to make sure the back button and ctrl+click work the way
+// you'd expect.
+//
+// Exported as $.fn.pjax
+//
+// Accepts a jQuery ajax options object that may include these
+// pjax specific options:
+//
+//
+// container - Where to stick the response body. Usually a String selector.
+//             $(container).html(xhr.responseBody)
+//             (default: current jquery context)
+//      push - Whether to pushState the URL. Defaults to true (of course).
+//   replace - Want to use replaceState instead? That's cool.
+//
+// For convenience the second parameter can be either the container or
+// the options object.
+//
+// Returns the jQuery object
+function fnPjax(selector, container, options) {
+  var context = this
+  return this.on('click.pjax', selector, function(event) {
+    var opts = $.extend({}, optionsFor(container, options))
+    if (!opts.container)
+      opts.container = $(this).attr('data-pjax') || context
+    handleClick(event, opts)
+  })
+}
+
+// Public: pjax on click handler
+//
+// Exported as $.pjax.click.
+//
+// event   - "click" jQuery.Event
+// options - pjax options
+//
+// Examples
+//
+//   $(document).on('click', 'a', $.pjax.click)
+//   // is the same as
+//   $(document).pjax('a')
+//
+//  $(document).on('click', 'a', function(event) {
+//    var container = $(this).closest('[data-pjax-container]')
+//    $.pjax.click(event, container)
+//  })
+//
+// Returns nothing.
+function handleClick(event, container, options) {
+  options = optionsFor(container, options)
+
+  var link = event.currentTarget
+
+  if (link.tagName.toUpperCase() !== 'A')
+    throw "$.fn.pjax or $.pjax.click requires an anchor element"
+
+  // Middle click, cmd click, and ctrl click should open
+  // links in a new tab as normal.
+  if ( event.which > 1 || event.metaKey || event.ctrlKey || event.shiftKey || event.altKey )
+    return
+
+  // Ignore cross origin links
+  if ( location.protocol !== link.protocol || location.hostname !== link.hostname )
+    return
+
+  // Ignore anchors on the same page
+  if (link.hash && link.href.replace(link.hash, '') ===
+       location.href.replace(location.hash, ''))
+    return
+
+  // Ignore empty anchor "foo.html#"
+  if (link.href === location.href + '#')
+    return
+
+  var defaults = {
+    url: link.href,
+    container: $(link).attr('data-pjax'),
+    target: link
+  }
+
+  var opts = $.extend({}, defaults, options)
+  var clickEvent = $.Event('pjax:click')
+  $(link).trigger(clickEvent, [opts])
+
+  if (!clickEvent.isDefaultPrevented()) {
+    pjax(opts)
+    event.preventDefault()
+  }
+}
+
+// Public: pjax on form submit handler
+//
+// Exported as $.pjax.submit
+//
+// event   - "click" jQuery.Event
+// options - pjax options
+//
+// Examples
+//
+//  $(document).on('submit', 'form', function(event) {
+//    var container = $(this).closest('[data-pjax-container]')
+//    $.pjax.submit(event, container)
+//  })
+//
+// Returns nothing.
+function handleSubmit(event, container, options) {
+  options = optionsFor(container, options)
+
+  var form = event.currentTarget
+
+  if (form.tagName.toUpperCase() !== 'FORM')
+    throw "$.pjax.submit requires a form element"
+
+  var defaults = {
+    type: form.method.toUpperCase(),
+    url: form.action,
+    data: $(form).serializeArray(),
+    container: $(form).attr('data-pjax'),
+    target: form
+  }
+
+  pjax($.extend({}, defaults, options))
+
+  event.preventDefault()
+}
+
+// Loads a URL with ajax, puts the response body inside a container,
+// then pushState()'s the loaded URL.
+//
+// Works just like $.ajax in that it accepts a jQuery ajax
+// settings object (with keys like url, type, data, etc).
+//
+// Accepts these extra keys:
+//
+// container - Where to stick the response body.
+//             $(container).html(xhr.responseBody)
+//      push - Whether to pushState the URL. Defaults to true (of course).
+//   replace - Want to use replaceState instead? That's cool.
+//
+// Use it just like $.ajax:
+//
+//   var xhr = $.pjax({ url: this.href, container: '#main' })
+//   console.log( xhr.readyState )
+//
+// Returns whatever $.ajax returns.
+function pjax(options) {
+  options = $.extend(true, {}, $.ajaxSettings, pjax.defaults, options)
+
+  if ($.isFunction(options.url)) {
+    options.url = options.url()
+  }
+
+  var target = options.target
+
+  var hash = parseURL(options.url).hash
+
+  var context = options.context = findContainerFor(options.container)
+
+  // We want the browser to maintain two separate internal caches: one
+  // for pjax'd partial page loads and one for normal page loads.
+  // Without adding this secret parameter, some browsers will often
+  // confuse the two.
