Supercharged Local Directory File Browser

Makes file:/// directory ("Index of...") pages (and many server-generated index pages) actually useful. Adds navigation links, file preview pane, keyboard navigation, user-defined shortcuts, filtering, more.
当前为 2019-01-03 提交的版本，查看最新版本。
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// ==UserScript==
// @name              Supercharged Local Directory File Browser
// @version           3.1.4
// @description       Makes file:/// directory ("Index of...") pages (and many server-generated index pages) actually useful. Adds navigation links, file preview pane, keyboard navigation, user-defined shortcuts, filtering, more.
// @author            Gaspar Schott (Michael Schrauzer) mshroud@gmail.com
// @license           GPL-3.0-or-later
// @homepageURL       https://openuserjs.org/scripts/gaspar_schot/Supercharged_Local_Directory_File_Browser
// @contributionURL   https://paypal.me/mschrauzer
// @include           file://*/
// @include           file://*/?*
// @include          *!localhost*/
 
// @require      http://code.jquery.com/jquery-latest.min.js
 
// NOTE: By default, userscripts will not run on file:/// urls, so for this script to work, you will have to enable it in your browser extension settings.
   // E.G.: For Tampermonkey in Chrome, go to Chrome the extension page, click the details button on the Tampermonkey pane and check 'Allow access to file URLs'.
   // NOTE: Safari does not allow local directories to be browsed, so the script will not work on local directories, but it will work on remote directories (or on local directories through a local server).
// NOTE: This script was developed in Vivaldi, running on Mac OS Mojave. It has been tested in several other Chrome and Gecko-based browsers.
   // It has been very minimally tested on Windows and not at all on other OSes or browsers. It should work, but please report any issues.
 
// @namespace https://greasyfork.org/users/16170
// ==/UserScript==
 
(function() {
    'use strict';
    var $ = jQuery;
 
    // ***** USER SETTINGS ***** //
 
    const $settings = {
 
        // Paste your exported settings between the two lines below:
        //--------------------------------------------------------//
 
        shortcuts:          // N.B.: Directory links must end with "/", file links must end with another character.
                            // You may add as many menus and links as you like; just copy the example below and edit as needed.
                            // Local directory shortcuts must begin with "file:///"; external shortcuts must begin with the correct protocol ("http://" or "ftp://", etc.).
                            // Hint: you can add query strings to your urls to override user settings on a site by site basis.
                            // Note that because of same-origin security concerns, the browser will not allow you to navigate from an external webpage to a local directory.
                            // (But see this page for possible workarounds: https://stackoverflow.com/questions/39007243/cannot-open-local-file-chrome-not-allowed-to-load-local-resource)
                              [
                                  {
                                  "menu_title":"My Sample Menu",
                                  "links":
                                      [
                                          { "link_name":"My Directory Link 1", "link":"file:///Path/To/My/Directory/" },
                                          { "link_name":"My Directory Link 2", "link":"file:///Path/To/My/Directory_2/" },
                                          { "link_name":"My External Link", "link":"https://www.mywebpage.com/" },
                                          { "link_name":"My File Link", "link":"file:///Path/To/My/File.ext" },
                                      ]
                                  },
                                  {
                                  "menu_title":"My Second Sample Menu",
                                  "links":
                                      [
                                          { "link_name":"My Directory Link 1", "link":"file:///Path/To/My/Directory/" },
                                          { "link_name":"My Directory Link 2", "link":"file:///Path/To/My/Directory_2/" },
                                          { "link_name":"My External Link", "link":"https://www.mywebpage.com/" },
                                          { "link_name":"My File Link", "link":"file:///Path/To/My/File.ext" },
                                      ]
                                  },
                              ],
 
       UI_font:              // Choose an installed font for the UI.
                             'lucidagrande, sans-serif',
       UI_font_size:         // Choose a default UI font size; use any standard CSS units.
                             '13px',
       alternate_background: // If true (default true), alternate sidebar row background color.
                             true,
       ignore_files:         // If true (default), ignored files (see "$row_settings" below, after Keybindings and Changelog) will be greyed-out (default) in the file list and will not be loaded in the content pane when selected;
                             // If false, they will be treated as normal files, so if they are selected, the browser will attempt to download any file types it can't handle (which makes keyboard navigation inconvenient).
                             true,
       hide_ignored_files:   // If true, ignored files will be completely hidden from the file list;
                             // If false (default), ignored files will appear greyed-out.
                             false,
       hide_invisibles:      // Un*x/Mac OS only: If true (default), files or directories beginning with a "." will be hidden.
                             true,
       hide_details:         // If true (default), hide file and directory details; if false, show them.
                             true,
       default_sort:         // Choose from: 'name', 'size', 'date', 'kind', 'ext', 'default'.
                             // default = Chrome sorting: dirs on top, files alphabetical.
                             'default',
       dirs_on_top:          // If true, directories will always be listed firs except when sorting by "name" (since otherwise sorting by "name" would equal "default").
                             // If false (default), directories and files will be sorted together. (In practice, dirs will typically still be separated when sorting by size, kind, and extension.)
                             false,
       apps_as_dirs:         // Un*x/Mac OS only: if true, treat apps as directories; allows app contents to be browsed. This is the default behavior for Chrome.
                             // If false (default), treat apps as ignored files.
                             false,
       dark_theme:            // If true (default: false), gives the content pane a dark background, and inverts html and text content.
                             false,
       grid_image_size:      // Default = 150
                             150,
       grid_font_size:       // Default = 1
                             1,
       autoload_media:       // If true (defautl: true), the first audio or video file found in a directory will be automatically selected and loaded for playback; also, cover art (if any, will be loaded in the preview pane).
                             true,
       autoload_index_files: // If true (default: false), automatically select first "index.ext" file found in directory.
                             false,
       use_custom_icons:     // if true (default), use custom icons for dirs and files
                             // if false, use browser/server default icons
                             true
        //--------------------------------------------------------//
        // Paste your exported settings between the above two lines.
    }
 
    // $ROW_TYPES:
    // DO NOT DELETE ANY EXISTING CATEGORIES!
    // Add file extensions for sorting and custom icon display to the existing categories.
    // You can also define your own new categories, but do not add an extension to more than one row_type category.
    // Do not add leading "." to the extensions.
    const $row_types = {
        // myCategory: ['ext1','ext2',],
        dir:      ['/'],
        app:      ['app/','app','exe','msi'],
        archive:  ['zip','rar','cbr','7z','tar','gz','dmg','pkg','archive'],
        audio:    ['mp3','m4a','aac','aif','aiff','ape','flac','ogg','wav'],
        font:     ['otf','ttf','woff','woff2','afm','pfb','pfm','tfm'],
        graphics: ['indd','idml','indt','icml','ai','eps','pages','qxp','qxb','qxd','mif','sla','dtp','pmd','pub','fm','book','inx'],
        htm:      ['htm','html','xhtm','xhtml'],
        image:    ['jpg','jpeg','png','apng','gif','bmp','webp','svg','tif','tiff','psd','raw','dng','cr2','nef','arw'],
        office:   ['doc','docx','epub','xls','xlsx','xlm','odt','odf','rtf'],
        pdf:      ['pdf'],
        text:     ['txt','log','md','nfo'],
        code:     ['c','conf','css','h','ini','js','json','jsx','less','list','lock','php','plist','py','sass','strings','xml'],
        video:    ['mpeg','mov','m4v','webm','mp4'],
    };
 
    // $ROW_SETTINGS: Ignore or Exclude files by extension
    const $row_settings = {
        ignore: // Files with these extensions will not be loaded if selected in the sidebar (prevents the browser from attempting to download the file).
        ['exe','doc','docx','rtf','xls','xlsx','odt','odp','csv','msi','dll','indd','idml','pages','numbers','tif','tiff','raw','dng','cr2','nef','arw','eps','psd','ai','afm','pfb','pfm','tfm','zip','pkg','swf','pls','ics','DS_Store','ds_store','ds_store','alias','dmg','gz','qxp','icon.jpg','thumbs.db','ape','srf','epub'],
        exclude: // Files with these exensions will not be inverted in dark mode
        ['htm','html','xhtm','xhtml'],
    };
 
   // ***** END USER SETTINGS ***** //
 
    // KEYBINDINGS:
 
    // Arrow Up/Down: Select prev/next item. If audio is playing, and prev/next file is also audio, it will be selected but not loaded in the audio player; press return to load it.
    // Arrow Left/Right: Select prev/next row of the same kind as the current selection, except if current selection is a media file, select and begin playback of that item.
    // Cmd/Ctrl + Arrow Up: Go to parent directory
    // Opt/Alt + Arrow Left/Right: Skip audio ±10s
    // Shift + Opt/Alt + Arrow Left/Right: Skip audio ±30s
    // Space: Pause/Play media files
    // Return: Open selected directory, select file, or pause/play media.
    // Cmd/Ctrl + D: Toggle file details (size, date modified) in some index page types.
    // Cmd/Ctrl + G: Show or Reset Grid
    // Cmd/Ctrl + I: Toggle Invisibles
    // Cmd/Ctrl + Shift + O: Open selected item in new window/tab
    // Cmd/Ctrl + R: Reload grids and previewed content, reset scaled images/fonts, reset media files to beginning.
    // Cmd/Ctrl + W: Close previewed content (doesn't work in all browsers; use close button instead), or close window if no content is being previewed.
    // Cmd/Ctrl + Shift + </>: Scale preview items and grids.
 
    // CHANGELOG:
 
    //• 3.1.4
    //• FIXED: Up and down arrow navigation didn't work properly if audio and video files were present in the same directory.
    //• FIXED: Prev/Next buttons in audio player weren't working.
    //• FIXED: Content pane didn't resize when audio player was closed.
    //• CHANGED: If autoload_media = false, don't autoload cover art when next audio track loads.
    //• IMPROVED: Better support for certain server-generated index pages.
 
    //• 3.1.3
    //• FIXED: Directories weren't being sorted properly because ending "/" was being considered.
 
    //• 3.1.2
    //• FIXED: Light theme image grid items had transparent backgrounds.
 
    //• 3.1.1
    //• CHANGED: If autoload_media = false, don't select anything.
    //• FIXED: Image grid columns weren't flexing to fill width.
 
    //• 3.1.0
    //• Improved font and image grid previews: added unstyled file names for clarity, file names are no longer lowercased, and dashes and underscores are replaced with spaces.
    //• Various small UI tweaks.
 
   //• 3.0.0
    //• NEW: Support for video playback (finally!). Default supported video extensions: .mpeg, .mov, .m4v, .webm, .mp4 (add additional extensions below in $row_types > video).
    //• IMPROVED: Cover art auto-selection: files with "back" in the name will be ignored and files with "front" or "cover" in the name will be selected.
    //• IMPROVED: Directory preview styling.
    //• IMPROVED: Better support for Firefox.
    //• ADDED: "Autoload media" menu item.
    //• CHANGED: "autoload_audio" renamed to "autoload_media"; if you export your user settings, please this update this item accordingly when you paste them back in.
    //• CHANGED: Completely reworked arrow navigation and autoload_media behavior because previous behavior was confusing.
      //• Up/Down Arrows will now always select the prev/next row.
        //• If the audio player is not visible, it will be displayed and the selected audio file will be loaded for playback.
        //• If audio is playing and the prev/next selected file is also audio, it will be selected but not loaded, so that the currently playing audio will not be interrupted. (Press return/enter to load and begin playback of selected audio.)
        //• Selecting audio files deselects video files and closes video player.
        //• Selecting video files deselects audio files and closes audio player.
      //• Left/Right Arrows will now always select the prev/next row of the same sort kind as the currently selected file, except:
        //• if the current selection is an audio file, the L/R arrows will select and begin playback of that selection.)
        //• Note that if the current selection is _not_ an audio file, any currently playing audio will continue without interruption.
    //• FIXED: Media files did not scroll into view when next file began playing.
    //• CHANGED: Autoload cover art now works irrespective of "autoload_media" setting.
    //• IMPROVED: Left/Right arrow navigation will select prev/next dir or row if there are no media, image, or font files are in the directory.
    //• IMPROVED: You can now close previewed content and audio files separately from each other.
    //• CHANGED: Audio file titles shown separately from other file or dir titles.
    //• IMPROVED: Added string normalization for navigation by typed string: accented characters will be matched by their base ASCII letter (e.g., á = a, Ñ = n, ß = s, etc.).
    //• IMPROVED: Added "other" sort category for files whose extensions are not listed in $row_types.
    //• FIXED: Parent links were incorrectly formatted.
    //• FIXED: Arrow buttons in preview pane were not working properly. Now, if an image or font is displayed, clicking the arrows will select the prev/next image or font file.
    //• ADDED: Contact link in shortcuts menu
    //• FIXED: "Donate" link.
    //• Fixes for various style glitches introduced in the last version.
    //• Many, many small fixes.
    //• CHANGED: moved $row_types to just below user settings, for easier management and updates.
    //• Internal: Reorganized, abstracted, and DRYed many functions; added more comments.
 
