diff --git a/CMakeLists.txt b/CMakeLists.txt
index 6b575972d..a8d416f88 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,413 +1,417 @@
 cmake_minimum_required(VERSION 3.0)
 
 # KDE Application Version, managed by release script
 set (KDE_APPLICATIONS_VERSION_MAJOR "18")
 set (KDE_APPLICATIONS_VERSION_MINOR "03")
 set (KDE_APPLICATIONS_VERSION_MICRO "70")
 set (KDE_APPLICATIONS_VERSION "${KDE_APPLICATIONS_VERSION_MAJOR}.${KDE_APPLICATIONS_VERSION_MINOR}.${KDE_APPLICATIONS_VERSION_MICRO}")
 
 project(okular VERSION 1.3.${KDE_APPLICATIONS_VERSION_MICRO})
 
 set(QT_REQUIRED_VERSION "5.8.0")
 set(KF5_REQUIRED_VERSION "5.33.0")
 
 find_package(ECM 5.33.0 CONFIG REQUIRED)
 set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} ${ECM_MODULE_PATH})
 
 include(ECMInstallIcons)
 include(ECMSetupVersion)
 include(ECMOptionalAddSubdirectory)
 include(GenerateExportHeader)
 include(FeatureSummary)
 include(ECMAddAppIcon)
 include(KDECompilerSettings NO_POLICY_SCOPE)
 include(KDEInstallDirs)
 include(KDECMakeSettings)
 include(ECMAddTests)
 include(ECMAddAppIcon)
 include(CMakePackageConfigHelpers)
 
 ecm_setup_version(${PROJECT_VERSION}
                   VARIABLE_PREFIX OKULAR
                   VERSION_HEADER "${CMAKE_CURRENT_BINARY_DIR}/core/version.h"
                   PACKAGE_VERSION_FILE "${CMAKE_CURRENT_BINARY_DIR}/Okular5ConfigVersion.cmake")
 
 find_package(Qt5 ${QT_REQUIRED_VERSION} CONFIG REQUIRED COMPONENTS Core DBus Test Widgets PrintSupport Svg Qml Quick)
 find_package(Qt5 ${QT_REQUIRED_VERSION} OPTIONAL_COMPONENTS TextToSpeech)
 if (NOT Qt5TextToSpeech_FOUND)
     message(STATUS "Qt5TextToSpeech not found, speech features will be disabled")
 else()
     add_definitions(-DHAVE_SPEECH)
 endif()
 
 if(NOT CMAKE_VERSION VERSION_LESS "3.10.0")
   # CMake 3.9+ warns about automoc on files without Q_OBJECT, and doesn't know about other macros.
   # 3.10+ lets us provide more macro names that require automoc.
   list(APPEND CMAKE_AUTOMOC_MACRO_NAMES "OKULAR_EXPORT_PLUGIN")
 endif()
 
 find_package(KF5 ${KF5_REQUIRED_VERSION} REQUIRED COMPONENTS
     Archive
     Bookmarks
     Completion
     Config
     ConfigWidgets
     CoreAddons
     DocTools
     IconThemes
     JS
     KIO
     Parts
     ThreadWeaver
     Wallet
     WindowSystem
 )
 if(NOT WIN32)
     find_package(KF5 ${KF5_REQUIRED_VERSION} REQUIRED COMPONENTS
         Activities
     )
 endif()
 find_package(KF5Kirigami2)
 set_package_properties(KF5Kirigami2 PROPERTIES
     DESCRIPTION "A QtQuick based components set"
     PURPOSE "Required at runtime by the mobile app"
     TYPE RUNTIME
 )
 find_package(Phonon4Qt5 CONFIG REQUIRED)
 find_package(KDEExperimentalPurpose)
 set_package_properties(KDEExperimentalPurpose PROPERTIES
     DESCRIPTION "A framework for services and actions integration"
     PURPOSE "Required for enabling the share menu in Okular"
     TYPE OPTIONAL
 )
 if (KDEExperimentalPurpose_FOUND)
     set(PURPOSE_FOUND 1)
 else()
     set(PURPOSE_FOUND 0)
 endif()
 
 set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} ${CMAKE_SOURCE_DIR}/cmake/modules)
 
 find_package(ZLIB REQUIRED)
 
