create a pooling or anything else to check whatever a new ticket has occured... without refreshing the page the new ticket should appear with a notification...
tickets.php:
<?php
/*************************************************************************
    tickets.php

    Handles all tickets related actions.

    Peter Rotich <peter@osticket.com>
    Copyright (c)  2006-2013 osTicket
    http://www.osticket.com

    Released under the GNU General Public License WITHOUT ANY WARRANTY.
    See LICENSE.TXT for details.

    vim: expandtab sw=4 ts=4 sts=4:
**********************************************************************/

require('staff.inc.php');
require_once(INCLUDE_DIR.'class.ticket.php');
require_once(INCLUDE_DIR.'class.dept.php');
require_once(INCLUDE_DIR.'class.filter.php');
require_once(INCLUDE_DIR.'class.canned.php');
require_once(INCLUDE_DIR.'class.json.php');
require_once(INCLUDE_DIR.'class.dynamic_forms.php');
require_once(INCLUDE_DIR.'class.export.php');       // For paper sizes



// Fetch ticket queues organized by root and sub-queues
$queues = CustomQueue::getHierarchicalQueues($thisstaff);

$page='';
$ticket = $user = null; //clean start.
$redirect = false;
//LOCKDOWN...See if the id provided is actually valid and if the user has access.
if(isset($_REQUEST['id']) || isset($_REQUEST['number'])) {
    if($_REQUEST['id'] && !($ticket=Ticket::lookup($_REQUEST['id'])))
         $errors['err']=sprintf(__('%s: Unknown or invalid ID.'), __('ticket'));
    elseif($_REQUEST['number'] && !($ticket=Ticket::lookup(array('number' => $_REQUEST['number']))))
         $errors['err']=sprintf(__('%s: Unknown or invalid number.'), __('ticket'));
     elseif(!$ticket || !$ticket->checkStaffPerm($thisstaff)) {
         $errors['err']=__('Access denied. Contact admin if you believe this is in error');
         $ticket=null; //Clear ticket obj.
     }
}

if (!$ticket) {
    // Display a ticket queue. Decide the contents
    $queue_id = null;

    // Search for user
    if (isset($_REQUEST['uid']))
        $user = User::lookup($_REQUEST['uid']);

    if (isset($_REQUEST['email']))
        $user = User::lookupByEmail($_REQUEST['email']);

    if ($user
            && $_GET['a'] !== 'open'
    ) {
        $criteria = [
            ['user__emails__address', 'equal', $user->getDefaultEmailAddress()],
            ['user_id', 'equal', $user->id],
        ];
        if ($S = $_GET['status'])
            // The actual state is tracked by the key
            $criteria[] = ['status__state', 'includes', [$S => $S]];
        $_SESSION['advsearch']['uid'] = $criteria;
        $queue_id = "adhoc,uid";
    }
    // Search for organization tickets
    elseif (isset($_GET['orgid'])
        && ($org = Organization::lookup($_GET['orgid']))
    ) {
        $criteria = [
            ['user__org__name', 'equal', $org->name],
            ['user__org_id', 'equal', $org->id],
        ];
        if ($S = $_GET['status'])
            $criteria[] = ['status__state', 'includes', [$S => $S]];
        $_SESSION['advsearch']['orgid'] = $criteria;
        $queue_id = "adhoc,orgid";
    }
    // Basic search (click on 🔍 )
    elseif (isset($_GET['a']) && $_GET['a'] === 'search'
        && ($_GET['query'])
    ) {
        $wc = mb_str_wc($_GET['query']);
        if ($wc < 4) {
            $key = substr(md5($_GET['query']), -10);
            if ($_GET['search-type'] == 'typeahead'
                    || Validator::is_emailish($_GET['query'])) {
                // Use a faster index
                $criteria = [
                    'user__emails__address',
                    Validator::is_valid_email($_GET['query']) ? 'equal' : 'contains',
                    $_GET['query']
                ];
            } elseif (Validator::is_numeric($_GET['query'])) {
                $criteria = ['number', 'contains', $_GET['query']];
            } else {
                $criteria = [':keywords', null, $_GET['query']];
            }
            $_SESSION['advsearch'][$key] = [$criteria];
            $queue_id = "adhoc,{$key}";
        } else {
            $errors['err'] = sprintf(
                    __('Search term cannot have more than %d keywords'), 4);
        }
    }