    // ***** GENERAL SETUP ***** //
 
   // ************************************ //
   // DON'T EDIT ANYTHING BELOW THIS LINE. //
   // ************************************ //
 
   // Styles for iFrame Directory Index pages
   if ( ( window.frameElement !== null || window.top != window.self) && window.location.href.endsWith('/') ) {
      const $custom_iframe_styles = document.createElement("style");
      var $iframe_styles = '';
 
      $iframe_styles += 'a.up' +
         '{ background:transparent; }';
      $iframe_styles += ':root, html, body' +
         '{ background-color:#BBB; }';
      $iframe_styles += 'body > table > thead, body > table > tbody > tr, body ul li' +
         '{ background:rgba(221,221,221,0.5); }';
      $iframe_styles += 'body > table > tbody > tr:nth-of-type(odd), body > ul > li:nth-of-type(odd)' +
         '{ background:rgba(221,221,221,1); }';
      $iframe_styles += 'body > table > tbody > tr:hover, body > ul > li:hover:not(:first-of-type)' +
         '{ background:#ABABAB; }';
 
      $iframe_styles += ':root, html, body' +
         '{ border:0 !important; }';
      $iframe_styles += 'body > table' +
         '{ border-top:solid 1px #888888; }';
      $iframe_styles += 'body > ul > li:first-of-type' +
         '{ border-bottom:solid 1px #888888; }';
      $iframe_styles += 'html, body' +
         '{ border-radius:0; }';
      $iframe_styles += 'body > table' +
         '{ border-collapse:collapse; }';
      $iframe_styles += 'html, body' +
         '{ box-sizing:border-box; }';
 
      $iframe_styles += '#parentDirLinkBox span' +
         '{ color:transparent; }';
      $iframe_styles += 'a:hover' +
         '{ color:#000000; }';
      $iframe_styles += 'a, #parentDirLinkBox span:before' +
         '{ color:#111111; }';
 
      $iframe_styles += '#parentDirLinkBox span:before' +
         '{ content:"Parent Directory"; }';
 
      $iframe_styles += '#UI_goUp a.up:before' +
          '{ display:none; }';
      $iframe_styles += 'a, li' +
         '{ display:block; }';
      $iframe_styles += '#UI_goUp, #UI_showHidden' +
          '{ display:inline-table; }';
 
      $iframe_styles += 'body > table table a:before' +
         '{ float:left; }';
 
       $iframe_styles += ':root, html, body, *' +
         '{ font-family:'+ $settings.UI_font +'; }';
      const $font_size_units = $settings.UI_font_size.replace(/\d*/,'');
      $iframe_styles += 'html, body' +
         '{ font-size:'+ parseFloat($settings.UI_font_size) * 0.875 + $font_size_units +'; }';
      $iframe_styles += 'body > div, body > table, thead, body p' +
         '{ font-size: 1em; }';
      $iframe_styles += 'body > ul > li:first-of-type, #parentDirLinkBox span:before, #UI_goUp a' +
         '{ font-weight:bold; }';
 
      $iframe_styles += 'html' +
         '{ height:100%; }';
      $iframe_styles += 'body' +
         '{ height:auto; }';
      $iframe_styles += '#UI_goUp, #UI_showHidden, #UI_showHidden label' +
          '{ height:1.5em !important; }';
 
      $iframe_styles += 'body > table > tbody > tr, body > ul > li' +
          '{ line-height:1.5; }';
      $iframe_styles += '#UI_goUp, #UI_showHidden' +
          '{ line-height:2; }';
 
       $iframe_styles += 'body > ul' +
         '{ list-style:none; }';
 
      $iframe_styles += 'html, body, body div, body > ul > li a, #UI_goUp, #UI_showHidden, #parentDirLink, #parentDirLinkBox' +
         '{ margin:0; }';
      $iframe_styles += 'body > div' +
         '{ margin:1em; }';
      $iframe_styles += 'body p' +
         '{ margin:1rem; }';
      $iframe_styles += 'body > ul > li' +
         '{ margin-bottom:0; }';
      $iframe_styles += '.up' +
         '{ margin-inline-start:0; }';
       $iframe_styles += '.dir::before, .file > img' + // firefox
           '{ margin-inline-end: 6px; }';
 
      $iframe_styles += ':root, html, body, body > div, body > ul > li, .up' +
         '{ padding:0; }';
 
      $iframe_styles += 'body > table > tbody > tr > td, body > table > thead > tr > th, body > ul > li a, #parentDirLinkBox, #UI_goUp, #UI_showHidden' +
         '{ padding-top:3px; }';
 
      $iframe_styles += 'body > table > tbody > tr > td:first-of-type, body > table > thead > tr > th:first-of-type, body > ul > li a' +
         '{ padding-right:0; }';
      $iframe_styles += 'body > table th:last-of-type, body > table > tbody > tr > td:last-of-type, body > ul > li a, #parentDirLinkBox, #UI_showHidden' +
         '{ padding-right:1em; }';
 
       $iframe_styles += '#parentDirLinkBox' +
         '{ padding-bottom:0; }';
      $iframe_styles += 'body > table > tbody > tr > td, body > table > thead > tr > th, body > ul > li a, #parentDirLinkBox, #UI_goUp, #UI_showHidden' +
         '{ padding-bottom:3px; }';
 
       $iframe_styles += 'body > ul' +
         '{ padding-left:0; }';
      $iframe_styles += 'body > table > tbody > tr > td:first-of-type, body > table > thead > tr > th:first-of-type, body > ul > li a, #parentDirLinkBox, #UI_goUp' +
         '{ padding-left:1em; }';
 
       $iframe_styles += 'th:not(:first-of-type)' +
         '{ text-align:right; }';
       $iframe_styles += 'th:first-of-type' +
         '{ text-align:left; }';
      $iframe_styles += 'a, a:hover, td:hover, li:hover' +
         '{ text-decoration:none !important; }';
       $iframe_styles += 'a.icon' +
         '{ text-indent:2px; }';
 
      $iframe_styles += '#UI_goUp, #UI_showHidden' +
          '{ vertical-align:middle; }';
 
       $iframe_styles += 'html, body, body > table' +
         '{ width:100%; }';
      $iframe_styles += 'thead th:first-of-type' +
         '{ width:50%; }';
      $iframe_styles += 'html, body' +
         '{ max-width:100%; }';
      $iframe_styles += 'html, body' +
         '{ min-width:100%; }';
      $iframe_styles += 'body table tr, body ul li, body > table > tbody > tr:hover' +
         '{ outline:0; }';
 
      $('body').css({'font-family':$settings.UI_font});
      $('body > h1, address, body > hr').remove();
      $('body > table > tbody').find('hr').closest('tr').remove();
      $('body > table th:contains("Name")').css({'text-align':'left'});
      $('body > table th:contains("Size")').css({'text-align':'right'});
      // pre type
      if ( $('body > pre').length ) {
         let $list_items = $('body pre').html();
         let $parent_dir = $('body pre').find('a:contains("Parent")').first().attr('href');
         $list_items = '<table>' + $list_items.replace(/<a.+?>Parent Directory<\/a>/,'').replace(/^\s*<a.+?<\/a><hr>/g,'').replace(/<a /g,'<tr><td><a ').replace(/\r/g,'</td></tr>').replace(/\s{2,}/g,'</td><td>') + '</table>';
         $('body').empty().append($list_items).find('tr:first-of-type').remove();
         $('body').prepend('<div id="parentDirLinkBox"><a href="'+ $parent_dir +'">Parent Directory</a></div>');
 
      }
 
      $custom_iframe_styles.appendChild(document.createTextNode(""));
      $custom_iframe_styles.append($iframe_styles);
      document.head.appendChild($custom_iframe_styles);
 
      return;
   }
 
   // Experimental: Don't run script in previewed contentEditable text and html files.
   if ( window.location.pathname.slice(-1) != '/') {
      // $('body').attr('contentEditable','true');
      return;
   }
 
   const $userAgent = navigator.userAgent;
 
   // PATHS
   var $href = decodeURIComponent(window.location.href); // complete URL including query string: http://www.host.com/path/to/my_dir/?query_string
   var $location = decodeURIComponent( [location.protocol, '//', location.host, location.pathname].join('') );
   var $location_arr = $location.split('/');
   var $current_dir_path = $location.replace(/\//g,'/<wbr>').replace(/_/g,'_<wbr>').replace(/—/g,'—<wbr>').replace(/\\/g,'/'); // URL w/o query string for display
   var $current_dir_name = $location.replace(/%20/g,' ').slice(0,-1);
       $current_dir_name = $current_dir_name.slice($current_dir_name.lastIndexOf('/') + 1); // Dir name without parents for display: "my_dir"
 
   // QUERY PREFS
   var getQueryPrefs = function() { return new URLSearchParams( window.location.search ); };
   var $query_prefs = getQueryPrefs();
   var $UI_pref_width = $query_prefs.get('width') === null ? '25' : (Math.round(100*($query_prefs.get('width'))/window.innerWidth)).toString(); // number string
   var $UI_pref_theme = $query_prefs.get('dark_theme') === null ? $settings.dark_theme : JSON.parse( $query_prefs.get('dark_theme') ); // bool
   var $UI_pref_background = $query_prefs.get('alternate_background') === null ? $settings.alternate_background : JSON.parse( $query_prefs.get('alternate_background') ); // bool
   var $UI_pref_details = $query_prefs.get('hide_details') === null ? $settings.hide_details : JSON.parse( $query_prefs.get('hide_details') );
   var $UI_pref_sort = $query_prefs.get('sort') === null ? $settings.default_sort.toLowerCase() : $query_prefs.get('sort');
   var $UI_pref_file = $query_prefs.get('file') === null ? '' : $query_prefs.get('file');
   var $UI_pref_autoload_media = $query_prefs.get('autoload_media') == null ? $settings.autoload_media : JSON.parse( $query_prefs.get('autoload_media') );
   // var $UI_pref_invisibles = $query_prefs.get('hide_invisibles') == null ? $settings.hide_invisibles.toLowerCase() : $query_prefs.get('hide_invisibles');
   var $UI_pref_selected = $query_prefs.get('selected') === null ? '' : JSON.parse( $query_prefs.get('selected') );
   var $UI_pref_history = $query_prefs.get('history') === null ? '' : $query_prefs.get('history');
   var $UI_pref_history_arr;
   var $grid_image_size = $settings.grid_image_size ? $settings.grid_image_size : 150;
   var $grid_font_size = $settings.grid_font_size ? $settings.grid_font_size : 1;
   // set query key/value
   function setQuery(key, value) {
      $query_prefs = getQueryPrefs();
      $query_prefs.set( key, value );
      updateQuery();
   }
   // toggle query key
   function toggleQuery(key) {
      var value;
      $query_prefs = getQueryPrefs();
      value = $query_prefs.has(key) ? JSON.parse( $query_prefs.get(key) ) : $settings[key];
      value === true ? $query_prefs.set( key, 'false' ) : $query_prefs.set( key, 'true' );
      updateQuery();
   }
   // update query string
   function updateQuery() {
      $query_prefs = decodeURIComponent($query_prefs);
      window.history.replaceState({}, document.title, window.location.pathname +'?'+ $query_prefs);
   }
 
   // Globals
   var e, i, j, n;
 
   // ***** SET UP UI ELEMENTS ***** //
 
   const $body = $('body');
   $body.attr('lang','en').find('> h1:contains("Index of"),> #parentDirLinkBox,> #UI_goUp,#UI_showHidden').remove();
   $('head').prepend('<meta charset="utf-8">');
 
   // ***** SIDEBAR ELEMENTS ***** //
   const $parent_dir_menu =    $('<nav id="parent_dir_menu"><a href="">&nbsp;</a></nav>');
   const $parents_dir_menu =   $('<nav id="parents_dir_menu"><div></div></nav><ul class="menu"></ul>');
   const $shortcuts_menu =     $('<nav id="shortcuts_menu"><div>&nbsp;</div></nav><ul id="shortcuts" class="menu"></ul>');
   const $details_btn =        $('<button id="details_btn" tabindex="-1"><span>Show details</span><span>Hide details</span></button>');
   const $inv_checkbox =       $('<label ><input type="checkbox" id="inv_checkbox" for="inv_checkbox" name="inv_checkbox" tabindex="-1" />Hide Invisibles</label>');
   const $grid_btn =           $('<div id="grid_btn" tabindex="-1" title="Show Grid"><ul class="menu"><li id="show_image_grid">Show Image Grid</li><li id="show_font_grid">Show Font Grid</li></ul></div>');
   const $sidebar_header =     $('<table id="sidebar_header"><thead><tr><th colspan="3">INDEX OF</th></tr></thead><tbody><tr><td></td><td></td><td></td></tr><tr><td colspan="3"></td></tr></tbody></table>');
   const $dir_list_head =      $('<thead id="thead"><tr id="theader" class="header"><th id="name" class="name"><input id="play_toggle" type="checkbox" tabindex="-1" checked="true" />Name</th><th id="size" class="details">Size</th><th id="date" class="details">Date</th><th id="kind" class="details">Kind</th><th id="ext" class="details">Ext</th><th id="default" class="details">Default</th></tr></thead>');
   const $dir_list_body =      $('<tbody id="tbody"></tbody>');
   const $dir_list =           $('<table id="dir_list"></table>');
   const $dir_list_wrapper =   $('<div id="dir_list_wrapper"></div>');
   const $sidebar =            $('<div id="sidebar"></div>');
   const $handle =             $('<div id="handle"></div>');
   const $sidebar_wrapper =    $('<td id="sidebar_wrapper"></td>');
   const $toggle_sidebar =     $('<div id="toggle_sidebar"></div>');
 
   // ***** CONTENT PANE ELEMENTS ***** //
   const $sidebar_overlay =    $('<div id="sidebar_overlay"></div>');
   const $content_overlay =    $('<div id="content_overlay"></div>');
   const $content_grid =       $('<div id="content_grid" data-grid-scale-factor="0" data-kind="grid"></div>');
   const $image_grid_item_el = $('<div class="image_grid_item"><a href=""><img src="/" /></a></div>');
   const $font_grid_item_el =  $('<div class="font_grid_item"></div>');
   const $content_scale =      $('<div id="scale"><span id="increase"></span><span id="decrease"></span></div>');
   const $sample_string =      'ABCDEFGHIJKLMNOPQRSTUVWXYZ<br />abcdefghijklmnopqrstuvwxyz<br />0123456789 [(!@#$%^&*;:)]';
   const $lorem_string =       'Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.';
   const $specimen =           $('<div class="specimen" style="font-size:3em;">'+ $sample_string +'</div><div class="lorem first" style="font-size:1em;">'+ $lorem_string +'</div><div class="lorem" style="font-size:1em;">'+ $lorem_string +'</div><div class="lorem" style="font-size:1em;">'+ $lorem_string +'</div>');
   const $content_font =       $('<div id="content_font" spellcheck="false" contenteditable="true" data-kind="font"></div>');
   const $image =              $('<img class="" data-kind="image" />');
   const $content_image =      $('<div id="content_image" data-image-scale-factor="1" data-kind="image"></div>');
   const $content_pdf =        $('<embed id="content_pdf" name="plugin" type="application/pdf" tabindex="0" data-kind="pdf"></embed>');
   const $content_iframe =     $('<iframe id="content_iframe" sandbox="allow-scripts allow-same-origin allow-modals" tabindex="0" data-kind="file"></iframe>');
   const $content_video =      $('<video id="content_video" class="media" controls data-kind="video">Your browser does not support the video tag.</video>');
   const $content_audio_title = $('<tr id="content_audio_title"><td colspan="3"></td></tr>');
   const $content_audio =      $('<tr id="content_audio"><td colspan="3"></td></tr>');
   const $prev_track =         $('<div id="prev_track" class="prev_next_track_btn" title="Previous track"></div>');
   const $next_track =         $('<div id="next_track" class="prev_next_track_btn" title="Next track"></div>');
   const $audio =              $('<audio id="audio" preload="auto" tabindex="0" controls>Sorry, your browser does not support HTML5 audio.</audio>');
   const $loop =               $('<label><input type="checkbox" id="loop" for="loop" name="loop" tabindex="0" />Loop</label>');
   const $shuffle =            $('<label><input type="checkbox" id="shuffle" for="shuffle" name="shuffle" tabindex="0" />Shuffle</label>');
   const $close_audio =        $('<div id="close_audio" title="Close audio"></div>');
   const $checkbox_cont =      $('<div id="checkbox_div"></div>');
   const $content_reload_btn = $('<td><button id="reload_btn" tabindex="-1">Reload</button></td>');
   const $content_stop_btn =   $('<td><button id="stop" tabindex="-1">Stop</button></td>');
   const $content_title =      $('<tr id="content_title"><td id="title"></td></tr>');
   const $content_close_btn =  $('<td><button id="close_btn" tabindex="-1">Close</button></td>');
   const $content_header =     $('<header id="content_header"><table><tbody></tbody></table></header>');
   const $prev_btn =           $('<div class="nav_btn" id="prev_btn"></div>');
   const $next_btn =           $('<div class="nav_btn" id="next_btn"></div>');
   const $content_container =  $('<section id="content_container"></section>');
   const $content_pane =       $('<td id="content_pane"></td>');
 