+  if (!options.data) options.data = {}
+  options.data._pjax = context.selector
+
+  function fire(type, args) {
+    var event = $.Event(type, { relatedTarget: target })
+    context.trigger(event, args)
+    return !event.isDefaultPrevented()
+  }
+
+  var timeoutTimer
+
+  options.beforeSend = function(xhr, settings) {
+    // No timeout for non-GET requests
+    // Its not safe to request the resource again with a fallback method.
+    if (settings.type !== 'GET') {
+      settings.timeout = 0
+    }
+
+    xhr.setRequestHeader('X-PJAX', 'true')
+    xhr.setRequestHeader('X-PJAX-Container', context.selector)
+
+    if (!fire('pjax:beforeSend', [xhr, settings]))
+      return false
+
+    if (settings.timeout > 0) {
+      timeoutTimer = setTimeout(function() {
+        if (fire('pjax:timeout', [xhr, options]))
+          xhr.abort('timeout')
+      }, settings.timeout)
+
+      // Clear timeout setting so jquerys internal timeout isn't invoked
+      settings.timeout = 0
+    }
+
+    options.requestUrl = parseURL(settings.url).href
+  }
+
+  options.complete = function(xhr, textStatus) {
+    if (timeoutTimer)
+      clearTimeout(timeoutTimer)
+
+    fire('pjax:complete', [xhr, textStatus, options])
+
+    fire('pjax:end', [xhr, options])
+  }
+
+  options.error = function(xhr, textStatus, errorThrown) {
+    var container = extractContainer("", xhr, options)
+
+    var allowed = fire('pjax:error', [xhr, textStatus, errorThrown, options])
+    if (options.type == 'GET' && textStatus !== 'abort' && allowed) {
+      locationReplace(container.url)
+    }
+  }
+
+  options.success = function(data, status, xhr) {
+    // If $.pjax.defaults.version is a function, invoke it first.
+    // Otherwise it can be a static string.
+    var currentVersion = (typeof $.pjax.defaults.version === 'function') ?
+      $.pjax.defaults.version() :
+      $.pjax.defaults.version
+
+    var latestVersion = xhr.getResponseHeader('X-PJAX-Version')
+
+    var container = extractContainer(data, xhr, options)
+
+    // If there is a layout version mismatch, hard load the new url
+    if (currentVersion && latestVersion && currentVersion !== latestVersion) {
+      locationReplace(container.url)
+      return
+    }
+
+    // If the new response is missing a body, hard load the page
+    if (!container.contents) {
+      locationReplace(container.url)
+      return
+    }
+
+    pjax.state = {
+      id: options.id || uniqueId(),
+      url: container.url,
+      title: container.title,
+      container: context.selector,
+      fragment: options.fragment,
+      timeout: options.timeout
+    }
+
+    if (options.push || options.replace) {
+      window.history.replaceState(pjax.state, container.title, container.url)
+    }
+
+    // Clear out any focused controls before inserting new page contents.
+    document.activeElement.blur()
+
+    if (container.title) document.title = container.title
+    context.html(container.contents)
+
+    // FF bug: Won't autofocus fields that are inserted via JS.
+    // This behavior is incorrect. So if theres no current focus, autofocus
+    // the last field.
+    //
+    // http://www.w3.org/html/wg/drafts/html/master/forms.html
+    var autofocusEl = context.find('input[autofocus], textarea[autofocus]').last()[0]
+    if (autofocusEl && document.activeElement !== autofocusEl) {
+      autofocusEl.focus();
+    }
+
+    executeScriptTags(container.scripts)
+
+    // Scroll to top by default
+    if (typeof options.scrollTo === 'number')
+      $(window).scrollTop(options.scrollTo)
+
+    // If the URL has a hash in it, make sure the browser
+    // knows to navigate to the hash.
+    if ( hash !== '' ) {
+      // Avoid using simple hash set here. Will add another history
+      // entry. Replace the url with replaceState and scroll to target
+      // by hand.
+      //
+      //   window.location.hash = hash
+      var url = parseURL(container.url)
+      url.hash = hash
+
+      pjax.state.url = url.href
+      window.history.replaceState(pjax.state, container.title, url.href)
+
+      var target = $(url.hash)
+      if (target.length) $(window).scrollTop(target.offset().top)
+    }
+
+    fire('pjax:success', [data, status, xhr, options])
+  }
+
+
+  // Initialize pjax.state for the initial page load. Assume we're
+  // using the container and options of the link we're loading for the
+  // back button to the initial page. This ensures good back button
+  // behavior.
+  if (!pjax.state) {
+    pjax.state = {
+      id: uniqueId(),
+      url: window.location.href,
+      title: document.title,
+      container: context.selector,
+      fragment: options.fragment,
+      timeout: options.timeout
+    }
+    window.history.replaceState(pjax.state, document.title)
+  }
+
+  // Cancel the current request if we're already pjaxing
+  var xhr = pjax.xhr
+  if ( xhr && xhr.readyState < 4) {
+    xhr.onreadystatechange = $.noop
+    xhr.abort()
+  }
+
+  pjax.options = options
+  var xhr = pjax.xhr = $.ajax(options)
+
+  if (xhr.readyState > 0) {
+    if (options.push && !options.replace) {
+      // Cache current container element before replacing it
+      cachePush(pjax.state.id, context.clone().contents())
+
+      window.history.pushState(null, "", stripPjaxParam(options.requestUrl))
+    }
+
+    fire('pjax:start', [xhr, options])
+    fire('pjax:send', [xhr, options])
+  }
+
+  return pjax.xhr
+}
+
+// Public: Reload current page with pjax.