    $queue_key = sprintf('::Q:%s', ObjectModel::OBJECT_TYPE_TICKET);
    $queue_id = $queue_id ?: @$_GET['queue'] ?: $_SESSION[$queue_key]
        ?? $thisstaff->getDefaultTicketQueueId() ?: $cfg->getDefaultTicketQueueId();

    // Recover advanced search, if requested
    if (isset($_SESSION['advsearch'])
        && strpos($queue_id, 'adhoc') === 0
    ) {
        list(,$key) = explode(',', $queue_id, 2);
        // For queue=queue, use the most recent search
        if (!$key) {
            reset($_SESSION['advsearch']);
            $key = key($_SESSION['advsearch']);
        }

        $queue = AdhocSearch::load($key);
    }

    if ((int) $queue_id && !isset($queue))
        $queue = SavedQueue::lookup($queue_id);

    if (!$queue && ($qid=$cfg->getDefaultTicketQueueId()))
        $queue = SavedQueue::lookup($qid);

    if (!$queue && $queues)
        list($queue,) = $queues[0];

    if ($queue) {
        // Set the queue_id for navigation to turn a top-level item bold
        $_REQUEST['queue'] = $queue->getId();
        // Make the current queue sticky
         $_SESSION[$queue_key] = $queue->getId();
    }
}

// Configure form for file uploads
$response_form = new SimpleForm(array(
    'attachments' => new FileUploadField(array('id'=>'attach',
        'name'=>'attach:response',
        'configuration' => array('extensions'=>'')))
));
$note_form = new SimpleForm(array(
    'attachments' => new FileUploadField(array('id'=>'attach',
        'name'=>'attach:note',
        'configuration' => array('extensions'=>'')))
));

//At this stage we know the access status. we can process the post.
if($_POST && !$errors):

    if($ticket && $ticket->getId()) {
        //More coffee please.
        $errors=array();
        $lock = $ticket->getLock(); //Ticket lock if any
        $role = $ticket->getRole($thisstaff);
        $dept = $ticket->getDept();
        $isManager = $dept->isManager($thisstaff); //Check if Agent is Manager
        switch(strtolower($_POST['a'])):
        case 'reply':
            if (!$role || !$role->hasPerm(Ticket::PERM_REPLY)) {
                $errors['err'] = __('Action denied. Contact admin for access');
            } else {
                $vars = $_POST;
                $vars['files'] = $response_form->getField('attachments')->getFiles();
                $vars['response'] = ThreadEntryBody::clean($vars['response']);
                if(!$vars['response'])
                    $errors['response']=__('Response required');

                if ($cfg->isTicketLockEnabled()) {
                    if (!$lock) {
                        $errors['err'] = sprintf('%s %s', __('This action requires a lock.'), __('Please try again!'));
                    }
                    // Use locks to avoid double replies
                    elseif ($lock->getStaffId()!=$thisstaff->getId()) {
                        $errors['err'] = __('Action Denied. Ticket is locked by someone else!');
                    }
                    // Attempt to renew the lock if possible
                    elseif (($lock->isExpired() && !$lock->renew())
                        ||($lock->getCode() != $_POST['lockCode'])
                    ) {
                        $errors['err'] = sprintf('%s %s', __('Your lock has expired.'), __('Please try again!'));
                    }
                }

                //Make sure the email is not banned
                if(!$errors['err'] && Banlist::isBanned($ticket->getEmail()))
                    $errors['err']=__('Email is in banlist. Must be removed to reply.');
            }

            $alert =  strcasecmp('none', $_POST['reply-to']);
            if (!$errors) {
                // Add new collaborators (if any)
                $_errors = array();
                if (isset($vars['ccs']) && count($vars['ccs']))
                    $ticket->addCollaborators($vars['ccs'], array(), $_errors);
                // set status of collaborators
                if ($collabs = $ticket->getCollaborators()) {
                    foreach ($collabs as $collaborator) {
                        $cid = $collaborator->getUserId();
                        // Enable collaborators if they were reselected
                        if (!$collaborator->isActive() && ($vars['ccs'] && in_array($cid, $vars['ccs'])))
                            $collaborator->setFlag(Collaborator::FLAG_ACTIVE, true);
                        // Disable collaborators if they were unchecked
                        elseif ($collaborator->isActive() && (!$vars['ccs'] || !in_array($cid, $vars['ccs'])))
                            $collaborator->setFlag(Collaborator::FLAG_ACTIVE, false);
                        $collaborator->save();
                    }
                }
            }
            if (!$errors && ($response=$ticket->postReply($vars, $errors,
                            $alert))) {
                $msg = sprintf(__('%s: Reply posted successfully'),
                        sprintf(__('Ticket #%s'),
                            sprintf('<a href="tickets.php?id=%d"><b>%s</b></a>',
                                $ticket->getId(), $ticket->getNumber()))
                        );