   // SVG UI ICONS
   const $svg_prefix = 'url("data:image/svg+xml;utf8,<svg version=\'1.1\' id=\'Layer_1\' xmlns=\'http://www.w3.org/2000/svg\' xmlns:xlink=\'http://www.w3.org/1999/xlink\' x=\'0px\' y=\'0px\' ';
   const $up_arrow =                $svg_prefix + 'width=\'12.728px\' height=\'7.779px\' viewBox=\'0 0 12.728 7.779\' enable-background=\'new 0 0 12.728 7.779\' xml:space=\'preserve\'><path fill=\'%23444444\' d=\'M6.364,2.828l4.95,4.949l1.414-1.414L6.364,0l0,0L0,6.363l1.413,1.416L6.364,2.828\'/></svg>")';
   const $up_arrow_inv =            $svg_prefix + 'width=\'12.728px\' height=\'7.779px\' viewBox=\'0 0 12.728 7.779\' enable-background=\'new 0 0 12.728 7.779\' xml:space=\'preserve\'><path fill=\'%23CCCCCC\' d=\'M6.364,2.828l4.95,4.949l1.414-1.414L6.364,0l0,0L0,6.363l1.413,1.416L6.364,2.828\'/></svg>")';
   const $svg_arrow =               $svg_prefix + 'width=\'11px\' height=\'16px\' viewBox=\'234.5 248 11 16\' enable-background=\'new 234.5 248 11 16\' xml:space=\'preserve\'><path d=\'M245.5,261l-3,3l-8-8l8-8l3,3l-5,5L245.5,261z\'/></svg>")';
   const $toggle =                  $svg_prefix + 'width=\'13.779px\' height=\'12.729px\' viewBox=\'2.474 -2.475 13.779 12.729\' enable-background=\'new 2.474 -2.475 13.779 12.729\' xml:space=\'preserve\'> <path fill=\'%23444444\' d=\'M5.302,3.889l4.949-4.95L8.838-2.475L2.474,3.889l0,0l6.363,6.364l1.416-1.413L5.302,3.889\'/> <path fill=\'%23444444\' d=\'M11.302,3.889l4.949-4.95l-1.414-1.414L8.474,3.889l0,0l6.363,6.364l1.416-1.413L11.302,3.889\'/> </svg>")';
   const $check_mark =              $svg_prefix + 'width=\'17px\' height=\'14px\' viewBox=\'250.182 490.01 17 14\' enable-background=\'new 250.182 490.01 16.971 14.143\' xml:space=\'preserve\'><polygon fill=\'%23444444\' points=\'255.839,498.495 253.011,495.667 250.182,498.496 255.839,504.152 267.152,492.838 264.323,490.01 \'/></svg>")';
   const $check_mark_inv =          $svg_prefix + 'width=\'17px\' height=\'14px\' viewBox=\'250.182 490.01 17 14\' enable-background=\'new 250.182 490.01 16.971 14.143\' xml:space=\'preserve\'><polygon fill=\'%23CCCCCC\' points=\'255.839,498.495 253.011,495.667 250.182,498.496 255.839,504.152 267.152,492.838 264.323,490.01 \'/></svg>")';
   const $menu_arrow =              $svg_prefix + 'width=\'24px\' height=\'16px\' viewBox=\'0 0 24 16\' enable-background=\'new 0 0 24 16\' xml:space=\'preserve\'> <polygon fill=\'%23444444\' points=\'0,0 13.873,8.008 0.001,16.017 \'/> </svg>")';
   const $menu_arrow_inv =          $svg_prefix + 'width=\'24px\' height=\'16px\' viewBox=\'0 0 24 16\' enable-background=\'new 0 0 24 16\' xml:space=\'preserve\'> <polygon fill=\'%23CCCCCC\' points=\'0,0 13.873,8.008 0.001,16.017 \'/> </svg>")';
   const $menu_icon =               $svg_prefix + 'width=\'13px\' height=\'10px\' viewBox=\'0 0 13 10\' enable-background=\'new 0 0 13 10\' xml:space=\'preserve\'><rect fill=\'%23444444\' width=\'13\' height=\'2\'/><rect y=\'4\' fill=\'%23444444\' width=\'13\' height=\'2\'/><rect y=\'8\' fill=\'%23444444\' width=\'13\' height=\'2\'/></svg>")';
   const $grid_icon =               $svg_prefix + 'width=\'16px\' height=\'16px\' viewBox=\'0 0 16 16\' enable-background=\'new 0 0 16 16\' xml:space=\'preserve\'><g><path fill=\'%23666666\' d=\'M5,2v3H2V2H5 M7,0H0v7h7V0L7,0z\'/></g><g><path fill=\'%23666666\' d=\'M14,2v3h-3V2H14 M16,0H9v7h7V0L16,0z\'/></g><g><path fill=\'%23666666\' d=\'M5,11v3H2v-3H5 M7,9H0v7h7V9L7,9z\'/></g><g><path fill=\'%23666666\' d=\'M14,11v3h-3v-3H14 M16,9H9v7h7V9L16,9z\'/></g></svg>")';
   const $plus_sign =               $svg_prefix + 'width=\'16px\' height=\'16px\' viewBox=\'0 0 16 16\' xml:space=\'preserve\'><polygon points=\'16,6.5 9.5,6.5 9.5,0 6.5,0 6.5,6.5 0,6.5 0,9.5 6.5,9.5 6.5,16 9.5,16 9.5,9.5 16,9.5 \'/></svg>")';
   const $minus_sign =              $svg_prefix + 'width=\'16px\' height=\'16px\' viewBox=\'0 0 16 16\' xml:space=\'preserve\'> <rect x=\'1\' y=\'6.499\' width=\'14\' height=\'3.001\'/> </svg>")';
   const $next_track_arrow =        $svg_prefix + 'width=\'12.8px\' height=\'14px\' viewBox=\'-2 0 12.8 14\' enable-background=\'new -2 0 12.8 14\' xml:space=\'preserve\'><polygon fill=\'%23919191\' points=\'10.873,14.017 0,7.01 10.872,0 \'/><rect x=\'-2\' y=\'0\' fill=\'%23919191\' width=\'2\' height=\'14\'/></svg>")';
   const $next_track_arrow_gecko =  $svg_prefix + 'width=\'12.8px\' height=\'14px\' viewBox=\'-2 0 12.8 14\' enable-background=\'new -2 0 12.8 14\' xml:space=\'preserve\'><polygon fill=\'white\' points=\'10.873,14.017 0,7.01 10.872,0 \'/><rect x=\'-2\' y=\'0\' fill=\'white\' width=\'2\' height=\'14\'/></svg>")';
   const $next_track_arrow_gecko_hover = $svg_prefix + 'width=\'12.8px\' height=\'14px\' viewBox=\'-2 0 12.8 14\' enable-background=\'new -2 0 12.8 14\' xml:space=\'preserve\'><polygon fill=\'%236bb5ff\' points=\'10.873,14.017 0,7.01 10.872,0 \'/><rect x=\'-2\' y=\'0\' fill=\'%236bb5ff\' width=\'2\' height=\'14\'/></svg>")';
   const $music =                        $svg_prefix + 'width=\'143.717px\' height=\'199.404px\' viewBox=\'0 0 143.717 199.404\' enable-background=\'new 0 0 143.717 199.404\' xml:space=\'preserve\'><g opacity=\'0.2\'> <path fill=\'%23757679\' d=\'M143.717,143.82c0,10.033-4.573,18.425-13.717,25.183c-8.394,6.143-17.776,9.211-28.149,9.211 c-6.074,0-11.056-1.432-14.943-4.297c-4.301-3.275-6.45-7.849-6.45-13.719c0-9.279,4.403-17.438,13.204-24.466 c8.326-6.616,17.266-9.93,26.82-9.93c8.052,0,13.922,1.605,17.606,4.812V25.487L63.26,45.654v119.354 c0,10.03-4.573,18.427-13.717,25.181c-8.394,6.142-17.778,9.215-28.148,9.215c-6.077,0-11.055-1.437-14.947-4.302 C2.151,191.827,0,187.253,0,181.386c0-9.282,4.401-17.436,13.206-24.465c8.323-6.615,17.262-9.929,26.817-9.929 c8.051,0,13.921,1.605,17.606,4.812V23.237L143.717,0V143.82z\'/></g></svg>")';
   //SVG FILE ICONS
   // Chrome default icons
   const $file_icon_dir_default =   'url("data:image/png;base64,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 ")';
   const $file_icon_file_default =  'url("data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAIAAACQkWg2AAAABnRSTlMAAAAAAABupgeRAAABHUlEQVR42o2RMW7DIBiF3498iHRJD5JKHurL+CRVBp+i2T16tTynF2gO0KSb5ZrBBl4HHDBuK/WXACH4eO9/CAAAbdvijzLGNE1TVZXfZuHg6XCAQESAZXbOKaXO57eiKG6ft9PrKQIkCQqFoIiQFBGlFIB5nvM8t9aOX2Nd18oDzjnPgCDpn/BH4zh2XZdlWVmWiUK4IgCBoFMUz9eP6zRN75cLgEQhcmTQIbl72O0f9865qLAAsURAAgKBJKEtgLXWvyjLuFsThCSstb8rBCaAQhDYWgIZ7myM+TUBjDHrHlZcbMYYk34cN0YSLcgS+wL0fe9TXDMbY33fR2AYBvyQ8L0Gk8MwREBrTfKe4TpTzwhArXWi8HI84h/1DfwI5mhxJamFAAAAAElFTkSuQmCC ")';
   // Custom file icons
   const $svg_icon_prefix = 'url("data:image/svg+xml;utf8,<svg version=\'1.1\' id=\'Layer_1\' xmlns=\'http://www.w3.org/2000/svg\' xmlns:xlink=\'http://www.w3.org/1999/xlink\' x=\'0px\' y=\'0px\' width=\'14px\' height=\'14px\' viewBox=\'0 0 14 14\' enable-background=\'new 0 0 14 14\' xml:space=\'preserve\'> ';
   const $file_icon_dir =           $svg_icon_prefix + '<polygon fill=\'%233399FF\' points=\'6.1,2.7 4.8,1 0,1 0,13 14,13 14,2.7 \'/> <rect x=\'1.5\' y=\'4.2\' fill=\'%2399CCFF\' width=\'11\' height=\'7.3\'/> </svg> ")';
   const $file_icon_dir_invisible = $svg_icon_prefix + '<polygon fill=\'%23888888\' points=\'6.1,2.7 4.8,1 0,1 0,13 14,13 14,2.7 \'/> <rect x=\'1.5\' y=\'4.2\' fill=\'%23BBBBBB\' width=\'11\' height=\'7.3\'/> <circle fill=\'%23888888\' cx=\'7\' cy=\'7.9\' r=\'1\'/> </svg> ")';
   const $file_icon_app =           $svg_icon_prefix + '<g> <polygon style=\'fill:%230066FF;\' points=\'14,0 0,0 0,14 14,14 \'/> </g> <path style=\'fill:%23FFFFFF;\' d=\'M6.466,3.696L5.854,3.421c-0.175-0.078-0.381,0.003-0.455,0.18L5.086,4.348l1.241,0.578l0.315-0.791 C6.71,3.965,6.632,3.771,6.466,3.696z\'/> <polygon style=\'fill:%23FFFFFF;\' points=\'4.955,4.663 2.755,9.922 4.091,10.544 6.201,5.243 \'/> <polygon style=\'fill:%23FFFFFF;\' points=\'2.625,10.237 2.563,12.166 3.955,10.856 \'/> <polygon style=\'fill:%23FFFFFF;\' points=\'9.998,6.663 10.569,8.027 13.143,8.027 13.143,6.663 \'/> <path style=\'fill:%23FFFFFF;\' d=\'M9.838,7.164L7.594,1.797C7.52,1.619,7.314,1.538,7.139,1.616L6.527,1.893 C6.36,1.968,6.282,2.16,6.35,2.329l2.17,5.449L9.838,7.164z\'/> <polygon style=\'fill:%23FFFFFF;\' points=\'9.97,7.479 8.646,8.096 9.021,9.035 10.367,8.43 \'/> <path style=\'fill:%23FFFFFF;\' d=\'M10.479,8.753l-1.3,0.585L9.178,9.339c-0.041,0.311-0.073,0.736,0.073,1.07 c0.35,0.798,1.045,1.264,0.923,1.959c0,0,0.887-1.152,0.989-1.896C11.286,9.579,10.82,9.05,10.479,8.753z\'/> <polygon style=\'fill:%23FFFFFF;\' points=\'5.459,8.027 8.251,8.027 7.708,6.663 6.003,6.663 \'/> <polygon style=\'fill:%23FFFFFF;\' points=\'3.749,6.663 0.857,6.663 0.857,8.027 3.178,8.027 \'/> </svg> ")';
   const $file_icon_file =          $svg_icon_prefix + '<g> <polygon fill=\'%23888888\' points=\'8.3,0 1.5,0 1.5,14 12.5,14 12.5,4.2 \'/> <polygon fill=\'%23FFFFFF\' points=\'11,12.5 3,12.5 3,1.5 6.8,1.5 6.8,5.7 11,5.7 \'/> <polygon fill=\'%23FFFFFF\' points=\'8.3,4.2 10.2,4.2 8.3,2.2 \'/> </g> </svg> ")';
   const $file_icon_text =          $svg_icon_prefix + '<g> <polygon style=\'fill:%238888AA;\' points=\'14,0 0,0 0,14 14,14 \'/> </g> <g> <rect x=\'2.155\' y=\'2.187\' style=\'fill:%23FFFFFF;\' width=\'9.69\' height=\'1.14\'/> </g> <g> <rect x=\'2.155\' y=\'5.036\' style=\'fill:%23FFFFFF;\' width=\'9.69\' height=\'1.14\'/> </g> <g> <rect x=\'2.155\' y=\'7.886\' style=\'fill:%23FFFFFF;\' width=\'9.69\' height=\'1.141\'/> </g> <g> <rect x=\'2.155\' y=\'10.736\' style=\'fill:%23FFFFFF;\' width=\'6.555\' height=\'1.14\'/> </g> </svg> ")';