+//
+// Returns whatever $.pjax returns.
+function pjaxReload(container, options) {
+  var defaults = {
+    url: window.location.href,
+    push: false,
+    replace: true,
+    scrollTo: false
+  }
+
+  return pjax($.extend(defaults, optionsFor(container, options)))
+}
+
+// Internal: Hard replace current state with url.
+//
+// Work for around WebKit
+//   https://bugs.webkit.org/show_bug.cgi?id=93506
+//
+// Returns nothing.
+function locationReplace(url) {
+  window.history.replaceState(null, "", "#")
+  window.location.replace(url)
+}
+
+
+var initialPop = true
+var initialURL = window.location.href
+var initialState = window.history.state
+
+// Initialize $.pjax.state if possible
+// Happens when reloading a page and coming forward from a different
+// session history.
+if (initialState && initialState.container) {
+  pjax.state = initialState
+}
+
+// Non-webkit browsers don't fire an initial popstate event
+if ('state' in window.history) {
+  initialPop = false
+}
+
+// popstate handler takes care of the back and forward buttons
+//
+// You probably shouldn't use pjax on pages with other pushState
+// stuff yet.
+function onPjaxPopstate(event) {
+  var state = event.state
+
+  if (state && state.container) {
+    // When coming forward from a separate history session, will get an
+    // initial pop with a state we are already at. Skip reloading the current
+    // page.
+    if (initialPop && initialURL == state.url) return
+
+    // If popping back to the same state, just skip.
+    // Could be clicking back from hashchange rather than a pushState.
+    if (pjax.state.id === state.id) return
+
+    var container = $(state.container)
+    if (container.length) {
+      var direction, contents = cacheMapping[state.id]
+
+      if (pjax.state) {
+        // Since state ids always increase, we can deduce the history
+        // direction from the previous state.
+        direction = pjax.state.id < state.id ? 'forward' : 'back'
+
+        // Cache current container before replacement and inform the
+        // cache which direction the history shifted.
+        cachePop(direction, pjax.state.id, container.clone().contents())
+      }
+
+      var popstateEvent = $.Event('pjax:popstate', {
+        state: state,
+        direction: direction
+      })
+      container.trigger(popstateEvent)
+
+      var options = {
+        id: state.id,
+        url: state.url,
+        container: container,
+        push: false,
+        fragment: state.fragment,
+        timeout: state.timeout,
+        scrollTo: false
+      }
+
+      if (contents) {
+        container.trigger('pjax:start', [null, options])
+
+        if (state.title) document.title = state.title
+        container.html(contents)
+        pjax.state = state
+
+        container.trigger('pjax:end', [null, options])
+      } else {
+        pjax(options)
+      }
+
+      // Force reflow/relayout before the browser tries to restore the
+      // scroll position.
+      container[0].offsetHeight
+    } else {
+      locationReplace(location.href)
+    }
+  }
+  initialPop = false
+}
+
+// Fallback version of main pjax function for browsers that don't
+// support pushState.
+//
+// Returns nothing since it retriggers a hard form submission.
+function fallbackPjax(options) {
+  var url = $.isFunction(options.url) ? options.url() : options.url,
+      method = options.type ? options.type.toUpperCase() : 'GET'
+
+  var form = $('<form>', {
+    method: method === 'GET' ? 'GET' : 'POST',
+    action: url,
+    style: 'display:none'
+  })
+
+  if (method !== 'GET' && method !== 'POST') {
+    form.append($('<input>', {
+      type: 'hidden',
+      name: '_method',
+      value: method.toLowerCase()
+    }))
+  }
+
+  var data = options.data
+  if (typeof data === 'string') {
+    $.each(data.split('&'), function(index, value) {
+      var pair = value.split('=')
+      form.append($('<input>', {type: 'hidden', name: pair[0], value: pair[1]}))
+    })
+  } else if (typeof data === 'object') {
+    for (key in data)
+      form.append($('<input>', {type: 'hidden', name: key, value: data[key]}))
+  }
+
+  $(document.body).append(form)
+  form.submit()
+}
+
+// Internal: Generate unique id for state object.
+//
+// Use a timestamp instead of a counter since ids should still be
+// unique across page loads.
+//
+// Returns Number.
+function uniqueId() {
+  return (new Date).getTime()
+}
+
+// Internal: Strips _pjax param from url
+//
+// url - String
+//
+// Returns String.
+function stripPjaxParam(url) {
+  return url
+    .replace(/\?_pjax=[^&]+&?/, '?')