 add_definitions(-DQT_USE_FAST_CONCATENATION -DQT_USE_FAST_OPERATOR_PLUS)
 add_definitions(-DTRANSLATION_DOMAIN="okular")
 add_definitions(-DQT_NO_URL_CAST_FROM_STRING)
 
 include_directories(${CMAKE_CURRENT_SOURCE_DIR} ${PHONON_INCLUDES} core/synctex ${ZLIB_INCLUDE_DIR} ${CMAKE_BINARY_DIR}/core)
 
 add_subdirectory( mobile )
 option(BUILD_COVERAGE "Build the project with gcov support" OFF)
 
 if (CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
     if (NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS "5.0.0")
         set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wsuggest-override" )
     endif()
 endif()
 
 if(BUILD_COVERAGE)
     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fprofile-arcs -ftest-coverage")
     set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -lgcov")
 endif()
 
 add_subdirectory( ui )
 add_subdirectory( shell )
 add_subdirectory( generators )
 add_subdirectory( autotests )
 add_subdirectory( conf/autotests )
 
 add_subdirectory(doc)
 
 include(OkularConfigureChecks.cmake)
 
 if(NOT WIN32)
  set(MATH_LIB m)
 else(NOT WIN32)
  set(MATH_LIB)
 endif(NOT WIN32)
 
 # okularcore
 
 set(okularcore_SRCS
    core/action.cpp
    core/annotations.cpp
    core/area.cpp
    core/audioplayer.cpp
    core/bookmarkmanager.cpp
    core/chooseenginedialog.cpp
    core/document.cpp
    core/documentcommands.cpp
    core/fontinfo.cpp
    core/form.cpp
    core/generator.cpp
    core/generator_p.cpp
    core/misc.cpp
    core/movie.cpp
    core/observer.cpp
    core/debug.cpp
    core/page.cpp
    core/pagecontroller.cpp
    core/pagesize.cpp
    core/pagetransition.cpp
    core/rotationjob.cpp
    core/scripter.cpp
    core/sound.cpp
    core/sourcereference.cpp
    core/textdocumentgenerator.cpp
    core/textdocumentsettings.cpp
    core/textpage.cpp
    core/tilesmanager.cpp
    core/utils.cpp
    core/view.cpp
    core/fileprinter.cpp
    core/script/event.cpp
    core/script/executor_kjs.cpp
    core/script/kjs_app.cpp
    core/script/kjs_console.cpp
    core/script/kjs_data.cpp
    core/script/kjs_document.cpp
    core/script/kjs_event.cpp
    core/script/kjs_fullscreen.cpp
    core/script/kjs_field.cpp
    core/script/kjs_spell.cpp
    core/script/kjs_util.cpp
    core/synctex/synctex_parser.c
    core/synctex/synctex_parser_utils.c
 )
 
+qt5_add_resources(okularcore_SRCS
+   core/script/builtin.qrc
+)
+
 ki18n_wrap_ui(okularcore_SRCS
    conf/textdocumentsettings.ui
 )
 
 install( FILES
            core/action.h
            core/annotations.h
            core/area.h
            core/document.h
            core/fontinfo.h
            core/form.h
            core/generator.h
            core/global.h
            core/page.h
            core/pagesize.h
            core/pagetransition.h
            core/sound.h
            core/sourcereference.h
            core/textdocumentgenerator.h
            core/textdocumentsettings.h
            core/textpage.h
            core/tile.h
            core/utils.h
            core/fileprinter.h
            core/observer.h
            ${CMAKE_CURRENT_BINARY_DIR}/core/version.h
            ${CMAKE_CURRENT_BINARY_DIR}/core/okularcore_export.h
            ${CMAKE_CURRENT_BINARY_DIR}/settings_core.h
          DESTINATION ${KDE_INSTALL_INCLUDEDIR}/okular/core COMPONENT Devel)
 
 install( FILES
            interfaces/configinterface.h
            interfaces/guiinterface.h
            interfaces/printinterface.h
            interfaces/saveinterface.h
            interfaces/viewerinterface.h
          DESTINATION ${KDE_INSTALL_INCLUDEDIR}/okular/interfaces COMPONENT Devel)
 
 ki18n_wrap_ui(okularcore_SRCS
    core/chooseenginewidget.ui
 )
 
 kconfig_add_kcfg_files(okularcore_SRCS conf/settings_core.kcfgc)
 
 add_library(okularcore SHARED ${okularcore_SRCS})
 generate_export_header(okularcore BASE_NAME okularcore EXPORT_FILE_NAME "${CMAKE_CURRENT_BINARY_DIR}/core/okularcore_export.h")
 