   const $file_icon_image =         $svg_icon_prefix + '<g id=\'Layer_2\'> </g> <circle fill=\'%23FFEE22\' cx=\'5.5\' cy=\'3.2\' r=\'1.5\'/> <g> <path fill=\'%23FFFFFF\' d=\'M5.6,7.5L3.8,6L0.2,8.7c0.1,0.6,0.6,1.5,0.5,1.3l3-2.4L5.6,9l4.7-4l3.6,3.2l0,0C14,7.8,14,7.4,14,7 c0-0.1,0-0.3,0-0.4l-3.6-3.2L5.6,7.5z\'/> </g> <path fill=\'%2399AADD\' d=\'M3.8,6l1.8,1.5l4.8-4.1L14,6.6C13.8,2.9,10.7,0,7,0C3.1,0,0,3.1,0,7c0,0.6,0.1,1.2,0.2,1.7L3.8,6z\'/> <path fill=\'%233366CC\' d=\'M10.3,5L5.6,9L3.7,7.6l-3,2.4c1.1,2.4,3.5,4,6.3,4c3.4,0,6.3-2.5,6.9-5.8L10.3,5z\'/> <circle fill=\'%23FFE650\' cx=\'5.5\' cy=\'3.2\' r=\'1.5\'/> </svg> ")';
   const $file_icon_pdf =           $svg_icon_prefix + '<g> <polygon style=\'fill:%23D84444;\' points=\'14,0 0,0 0,14 14,14 14,0 \'/> </g> <path style=\'fill:%23FFFFFF;\' d=\'M12.634,9.094c-0.074,0.047-0.288,0.075-0.423,0.075c-0.439,0-0.981-0.202-1.745-0.529 c0.294-0.022,0.562-0.031,0.803-0.031c0.441,0,0.569,0,1.002,0.108C12.7,8.824,12.705,9.047,12.634,9.094z M4.99,9.162 c0.17-0.3,0.345-0.616,0.521-0.952c0.435-0.822,0.712-1.469,0.914-1.997c0.409,0.742,0.917,1.37,1.51,1.876 C8.011,8.151,8.09,8.212,8.174,8.276C6.962,8.519,5.914,8.809,4.99,9.162z M6.404,1.383c0.241,0,0.38,0.606,0.391,1.179 c0.011,0.568-0.12,0.965-0.287,1.265c-0.14-0.441-0.203-1.129-0.203-1.581C6.305,2.245,6.295,1.383,6.404,1.383z M1.663,12.3 c0.14-0.374,0.68-1.113,1.479-1.771c0.051-0.037,0.175-0.155,0.289-0.263C2.596,11.603,2.033,12.133,1.663,12.3z M12.864,8.31 c-0.24-0.238-0.781-0.363-1.599-0.373c-0.555-0.008-1.218,0.041-1.923,0.138C9.03,7.893,8.707,7.697,8.451,7.459 c-0.683-0.64-1.25-1.524-1.606-2.497c0.021-0.094,0.044-0.171,0.062-0.253c0,0,0.383-2.186,0.28-2.925 c-0.015-0.104-0.021-0.131-0.05-0.21L7.104,1.486c-0.103-0.241-0.31-0.497-0.633-0.483L6.283,0.997H6.28 c-0.358,0-0.654,0.184-0.729,0.456c-0.233,0.864,0.007,2.15,0.444,3.818L5.882,5.544c-0.312,0.76-0.704,1.527-1.048,2.203 L4.787,7.836c-0.362,0.71-0.693,1.315-0.99,1.825l-0.31,0.165c-0.021,0.014-0.551,0.292-0.675,0.367 c-1.053,0.628-1.752,1.343-1.868,1.91c-0.037,0.179-0.009,0.41,0.178,0.52l0.299,0.148c0.129,0.064,0.269,0.096,0.406,0.096 c0.75,0,1.621-0.931,2.817-3.023c1.387-0.452,2.965-0.828,4.347-1.035c1.052,0.595,2.346,1.006,3.163,1.006 c0.146,0,0.271-0.013,0.373-0.042c0.155-0.04,0.288-0.129,0.369-0.254c0.156-0.235,0.191-0.563,0.146-0.901 C13.032,8.519,12.95,8.395,12.864,8.31z\'/> </svg> ")';
   const $file_icon_font =          $svg_icon_prefix + '<g><polygon style=\'fill:%23770099;\' points=\'14,0 0,0 0,14 14,14    \'/></g><g><path style=\'fill:%23FFFFFF;\' d=\'M4.599,11.321h1.44V2.774H3.334v1.088H1.83V1.222h10.34v2.641h-1.505V2.774H7.977v8.547h1.393v1.457 H4.599V11.321z\'/></g></svg>")';
   const $file_icon_code =          $svg_icon_prefix + '<g> <polygon style=\'fill:%237722DD;\' points=\'14,0 0,0 0,14 14,14 \'/> </g> <g> <path style=\'fill:%23FFFFFF;\' d=\'M5.892,12.965c-1.049,0-1.784-0.161-2.209-0.48c-0.425-0.317-0.638-0.82-0.638-1.503V8.915 c0-0.446-0.146-0.764-0.438-0.95C2.315,7.777,1.898,7.684,1.351,7.684V6.316c0.547,0,0.967-0.094,1.259-0.28s0.438-0.5,0.438-0.938 V3.006c0-0.675,0.217-1.172,0.65-1.491C4.13,1.195,4.862,1.036,5.893,1.036v1.312c-0.401,0.01-0.718,0.09-0.952,0.24 c-0.233,0.15-0.348,0.426-0.348,0.827V5.4c0,0.876-0.511,1.396-1.532,1.559v0.083c1.021,0.154,1.532,0.67,1.532,1.544v1.997 c0,0.41,0.116,0.688,0.349,0.835c0.233,0.146,0.55,0.223,0.951,0.232L5.892,12.965L5.892,12.965z\'/> <path style=\'fill:%23FFFFFF;\' d=\'M8.045,12.965v-1.313c0.392-0.009,0.706-0.089,0.944-0.239c0.236-0.15,0.355-0.426,0.355-0.829 V8.588c0-0.867,0.511-1.382,1.531-1.545V6.959C9.855,6.795,9.345,6.28,9.345,5.413V3.416c0-0.41-0.116-0.688-0.349-0.834 C8.764,2.436,8.447,2.358,8.045,2.349V1.036c1.049,0,1.785,0.159,2.21,0.479c0.423,0.319,0.637,0.821,0.637,1.505v2.065 c0,0.447,0.146,0.765,0.438,0.951c0.292,0.187,0.711,0.28,1.257,0.28v1.367c-0.546,0.012-0.967,0.107-1.259,0.287 C11.035,8.153,10.89,8.47,10.89,8.915v2.08c0,0.674-0.217,1.172-0.65,1.491C9.808,12.805,9.075,12.965,8.045,12.965z\'/> </g> </svg>")';
   const $file_icon_html =          $svg_icon_prefix + '<path style=\'fill:%23FFFFFF;\' d=\'M7,14c-3.9,0-7-3.1-7-7C0,3.2,3.1,0,7,0H7C8.9,0,10.6,0.7,12,2C13.3,3.4,14,5.1,14,7 c0,1.9-0.7,3.6-2,5C10.7,13.3,8.9,14,7,14C7,14,7,14,7,14z\'/> <g> <path style=\'fill:%23EE7700;\' d=\'M5.3,1.1C4.7,1.9,4.2,2.6,3.8,3.5C3.4,3.3,3,3.1,2.6,2.8C3.3,2.1,4.2,1.5,5.3,1.1z M2,3.6 c0.5,0.3,1,0.6,1.5,0.8C3.3,5,3.2,5.6,3.1,6.3c0,0.1,0,0.2,0,0.3H0.9C1,5.4,1.4,4.4,2,3.6z M2,10.4c-0.6-0.9-1-1.9-1.1-3h2.1 c0,0.8,0.2,1.5,0.4,2.2C2.9,9.9,2.5,10.1,2,10.4z M2.6,11.2c0.4-0.3,0.8-0.5,1.2-0.6c0.3,0.8,0.8,1.5,1.4,2.2c0,0,0.1,0.1,0.1,0.1 C4.2,12.5,3.3,11.9,2.6,11.2z M6.5,12.9c-0.2-0.2-0.5-0.5-0.7-0.7c-0.5-0.6-0.9-1.3-1.2-1.9C5.3,10,5.9,9.9,6.5,9.9V12.9z M6.5,9 C5.8,9,5,9.1,4.3,9.4C4.1,8.7,4,8.1,4,7.5h2.6V9z M6.5,6.5H4c0-0.1,0-0.1,0-0.2c0.1-0.6,0.2-1.2,0.3-1.7C5.1,4.9,5.8,5,6.5,5V6.5z M6.5,4.1C5.9,4.1,5.3,4,4.7,3.8c0.4-1,1.1-1.9,1.9-2.6V4.1z M12,3.6c0.6,0.9,1,1.9,1.1,3h-2.2c0-0.8-0.2-1.5-0.4-2.2 C11,4.1,11.5,3.9,12,3.6z M11.3,2.7c0,0,0.1,0.1,0.1,0.1c-0.4,0.3-0.8,0.5-1.2,0.7C9.9,2.7,9.4,2,8.8,1.3C8.8,1.3,8.7,1.2,8.7,1.1 C9.7,1.4,10.6,2,11.3,2.7z M7.5,1.2c0.2,0.2,0.5,0.5,0.7,0.7C8.6,2.5,9,3.1,9.3,3.8C8.7,4,8.1,4.1,7.5,4.1V1.2z M7.5,5 c0.7,0,1.5-0.2,2.2-0.4C9.9,5.3,10,5.9,10,6.5H7.5V5z M7.5,7.5H10c0,0.1,0,0.2,0,0.2c0,0.6-0.2,1.1-0.3,1.7C9,9.1,8.2,9,7.5,9V7.5z M7.5,12.9v-3c0.6,0,1.3,0.1,1.9,0.3C8.9,11.2,8.3,12.1,7.5,12.9z M11.3,11.3c-0.7,0.7-1.6,1.3-2.6,1.5c0.6-0.7,1.1-1.5,1.5-2.3 c0.4,0.2,0.8,0.4,1.2,0.6C11.4,11.2,11.4,11.2,11.3,11.3z M10.5,9.7c0.2-0.6,0.3-1.2,0.4-1.9c0-0.1,0-0.2,0-0.3h2.2 c-0.1,1.1-0.4,2.1-1.1,3C11.5,10.1,11,9.9,10.5,9.7z M7,0C3.1,0,0,3.1,0,7s3.1,7,7,7s7-3.1,7-7S10.9,0,7,0z\'/> </g> </svg>")';
   const $file_icon_ignored =       $svg_icon_prefix + '<path fill=\'%23CCCCCC\' d=\'M7,0C3.1,0,0,3.1,0,7c0,3.9,3.1,7,7,7c3.9,0,7-3.1,7-7C14,3.1,10.9,0,7,0L7,0z\'/><path fill=\'%23EEEEEE\' d=\'M7,2c2.8,0,5,2.2,5,5s-2.2,5-5,5c-2.8,0-5-2.2-5-5S4.2,2,7,2\'/><rect x=\'0.8\' y=\'5.9\' transform=\'matrix(0.7071 -0.7071 0.7071 0.7071 -2.8818 7.0063)\' fill=\'%23CCCCCC\' width=\'12.5\' height=\'2.3\'/></svg>")';
   const $file_icon_ignored_inv =   $svg_icon_prefix + '<path fill=\'%23444444\' d=\'M7,0C3.1,0,0,3.1,0,7c0,3.9,3.1,7,7,7c3.9,0,7-3.1,7-7C14,3.1,10.9,0,7,0L7,0z\'/><path fill=\'%23555555\' d=\'M7,2c2.8,0,5,2.2,5,5s-2.2,5-5,5c-2.8,0-5-2.2-5-5S4.2,2,7,2\'/><rect x=\'0.8\' y=\'5.9\' transform=\'matrix(0.7071 -0.7071 0.7071 0.7071 -2.8818 7.0063)\' fill=\'%23444444\' width=\'12.5\' height=\'2.3\'/></svg>")';
   const $file_icon_invisible =     $svg_icon_prefix + '<g> <polygon fill=\'%23888888\' points=\'8.3,0 1.5,0 1.5,14 12.5,14 12.5,4.2 \'/> <polygon fill=\'%23BBBBBB\' points=\'11,12.5 3,12.5 3,1.5 6.8,1.5 6.8,5.7 11,5.7 \'/> <polygon fill=\'%23BBBBBB\' points=\'8.3,4.2 10.2,4.2 8.3,2.2 \'/> </g> <circle fill=\'%23777777\' cx=\'7\' cy=\'9\' r=\'1\'/> </svg>")';
   //    const $file_icon_video = 'url("data:image/svg+xml;utf8,<svg xmlns=\'http://www.w3.org/2000/svg\' viewBox=\'0 0 100 100\'><style type=\'text/css\'>.st0{fill:%23FFFFFF;}.st1{fill:%23EF6F2E;}</style><rect class=\'st0\' width=\'100\' height=\'100\'/><path class=\'st1\' d=\'M100 100H0V0h100V100zM9.7 90h80.7V10H9.7\'/><path class=\'st1\' d=\'M21 26.4v47.1h58V26.4H21zM31.9 69.9h-7.2v-7.2h7.2V69.9zM31.9 59.1h-7.2v-7.2h7.2V59.1zM31.9 48.2h-7.2v-7.2h7.2V48.2zM31.9 37.3h-7.2v-7.2h7.2V37.3zM42.8 62.7V37.3L60.9 50 42.8 62.7zM75.4 69.9h-7.2v-7.2h7.2V69.9zM75.4 59.1h-7.2v-7.2h7.2V59.1zM75.4 48.2h-7.2v-7.2h7.2V48.2zM75.4 37.3h-7.2v-7.2h7.2V37.3z\'/></svg>")';
   //    const $file_icon_audio = 'url("data:image/svg+xml;utf8,<svg xmlns=\'http://www.w3.org/2000/svg\' viewBox=\'0 0 100 100\'><style type=\'text/css\'>.st0{fill:%23FFFFFF;}.st1{fill:%230E3693;}.st2{fill:%23003399;}</style><rect class=\'st0\' width=\'100\' height=\'100\'/><path class=\'st1\' d=\'M100 100H0V0h100V100zM9.7 90h80.7V10H9.7\'/><polyline class=\'st2\' points=\'32.5 37.5 23.5 37.5 23.5 62.5 32.5 62.5 53.6 77 53.6 23 32.5 37.5 \'/><path class=\'st2\' d=\'M71.9 50c0 6.8-3.7 12.7-9.1 15.8l2.8 4.9c7.1-4.1 11.9-11.8 11.9-20.7 0-8.8-4.8-16.6-11.9-20.7l-2.8 4.9C68.2 37.3 71.9 43.2 71.9 50z\'/><path class=\'st2\' d=\'M62.1 50c0 3.2-1.7 5.9-4.3 7.4l2.7 4.7c4.2-2.4 7-6.9 7-12.1 0-5.2-2.8-9.7-7-12.1l-2.7 4.7C60.4 44.1 62.1 46.8 62.1 50z\'/></svg>")';
   //    const $file_icon_archive = 'url("data:image/svg+xml;utf8,<svg xmlns=\'http://www.w3.org/2000/svg\' viewBox=\'0 0 100 100\'><style type=\'text/css\'>.st0{fill:%23FFFFFF;}.st1{fill:%23D8A13F;}</style><rect class=\'st0\' width=\'100\' height=\'100\'/><path class=\'st1\' d=\'M100 100H0V0h100V100zM9.7 90h80.7V10H9.7\'/><path class=\'st1\' d=\'M72.4 38.5h-7.9v-7.9L72.4 38.5zM51.1 30.6v28.8h21.4v-19h-9.9v-9.9H51.1zM54.4 23H30.8v5.6h9.3l-5.9 4.5v4.8l8.6-6.6v-2.7h30.1v-2.3L54.4 23zM42.9 35.1l-8.6 6.6v4.8l8.6-6.6V35.1zM34.2 55.1l8.6-6.6v-4.8l-8.6 6.6V55.1zM42.9 57.1v-4.8l-8.6 6.6v2.6h-3.4v5.6h5.3v3.8H33c-0.6-1-1.6-1.6-2.8-1.6 -1.8 0-3.2 1.4-3.2 3.2s1.4 3.2 3.2 3.2c1.2 0 2.2-0.6 2.8-1.6h3.1V77h4.8v-2.9H44c0.6 1 1.6 1.6 2.8 1.6 1.8 0 3.2-1.4 3.2-3.2s-1.4-3.2-3.2-3.2c-1.2 0-2.2 0.6-2.8 1.6h-3.1v-3.8h13.5l18.5-3.3v-2.3H37.1L42.9 57.1z\'/></svg>")';
 