+    .replace(/_pjax=[^&]+&?/, '')
+    .replace(/[\?&]$/, '')
+}
+
+// Internal: Parse URL components and returns a Locationish object.
+//
+// url - String URL
+//
+// Returns HTMLAnchorElement that acts like Location.
+function parseURL(url) {
+  var a = document.createElement('a')
+  a.href = url
+  return a
+}
+
+// Internal: Build options Object for arguments.
+//
+// For convenience the first parameter can be either the container or
+// the options object.
+//
+// Examples
+//
+//   optionsFor('#container')
+//   // => {container: '#container'}
+//
+//   optionsFor('#container', {push: true})
+//   // => {container: '#container', push: true}
+//
+//   optionsFor({container: '#container', push: true})
+//   // => {container: '#container', push: true}
+//
+// Returns options Object.
+function optionsFor(container, options) {
+  // Both container and options
+  if ( container && options )
+    options.container = container
+
+  // First argument is options Object
+  else if ( $.isPlainObject(container) )
+    options = container
+
+  // Only container
+  else
+    options = {container: container}
+
+  // Find and validate container
+  if (options.container)
+    options.container = findContainerFor(options.container)
+
+  return options
+}
+
+// Internal: Find container element for a variety of inputs.
+//
+// Because we can't persist elements using the history API, we must be
+// able to find a String selector that will consistently find the Element.
+//
+// container - A selector String, jQuery object, or DOM Element.
+//
+// Returns a jQuery object whose context is `document` and has a selector.
+function findContainerFor(container) {
+  container = $(container)
+
+  if ( !container.length ) {
+    throw "no pjax container for " + container.selector
+  } else if ( container.selector !== '' && container.context === document ) {
+    return container
+  } else if ( container.attr('id') ) {
+    return $('#' + container.attr('id'))
+  } else {
+    throw "cant get selector for pjax container!"
+  }
+}
+
+// Internal: Filter and find all elements matching the selector.
+//
+// Where $.fn.find only matches descendants, findAll will test all the
+// top level elements in the jQuery object as well.
+//
+// elems    - jQuery object of Elements
+// selector - String selector to match
+//
+// Returns a jQuery object.
+function findAll(elems, selector) {
+  return elems.filter(selector).add(elems.find(selector));
+}
+
+function parseHTML(html) {
+  return $.parseHTML(html, document, true)
+}
+
+// Internal: Extracts container and metadata from response.
+//
+// 1. Extracts X-PJAX-URL header if set
+// 2. Extracts inline <title> tags
+// 3. Builds response Element and extracts fragment if set
+//
+// data    - String response data
+// xhr     - XHR response
+// options - pjax options Object
+//
+// Returns an Object with url, title, and contents keys.
+function extractContainer(data, xhr, options) {
+  var obj = {}
+
+  // Prefer X-PJAX-URL header if it was set, otherwise fallback to
+  // using the original requested url.
+  obj.url = stripPjaxParam(xhr.getResponseHeader('X-PJAX-URL') || options.requestUrl)
+
+  // Attempt to parse response html into elements
+  if (/<html/i.test(data)) {
+    var $head = $(parseHTML(data.match(/<head[^>]*>([\s\S.]*)<\/head>/i)[0]))
+    var $body = $(parseHTML(data.match(/<body[^>]*>([\s\S.]*)<\/body>/i)[0]))
+  } else {
+    var $head = $body = $(parseHTML(data))
+  }
+
+  // If response data is empty, return fast
+  if ($body.length === 0)
+    return obj
+
+  // If there's a <title> tag in the header, use it as
+  // the page's title.
+  obj.title = findAll($head, 'title').last().text()
+
+  if (options.fragment) {
+    // If they specified a fragment, look for it in the response
+    // and pull it out.
+    if (options.fragment === 'body') {
+      var $fragment = $body
+    } else {
+      var $fragment = findAll($body, options.fragment).first()
+    }
+
+    if ($fragment.length) {
+      obj.contents = $fragment.contents()
+
+      // If there's no title, look for data-title and title attributes
+      // on the fragment
+      if (!obj.title)
+        obj.title = $fragment.attr('title') || $fragment.data('title')
+    }
+
+  } else if (!/<html/i.test(data)) {
+    obj.contents = $body
+  }
+
+  // Clean up any <title> tags
+  if (obj.contents) {
+    // Remove any parent title elements
+    obj.contents = obj.contents.not(function() { return $(this).is('title') })
+
+    // Then scrub any titles from their descendants
+    obj.contents.find('title').remove()
+
+    // Gather all script[src] elements
+    //obj.scripts = findAll(obj.contents, 'script[src]').remove()
+    obj.contents = obj.contents.not(obj.scripts)
+  }
+
+  // Trim any whitespace off the title
+  if (obj.title) obj.title = $.trim(obj.title)
+
+  return obj
+}
+
+// Load an execute scripts using standard script request.
+//
+// Avoids jQuery's traditional $.getScript which does a XHR request and
+// globalEval.