 # Special handling for linking okularcore on OSX/Apple
 IF(APPLE)
     SET(OKULAR_IOKIT "-framework IOKit" CACHE STRING "Apple IOKit framework")
 ENDIF(APPLE)
 
 # Extra library needed by imported synctex code on Windows
 if(WIN32)
     set(SHLWAPI shlwapi)
 endif(WIN32)
 
 target_link_libraries(okularcore
 PRIVATE
     ${OKULAR_IOKIT}
     ${SHLWAPI}
     KF5::Archive
     KF5::JS
     KF5::JSApi
     KF5::KIOCore
     KF5::KIOWidgets
     KF5::I18n
     KF5::ThreadWeaver
     KF5::Wallet
     KF5::Bookmarks
     Phonon::phonon4qt5
     ${MATH_LIB}
     ${ZLIB_LIBRARIES}
 PUBLIC  # these are included from the installed headers
     KF5::CoreAddons
     KF5::XmlGui
     KF5::ConfigGui
     Qt5::PrintSupport
     Qt5::Widgets
 )
 
 set_target_properties(okularcore PROPERTIES VERSION 8.0.0 SOVERSION 8 OUTPUT_NAME Okular5Core EXPORT_NAME Core)
 
 install(TARGETS okularcore EXPORT Okular5Targets ${KDE_INSTALL_TARGETS_DEFAULT_ARGS})
 
 install(FILES conf/okular.kcfg DESTINATION ${KDE_INSTALL_KCFGDIR})
 install(FILES conf/okular_core.kcfg DESTINATION ${KDE_INSTALL_KCFGDIR})
 install(FILES core/okularGenerator.desktop DESTINATION ${KDE_INSTALL_KSERVICETYPES5DIR})
 
 # okularpart
 
 set(okularpart_conf_SRCS
    conf/preferencesdialog.cpp
    conf/dlgaccessibility.cpp
    conf/dlgdebug.cpp
    conf/dlgeditor.cpp
    conf/dlggeneral.cpp
    conf/dlgannotations.cpp
    conf/dlgperformance.cpp
    conf/dlgpresentation.cpp
    conf/editannottooldialog.cpp
    conf/editdrawingtooldialog.cpp
    conf/widgetannottools.cpp
    conf/widgetconfigurationtoolsbase.cpp
    conf/widgetdrawingtools.cpp
 )
 
 set(okularpart_SRCS
    ${okularpart_conf_SRCS}
    part.cpp
    extensions.cpp
    ui/embeddedfilesdialog.cpp
    ui/annotwindow.cpp
    ui/annotationmodel.cpp
    ui/annotationpopup.cpp
    ui/annotationpropertiesdialog.cpp
    ui/annotationproxymodels.cpp
    ui/annotationtools.cpp
    ui/annotationwidgets.cpp
    ui/bookmarklist.cpp
    ui/debug_ui.cpp
    ui/drawingtoolactions.cpp
    ui/fileprinterpreview.cpp
    ui/findbar.cpp
    ui/formwidgets.cpp
    ui/guiutils.cpp
    ui/ktreeviewsearchline.cpp
    ui/latexrenderer.cpp
    ui/minibar.cpp
    ui/okmenutitle.cpp
    ui/pageitemdelegate.cpp
    ui/pagepainter.cpp
    ui/pagesizelabel.cpp
    ui/pageviewannotator.cpp
    ui/pageviewmouseannotation.cpp
    ui/pageview.cpp
    ui/magnifierview.cpp
    ui/pageviewutils.cpp
    ui/presentationsearchbar.cpp
    ui/presentationwidget.cpp
    ui/propertiesdialog.cpp
    ui/searchlineedit.cpp
    ui/searchwidget.cpp
    ui/sidebar.cpp
    ui/side_reviews.cpp
    ui/snapshottaker.cpp
    ui/thumbnaillist.cpp
    ui/toc.cpp
    ui/tocmodel.cpp
    ui/toolaction.cpp
    ui/videowidget.cpp
    ui/layers.cpp
 )
 