 
   // Assemble UI Elements
   function assembleUIElements() {
      $parents_dir_menu.find('div').append( $current_dir_path );
      $sidebar_header.find('thead th').append($toggle_sidebar);
      $sidebar_header.find('tbody tr').first().find('td').first().append( $parent_dir_menu ).next().append( $parents_dir_menu ).next().append( $shortcuts_menu );
      $sidebar_header.find('tbody tr:last-child td').append( $details_btn, $inv_checkbox, $grid_btn );
 
      $dir_list.append($dir_list_head, $dir_list_body);
      $sidebar.append($sidebar_header, $dir_list);
      $sidebar_wrapper.append( $sidebar, $sidebar_overlay, $handle );
 
      $content_image.append( $image );
      $checkbox_cont.append( $loop, $shuffle );
      $content_audio.find('td').append( $prev_track, $next_track, $audio, $close_audio, $checkbox_cont );
//      $content_audio_title.find('td').after( $close_audio );
      $content_title.prepend($content_reload_btn).append($content_close_btn);
      $content_header.find('tbody').append( $content_title, $content_audio_title, $content_audio );
      $content_font.append( $specimen );
      $content_container.append( $content_header, $content_overlay, $content_image, $content_grid, $content_font, $content_pdf, $content_video, $content_iframe, $prev_btn, $next_btn, $content_scale );
      $content_pane.append( $content_container );
   }
   assembleUIElements();
 
   //***** STYLES *****//
 
// DEFINE STYLES
var $styles = '';
 
// background-color
$styles += '#sidebar_wrapper, body.light_theme #sidebar, body.light_theme #sidebar ul, body.light_theme #content_header' +
         '{ background-color: lightgray }';
$styles += 'body.light_theme #dir_list .selected, body.light_theme #dir_list .playing' + //body.light_theme #dir_list .selected.audio,
         '{ background-color: lightsteelblue; }';
$styles += 'body.dark_theme #dir_list .selected' +
         '{ background-color: slategray; }';
$styles += 'body.dark_theme #content_grid, #content_image, body.dark_theme #content_pane' +
         '{ background-color: #333; }';
$styles += 'body.dark_theme #sidebar ul, body.dark_theme #sidebar_header thead, body.dark_theme #sidebar_header tbody tr:first-of-type, body.dark_theme.alternate_background #dir_list tbody tr:nth-of-type(odd):not(.selected)' +
         '{ background-color: #444; }';
$styles += 'body.dark_theme #content_grid:not(.has_grid) .image_grid_item:hover, body.dark_theme #content_grid:not(.has_grid) div.image_grid_item.hovered, body.dark_theme #sidebar, body.dark_theme #content_header, body.dark_theme #dir_list #tbody, body.dark_theme #grid_btn .menu li, body.dark_theme .font_grid_item:hover, body.dark_theme .font_grid_item.hovered, body.dark_theme .image_grid_item:hover, body.dark_theme .image_grid_item.hovered' +
         '{ background-color: #555; }';
$styles += 'body.dark_theme #content_grid:not(.has_grid) .image_grid_item.selected, body.dark_theme #sidebar ul li:hover, body.dark_theme #content_grid .font_grid_item.selected, body.dark_theme #content_grid .image_grid_item.selected' +
         '{ background-color: #666; }';
$styles += 'body.dark_theme #grid_btn .menu li:hover, body.dark_theme #dir_list tbody tr:hover, body.dark_theme #dir_list tbody li:hover, body.dark_theme.alternate_background #dir_list #tbody tr:hover, body.dark_theme #sidebar .hovered, body.dark_theme #content_iframe[href^="/"], body.dark_theme.alternate_background #dir_list #tbody tr:nth-of-type(odd).hovered' +
         '{ background-color: #777; }';
$styles += 'body.light_theme #sidebar_header thead tr, body.light_theme #sidebar_header tbody tr:first-of-type, #parents_dir_menu + ul li:hover, #shortcuts_menu + ul li:not(.has_submenu):hover, #grid_btn.has_images.has_fonts:hover .menu li:hover, body.light_theme #dir_list tbody tr:hover, body.light_theme.alternate_background #dir_list #tbody tr:hover, body.light_theme #dir_list .hovered, body.light_theme.alternate_background #dir_list #tbody tr.hovered' +
         '{ background-color: #BBB; }';
$styles += 'body.light_theme #grid_btn .menu li, body.light_theme #content_grid div.selected, body.light_theme.alternate_background #dir_list tbody tr:nth-of-type(odd):not(.selected)' +
         '{ background-color: #CCC; }';
$styles += 'body.light_theme #content_grid div:hover, body.light_theme #content_grid div.hovered' +
         '{ background-color: #DDD; }';
$styles += 'body.light_theme #dir_list tbody' +
         '{ background-color: #DFDFDF; }';
$styles += 'body.light_theme #content_pane, #content_image .img, body.light_theme #content_grid, #content_font, #content_iframe' +
         '{ background-color: #FFF; }';
// EXCLUDED: Prevent previewed files with these extensions from being inverted in dark mode
for ( let i = 0, n = $row_settings.exclude.length; i < n; i += 1) {
   $styles += 'body.dark_theme #content_iframe[src*="'+ $row_settings.exclude[i] +'" i] { background:#FFF; filter: unset; }';
}
$styles += 'body.dark_theme #content_iframe[src$="/" i]' +
             '{ background:#AAA; filter:unset; }';
$styles += '#scale' +
         '{ background-color: rgba(128,128,128,0.3); }';
$styles += 'body.is_chrome #audio' +
         '{ background-color: rgb(241, 243, 244); }';
$styles += 'body.dark_theme #dir_list .playing, body.dark_theme.alternate_background #dir_list tbody tr.playing:nth-of-type(odd)' + //body.dark_theme #dir_list .selected.audio,
         '{ background-color: #4C7E80; }';
$styles += '#dir_list tbody tr, #dir_list .audio a, #dir_list .video a, body.has_audio #content_pane.has_ignored #content_image, body.light_theme #grid_btn .menu, body.dark_theme #grid_btn .menu, body #dir_list tr.file.audio a.icon, body #dir_list tr.file.video a.icon, body.use_custom_icons #dir_list tr.file.ignore a.icon' +
         '{ background-color: transparent; }';
 
// BACKGROUND SVG IMAGES & ICONS
$styles += '#parent_dir_menu a { background:' + $up_arrow + 'center no-repeat; }';
$styles += '#shortcuts_menu div { background:'+ $menu_icon + 'center no-repeat; }';
$styles += 'body.light_theme #shortcuts > li.has_submenu { background:'+ $menu_arrow +' right no-repeat; background-size: 12px; }';
$styles += 'body.light_theme #shortcuts > li.has_submenu:hover { background:#BBB '+ $menu_arrow +' right no-repeat; background-size: 12px; }';
$styles += 'body.light_theme #shortcuts li.checked span { background:'+ $check_mark +' 4px center no-repeat; background-size:12px; }';
$styles += '#grid_btn { background:'+ $grid_icon +' center no-repeat; }';
$styles += '#toggle_sidebar { background:'+ $toggle +' center no-repeat; background-size:12px; }';
$styles += '#dir_list thead th.checked { background:'+ $check_mark +' 10px 2px no-repeat; background-size:10px; }';
$styles += 'body.light_theme #dir_list thead th.checked:after { background:'+ $up_arrow +' center no-repeat; background-size:10px; }';
$styles += '#dir_list tbody a { background-size:auto 13px; background-position:6px 4px; }';
$styles += 'body.has_audio #content_pane { background-image: ' + $music +'; background-position: center; background-repeat: no-repeat; background-size:33.33%; }';
$styles += '#prev_track, #next_track { background: rgb(241, 243, 244) '+ $next_track_arrow +' center no-repeat; background-blend-mode:difference; }';
$styles += '#prev_track:hover, #next_track:hover, #close_audio:hover { background-blend-mode:normal; }';
$styles += '#close_audio { background:rgb(241, 243, 244); }';
$styles += '#close_audio:after { background:'+ $plus_sign +' center no-repeat; background-blend-mode:difference; background-size:14px; }';
$styles += '#scale span:first-of-type { background:'+ $plus_sign +' center no-repeat; }';
$styles += '#scale span:last-of-type { background:'+ $minus_sign +' center no-repeat; }';
$styles += '#prev_btn, #next_btn { background: ' + $svg_arrow + ' center no-repeat; }';
$styles += 'body #content_pane.has_ignored { background-image:'+ $file_icon_ignored +'; background-position: center; background-repeat: no-repeat; background-size:50%; }';
// Dark theme
$styles += 'body.dark_theme #content_pane.has_ignored { background-image:'+ $file_icon_ignored_inv +'; background-position: center; background-repeat: no-repeat; background-size:50%; }';
$styles += 'body.dark_theme #shortcuts > li.has_submenu { background:'+ $menu_arrow_inv +' right no-repeat; background-size: 12px; }';
$styles += 'body.dark_theme #shortcuts > li.has_submenu:hover { background:#666 '+ $menu_arrow_inv +' right no-repeat; background-size: 12px; }';
$styles += 'body.dark_theme #shortcuts li.checked span { background:'+ $check_mark_inv +' 4px center no-repeat; background-size:12px; }';
$styles += 'body.dark_theme #dir_list thead th.checked { background:'+ $check_mark_inv +' 10px 2px no-repeat; background-size:10px; }';
$styles += 'body.dark_theme #dir_list thead th.checked:after { background:'+ $up_arrow_inv +' center no-repeat; background-size:10px; }';
// Default File Icons
$styles += 'body.use_default_icons #dir_list .dir a.icon { background:'+ $file_icon_dir_default + ' 6px 4px no-repeat; background-size:auto 13px; }';
$styles += 'body.use_default_icons #dir_list .file a.icon { background:'+ $file_icon_file_default + ' 6px 4px no-repeat; background-size:auto 13px; }';
// Custom File Icons
$styles += 'body.use_custom_icons #dir_list tr.file:not(.dir) a.icon { background: '+ $file_icon_file +' 6px 4px no-repeat; background-size:14px 14px; }';
$styles += 'body.use_custom_icons #dir_list tr.file.audio a.icon, body.use_custom_icons #dir_list tr.file.video a.icon { background: transparent; }';
$styles += 'body.use_custom_icons #dir_list tr.file.font a.icon { background: '+ $file_icon_font +' 6px 4px no-repeat; background-size:14px 14px; }';
$styles += 'body.use_custom_icons #dir_list tr.file.image a.icon { background: '+ $file_icon_image +' 6px 4px no-repeat; background-size:14px 14px; }';
$styles += 'body.use_custom_icons #dir_list tr.file.pdf a.icon { background: '+ $file_icon_pdf +' 6px 4px no-repeat; background-size:14px 14px; }';
$styles += 'body.use_custom_icons #dir_list tr.file[class*="htm"] a.icon { background: '+ $file_icon_html +' 6px 4px no-repeat; background-size:14px 14px; }';
$styles += 'body.use_custom_icons #dir_list tr.file.ignore a.icon { background: '+ $file_icon_ignored +' 6px 4px no-repeat; }';
$styles += 'body.use_custom_icons #dir_list tr.file.invisible a.icon { background: '+ $file_icon_invisible +' 6px 4px no-repeat; background-size:14px 14px; }';
$styles += 'body.use_custom_icons #dir_list tr.dir.invisible a.icon { background: '+ $file_icon_dir_invisible +' 6px 4px no-repeat; background-size:14px 14px; }';
$styles += 'body.use_custom_icons #dir_list tr.dir:not(.app) a.icon { background: '+ $file_icon_dir +' 6px 4px no-repeat; background-size:14px 14px; }';
$styles += 'body.use_custom_icons #dir_list tr.app a { background: '+ $file_icon_app +' 6px 4px no-repeat !important; background-size:14px 14px; }';
// Plain text file icons
for ( let i = 0, n = $row_types.text.length; i < n; i += 1) {
   $styles += 'body.use_custom_icons #dir_list tr.file.'+ $row_types.text[i] +' a.icon { background: '+ $file_icon_text +' 6px 4px no-repeat; background-size:14px 14px }';
}
// Code file icons
for ( let i = 0, n = $row_types.code.length; i < n; i += 1) {
   $styles += 'body.use_custom_icons #dir_list tr.file.'+ $row_types.code[i] +' a.icon { background: '+ $file_icon_code +' 6px 4px no-repeat; background-size:14px 14px }';
}
 
// border
$styles += ':root, html, body, #sidebar_wrapper, #sidebar_header, #dir_list, #main_content, #content_pane, #content_pdf, #content_iframe' +
         '{ border: 0 !important; }';
$styles += 'body.dark_theme ul' +
         '{ border: solid 1px #222; }';
$styles += '#details_btn' +
         '{ border: solid 1px #333; }';
$styles += 'body.light_theme #sidebar ul, body.light_theme .image_grid_item img' +
         '{ border: solid 1px gray; }';
// border-top
$styles += 'body.dark_theme #sidebar_header .menu, body.dark_theme #sidebar #grid_btn ul.menu' +
         '{ border-top:solid 1px #111; }';
$styles += 'body.dark_theme #dir_list #tbody' +
         '{ border-top:solid 1px #222; }';
$styles += 'body.light_theme #dir_list tbody, #grid_btn .menu, .font_grid_item:not(:first-of-type), .image_grid_item + .font_grid_item' +
         '{ border-top:solid 1px grey; }';
$styles += '#sort_by' + // , tr.dir ~ tr:not(.dir,.invisible,.ignore)
         '{ border-top:solid 1px #999; }';
$styles += 'body.dark_theme.is_dirs_on_top #dir_list tbody tr.dir + tr.file' +
         '{ border-top:solid 1px #CCC; }';
// border-right
$styles += '#parents_dir_menu + ul, #shortcuts_menu + ul, body.dark_theme #sidebar #grid_btn ul.menu' +
         '{ border-right:0 !important; }';
$styles += 'body.dark_theme #parents_dir_menu, body.dark_theme #sidebar, body.dark_theme #sidebar #grid_btn .menu li' +
         '{ border-right:solid 1px #111; }';
$styles += '#sidebar, body.light_theme #parents_dir_menu, #grid_btn .menu li, .image_grid_item' +
         '{ border-right:solid 1px grey; }';
// border-bottom
$styles += 'body.dark_theme #sidebar_header thead tr, body.dark_theme #sidebar_header tbody tr:first-of-type' +
         '{ border-bottom:solid 1px black; }';
$styles += 'body.dark_theme #sidebar_header .menu, body.dark_theme #content_header, body.dark_theme #sidebar #grid_btn .menu li:first-of-type, body.dark_theme #sidebar #grid_btn ul.menu' +
         '{ border-bottom:solid 1px #111; }';
$styles += 'body.dark_theme #content_header tr:first-of-type' +
         '{ border-bottom:solid 1px #333; }';
$styles += 'body.light_theme #sidebar_header thead tr, body.light_theme #sidebar_header tbody tr:first-of-type, #grid_btn .menu li:first-of-type, #grid_btn .menu, .specimen, .font_grid_item:last-of-type, .image_grid_item' +
         '{ border-bottom:solid 1px grey; }';
$styles += '#content_header tr:first-of-type' +
         '{ border-bottom:solid 1px #888; }';
$styles += '#shortcuts_menu + ul > li.has_submenu.ruled, body.is_dirs_on_top #dir_list tbody tr.sorted:not(:last-of-type), .rule' +
         '{ border-bottom:solid 1px #999; }';
$styles += 'body.light_theme #content_header' +
         '{ border-bottom:solid 1px #AAA; }';
$styles += 'body.dark_theme.is_dirs_on_top #dir_list tbody tr.sorted:not(:last-of-type), body.dark_theme #content_pane.has_font #content_font hr' +
         '{ border-bottom:solid 1px #CCC; }';
// border-left
$styles += '#parents_dir_menu + ul, #shortcuts_menu + ul' +
         '{ border-left:0; }';
$styles += 'body.dark_theme #parents_dir_menu, body.dark_theme #sidebar #grid_btn ul.menu' +
         '{ border-left:solid 1px #111; }';
$styles += 'body.light_theme #parents_dir_menu, #grid_btn .menu' +
         '{ border-left:solid 1px grey; }';
 