+//
+// scripts - jQuery object of script Elements
+//
+// Returns nothing.
+function executeScriptTags(scripts) {
+  if (!scripts) return
+
+  var existingScripts = $('script[src]')
+
+  scripts.each(function() {
+    var src = this.src
+    var matchedScripts = existingScripts.filter(function() {
+      return this.src === src
+    })
+    if (matchedScripts.length) return
+
+    var script = document.createElement('script')
+    script.type = $(this).attr('type')
+    script.src = $(this).attr('src')
+    document.head.appendChild(script)
+  })
+}
+
+// Internal: History DOM caching class.
+var cacheMapping      = {}
+var cacheForwardStack = []
+var cacheBackStack    = []
+
+// Push previous state id and container contents into the history
+// cache. Should be called in conjunction with `pushState` to save the
+// previous container contents.
+//
+// id    - State ID Number
+// value - DOM Element to cache
+//
+// Returns nothing.
+function cachePush(id, value) {
+  cacheMapping[id] = value
+  cacheBackStack.push(id)
+
+  // Remove all entires in forward history stack after pushing
+  // a new page.
+  while (cacheForwardStack.length)
+    delete cacheMapping[cacheForwardStack.shift()]
+
+  // Trim back history stack to max cache length.
+  while (cacheBackStack.length > pjax.defaults.maxCacheLength)
+    delete cacheMapping[cacheBackStack.shift()]
+}
+
+// Shifts cache from directional history cache. Should be
+// called on `popstate` with the previous state id and container
+// contents.
+//
+// direction - "forward" or "back" String
+// id        - State ID Number
+// value     - DOM Element to cache
+//
+// Returns nothing.
+function cachePop(direction, id, value) {
+  var pushStack, popStack
+  cacheMapping[id] = value
+
+  if (direction === 'forward') {
+    pushStack = cacheBackStack
+    popStack  = cacheForwardStack
+  } else {
+    pushStack = cacheForwardStack
+    popStack  = cacheBackStack
+  }
+
+  pushStack.push(id)
+  if (id = popStack.pop())
+    delete cacheMapping[id]
+}
+
+// Public: Find version identifier for the initial page load.
+//
+// Returns String version or undefined.
+function findVersion() {
+  return $('meta').filter(function() {
+    var name = $(this).attr('http-equiv')
+    return name && name.toUpperCase() === 'X-PJAX-VERSION'
+  }).attr('content')
+}
+
+// Install pjax functions on $.pjax to enable pushState behavior.
+//
+// Does nothing if already enabled.
+//
+// Examples
+//
+//     $.pjax.enable()
+//
+// Returns nothing.
+function enable() {
+  $.fn.pjax = fnPjax
+  $.pjax = pjax
+  $.pjax.enable = $.noop
+  $.pjax.disable = disable
+  $.pjax.click = handleClick
+  $.pjax.submit = handleSubmit
+  $.pjax.reload = pjaxReload
+  $.pjax.defaults = {
+    timeout: 650,
+    push: true,
+    replace: false,
+    type: 'GET',
+    dataType: 'html',
+    scrollTo: 0,
+    maxCacheLength: 20,
+    version: findVersion
+  }
+  $(window).on('popstate.pjax', onPjaxPopstate)
+}
+
+// Disable pushState behavior.
+//
+// This is the case when a browser doesn't support pushState. It is
+// sometimes useful to disable pushState for debugging on a modern
+// browser.
+//
+// Examples
+//
+//     $.pjax.disable()
+//
+// Returns nothing.
+function disable() {
+  $.fn.pjax = function() { return this }
+  $.pjax = fallbackPjax
+  $.pjax.enable = enable
+  $.pjax.disable = $.noop
+  $.pjax.click = $.noop
+  $.pjax.submit = $.noop
+  $.pjax.reload = function() { window.location.reload() }
+
+  $(window).off('popstate.pjax', onPjaxPopstate)
+}
+
+
+// Add the state property to jQuery's event object so we can use it in
+// $(window).bind('popstate')
+if ( $.inArray('state', $.event.props) < 0 )
+  $.event.props.push('state')
+
+// Is pjax supported by this browser?
+$.support.pjax =
+  window.history && window.history.pushState && window.history.replaceState &&
+  // pushState isn't reliable on iOS until 5.