 if (Qt5TextToSpeech_FOUND)
    set(okularpart_SRCS ${okularpart_SRCS}
       ui/tts.cpp)
 endif()
 
 ki18n_wrap_ui(okularpart_SRCS
    conf/dlgaccessibilitybase.ui
    conf/dlgeditorbase.ui
    conf/dlggeneralbase.ui
    conf/dlgannotationsbase.ui
    conf/dlgperformancebase.ui
    conf/dlgpresentationbase.ui
 )
 
 kconfig_add_kcfg_files(okularpart_SRCS conf/settings.kcfgc)
 
 add_library(okularpart SHARED ${okularpart_SRCS})
 generate_export_header(okularpart BASE_NAME okularpart)
 
 target_link_libraries(okularpart okularcore
     ${MATH_LIB}
     Qt5::Svg
     Phonon::phonon4qt5
     KF5::Archive
     KF5::Bookmarks
     KF5::I18n
     KF5::IconThemes
     KF5::ItemViews
     KF5::KIOCore
     KF5::KIOFileWidgets
     KF5::KIOWidgets
     KF5::KIONTLM
     KF5::Parts
     KF5::Solid
     KF5::Wallet
     KF5::WindowSystem
 )
 
 if (KDEExperimentalPurpose_FOUND)
     target_link_libraries(okularpart KDEExperimental::PurposeWidgets)
 endif()
 
 set_target_properties(okularpart PROPERTIES PREFIX "")
 
 if (Qt5TextToSpeech_FOUND)
    target_link_libraries(okularpart Qt5::TextToSpeech)
 endif()
 install(TARGETS okularpart DESTINATION ${KDE_INSTALL_PLUGINDIR})
 
 
 ########### install files ###############
 
 install(FILES okular.upd DESTINATION ${KDE_INSTALL_DATADIR}/kconf_update)
 
 install( FILES okular_part.desktop  DESTINATION  ${KDE_INSTALL_KSERVICES5DIR} )
 install( FILES part.rc part-viewermode.rc DESTINATION ${KDE_INSTALL_KXMLGUI5DIR}/okular )
 
 install( FILES okular.categories DESTINATION ${KDE_INSTALL_CONFDIR} )
 
 ########### cmake files #################
 
 set(CMAKECONFIG_INSTALL_DIR "${KDE_INSTALL_CMAKEPACKAGEDIR}/Okular5")
 configure_package_config_file(
   "${CMAKE_CURRENT_SOURCE_DIR}/Okular5Config.cmake.in"
   "${CMAKE_CURRENT_BINARY_DIR}/Okular5Config.cmake"
   INSTALL_DESTINATION  ${CMAKECONFIG_INSTALL_DIR}
   PATH_VARS  INCLUDE_INSTALL_DIR CMAKE_INSTALL_PREFIX
 )
 
 install(FILES
   "${CMAKE_CURRENT_BINARY_DIR}/Okular5Config.cmake"
   "${CMAKE_CURRENT_BINARY_DIR}/Okular5ConfigVersion.cmake"
   DESTINATION "${CMAKECONFIG_INSTALL_DIR}"
   COMPONENT Devel
 )
 
 install(EXPORT Okular5Targets DESTINATION "${CMAKECONFIG_INSTALL_DIR}" FILE Okular5Targets.cmake NAMESPACE Okular::)
 
 ########### summary #################
 
 feature_summary(WHAT ALL FATAL_ON_MISSING_REQUIRED_PACKAGES)
 