                // Clear attachment list
                $response_form->setSource(array());
                $response_form->getField('attachments')->reset();

                // Remove staff's locks
                $ticket->releaseLock($thisstaff->getId());

                // Cleanup response draft for this user
                Draft::deleteForNamespace(
                    'ticket.response.' . $ticket->getId(),
                    $thisstaff->getId());

                if ($ticket->isClosed())
                    $ticket = null;

                $redirect = 'tickets.php';
                if ($ticket && $thisstaff->getReplyRedirect() == 'Ticket')
                    $redirect = 'tickets.php?id='.$ticket->getId();

            } elseif (!$errors['err']) {
                $errors['err']=sprintf('%s %s',
                    __('Unable to post the reply.'),
                    __('Correct any errors below and try again.'));
            }
            break;
        case 'postnote': /* Post Internal Note */
            $vars = $_POST;
            $vars['files'] = $note_form->getField('attachments')->getFiles();
            $vars['note'] = ThreadEntryBody::clean($vars['note']);

            if ($cfg->isTicketLockEnabled()) {
                if (!$lock) {
                    $errors['err'] = sprintf('%s %s', __('This action requires a lock.'), __('Please try again!'));
                }
                // Use locks to avoid double replies
                elseif ($lock->getStaffId()!=$thisstaff->getId()) {
                    $errors['err'] = __('Action Denied. Ticket is locked by someone else!');
                }
                elseif ($lock->getCode() != $_POST['lockCode']) {
                    $errors['err'] = sprintf('%s %s', __('Your lock has expired.'), __('Please try again!'));
                }
            }

            $wasOpen = ($ticket->isOpen());
            if(($note=$ticket->postNote($vars, $errors, $thisstaff))) {

                $msg = sprintf(__('%s: %s posted successfully'),
                        sprintf(__('Ticket #%s'),
                            sprintf('<a href="tickets.php?id=%d"><b>%s</b></a>',
                                $ticket->getId(), $ticket->getNumber())),
                        __('Internal note')
                        );
                // Clear attachment list
                $note_form->setSource(array());
                $note_form->getField('attachments')->reset();

                // Remove staff's locks
                $ticket->releaseLock($thisstaff->getId());

                if($wasOpen && $ticket->isClosed())
                    $ticket = null; //Going back to main listing.
                else
                    // Ticket is still open -- clear draft for the note
                    Draft::deleteForNamespace('ticket.note.'.$ticket->getId(),
                        $thisstaff->getId());

                 $redirect = 'tickets.php';
                 if ($ticket)
                     $redirect ='tickets.php?id='.$ticket->getId();

            } else {

                if(!$errors['err'])
                    $errors['err'] = __('Unable to post internal note - missing or invalid data.');