// border-collapse
$styles += 'table' +
         '{ border-collapse: collapse; }';
 
// border-radius
$styles += 'html, body, :root' +
         '{ border-radius: 0; }';
$styles += '#details_btn' +
         '{ border-radius: 3px; }';
 
// bottom
$styles += '#handle, #parent_dir_menu, #sidebar_overlay, #content_overlay, #close_audio:after, #content_image, #content_pdf, #content_iframe, #content_grid, #content_font, #prev_btn, #next_btn, #dir_list tbody' +
         '{ bottom: 0; }';
 
// box-shadow
$styles += 'body.light_theme #sidebar ul' +
         '{ box-shadow: 0px 2px 3px -2px #888; }';
$styles += 'body.dark_theme #sidebar ul' +
         '{ box-shadow:0px 2px 3px -2px #111; }';
$styles += 'body.dark_theme #sidebar #grid_btn ul.menu' +
         '{ box-shadow:none; }';
 
// box-sizing
$styles += 'html, body, :root, #sidebar, #grid_btn .menu li' +
         '{ box-sizing: border-box; }';
 
// clear
$styles += '#dir_list tbody .name' +
         '{ clear:right; }';
$styles += '#checkbox_div label, #grid_btn .menu li, #dir_list tbody tr, #content_grid .font_grid_item' +
         '{ clear: both; }';
 
// columns
$styles += '.lorem + .lorem' +
         '{ columns:2; column-gap:2em; }';
$styles += '.lorem + .lorem + .lorem' +
         '{ columns:3; }';
 
// color
$styles += 'body.dark_theme #shortcuts_menu + ul > li > ul, body.dark_theme #shortcuts_menu + ul > li.has_submenu + li:not(.has_submenu), #content_font' +
         '{ color: #111 }';
$styles += '#sidebar, #parents_dir_menu + ul li a, body.light_theme #shortcuts_menu + ul li a, body.light_theme #shortcuts_menu + ul li:not(.disabled) > span, body.light_theme #dir_list th:not(.disabled), #dir_list tbody a, #dir_list .selected a, #dir_list .playing a, #content_header, body.dark_theme #details_btn span, .font_grid_item a, .image_grid_item p' +
         '{ color: #111 }';
$styles += 'body.dark_theme #sidebar_header thead tr, body.dark_theme #sidebar_header tbody tr:first-of-type' +
         '{ color: #444 }';
$styles += '#scale span:hover' +
         '{ color: #666 }';
$styles += '#dir_list tr.ignore a, #dir_list tr.ignore.app a, #dir_list tr.ignore td.details' +
         '{ color: #777 }';
$styles += '#sort_menu .disabled span, #dir_list th.disabled' +
         '{ color: #999 }';
$styles += 'body.dark_theme #dir_list tr.file.ignore a.icon, body.dark_theme #dir_list tr.ignore td.details' +
         '{ color: #BBB }';
$styles += 'body.dark_theme .font_grid_item p, body.dark_theme .font_grid_item a, body.dark_theme .image_grid_item p' +
         '{ color: #DDD }';
$styles += 'body.dark_theme #sidebar th:not(.disabled), body.dark_theme #sidebar td, body.dark_theme #sidebar a, body.dark_theme #content_header tr, body.dark_theme #sidebar tbody tr:first-of-type span' +
         '{ color: #EEE }';
 
// content
$styles += '#dir_list thead th.checked:after, body.has_hidden_sidebar #handle, #dir_list thead th.checked:before, #dir_list thead td.icon, #dir_list tr:empty, #dir_list .audio td.icon, #dir_list .video td.icon, body.hide_invisibles .invisible, body.hide_ignored .ignore, body.use_custom_icons #dir_list tr.file.ignore a.icon::before, #close_audio:after' +
         '{ content:"" }';
$styles += 'body.dark_theme #dir_list thead th.checked:after' +
         '{ content:" " }';
$styles += '#content_pane.has_audio #content_audio_title td:before, body #content_pane.has_video #title:before' +
         '{ content:"Playing: " }'; // .audio, .video
$styles += '#content_pane.has_dir:not(.has_grid) #title:before' +
         '{ content:"Index of: " }'; // .dir
$styles += '#content_pane.has_grid:not(.has_ignored) #title:before' +
         '{ content:"Fonts and Images from: " }'; // font and image grid
$styles += 'body:not(.has_images) #content_pane.has_grid:not(.has_ignored) #title:before, #content_pane.has_grid #title.font_grid:before' +
         '{ content:"Fonts from: " }'; // font grid
$styles += 'body:not(.has_fonts) #content_pane.has_grid:not(.has_ignored) #title:before, #content_pane.has_grid #title.image_grid:before' +
         '{ content:"Images from: " }'; // image grid
$styles += '#content_pane.has_ignored:not(.has_grid) #title:before' +
         '{ content:"Ignored content: " }'; // .ignored
 
// cursor
$styles += '#sidebar_header thead th, #sort_menu .disabled span, #dir_list .disabled' +
         '{ cursor: default; }';
$styles += '#sidebar_header tbody tr:first-of-type td:hover, #parents_dir_menu div, #shortcuts_menu div, #grid_btn, #dir_list thead th, #scale span' +
         '{ cursor: pointer; }';
$styles += '#handle' +
         '{ cursor: col-resize; }';
$styles += '#content_image img:not(.zoom_img)' +
         '{ cursor: zoom-in; }';
$styles += '#content_image img.zoom_img' +
         '{ cursor: zoom-out; }';
 
// display
$styles += '#sidebar tbody tr:first-of-type ul, #light_theme, #details_btn span:last-of-type, #grid_btn, #grid_btn:not(:hover) .menu, #dir_list thead .name input, #dir_list .details, body.has_hidden_sidebar #handle, #dir_list thead th.checked:before, #dir_list thead td.icon, #dir_list tr td:not(.name), body.has_hidden_sidebar #dir_list tr td, #dir_list tr:empty, #dir_list tr.audio td.icon, #dir_list tr.video td.icon, body.hide_invisibles #tbody tr.invisible, body.hide_ignored #tbody tr.ignore, #sidebar_overlay, #content_overlay, #content_title:before, #content_header, #content_audio_title, #content_audio td, #content_pane section header ~ *[id^="content"], .nav_btn, #content_grid, #content_pane.has_hidden_grid #content_grid, #scale, body.light_theme #dark_theme, body.dark_theme #light_theme, body.use_custom_icons #dir_list img, #dir_list tr.file.audio a img, #dir_list tr.file.video a img' +
         '{ display: none; }';
$styles += '#sidebar li, #parent_dir_menu, #parent_dir_menu a, #parents_dir_menu + ul li a, #shortcuts_menu + ul li a, #shortcuts_menu + ul li > span, #shortcuts_menu + ul > li:hover > ul, #shortcuts_menu + ul > li > ul:hover, #default, #dir_list tbody a, #content_pane[class^="has_"] #content_header, #content_pane[class^="has_"]:hover #scale, #content_pane.has_font #content_font, #content_pane.has_image #content_image, #content_pane.has_pdf #content_pdf, #content_pane.has_video #content_video, #content_pane.has_iframe #content_iframe, #content_pane.has_dir #content_iframe, #content_pane.has_grid #content_grid.has_grid, #content_pane.has_grid #content_grid.has_font_grid, .font_grid_item, .image_grid_item a, #content_pane.has_grid .nav_btn, #content_pane.has_font .nav_btn, #content_pane.has_image .nav_btn, #scale span, #checkbox_div label, body.dark_theme #dark_theme, body.light_theme #light_theme, body.use_custom_icons #dir_list tr.file.ignore a.icon::before, body:not(.has_hidden_sidebar) #dir_list .name' +
         '{ display: block; }';
$styles += 'body.has_images.has_fonts #grid_btn:hover ul.menu' +
         '{ display:block !important; }';
$styles += '#parents_dir_menu div, body.has_fonts #grid_btn, body.has_images #grid_btn, #dir_list thead th.checked:after, #dir_list.show_details th:not(.name), #dir_list.show_details td:not(.name):not(.ext), body.has_audio #dir_list thead input, #content_grid .image_grid_item, #checkbox_div, #prev_track, #next_track, #close_audio, body.dark_theme #dir_list thead th.checked:after, #content_pane[class^="has_"] #content_container' +
         '{ display: inline-block; }';
$styles += '#content_pane.has_audio #content_audio_title, #content_pane.has_audio #content_audio' +
         '{ display: table-row !important; }';
$styles += '#shortcuts_menu div, #content_pane[class^="has"] #title, #content_pane[class^="has"] #content_header, #content_pane.has_audio #content_audio td' +
         '{ display: table-cell !important; }';
$styles += '#content_pane.has_grid #content_grid.has_image_grid' +
         '{ display: grid !important; }';
$styles += '#content_grid.has_image_grid' +
         '{ grid-gap:0; grid-template-columns:repeat(auto-fill, minmax(200px, 1fr)); align-content: start; }';
$styles += '#thead, #theader, body[class^="is_default"] #tbody tr, body[class^="is_converted"] #tbody tr, body.show_invisibles #tbody tr, body.hide_invisibles #tbody tr:not(.invisible)' +
         '{ display: table; }'; // needed to make rows full width and dir_list scrollable
 
// filter
$styles += '#prev_btn, #next_btn' +
         '{ filter:invert(50%); }';
$styles += 'body.dark_theme #content_iframe, body.dark_theme #content_font' +
         '{ filter:invert(87.5%); }';
$styles += '#scale span:hover, body.dark_theme #sidebar #grid_btn, body.dark_theme #grid_btn .menu, body.dark_theme #parent_dir_menu, body.dark_theme #shortcuts_menu, body.dark_theme #toggle_sidebar' +
         '{ filter:invert(100%); }';
 
// float
$styles += '#content_header tr:first-of-type td:first-of-type, #checkbox_div label' +
         '{ float: left; }';
$styles += '#grid_btn, #content_header tr:first-of-type td:last-of-type' +
         '{ float: right; }';
 
// font-family
$styles += 'html, body, :root' +
         '{ font-family:'+ $settings.UI_font +', arial, "fira sans", helvetica, sans-serif; }';
 
// font-size
$styles += 'html' +
         '{ font-size: 100.001%; }';
$styles += 'body, :root' +
         '{ font-size:'+ $settings.UI_font_size +'; }';
$styles += '#sidebar, #sidebar_header, #sidebar_header thead th, #dir_list, #dir_list .details, #content_header, #content_header table' +
         '{ font-size: 0.875rem; }';
$styles += '#content_grid, .font_grid_item p' +
         '{ font-size: 1rem; }';
$styles += '#scale span' +
         '{ font-size: 2rem; }';
$styles += '#content_grid .font_grid_item h2' +
         '{ font-size:'+ $grid_font_size * 4 +'em; }';
$styles += '#content_font' +
         '{ font-size:'+ $grid_font_size +'em; }';
$styles += '.lorem.first:first-line' +
         '{ font-size:'+ $grid_font_size*1.33 +'em; }';
 
// font-variant
$styles += '.lorem.first:first-line' +
         '{ font-variant: small-caps }';
 
// font-weight
$styles += '#sidebar_header thead th, h2' +
         '{ font-weight: normal }';
$styles += '#dir_list .selected a, #dir_list .playing a' +
         '{ font-weight: bold }';
 
// height
$styles += 'html, body, :root, #parent_dir_menu a, #content_container, #main_content, #content_pdf, #content_iframe, .image_grid_item a' +
         '{ height: 100%; }';
$styles += '#sidebar_header, #parents_dir_menu, #parents_dir_menu div, #content_grid div img, #content_image img:not(.zoom_img)' +
         '{ height: auto; }';
$styles += '#dir_list thead th.checked:after' +
         '{ height: 8px; }';
$styles += '#toggle_sidebar' +
         '{ height: 14px; }';
$styles += '#dir_list td.icon' +
         '{ height: 16px; }';
$styles += '#grid_btn, body.use_custom_icons #dir_list tr.file.ignore a.icon::before' +
         '{ height: 18px; }';
$styles += '#audio' +
         '{ height: 32px; }';
$styles += 'body.dark_theme #dir_list thead th.checked:after' +
         '{ height: 1em; }';
$styles += '#scale span' +
         '{ height: 2rem; }';
$styles += '#content_grid.has_grid .image_grid_item' +
         '{ height: '+ $grid_image_size +'px; }';
$styles += '#sidebar' +
         '{ height:'+ window.innerHeight +'px; }';
$styles += '#sidebar_overlay, #content_overlay' +
         '{ height:'+ window.innerHeight + 'px; }';
// max-height
$styles += '#content_image img.zoom_img' +
         '{ max-height: none; }';
$styles += '#content_grid div img' +
         '{ max-height:'+ ($grid_image_size - $grid_image_size/8) +'px; }';
$styles += '#content_image img:not(.zoom_img)' +
         '{ max-height:calc(100% - 3px); }';
// min-height
$styles += '#sidebar' +
         '{ min-height: 100%; }';
 
// hyphens
$styles += '#parents_dir_menu div, #content_header td button, #content_font' +
         '{ hyphens: none; }';
$styles += 'html, body, :root, .lorem' +
         '{ hyphens: auto; }';
 
