var notificationUpdater;

  en4.core.runonce.add(function(){
    new OverText($('global_search_field'), {
      poll: true,
      pollInterval: 500,
      positionOptions: {
        position: ( en4.orientation == 'rtl' ? 'upperRight' : 'upperLeft' ),
        edge: ( en4.orientation == 'rtl' ? 'upperRight' : 'upperLeft' ),
        offset: {
          x: ( en4.orientation == 'rtl' ? -4 : 4 ),
          y: 2
        }
      }
    });
    
    new OverText($('global_email'), {
      poll: true,
      pollInterval: 500,
      positionOptions: {
        position: ( en4.orientation == 'rtl' ? 'upperRight' : 'upperLeft' ),
        edge: ( en4.orientation == 'rtl' ? 'upperRight' : 'upperLeft' ),
        offset: {
          x: ( en4.orientation == 'rtl' ? -4 : 4 ),
          y: 2
        }
      }
    });
    
    new OverText($('global_password'), {
      poll: true,
      pollInterval: 500,
      positionOptions: {
        position: ( en4.orientation == 'rtl' ? 'upperRight' : 'upperLeft' ),
        edge: ( en4.orientation == 'rtl' ? 'upperRight' : 'upperLeft' ),
        offset: {
          x: ( en4.orientation == 'rtl' ? -4 : 4 ),
          y: 2
        }
      }
    });

    if($('notifications_markread_link')){
      $('notifications_markread_link').addEvent('click', function() {
        //$('notifications_markread').setStyle('display', 'none');
        en4.activity.hideNotifications('<?php echo $this->string()->escapeJavascript($this->translate("0"));?>');
      });
    }

    <?php if ($this->updateSettings && $this->viewer->getIdentity()): ?>
    notificationUpdater = new NotificationUpdateHandler({
              'delay' : <?php echo $this->updateSettings;?>
            });
    notificationUpdater.start();
    window._notificationUpdater = notificationUpdater;
    <?php endif;?>
  });


  var toggleUpdatesPulldown = function(event, element, user_id) {
    if( element.className=='updates_pulldown' ) {
      element.className= 'updates_pulldown_active';
      showNotifications();
    } else {
      element.className='updates_pulldown';
    }
  }

  var showNotifications = function() {
    new Request.HTML({
      'url' : en4.core.baseUrl + 'activity/notifications/pulldown',
      'data' : {
        'format' : 'html',
        'page' : 1
      },
      'onComplete' : function(responseTree, responseElements, responseHTML, responseJavaScript) {

        if(responseHTML){
          // hide loading icon
          if($('notifications_loading')) $('notifications_loading').setStyle('display', 'none');

          $('notifications_menu').innerHTML = responseHTML;
          $('notifications_menu').addEvent('click', function(event){
            event.stop(); //Prevents the browser from following the link.

            var current_link = event.target;
            var notification_li = $(current_link).getParent('li');

            // if this is true, then the user clicked on the li element itself
            if (notification_li.id == 'core_menu_mini_menu_update') notification_li = current_link;

            var forward_link;
            if(current_link.get('href')){
              forward_link = current_link.get('href');
            }
            else{
              forward_link = $(current_link).getElements('a:last-child').get('href');
            }

            if(notification_li.get('class')=='notifications_unread'){
              notification_li.removeClass('notifications_unread');
              en4.core.request.send(new Request.JSON({
                url : en4.core.baseUrl + 'activity/notifications/markread',
                data : {
                  format     : 'json',
                  'actionid' : notification_li.get('value')
                },
                onSuccess : window.location = forward_link
              }));
            }
            else window.location = forward_link;
          });
        }
        else $('notifications_loading').innerHTML = '<?php echo $this->string()->escapeJavascript($this->translate("You have no new updates."));?>';
      }
    }).send();
  };

  var toggleAccountPulldown = function(event, element, user_id) {
    if( element.className=='account_pulldown' ) {
      element.className= 'account_pulldown_active';
      showNotifications();
    } else {
      element.className='account_pulldown';
    } 
  }