                $errors['postnote'] = sprintf('%s %s',
                    __('Unable to post the note.'),
                    __('Correct any errors below and try again.'));
            }
            break;
        case 'edit':
        case 'update':
            if(!$ticket || !$role->hasPerm(Ticket::PERM_EDIT))
                $errors['err']=__('Permission Denied. You are not allowed to edit tickets');
            elseif($ticket->update($_POST,$errors)) {
                $msg=__('Ticket updated successfully');
                $redirect = 'tickets.php?id='.$ticket->getId();
                $_REQUEST['a'] = null; //Clear edit action - going back to view.
                //Check to make sure the staff STILL has access post-update (e.g dept change).
                if(!$ticket->checkStaffPerm($thisstaff))
                    $ticket=null;
            } elseif(!$errors['err']) {
                $errors['err']=sprintf('%s %s',
                    sprintf(__('Unable to update %s.'), __('this ticket')),
                    __('Correct any errors below and try again.')
                );
            }
            break;
        case 'process':
            switch(strtolower($_POST['do'])):
                case 'claim':
                    if(!$role->hasPerm(Ticket::PERM_EDIT)) {
                        $errors['err'] = __('Permission Denied. You are not allowed to assign/claim tickets.');
                    } elseif(!$ticket->isOpen()) {
                        $errors['err'] = __('Only open tickets can be assigned');
                    } elseif($ticket->isAssigned()) {
                        $errors['err'] = sprintf(__('Ticket is already assigned to %s'),$ticket->getAssigned());
                    } elseif ($ticket->claim()) {
                        $msg = __('Ticket is now assigned to you!');
                    } else {
                        $errors['err'] = sprintf('%s %s', __('Problems assigning the ticket.'), __('Please try again!'));
                    }
                    break;
                case 'overdue':
                    if(!$dept || !$isManager) {
                        $errors['err']=__('Permission Denied. You are not allowed to flag tickets overdue');
                    } elseif($ticket->markOverdue()) {
                        $msg=sprintf(__('Ticket flagged as overdue by %s'),$thisstaff->getName());
                        $ticket->logActivity(__('Ticket Marked Overdue'),$msg);
                    } else {
                        $errors['err']=sprintf('%s %s', __('Problems marking the the ticket overdue.'), __('Please try again!'));
                    }
                    break;
                case 'banemail':
                    if (!$thisstaff->hasPerm(Email::PERM_BANLIST)) {
                        $errors['err']=__('Permission Denied. You are not allowed to ban emails');
                    } elseif(BanList::includes($ticket->getEmail())) {
                        $errors['err']=__('Email already in banlist');
                    } elseif(Banlist::add($ticket->getEmail(),$thisstaff->getName())) {
                        $msg=sprintf(__('Email %s added to banlist'),$ticket->getEmail());
                    } else {
                        $errors['err']=__('Unable to add the email to banlist');
                    }
                    break;
                case 'unbanemail':
                    if (!$thisstaff->hasPerm(Email::PERM_BANLIST)) {
                        $errors['err'] = __('Permission Denied. You are not allowed to remove emails from banlist.');
                    } elseif(Banlist::remove($ticket->getEmail())) {
                        $msg = __('Email removed from banlist');
                    } elseif(!BanList::includes($ticket->getEmail())) {
                        $warn = __('Email is not in the banlist');
                    } else {
                        $errors['err']=sprintf('%s %s', __('Unable to remove the email from banlist.'), __('Please try again!'));
                    }
                    break;
                case 'changeuser':
                    if (!$role->hasPerm(Ticket::PERM_EDIT)) {
                        $errors['err']=__('Permission Denied. You are not allowed to edit tickets');
                    } elseif (!$_POST['user_id'] || !($user=User::lookup($_POST['user_id']))) {
                        $errors['err'] = __('Unknown user selected');
                    } elseif ($ticket->changeOwner($user)) {
                        $msg = sprintf(__('Ticket ownership changed to %s'),
                            Format::htmlchars($user->getName()));
                    } else {
                        $errors['err'] = sprintf('%s %s', __('Unable to change ticket ownership.'), __('Please try again!'));
                    }
                    break;
                case 'addcc':
                    if (!$role->hasPerm(Ticket::PERM_EDIT)) {
                        $errors['err']=__('Permission Denied. You are not allowed to add collaborators');
                    } elseif (!$_POST['user_id'] || !($user=User::lookup($_POST['user_id']))) {
                        $errors['err'] = __('Unknown user selected');
                  } elseif ($c2 = $ticket->addCollaborator($user, array(), $errors)) {
                        $c2->setFlag(Collaborator::FLAG_CC, true);
                        $c2->save();
                        $msg = sprintf(__('Collaborator %s added'),
                            Format::htmlchars($user->getName()));
                    }
                    else {
                      $errors['err'] = sprintf('%s %s', __('Unable to add collaborator.'), __('Please try again!'));
                    }
                    break;
                default:
                    $errors['err']=__('You must select action to perform');
            endswitch;
            break;
        default:
            $errors['err']=__('Unknown action');
        endswitch;
    }elseif($_POST['a']) {

        switch($_POST['a']) {
            case 'open':
                $ticket=null;
                if (!$thisstaff ||
                        !$thisstaff->hasPerm(Ticket::PERM_CREATE, false)) {
                     $errors['err'] = sprintf('%s %s',
                             sprintf(__('You do not have permission %s'),
                                 __('to create tickets')),
                             __('Contact admin for such access'));
                } else {
                    $vars = $_POST;

                    if ($vars['uid'] && !($user=User::lookup($vars['uid'])))
                        $vars['uid'] = 0;