+  !navigator.userAgent.match(/((iPod|iPhone|iPad).+\bOS\s+[1-4]|WebApps\/.+CFNetwork)/)
+
+$.support.pjax ? enable() : disable()
+
+})(jQuery);
diff --git a/plugins/pjax/public/javascripts/loading-overlay.js b/plugins/pjax/public/javascripts/loading-overlay.js
new file mode 100644
index 0000000..4c0950c
--- /dev/null
+++ b/plugins/pjax/public/javascripts/loading-overlay.js
@@ -0,0 +1,34 @@
+if (typeof loading_overlay === 'undefined') {
+
+// block user actions while making a post. Also indicate the network transaction
+loading_overlay = {
+
+  show: function (selector) {
+    var element = jQuery(selector);
+    var overlay = jQuery('<div>', {
+      class: 'loading-overlay',
+      css: {
+        width: element.outerWidth(),
+        height: element.outerHeight(),
+        left: element.position().left,
+        top: element.position().top,
+        marginLeft: parseFloat(element.css('margin-left')),
+        marginTop: parseFloat(element.css('margin-top')),
+        marginRight: parseFloat(element.css('margin-right')),
+        marginBottom: parseFloat(element.css('margin-bottom')),
+      },
+    }).appendTo(element).get(0);
+
+    overlay.dest = element;
+    element.loading_overlay = overlay;
+  },
+
+  hide: function (selector) {
+    var element = jQuery(selector);
+    var overlay = element.find('.loading-overlay');
+    overlay.remove();
+  },
+
+};
+
+}
diff --git a/plugins/pjax/public/javascripts/patchwork.js b/plugins/pjax/public/javascripts/patchwork.js
new file mode 100644
index 0000000..85fc29a
--- /dev/null
+++ b/plugins/pjax/public/javascripts/patchwork.js
@@ -0,0 +1,41 @@
+var patch = (function () {
+    /*jshint evil: true */
+
+    "use strict";
+
+    var global = new Function("return this;")(), // Get a reference to the global object
+        fnProps = Object.getOwnPropertyNames(Function); // Get the own ("static") properties of the Function constructor
+
+    return function (original, originalRef, patches) {
+
+        var ref = global[originalRef] = original, // Maintain a reference to the original constructor as a new property on the global object
+            args = [],
+            newRef, // This will be the new patched constructor
+            i;
+
+        patches.called = patches.called || originalRef; // If we are not patching static calls just pass them through to the original function
+
+        for (i = 0; i < original.length; i++) { // Match the arity of the original constructor
+            args[i] = "a" + i; // Give the arguments a name (native constructors don't care, but user-defined ones will break otherwise)
+        }
+
+        if (patches.constructed) { // This string is evaluated to create the patched constructor body in the case that we are patching newed calls
+            args.push("'use strict'; return (!!this ? " + patches.constructed + " : " + patches.called + ").apply(null, arguments);"); 
+        } else { // This string is evaluated to create the patched constructor body in the case that we are only patching static calls
+            args.push("'use strict'; return (!!this ? new (Function.prototype.bind.apply(" + originalRef + ", [{}].concat([].slice.call(arguments))))() : " + patches.called + ".apply(null, arguments));");
+        }
+
+        newRef = new (Function.prototype.bind.apply(Function, [{}].concat(args)))(); // Create a new function to wrap the patched constructor
+        newRef.prototype = original.prototype; // Keep a reference to the original prototype to ensure instances of the patch appear as instances of the original
+        newRef.prototype.constructor = newRef; // Ensure the constructor of patched instances is the patched constructor
+
+        Object.getOwnPropertyNames(ref).forEach(function (property) { // Add any "static" properties of the original constructor to the patched one
+            if (fnProps.indexOf(property) < 0) { // Don't include static properties of Function since the patched constructor will already have them
+                newRef[property] = ref[property];
+            }
+        });
+
+        return newRef; // Return the patched constructor
+    };
+
+}());
\ No newline at end of file
diff --git a/plugins/pjax/public/javascripts/pjax.js b/plugins/pjax/public/javascripts/pjax.js
new file mode 100644
index 0000000..85bc418
--- /dev/null
+++ b/plugins/pjax/public/javascripts/pjax.js
@@ -0,0 +1,179 @@
+
+pjax = {
+
+  states: {},
+  current_state: null,
+  initial_state: null,
+
+  themes: {},
+
+  load: function() {
+    var target = jQuery('#content');
+    var content = jQuery('#content-inner');
+    var loadingTarget = jQuery('#content');
+
+    var container = '.pjax-container';
+    target.addClass('pjax-container');
+