// left
$styles += '#sidebar ul, #parent_dir_menu, #dir_list thead, #dir_list tbody, #sidebar_overlay, #content_overlay, #close_audio:after, #content_header, #content_image, #content_pdf, #content_iframe, #content_grid, #content_font, body.use_custom_icons #dir_list tr.file.ignore a.icon::before, body.has_hidden_sidebar #toggle_sidebar' +
         '{ left: 0; }';
$styles += '#sidebar #grid_btn ul.menu' +
         '{ left: unset; }';
$styles += 'body.has_hidden_sidebar #sidebar_wrapper' +
         '{ left: 3px; }';
$styles += '#shortcuts_menu + ul > li > ul' +
         '{ left: 100%; }';
 
// letter-spacing
$styles += '.lorem.first:first-line, .font_grid_item p' +
         '{ letter-spacing: 0.1em }';
$styles += '#sidebar_header thead th' +
         '{ letter-spacing: 0.5em }';
 
// line-height
$styles += '.font_grid_item p' +
         '{ line-height: 1 }';
$styles += '#dir_list tr a, .lorem' +
         '{ line-height: 1.4 }';
 
// list-style
$styles += '#sidebar ul, #grid_btn .menu li' +
         '{ list-style-type: none; }';
 
// margin
$styles += 'html, body, :root, #sidebar ul, #parent_dir_menu, #parent_dir_menu, #parents_dir_menu, #parents_dir_menu + ul li a, #shortcuts_menu + ul li a, #shortcuts_menu + ul li > span, #shortcuts_menu, #grid_btn, #dir_list tbody a, #content_grid p, #content_grid  h2' +
         '{ margin: 0; }';
// margin-top
$styles += '.image_grid_item + .font_grid_item' +
         '{ margin-top:-1px; }';
$styles += '#checkbox_div label input, #details_btn' +
         '{ margin-top: 0; }';
$styles += 'body.has_audio #dir_list input' +
         '{ margin-top: 1px; }';
// margin-right
$styles += '#content_video' +
         '{ margin-right: auto; }';
$styles += '#dir_list thead th.checked' +
         '{ margin-right: 0; }';
$styles += 'body.has_audio #dir_list input' +
         '{ margin-right: 8px; }';
$styles += '#details_btn' +
         '{ margin-right: 0.5em; }';
$styles += '#dir_list thead th:last-of-type' +
         '{ margin-right: 1em; }';
$styles += '#checkbox_div' +
         '{ margin-right: calc(-6em - 4px); }';
// margin-bottom
$styles += '#details_btn' +
         '{ margin-bottom: 0; }';
$styles += 'body.has_audio #dir_list input' +
         '{ margin-bottom: 1px; }';
// margin-left
$styles += '#content_video' +
         '{ margin-left: auto; }';
$styles += '#dir_list thead th.checked' +
         '{ margin-left: 0; }';
$styles += 'body.has_hidden_sidebar #reload_btn' +
         '{ margin-left: 16pt; }';
$styles += '#details_btn' +
         '{ margin-left: 0.5em; }';
$styles += '#dir_list tbody tr' +
         '{ margin-inline-start:0; }';
// -webkit-margin
$styles += '#sidebar ul' +
         '{ -webkit-margin-before:0em !important;  -webkit-margin-after:0em !important; -webkit-padding-start:0em; }';
 
// opacity
$styles += '#content_pane #scale' +
         '{ opacity:0; }';
$styles += '#scale span:first-of-type, #scale span:last-of-type, #content_pane.has_ignored:before, #close_audio::after' +
         '{ opacity:0.3; }';
$styles += '#scale span:hover' +
         '{ opacity:0.5; }';
$styles += '#prev_btn, #next_btn, #close_audio:hover::after' +
         '{ opacity:0.6; }';
$styles += '#sidebar_header tbody tr:first-of-type td:last-of-type:hover > div, #shortcuts_menu div, #shortcuts_menu div, #parent_dir_menu, #prev_btn, #next_btn, #toggle_sidebar, body.use_custom_icons #dir_list tr.file.ignore a.icon::before' +
         '{ opacity: 0.7; }';
$styles += '#content_grid div img' +
         '{ opacity:0.8; }';
$styles += '#grid_btn:hover, #parent_dir_menu:hover, #prev_btn:hover, #next_btn:hover, #toggle_sidebar:hover, #content_pane.has_grid:hover #scale, #content_pane.has_font:hover #content_font ~ #scale, #content_pane.has_image:hover #content_image ~ #scale' +
         '{ opacity:1; }';
 
// outline
$styles += '#grid_btn, #dir_list tbody, #dir_list tbody a, #content_grid .font_grid_item, #content_font' +
         '{ outline: none; }';
 
// overflow
$styles += '#content_container' +
         '{ overflow: visible; }';
$styles += 'html, body, :root, #parents_dir_menu div, #shortcuts_menu, #dir_list, #dir_list tbody a, #main_content, #close_audio' +
         '{ overflow: hidden; }';
$styles += '#content_font, #content_grid, #content_image' +
         '{ overflow: auto; }';
$styles += '#dir_list tbody' +
         '{ overflow-y: auto; }';
$styles += '#sidebar, #content_font' +
         '{ overflow-wrap: break-word; }';
$styles += '.lorem' +
         '{ overflow-wrap: normal; }';
 
// padding
$styles += 'html, body, :root, #sidebar_wrapper, #sidebar ul, #parent_dir_menu, #sidebar_header tbody tr td, #parent_dir_menu, #parent_dir_menu a, #parents_dir_menu, #shortcuts_menu, #dir_list .details a, #content_pane, #content_pdf, #content_iframe,  audio::-webkit-media-controls-panel' +
         '{ padding: 0; }';
$styles += '#sidebar_header thead th' +
         '{ padding: 4px; }';
$styles += '.image_grid_item' +
         '{ padding:6px; }';
// padding-top
$styles += '#dir_list thead th, #dir_list .details, #prev_track, #next_track, #close_audio' +
         '{ padding-top: 0; }';
$styles += '#details_btn, #prev_btn, #next_btn' +
         '{ padding-top: 2px; }';
$styles += '#parents_dir_menu div, #grid_btn .menu li, #dir_list tbody a, #content_header tr:first-of-type td:first-of-type, #content_header tr:first-of-type td:last-of-type, #title, body #content_audio_title td, #content_audio td' +
         '{ padding-top: 4px; }';
$styles += '#sidebar_header tbody tr:last-of-type td, #parents_dir_menu + ul li a, #shortcuts_menu + ul li a, #shortcuts_menu + ul li > span, #shortcuts_menu + ul li div span' +
         '{ padding-top: 6px; }';
$styles += '#content_header table' +
         '{ padding-top: 7px; }';
$styles += '#content_grid .font_grid_item, .font_grid_item p' +
         '{ padding-top: 0.5rem; }';
$styles += '#content_image, #content_font div' +
         '{ padding-top: 2rem; }';
// padding-right
$styles += '#sidebar_header tbody tr:last-of-type td, #dir_list .details, #prev_track, #next_track, #close_audio' +
         '{ padding-right: 0; }';
$styles += '#parents_dir_menu div, #details_btn, #grid_btn .menu li, #dir_list tbody a, #content_header tr:first-of-type td:first-of-type, #content_header tr:first-of-type td:last-of-type, #content_audio td, #close_audio' +
         '{ padding-right: 6px; }';
$styles += '#parents_dir_menu + ul li a, #shortcuts_menu + ul li a, #shortcuts_menu + ul li > span, #shortcuts_menu + ul li div span' +
         '{ padding-right: 8px; }';
$styles += '#dir_list tbody tr, #content_header table, #title, #prev_btn, #next_btn' +
         '{ padding-right: 12px; }';
$styles += '#grid_btn .menu, #dir_list thead th, #content_audio_title td' +
         '{ padding-right: 29px; }';
$styles += '#content_grid .font_grid_item, #content_image, #content_font div' +
         '{ padding-right: 2.5rem; }';
// padding-bottom
$styles += '#prev_track, #next_track, #close_audio, #prev_btn, #next_btn' +
         '{ padding-bottom: 0px }';
$styles += '#details_btn, body.is_dirs_on_top #dir_list tbody tr.sorted:not(:last-of-type)' +
         '{ padding-bottom: 2px; }';
$styles += '#title, body #content_audio_title td' +
         '{ padding-bottom: 3px;}';
$styles += '#parents_dir_menu div, #grid_btn .menu li, #dir_list tbody a, #dir_list .details' +
         '{ padding-bottom: 4px; }';
$styles += '.specimen, .font_grid_item p' +
         '{ padding-bottom: 0.25em; }';
$styles += '#content_header tr:first-of-type td:first-of-type, #content_header tr:first-of-type td:last-of-type' +
         '{ padding-bottom: 3px; }';
$styles += '#content_header table' +
         '{ padding-bottom: 5px; }';
$styles += '#sidebar_header tbody tr:last-of-type td, #parents_dir_menu + ul li a, #shortcuts_menu + ul li a, #shortcuts_menu + ul li > span, #shortcuts_menu + ul li div span, #dir_list thead th, #content_audio td' +
         '{ padding-bottom: 6px; }';
$styles += '#dir_list thead th.details' +
         '{ padding-bottom: 9px; }';
$styles += '#content_grid .font_grid_item' +
         '{ padding-bottom: 0.5rem; }';
$styles += '#content_grid.has_image_grid' +
         '{ padding-bottom: 1rem; }';
$styles += '#content_image, #content_font div:first-of-type' +
         '{ padding-bottom: 2rem; }';
// padding-left
$styles += '#grid_btn .menu, #sidebar_header tbody tr:last-of-type td' +
         '{ padding-left: 0; }';
$styles += '#dir_list .audio a, #dir_list .video a, #checkbox_div' +
         '{ padding-left: 4px; }';
$styles += '#parents_dir_menu div, #dir_list td.icon, #dir_list .icon + td.name a, #checkbox_div #parents_dir_menu div, #details_btn, #grid_btn .menu li, #content_header tr:first-of-type td:first-of-type, #content_header tr:first-of-type td:last-of-type, #content_audio td, #prev_track' +
         '{ padding-left: 6px; }';
$styles += '#parents_dir_menu + ul li a, #shortcuts_menu + ul li a, #shortcuts_menu + ul li > span, #shortcuts_menu + ul li div span' +
         '{ padding-left: 8px; }';
$styles += '#content_header table, #dir_list td.size, #title, #prev_btn, #next_btn' +
         '{ padding-left: 12px; }';
$styles += '#dir_list thead th, #dir_list .details, #dir_list td.date' +
         '{ padding-left: 24px; }';
$styles += '#dir_list tbody a' +
         '{ padding-left: 27px; -webkit-padding-start: 27px; }';
$styles += '#content_audio_title td' +
         '{ padding-left: 29px; }';
$styles += '#sort_menu li span, #dir_list thead .name, #default' +
         '{ padding-left: 2em; }';
$styles += '#content_grid .font_grid_item, #content_image, #content_font div' +
         '{ padding-left: 2.5rem; }';
//-webkit-padding
$styles += '#dir_list .icon + td.name a' +
         '{ -webkit-padding-start:1em; }';
 
// position
$styles += '#sidebar_wrapper, #sidebar_header, #sidebar_header tbody tr, #sidebar_header tbody tr:first-of-type td:first-of-type, #sidebar_header tbody tr:last-of-type td, #dir_list, #dir_list thead, #dir_list thead th.checked ,#dir_list tr.ignore a, #dir_list tr.ignore.app a, #dir_list tr.ignore td.details, #shortcuts_menu + ul > li.has_submenu, #content_pane, #close_audio, #content_grid div img, #content_image img:not(.zoom_img)' +
         '{ position: relative; }';
$styles += '#sidebar ul, #handle, #parent_dir_menu, #toggle_sidebar, body.has_hidden_sidebar #sidebar_wrapper, #dir_list tbody, #dir_list thead th.checked:after, #sidebar_overlay, #content_overlay, #content_header, #close_audio:after, #content_grid, #content_image, #content_font, #content_pdf, #content_iframe, #scale, #prev_btn, #next_btn, body.use_custom_icons #dir_list tr.file.ignore a.icon::before' +
         '{ position: absolute; }';
 
// right
$styles += '#sidebar ul, #parent_dir_menu, #grid_btn .menu, #dir_list thead, #dir_list tbody, #sidebar_overlay, #content_overlay, #close_audio:after, #content_header, #content_image, #content_pdf, #content_iframe, #content_grid, #content_font, #next_btn' +
         '{ right: 0; }';
$styles += '#toggle_sidebar' +
         '{ right: 4px; }';
$styles += '#handle' +
         '{ right: -4px; }';
$styles += '#scale' +
         '{ right: 1rem; }';
 
// table-layout
$styles += '#dir_list' +
         '{ table-layout: fixed; }';
 
// text-align
$styles += '#sidebar ul, #dir_list thead, #dir_list tbody, #dir_list tbody .name, #dir_list .details, #content_header tr:first-of-type td:first-of-type, #content_grid, #content_grid .font_grid_item, .specimen' +
         '{ text-align: left; }';
$styles += '#parent_dir_menu a, #parents_dir_menu, #parents_dir_menu div, #shortcuts_menu div, #content_header, #title, #content_grid .image_grid_item, #content_image, #content_audio_title, #content_audio td, #scale span' +
         '{ text-align: center; }';
$styles += '#grid_btn .menu li, #dir_list .size, #dir_list .date, #content_header tr:first-of-type td:last-of-type' +
         '{ text-align: right; }';
$styles += '.lorem' +
         '{ text-align: justify; }';
 
// text-decoration
$styles += 'a, a:hover' +
         '{ text-decoration: none !important; }';
 
// text-indent
$styles += '#shortcuts li' +
         '{ text-indent: 1em; }';
 
// text-transform
$styles += '.font_grid_item p' +
         '{ text-transform: uppercase; }';
 
// top
$styles += '#handle, #parent_dir_menu, #content_container, #sidebar_overlay, #content_overlay, #content_header, #close_audio:after, #content_image, #content_image img.zoom_img, #content_pdf, #content_iframe, #prev_btn, #next_btn, body.use_custom_icons #dir_list tr.file.ignore a.icon::before' +
         '{ top: 0; }';
$styles += '#shortcuts_menu + ul > li > ul, body.light_theme #grid_btn .menu' +
         '{ top: -1px !important; }';
$styles += 'body.has_hidden_sidebar #sidebar_wrapper, #dir_list thead th.checked:after' +
         '{ top: 2px; }';
$styles += '#toggle_sidebar' +
         '{ top: 4px; }';
$styles += 'body.dark_theme #grid_btn .menu' +
         '{ top: -7px; }';
$styles += '#content_grid div img, #content_image img:not(.zoom_img), .vert_center' +
         '{ top: 50%; }';
 
// transform
$styles += 'body.has_hidden_sidebar #toggle_sidebar, #dir_list thead th.checked:not(.up):after, #next_track, #next_btn' +
         '{ transform:rotate(180deg); }';
$styles += '#close_audio:after' +
         '{ transform:rotate(45deg); }';
$styles += '.vert_center' +
         '{ transform:translateY(50%); }';
$styles += '#content_grid div img, #content_image img:not(.zoom_img)' +
         '{ transform:translateY(-50%); }';
$styles += '#content_image img.zoom_img' +
         '{ transform:translateY(0); }';
 