                    $vars['files'] = $response_form->getField('attachments')->getFiles();

                    if(($ticket=Ticket::open($vars, $errors))) {
                        $msg=__('Ticket created successfully');
                        $redirect = 'tickets.php?id='.$ticket->getId();
                        $_REQUEST['a']=null;
                        if (!$ticket->checkStaffPerm($thisstaff) || $ticket->isClosed())
                            $ticket=null;
                        Draft::deleteForNamespace('ticket.staff%', $thisstaff->getId());
                        // Drop files from the response attachments widget
                        $response_form->setSource(array());
                        $response_form->getField('attachments')->reset();
                        $_SESSION[':form-data'] = null;
                        // Regenerate Session ID
                        $thisstaff->regenerateSession();
                    } elseif(!$errors['err']) {
                        // ensure that we retain the tid if ticket is created from thread
                        if ($_SESSION[':form-data']['ticketId'] || $_SESSION[':form-data']['taskId'])
                            $_GET['tid'] = $_SESSION[':form-data']['ticketId'] ?: $_SESSION[':form-data']['taskId'];

                        $errors['err']=sprintf('%s %s',
                            __('Unable to create the ticket.'),
                            __('Correct any errors below and try again.'));
                    }
                }
                break;
        }
    }
    if(!$errors)
        $thisstaff ->resetStats(); //We'll need to reflect any changes just made!
endif;

if ($redirect) {
    if ($msg)
        Messages::success($msg);
    Http::redirect($redirect);
}

// Clear advanced search upon request
if (isset($_GET['clear_filter']))
    unset($_SESSION['advsearch']);

//Navigation
$nav->setTabActive('tickets');
$nav->addSubNavInfo('jb-overflowmenu', 'customQ_nav');

// Start with all the top-level (container) queues
foreach ($queues as $_) {
    list($q, $children) = $_;
    if ($q->isPrivate())
        continue;
    $nav->addSubMenu(function() use ($q, $queue, $children) {
        // A queue is selected if it is the one being displayed. It is
        // "child" selected if its ID is in the path of the one selected
        $_selected = ($queue && $queue->getId() == $q->getId());
        $child_selected = $queue
            && ($queue->parent_id == $q->getId()
                || false !== strpos($queue->getPath(), "/{$q->getId()}/"));
        include STAFFINC_DIR . 'templates/queue-navigation.tmpl.php';

        return ($child_selected || $_selected);
    });
}

// Add my advanced searches
$nav->addSubMenu(function() use ($queue) {
    global $thisstaff;
    $selected = false;
    // A queue is selected if it is the one being displayed. It is
    // "child" selected if its ID is in the path of the one selected
    $child_selected = $queue instanceof SavedSearch;
    include STAFFINC_DIR . 'templates/queue-savedsearches-nav.tmpl.php';
    return ($child_selected || $selected);
});


if ($thisstaff->hasPerm(Ticket::PERM_CREATE, false)) {
    $nav->addSubMenu(array('desc'=>__('New Ticket'),
                           'title'=> __('Open a New Ticket'),
                           'href'=>'tickets.php?a=open',
                           'iconclass'=>'newTicket',
                           'id' => 'new-ticket'),
                        (isset($_REQUEST['a']) && $_REQUEST['a']=='open'));
}


$ost->addExtraHeader('<script type="text/javascript" src="js/ticket.js?0375576"></script>');
$ost->addExtraHeader('<script type="text/javascript" src="js/thread.js?0375576"></script>');
$ost->addExtraHeader('<meta name="tip-namespace" content="tickets.queue" />',
    "$('#content').data('tipNamespace', 'tickets.queue');");