+    jQuery(document).pjax('a', container);
+
+    jQuery(document).on('pjax:beforeSend', function(event, xhr, settings) {
+      var themes = jQuery.map(pjax.themes, function(theme) { return theme.id }).join(',');
+      xhr.setRequestHeader('X-PJAX-Themes', themes);
+    });
+
+    jQuery(document).on('pjax:send', function(event) {
+      /* initial state is only initialized after the first navigation,
+       * so we do associate it here */
+      if (!pjax.states[jQuery.pjax.state.id])
+        pjax.states[jQuery.pjax.state.id] = pjax.initial_state;
+
+      loading_overlay.show(loadingTarget);
+    });
+    jQuery(document).on('pjax:complete', function(event) {
+      loading_overlay.hide(loadingTarget);
+    });
+
+    jQuery(document).on('pjax:popstate', function(event) {
+      pjax.popstate(event.state, event.direction);
+    });
+
+    jQuery(document).on('pjax:timeout', function(event) {
+      // Prevent default timeout redirection behavior
+      event.preventDefault();
+    });
+
+    pjax.patch.document_write();
+    //pjax.patch.xhr();
+  },
+
+  update: function(state, from_state) {
+    if (!from_state)
+      from_state = this.current_state || this.initial_state;
+
+    if (state.layout_template != from_state.layout_template) {
+      var lt_css = jQuery('head link[href^="/designs/templates"]');
+      lt_css.attr('href', lt_css.attr('href').replace(/templates\/.+\/stylesheets/, 'templates/'+state.layout_template+'/stylesheets'));
+    }
+
+    if (state.theme.id != from_state.theme.id)
+      this.update_theme(state, from_state);
+
+    document.body.className = state.body_classes;
+
+    render_all_jquery_ui_widgets();
+
+    userDataCallback(noosfero.user_data);
+
+    // theme's update dependent on content. must be last thing to run
+    if (state.theme_update_js)
+      jQuery.globalEval(state.theme_update_js);
+
+    pjax.current_state = state;
+  },
+
+  update_theme: function(state, from_state) {
+    // wait for the new theme css load
+    this.loading.show(function() {
+      return !pjax.css_loaded('/designs/themes/'+state.theme.id+'/style.css');
+    });
+
+    var css = jQuery('head link[href^="/designs/themes/'+from_state.theme.id+'/style"]');
+    css.attr('href', css.attr('href').replace(/themes\/.+\/style/, 'themes/'+state.theme.id+'/style'));
+
+    jQuery('head link[rel="shortcut icon"]').attr('href', state.theme.favicon);
+
+    jQuery('#theme-header').html(state.theme.header);
+    jQuery('#site-title').html(state.theme.site_title);
+    jQuery('#navigation ul').html(state.theme.extra_navigation);
+    jQuery('#theme-footer').html(state.theme.footer);
+
+    jQuery('head script[src^="/designs/themes/'+from_state.theme.id+'/theme.js"]').remove();
+    if (state.theme.js_src) {
+      var script = document.createElement('script');
+      script.type = 'text/javascript', script.src = state.theme.js_src;
+      document.head.appendChild(script);
+    }
+  },
+
+  popstate: function(state, direction) {
+    state = pjax.states[state.id];
+    var from_state = pjax.states[jQuery.pjax.state.id];
+    pjax.update(state, from_state);
+  },
+
+  loading: {
+    repeatCallback: null,
+
+    show: function(repeatCallback) {
+      this.repeatCallback = repeatCallback;
+      this.gears().show();
+      this.pool();
+    },
+
+    pool: function() {
+      setTimeout(this.timeout, 50);
+    },
+
+    timeout: function() {
+      var repeat = pjax.loading.repeatCallback();
+      if (repeat)
+        pjax.loading.pool();
+      else
+        pjax.loading.gears().hide();
+    },
+
+    gears: function() {
+      var gears = jQuery('#pjax-loading-gears');
+      if (!gears.length) {
+        gears = jQuery('<div>', {
+          id: 'pjax-loading-gears',
+        });
+        gears.appendTo(document.body);
+      }
+
+      return gears;
+    },
+  },
+
+  css_loaded: function(path) {
+    var found = false;
+    for (index in document.styleSheets) {
+      var stylesheet = document.styleSheets[index];
+      if (!stylesheet.href)
+        continue;
+
+      found = stylesheet.href.indexOf(path) != -1;
+      if (found)
+        break;
+    }
+    return found;
+  },
+
+  patch: {
+
+    document_write: function () {
+      // document.write doesn't work after ready state
+      document._write = document.write;
+      document.write = function (data) {
+        if (document.readyState != 'loading')
+          content.append(data);
+        else
+          document._write(data);
+      };
+    },
+
+    xhr: function () {
+      XMLHttpRequest = patch(XMLHttpRequest, '_XMLHttpRequest', {
+        constructed: function() {
+          console.log('here')
+
+          var args = [].slice.call(arguments);