diff --git a/core/script/builtin.js b/core/script/builtin.js
new file mode 100644
index 000000000..2090c942d
--- /dev/null
+++ b/core/script/builtin.js
@@ -0,0 +1,62 @@
+/***************************************************************************
+ *   Copyright (C) 2018        Intevation GmbH <intevation@intevation.de>  *
+ *                                                                         *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU General Public License as published by  *
+ *   the Free Software Foundation; either version 2 of the License, or     *
+ *   (at your option) any later version.                                   *
+ ***************************************************************************/
+
+/* Builtin functions for Okular's PDF JavaScript interpretation. */
+
+/** AFSimple_Calculate
+ *
+ * cFunction is a string that identifies the operation.
+ *           It is one of AVG, SUM, PRD, MIN, MAX
+ * cFields is an array of the names of the fields used to calculate.
+ */
+function AFSimple_Calculate( cFunction, cFields )
+{
+    var ret = 0;
+
+    if ( cFunction === "PRD" )
+    {
+        ret = 1;
+    }
+
+    for (i = 0; i < cFields.length; i++)
+    {
+        var field = Doc.getField( cFields[i] );
+        var val = Number( field.value );
+
+        if ( cFunction === "SUM" || cFunction === "AVG" )
+        {
+            ret += val;
+        }
+        else if ( cFunction === "PRD" )
+        {
+            ret *= val;
+        }
+        else if ( cFunction === "MIN" )
+        {
+            if ( i === 0 || val < ret )
+            {
+                ret = val;
+            }
+        }
+        else if ( cFunction === "MAX" )
+        {
+            if ( i === 0 || val > ret )
+            {
+                ret = val;
+            }
+        }
+    }
+
+    if ( cFunction === "AVG" )
+    {
+        ret /= cFields.length;
+    }
+
+    event.value = ret;
+}
diff --git a/core/script/builtin.qrc b/core/script/builtin.qrc
new file mode 100644
index 000000000..9c83d4f61
--- /dev/null
+++ b/core/script/builtin.qrc
@@ -0,0 +1,5 @@
+<!DOCTYPE RCC><RCC version="1.0">
+<qresource prefix="/script">
+    <file>builtin.js</file>
+</qresource>
+</RCC>
diff --git a/core/scripter.cpp b/core/scripter.cpp
index 15af8766e..431dff433 100644
--- a/core/scripter.cpp
+++ b/core/scripter.cpp
@@ -1,77 +1,93 @@
 /***************************************************************************
  *   Copyright (C) 2008 by Pino Toscano <pino@kde.org>                     *
  *                                                                         *
  *   This program is free software; you can redistribute it and/or modify  *
  *   it under the terms of the GNU General Public License as published by  *
  *   the Free Software Foundation; either version 2 of the License, or     *
  *   (at your option) any later version.                                   *
  ***************************************************************************/
 
 #include "scripter.h"
 
 #include <QtCore/QDebug>
+#include <QFile>
 
 #include "debug_p.h"
 #include "script/executor_kjs_p.h"
 
 using namespace Okular;
 
 class Okular::ScripterPrivate
 {
     public:
         ScripterPrivate( DocumentPrivate *doc )
             : m_doc( doc ), m_kjs( nullptr ), m_event( nullptr )
         {
         }
 
         ~ScripterPrivate()
         {
             delete m_kjs;
         }
 
         DocumentPrivate *m_doc;
         ExecutorKJS *m_kjs;
         Event *m_event;
 };
 
 Scripter::Scripter( DocumentPrivate *doc )
     : d( new ScripterPrivate( doc ) )
 {
 }
 
 Scripter::~Scripter()
 {
     delete d;
 }
 
 QString Scripter::execute( ScriptType type, const QString &script )
 {
     qCDebug(OkularCoreDebug) << "executing the script:";
 #if 0
     if ( script.length() < 1000 )
         qDebug() << script;
     else
         qDebug() << script.left( 1000 ) << "[...]";
 #endif
+    static QString builtInScript;
+    if ( builtInScript.isNull() )
+    {
+        QFile builtInResource ( ":/script/builtin.js" );
+        if (!builtInResource.open( QIODevice::ReadOnly ))
+        {
+            qCDebug(OkularCoreDebug) << "failed to load builtin script";
+        }
+        else
+        {
+            builtInScript = QString::fromUtf8( builtInResource.readAll() );
+            builtInResource.close();
+        }
+    }
+
     switch ( type )
     {
         case JavaScript:
             if ( !d->m_kjs )
             {
                 d->m_kjs = new ExecutorKJS( d->m_doc );
             }
-            d->m_kjs->execute( script, d->m_event );
+            d->m_kjs->execute( builtInScript + script, d->m_event );
             break;
     }
     return QString();
 }
 
 void Scripter::setEvent( Event *event )
 {
     d->m_event = event;
 }
 
 Event *Scripter::event() const
 {
     return d->m_event;
 }