if($ticket) {
    $ost->setPageTitle(sprintf(__('Ticket #%s'),$ticket->getNumber()));
    $nav->setActiveSubMenu(-1);
    $inc = 'ticket-view.inc.php';
    if ($_REQUEST['a']=='edit'
            && $ticket->checkStaffPerm($thisstaff, Ticket::PERM_EDIT)) {
        $inc = 'ticket-edit.inc.php';
        if (!$forms) $forms=DynamicFormEntry::forTicket($ticket->getId());
        // Auto add new fields to the entries
        foreach ($forms as $f) {
            $f->filterFields(function($f) { return !$f->isStorable(); });
            $f->addMissingFields();
        }
    } elseif($_REQUEST['a'] == 'print') {
        if (!extension_loaded('mbstring'))
            $errors['err'] = sprintf('%s %s',
                'mbstring',
                __('extension required to print ticket to PDF'));
        elseif (!$ticket->pdfExport($_REQUEST['psize'], $_REQUEST['notes'], $_REQUEST['events']))
            $errors['err'] = __('Unable to export the ticket to PDF for print.')
                .' '.__('Internal error occurred');
    } elseif ($_GET['a'] == 'zip' && !$ticket->zipExport($_REQUEST['notes'], $_REQUEST['tasks'])) {
        $errors['err'] = __('Unable to export the ticket to ZIP.')
            .' '.__('Internal error occurred');
    } elseif (PluginManager::auditPlugin() && $_REQUEST['a'] == 'export' && strtolower($_REQUEST['t']) == 'audits') {
      require_once(sprintf('phar:///%s/plugins/audit.phar/class.audit.php', INCLUDE_DIR));
      $show = AuditEntry::$show_view_audits;
      $filename = sprintf('%s-audits-%s.csv',
              $ticket->getNumber(), date('Ymd'));
      $tableInfo = AuditEntry::getTableInfo($ticket, true);
      if (!Export::audits('ticket', $filename, $tableInfo, $ticket, 'csv', $show))
          $errors['err'] = __('Unable to dump query results.')
              .' '.__('Internal error occurred');
    }
} else {
    $inc = 'templates/queue-tickets.tmpl.php';
    if ((isset($_REQUEST['a']) && $_REQUEST['a']=='open') &&
            $thisstaff->hasPerm(Ticket::PERM_CREATE, false)) {
        $inc = 'ticket-open.inc.php';
    } elseif ($queue) {
        // XXX: Check staff access?
        $quick_filter = @$_REQUEST['filter'];
        $tickets = $queue->getQuery(false, $quick_filter);
    }

    //set refresh rate if the user has it configured
    if(!$_POST && !isset($_REQUEST['a']) && ($min=(int)$thisstaff->getRefreshRate())) {
        $js = "+function(){ var qq = setInterval(function() { if ($.refreshTicketView === undefined) return; clearInterval(qq); $.refreshTicketView({$min}*60000); }, 200); }();";
        $ost->addExtraHeader('<script type="text/javascript">'.$js.'</script>',
            $js);
    }
}

require_once(STAFFINC_DIR.'header.inc.php');
require_once(STAFFINC_DIR.$inc);
print $response_form->getMedia();
require_once(STAFFINC_DIR.'footer.inc.php');

ticket.js:
/*********************************************************************
    ticket.js

    Ticket utility loaded on ticket view!

    Useful for UI config settings, ticket locking ...etc

    Peter Rotich <peter@osticket.com>
    Copyright (c) 2006-2013 osTicket
    http://www.osticket.com

    Released under the GNU General Public License WITHOUT ANY WARRANTY.

    vim: expandtab sw=4 ts=4 sts=4:
**********************************************************************/
+function( $ ) {
  var Lock = function(element, options) {
    this.$element = $(element);
    this.options = $.extend({}, $.fn.exclusive.defaults, options);
    if (!this.$element.data('lockObjectId'))
      return;
    this.objectId = this.$element.data('lockObjectId');
    this.fails = 0;
    this.disabled = false;
    getConfig().then(function(c) {
      if (c.lock_time)
        this.setup(options.lockId || this.$element.data('lockId') || undefined);
    }.bind(this));
  }

  Lock.prototype = {
    constructor: Lock,
    registry: [],

    setup: function(lockId) {
      // When something inside changes or is clicked which requires a lock,
      // attempt to fetch one (lazily)
      $(':input', this.$element).on('keyup, change', this.acquire.bind(this));
      $(':submit', this.$element).click(this.ensureLocked.bind(this));

      // If lock already held, assume full time of lock remains, but warn
      // user about pending expiration
      if (lockId) {
        getConfig().then(function(c) {
          this.update({id: lockId, time: c.lock_time - 10});
        }.bind(this));
      }
    },

    acquire: function() {
      if (this.lockId)
        return this.renew();
      if (this.nextRenew && new Date().getTime() < this.nextRenew)
        return this.locked;
      if (this.disabled || this.ajaxActive)
        return this.locked;

      this.ajaxActive = $.ajax({
        type: "POST",
        url: 'ajax.php/lock/'+this.objectId,
        dataType: 'json',
        cache: false,
        success: $.proxy(this.update, this),
        error: $.proxy(this.retry, this, this.acquire),
        complete: $.proxy(function() { this.ajaxActive = false; }, this)
      });
      return this.locked = $.Deferred();
    },