+          return new (Function.prototype.bind.apply(_XMLHttpRequest, [{}].concat(args)));
+        },
+      });
+    },
+
+  },
+};
+
diff --git a/plugins/pjax/public/style.css b/plugins/pjax/public/style.css
new file mode 120000
index 0000000..e6cf289
--- /dev/null
+++ b/plugins/pjax/public/style.css
@@ -0,0 +1 @@
+stylesheets/pjax.css
\ No newline at end of file
diff --git a/plugins/pjax/public/stylesheets/_loading-overlay.scss b/plugins/pjax/public/stylesheets/_loading-overlay.scss
new file mode 100644
index 0000000..24d6edd
--- /dev/null
+++ b/plugins/pjax/public/stylesheets/_loading-overlay.scss
@@ -0,0 +1,7 @@
+
+.loading-overlay {
+  position: absolute;
+  background-image: url(/plugins/pjax/images/loading-overlay.gif);
+  opacity: 0.1;
+  z-index: 10;
+}
diff --git a/plugins/pjax/public/stylesheets/pjax.css b/plugins/pjax/public/stylesheets/pjax.css
new file mode 100644
index 0000000..bad1173
--- /dev/null
+++ b/plugins/pjax/public/stylesheets/pjax.css
@@ -0,0 +1,16 @@
+.loading-overlay {
+  position: absolute;
+  background-image: url(/plugins/pjax/images/loading-overlay.gif);
+  opacity: 0.1;
+  z-index: 10; }
+
+#pjax-loading-gears {
+  display: none;
+  position: fixed;
+  top: 0;
+  left: 0;
+  right: 0;
+  bottom: 0;
+  z-index: 9999;
+  background: white url(/plugins/pjax/images/loading-gears.gif) no-repeat center center;
+  background-size: 5%; }
diff --git a/plugins/pjax/public/stylesheets/pjax.scss b/plugins/pjax/public/stylesheets/pjax.scss
new file mode 100644
index 0000000..94a9abb
--- /dev/null
+++ b/plugins/pjax/public/stylesheets/pjax.scss
@@ -0,0 +1,14 @@
+@import 'loading-overlay';
+
+#pjax-loading-gears {
+  display: none; //default
+  position: fixed;
+  top: 0;
+  left: 0;
+  right: 0;
+  bottom: 0;
+  z-index: 9999;
+  background: white url(/plugins/pjax/images/loading-gears.gif) no-repeat center center;
+  background-size: 5%;
+}
+
diff --git a/plugins/pjax/vendor/plugins/xhr_status_except_pjax/init.rb b/plugins/pjax/vendor/plugins/xhr_status_except_pjax/init.rb
new file mode 100644
index 0000000..57d1c0e
--- /dev/null
+++ b/plugins/pjax/vendor/plugins/xhr_status_except_pjax/init.rb
@@ -0,0 +1,11 @@
+class ActionDispatch::Request
+
+  def xml_http_request_with_pjax?
+    xml_http_request_without_pjax? and @env['HTTP_X_PJAX'].blank?
+  end
+
+end
+
+ ActionDispatch::Request.send :alias_method_chain, :xml_http_request?, :pjax
+ ActionDispatch::Request.send :alias_method, :xhr?, :xml_http_request?
+
diff --git a/plugins/pjax/views/layouts/pjax.html.erb b/plugins/pjax/views/layouts/pjax.html.erb
new file mode 100644
index 0000000..1056f5a
--- /dev/null
+++ b/plugins/pjax/views/layouts/pjax.html.erb
@@ -0,0 +1,19 @@
+<%
+  update_js = render(:file => "#{Rails.root}/public/designs/themes/#{current_theme}/pjax_update.js.erb").to_json rescue nil
+%>
+
+<title><%= h page_title %></title>
+
+<%= render :file => "#{Rails.root}/public/designs/themes/#{current_theme}/layouts/_content.html.erb" rescue
+    render "layouts/content" %>
+
+<%= javascript_tag do %>
+  <%= render 'pjax_shared/load_state.js' %>
+
+  <% if update_js %>
+    state.theme_update_js = <%= update_js %>;
+  <% end %>
+
+  pjax.update(state);
+<% end %>
+
diff --git a/plugins/pjax/views/pjax_layouts/_load_state_script.html.erb b/plugins/pjax/views/pjax_layouts/_load_state_script.html.erb
new file mode 100644
index 0000000..4883b50
--- /dev/null
+++ b/plugins/pjax/views/pjax_layouts/_load_state_script.html.erb
@@ -0,0 +1,7 @@
+<script type="text/javascript">
+  jQuery(function($) {
+    pjax.load();
+
+    <%= render 'pjax_shared/load_state.js' %>
+  });
+</script>
diff --git a/plugins/pjax/views/pjax_shared/_load_state.js.erb b/plugins/pjax/views/pjax_shared/_load_state.js.erb
new file mode 100644
index 0000000..5c6fe9b
--- /dev/null
+++ b/plugins/pjax/views/pjax_shared/_load_state.js.erb
@@ -0,0 +1,26 @@
+var theme_id = <%= current_theme.to_json %>;
+
+<% if @pjax_loaded_themes.blank? or not @pjax_loaded_themes.include? current_theme %>
+  pjax.themes[theme_id] = {
+    id: theme_id,
+    favicon: '<%= image_path theme_favicon %>',
+    header: '<%= escape_javascript theme_header %>',
+    site_title: '<%= escape_javascript theme_site_title %>',
+    extra_navigation: '<%= escape_javascript theme_extra_navigation %>',
+    footer: '<%= escape_javascript theme_footer %>',
+    js_src: <%= theme_javascript_src.to_json %>,
+  };
+<% end %>
+
+var state = {
+  body_classes: <%= body_classes.to_json %>,
+  layout_template: <%= layout_template.to_json %>,
+  theme: pjax.themes[theme_id],
+};
+
+if (jQuery.pjax.state)
+  pjax.states[jQuery.pjax.state.id] = state;
+
+if (!pjax.initial_state)
+  pjax.initial_state = state;
+
--
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