    renew: function() {
      if (!this.lockId)
        return;
      if (this.nextRenew && new Date().getTime() < this.nextRenew)
        return this.locked;
      if (this.disabled || this.ajaxActive)
        return this.locked;

      this.ajaxActive = $.ajax({
        type: "POST",
        url: 'ajax.php/lock/{0}/{1}/renew'.replace('{0}',this.lockId).replace('{1}',this.objectId),
        dataType: 'json',
        cache: false,
        success: $.proxy(this.update, this),
        error: $.proxy(this.retry, this, this.renew),
        complete: $.proxy(function() { this.ajaxActive = false; }, this)
      });
      return this.locked = $.Deferred();
    },

    wakeup: function(e) {
      // Click handler from message bar. Bar will be manually hidden when
      // lock is re-acquired
      this.renew();
      return false;
    },

    retry: function(func, xhr, textStatus, response) {
      var json = xhr ? xhr.responseJSON : response;

      if (xhr.status == 418) {
          this.disabled = true;
          return this.destroy();
      }

      if ((typeof json == 'object' && !json.retry) || !this.options.retry)
        return this.fail(json.msg);
      if (typeof json == 'object' && json.retry == 'acquire') {
        // Lock no longer exists server-side
        this.destroy();
        setTimeout(this.acquire.bind(this), 2);
      }
      if (++this.fails > this.options.maxRetries)
        // Attempt to acquire a new lock ?
        return this.fail(json ? json.msg : null);
      this.retryTimer = setTimeout($.proxy(func, this), this.options.retryInterval * 1000);
    },

    release: function() {
      if (!this.lockId)
        return false;
      if (this.ajaxActive)
        this.ajaxActive.abort();

      $.ajax({
        type: 'POST',
        url: 'ajax.php/lock/{0}/release'.replace('{0}', this.lockId),
        data: 'delete',
        cache: false,
        success: this.clearAll.bind(this),
        complete: this.destroy.bind(this)
      });
    },

    clearAll: function() {
      // Clear all other current locks with the same ID as this
      $.each(Lock.prototype.registry, function(i, l) {
        if (l.lockId && l.lockId == this.lockId)
          l.shutdown();
      }.bind(this));
    },

    shutdown: function() {
      clearTimeout(this.warning);
      clearTimeout(this.retryTimer);
      $(document).off('.exclusive');
    },

    destroy: function() {
      this.shutdown();
      delete this.lockId;
      $(this.options.lockInput, this.$element).val('');
      if (this.locked)
        this.locked.reject();
    },

    update: function(lock) {
      if (typeof lock != 'object' || lock.retry === true) {
        // Non-json response, or retry requested server-side
        return this.retry(this.renew, this.ajaxActive, false, lock);
      }
      if (!lock.id) {
        // Response did not include a lock id number
        return this.fail(lock.msg);
      }
      if (!this.lockId) {
        // Set up release on away navigation
        $(document).off('.exclusive');
        $(document).on('pjax:click.exclusive', $.proxy(this.release, this));
        Lock.prototype.registry.push(this);
      }

      this.lockId = lock.id;
      this.fails = 0;
      $.messageBar.hide();
      this.errorBar = false;

      // If there is an input with the name 'lockCode', then set the value
      // to the lock.code retrieved (if any)
      if (lock.code)
        $(this.options.lockInput, this.$element).val(lock.code);

      // Deadband renew to every 30 seconds
      this.nextRenew = new Date().getTime() + 30000;

      // Warn 10 seconds before expiration
      this.lockTimeout(lock.time - 10);

      if (this.locked)
        this.locked.resolve(lock);
    },

    lockTimeout: function(time) {
      if (this.warning)
        clearTimeout(this.warning);
      this.warning = setTimeout(this.warn.bind(this), time * 1000);
    },

    ensureLocked: function(e) {
      // Make sure a lock code has been fetched first
      if (!$(this.options.lockInput, this.$element).val()) {
        var $target = $(e.target),
            text = $target.text() || $target.val();
        $target.prop('disabled', true).text(__('Acquiring Lock')).val(__('Acquiring Lock'));
        this.acquire().always(function(lock) {
          $target.text(text).val(text).prop('disabled', false);
          if (typeof lock == 'object' && lock.code)
            $target.trigger(e.type, e);
        }.bind(this));
        return false;
      }
    },

    warn: function() {
      $.messageBar.show(
        __('Your lock is expiring soon.'),
        __('The lock you hold on this ticket will expire soon. Would you like to renew the lock?'),
        {onok: this.wakeup.bind(this), buttonText: __("Renew")}
      ).addClass('warning');
    },

    fail: function(msg) {
      // Don't retry for 5 seconds
      this.nextRenew = new Date().getTime() + 5000;
      // Resolve anything awaiting
      if (this.locked)
        this.locked.rejectWith(msg);
      // No longer locked
      this.destroy();
      // Flash the error bar if it's already on the screen
      if (this.errorBar && $.messageBar.visible)
          return this.errorBar.effect('highlight');
      // Add the error bar to the screen
      this.errorBar = $.messageBar.show(
        msg || __('Unable to lock the ticket.'),
        __('Someone else could be working on the same ticket.'),
        {avatar: 'oscar-borg', buttonClass: 'red', dismissible: true}
      ).addClass('danger');
    }
  };

  $.fn.exclusive = function ( option ) {
    return this.each(function () {
      var $this = $(this),
        data = $this.data('exclusive'),
        options = typeof option == 'object' && option;
      if (!data) $this.data('exclusive', (data = new Lock(this, options)));
      if (typeof option == 'string') data[option]();
    });
  };

  $.fn.exclusive.defaults = {
    lockInput: 'input[name=lockCode]',
    maxRetries: 2,
    retry: true,
    retryInterval: 2
  };

  $.fn.exclusive.Constructor = Lock;

}(window.jQuery);

/*
   UI & form events
*/
$.showImagesInline = function(urls, thread_id) {
    var selector = (thread_id == undefined)
        ? '.thread-body img[data-cid]'
        : '.thread-body#thread-entry-'+thread_id+' img[data-cid]';
    $(selector).each(function(i, el) {
        var e = $(el),
            cid = e.data('cid').toLowerCase(),
            info = urls[cid];
        if (info && !e.data('wrapped')) {
            // Add a hover effect with the filename
            var timeout, caption = $('<div class="image-hover">')
                .css({'float':e.css('float')});
            e.wrap(caption).parent()
                .hover(
                    function() {
                        var self = this;
                        timeout = setTimeout(
                            function() { $(self).find('.caption').slideDown(250); },
                            500);
                    },
                    function() {
                        clearTimeout(timeout);
                        $(this).find('.caption').slideUp(250);
                    }
                ).append($('<div class="caption">')
                    .append('<span class="filename">'+info.filename+'</span>')
                    .append($('<a href="'+info.download_url+'" class="action-button pull-right no-pjax"><i class="icon-download-alt"></i> '+__('Download')+'</a>')
                      .attr('download', info.filename)
                    )
                );
            e.data('wrapped', true);
        }
    });
};

$.refreshTicketView = function(interval) {
    var refresh = setInterval(function() {
      if ($('table.list input.ckb[name=tids\\[\\]]:checked').length)
        // Skip the refresh b/c items are checked
        return;
      else if (0 < $('.dialog:visible').length)
        // Dialog open — skip refresh
        return;

      clearInterval(refresh);
      $.pjax({url: document.location.href, container:'#pjax-container', timeout: 30000});
    }, interval);
    $(document).on('pjax:start', function() {
        clearInterval(refresh);
    });
};

var ticket_onload = function($) {
    if (0 === $('#ticketThread').length)
        return;

    $(function(){$('.exclusive[data-lock-object-id]').exclusive();});

    /*** Ticket Actions **/
    //print options TODO: move to backend
    $('a#ticket-print').click(function(e) {
        e.preventDefault();
        $('#overlay').show();
        $('.dialog#print-options').show();
        return false;
    });


    $(document).off('.ticket-action');
    $(document).on('click.ticket-action', 'a.ticket-action', function(e) {
        e.preventDefault();
        var url = 'ajax.php/'
        +$(this).attr('href').substr(1)
        +'?_uid='+new Date().getTime();
        var $redirect = $(this).data('redirect');
        var $options = $(this).data('dialog');
        $.dialog(url, [201], function (xhr) {
            if (!!$redirect)
                window.location.href = $redirect;
            else
                $.pjax.reload('#pjax-container');
        }, $options);

        return false;
    });

    $(document).on('change', 'form[name=reply] select#emailreply', function(e) {
         var $cc = $('form[name=reply] tbody#cc_sec');
        if($(this).val() == 0)
            $cc.hide();
        else
            $cc.show();
     });

};
$(ticket_onload);
$(document).on('pjax:success', function() { ticket_onload(jQuery); });

If you need to be provided with any other files please let me know!.