// transition
$styles += '#scale' +
         '{ transition:opacity 1s ease-in-out; }';
 
// user-select
$styles += '#sidebar_header, #content_image img:not(.zoom_img)' +
         '{ user-select:none; -webkit-user-select:none; }';
 
// vertical-align
$styles += '#dir_list .details' +
         '{ vertical-align: top }';
$styles += '#sidebar_header tbody tr:last-of-type td, #parent_dir_menu a, #parents_dir_menu div, #shortcuts_menu div, #content_header tr:first-of-type td:first-of-type, #content_header tr:first-of-type td:last-of-type, #title, #content_grid .image_grid_item' +
         '{ vertical-align:middle; }';
 
// white-space
$styles += '#sidebar_header tbody tr:last-of-type td, #parents_dir_menu div, #parents_dir_menu + ul li a, #shortcuts_menu + ul li a, #shortcuts_menu + ul li > span, #dir_list tbody a, .specimen, .lorem' +
         '{ white-space: normal; }';
$styles += '#grid_btn .menu li' +
         '{ white-space: pre; }';
$styles += '#dir_list thead' +
         '{ white-space: pre-wrap; }';
 
// width
$styles += 'html, body, :root, table, #sidebar_header tbody tr:first-of-type td:nth-of-type(even), #parent_dir_menu a, #dir_list thead, #tbody, #tbody tr, #shortcuts_menu + ul > li > ul, #grid_btn .menu li, body.has_hidden_sidebar #content_pane, #content_container, #content_header, #content_pdf, #content_iframe' +
         '{ width: 100%; }';
$styles += '#content_grid, #content_grid div img, #content_image img:not(.zoom_img)' +
         '{ width: auto; }';
$styles += '#handle' +
         '{ width: 8px; }';
$styles += '#toggle_sidebar' +
         '{ width: 16px; }';
$styles += 'body.use_custom_icons #dir_list tr.file.ignore a.icon::before' +
         '{ width: 20px; }';
$styles += '#sidebar_header tbody tr:first-of-type td:nth-of-type(odd)' +
         '{ width: 24px; }';
$styles += '#grid_btn' +
         '{ width: 28px; }';
$styles += '#dir_list thead th.checked:after, #prev_track, #next_track, #close_audio, #scale span' +
         '{ width: 2rem; }';
$styles += '#shortcuts_menu div, #content_header tr:first-of-type td:first-of-type, #content_header tr:first-of-type td:last-of-type, #checkbox_div' +
         '{ width: 6em; }';
$styles += 'body.has_hidden_sidebar #sidebar_wrapper' +
         '{ width: 0 !important; }';
$styles += '#dir_list .size, #dir_list .kind' +
         '{ width: 16%; }';
$styles += '#dir_list .date' +
         '{ width: 30%; }';
$styles += '#content_grid.has_grid .image_grid_item' +
         '{ width: '+ $grid_image_size +'px; }';
$styles += 'body.has_hidden_sidebar #content_pane' +
         '{ width: 100% !important; }';
$styles += 'body:not(.has_hidden_sidebar) #sidebar_wrapper' +
         '{ width:'+ $UI_pref_width +'%; }';
$styles += '#content_pane' +
         '{ width:'+ (100 - $UI_pref_width).toString() +'%; }';
$styles += '#content_grid .font_grid_item' +
         '{ width:calc(100% - 5rem); }';
// max-width
$styles += 'html, body, :root, #content_image img:not(.zoom_img)' +
         '{ max-width: 100%; }';
$styles += '#content_image img.zoom_img' +
         '{ max-width: none; }';
$styles += '#sidebar_header tbody tr:first-of-type td:nth-of-type(odd)' +
         '{ max-width: 24px; }';
$styles += '#content_grid div img' +
         '{ max-width:'+ ($grid_image_size - $grid_image_size/8) +'px; }';
// min-width
$styles += 'body:not(.has_hidden_sidebar) #sidebar_header tbody tr:first-of-type td:nth-of-type(odd)' +
         '{ min-width: 24px; }';
$styles += '#dir_list .size, #dir_list .kind' +
         '{ min-width: 5em; }';
$styles += '#dir_list td.date' +
         '{ min-width: 12em; }';
$styles += 'body:not(.has_hidden_sidebar) #dir_list' +
         '{ min-width: 100px; }';
$styles += 'body:not(.has_hidden_sidebar) #sidebar_wrapper' +
         '{ min-width: 220px; }';
 
// will-change
$styles += '#sidebar_wrapper, #content_pane' +
         '{ will-change: width }';
 
// word-break
$styles += '#content_header td button' +
         '{ word-break: none; }';
$styles += '#title' +
         '{ word-break: break-word; }';
$styles += '#content_font' +
         '{ word-break: break-all; }';
$styles += '.lorem' +
         '{ word-break: normal; }';
 
// z-index
$styles += '#content_grid' +
         '{ z-index: -1; }';
$styles += '#content_pane.has_grid #content_grid' +
         '{ z-index: 1; }';
$styles += '#scale, #prev_btn, #next_btn' +
         '{ z-index: 10; }';
$styles += '#parents_dir_menu + ul, #content_header' +
         '{ z-index: 20; }';
$styles += '#handle' +
         '{ z-index: 1000; }';
$styles += '#sidebar_header' +
         '{ z-index: 2000; }';
$styles += '#shortcuts_menu + ul, #toggle_sidebar, #sidebar_overlay, #content_overlay' +
         '{ z-index: 9999; }';
$styles += 'body.has_hidden_sidebar #sidebar_header' +
         '{ z-index:unset; }';
 
// Gecko Styles:
var $gecko_styles = '';
 
$gecko_styles += 'html, body.is_gecko { border: solid 1px gray !important; }';
$gecko_styles += 'body.is_gecko button { padding:0; }';
$gecko_styles += 'body.is_gecko #grid_btn .menu { top:-7px; left:-120px; }';
$gecko_styles += 'body.is_gecko thead {font-size:100%;}';
$gecko_styles += 'body.is_gecko #dir_list th, body.is_gecko #dir_list td {width:auto;}';
$gecko_styles += 'body.is_gecko #dir_list .dir::before {position:absolute;}';
$gecko_styles += 'body.is_gecko.use_default_icons:not(.is_converted_list) #dir_list .file .name .icon { padding-left:4px; background:none; }';
$gecko_styles += 'body.is_gecko.use_default_icons #dir_list .file .name .icon img { margin-right:6px; height:14px; }';
$gecko_styles += 'body.is_gecko #tbody > tr > td:not(:first-of-type) { float:left }';
$gecko_styles += 'body.is_gecko #content_audio_title td { padding-top: 6px; }';
$gecko_styles += 'body.is_gecko #content_audio_title td { padding-bottom: 0; }';
$gecko_styles += 'body.is_gecko #prev_track { padding-left: 16px; }';
$gecko_styles += 'body.is_gecko #close_audio { background-color: #252525; }';
$gecko_styles += 'body.is_gecko #close_audio:after { filter:invert(100%); opacity:0.5; }';
$gecko_styles += 'body.is_gecko #close_audio:hover:after { opacity:0.75; }';
$gecko_styles += 'body.is_gecko.dark_theme #prev_track, body.is_gecko.dark_theme #next_track { background: #252525  '+ $next_track_arrow_gecko +' center no-repeat; }';
$gecko_styles += 'body.is_gecko #prev_track:hover, body.is_gecko #next_track:hover { background: #252525  '+ $next_track_arrow_gecko_hover +' center no-repeat; }';
$gecko_styles += 'body.is_gecko #content_title td:first-of-type, body.is_gecko #content_title td:last-of-type { padding-top:8px; }';
 
   // ADD STYLES
   const $font_preview_styles = document.createElement('style');
   const $custom_styles = document.createElement("style");
   const $custom_gecko_styles = document.createElement("style");
 
   function addStyles() {
      // for font previews
      $font_preview_styles.appendChild(document.createTextNode(""));
      document.head.append($font_preview_styles);
      var $font_styles = '';
      $font_preview_styles.append( $font_styles );
      // basic UI styles
      $custom_styles.appendChild(document.createTextNode(""));
      $custom_styles.append($styles);
      document.head.appendChild($custom_styles);
      // Gecko styles
      if ( $userAgent.indexOf('Firefox') > -1 ) {
         $custom_gecko_styles.appendChild(document.createTextNode(""));
         $custom_gecko_styles.append($gecko_styles);
         document.head.appendChild($custom_gecko_styles);
      }
   }
   addStyles();
   // ***** END STYLES ***** //
 
   // ***** BUILD MENUS ***** //
   var $paths_arr = [];
   const parentLinksArr = function() { // create array of parent links from $location w/o query string
      let $path = $location; // https://www.example.com/path/to/my/dir/
       while ( $path.lastIndexOf('/') > 0 && !$path.endsWith(':/') ) {
           $path = $path.slice( 0,$path.lastIndexOf('/') );
           $paths_arr.push($path);
       }
       $paths_arr.pop(); // remove last element
      return $paths_arr;
   };
   parentLinksArr();
 
   // MENUS: Create menu list items
   var $menu_item;
   const menuItems = function(x,y,i,b) { // (link, name, count, boolean)
      let $qstr = '/?';
      if ( b === true ) { // don't include query string in link
         $qstr = '';
         $query_prefs = '';
      }
      $menu_item = '<li><a href="'+ x[i] + $qstr + $query_prefs +'">' + y[i] + '/</a></li>';
      return $menu_item;
   };
	// Parent directory link setup
   var $parent_dir_link;
   function setParentLink() {
      let $query_prefs = new URLSearchParams( window.location.search );
      $query_prefs.delete('file');
 
      $UI_pref_history_arr = $query_prefs.get('history') !== null ? $query_prefs.get('history').split(' ') : [];
 
      if ( $UI_pref_history_arr.length == 1 ) {
         $query_prefs.set('selected',$UI_pref_history_arr.shift(0));
         $query_prefs.delete('history');
      } else if ( $UI_pref_history_arr.length > 1 ) {
         $query_prefs.set('selected',$UI_pref_history_arr.shift(0));
         $query_prefs.set('history',$UI_pref_history_arr.join('+'));
      } else {
         $query_prefs.delete('selected');
      }
      let $qstr = $query_prefs.toString().length == 0 ? '' : '?';
      $query_prefs.sort();
      $parent_dir_link = $location_arr.slice(0,-2).join('/') + '/' + $qstr + decodeURIComponent($query_prefs);
 
      $parent_dir_menu.find('a').attr( 'href', $parent_dir_link );
   }
   setParentLink();
	// Click parent directory menu button
   $parent_dir_menu.on('click','a',function(e) {
      e.preventDefault();
      setParentLink(); // update link in case query string has changed
      $('#parent_dir_menu').find('a').attr( 'href', $parent_dir_link );
      window.location = $parent_dir_link;
   });
 
   // MENUS: Directory Parents Links
   const parents_dir_menu_arr = function() {
      var $parents_dir_menu_items = [];
      // make array of directory parents menu items
      for ( let i = 1, n = $paths_arr.length + 1; i < n; i+=1 ) {
         $parents_dir_menu_items[i] = menuItems( $paths_arr, $paths_arr, i, false);
      }
      $parents_dir_menu_items.pop(); // remove current directory
 
      if ( $parents_dir_menu_items[1] !== undefined ) {
         let str = $parents_dir_menu_items[1].slice($parents_dir_menu_items[1].lastIndexOf('?'),$parents_dir_menu_items[1].lastIndexOf('">'));
         for ( let i = 1; i < $parents_dir_menu_items.length; i+=1 ) { // recursively update selected and history query str
            str = str.replace(/selected=\d+&*/,'').replace(/history=(\d+)$/,'selected=$1').replace(/history=(\d+)\+/,'selected=$1&history=').replace(/&$/,'');
            $parents_dir_menu_items[i] = $parents_dir_menu_items[i].replace(/\?.+?">/,str +'">');
         }
      }
      // cleanup links
      $parents_dir_menu_items = $parents_dir_menu_items.join('')
         .replace(/%20/g,' ').replace(/file=.+?&/g,'&').replace(/file=.+?/g,'').replace(/>\/(?!\/)/g,'>').replace(/>\/\/\/\/</,'>/<').replace(/>\/\/\/</,'>/<');
      return $parents_dir_menu_items;
   };
 
   // MENUS: User Shortcuts
   var $menu_items = [];
   var $shortcuts_links_arr = [];
 
   const shortcutMenus = function() {
      const $shortcuts = $settings.shortcuts;
 
      if ( $shortcuts.length > 0 ) {
         for ( let i = 0; i < $shortcuts.length; i+=1 ) {
            var $links_arr = [];
            var $links = $shortcuts[i].links;
            // make array of links
            for ( let j = 0; j < $links.length; j+=1 ) {
               if ( !$links[j].link.endsWith('/') ) {
                  $links[j].link = $links[j].link.slice(0,$links[j].link.lastIndexOf('/') + 1) + '?file=' + $links[j].link.slice($links[j].link.lastIndexOf('/') + 1) ;
               }
               $shortcuts_links_arr.push($links[j].link);
               $links_arr[j] = '<li><a href="'+ $links[j].link +'">' + $links[j].link_name + '</a></li>';
            }
            var $links_arr_str = $links_arr.join('');
            $menu_items[i] = '<li class="has_submenu"><a>'+ $shortcuts[i].menu_title +'</a><ul>'+ $links_arr_str +'</ul></li>';
         }
         $menu_items = $menu_items.join('');
      }
      return ($shortcuts_links_arr,$menu_items);
   };
   shortcutMenus();
 
   // MENUS: Other menu items
   var   $sort_by =           $('<li id="sort_by" class="has_submenu rule"><span>Sort by&hellip;</span><ul id="sort_menu"><li><span>Name</span></li><li id="sort_by_size"><span>Size</span></li><li id="sort_by_date"><span>Date</span></li><li><span>Kind</span></li><li><span>Extension</span></li><li><span>Default</span></li></ul>');
   const $autoload_media =    $('<li id="autoload_media" class="rule"><span id="autoload_media_menu">Autoload Media</span></li>');
   const $toggle_dark_theme = $('<li id="toggle_dark_theme_menu_item" class="checked"><div><span id="dark_theme">Dark Theme</span><span id="light_theme">Light Theme</span></div></li>');
   const $toggle_alt_bckgrd = $('<li class="rule" id="toggle_alternate_background_menu_item"><span id="alternate_background">Alternate Backgrounds</span></li>');
   const $default_settings =  $('<li><a href="#" id="default_settings" title="Delete URL query string and reload page.">Default User Settings</a></li>');
   const $export_settings =   $('<li class="rule"><a href="#" id="export_settings" title="Export user settings to text file.">Export User Settings</a></li>');
   const $contact_link =      $('<li><a id="contact" href="mailto:mshroud@vivaldi.net">Contact</a></li>');
   const $donate_link =       $('<li><a id="donate" href="https://paypal.me/mschrauzer" target="_blank">Donate</a></li>');
 
   function assembleMenus() { // called by buildUI();
      $parents_dir_menu.siblings('ul').append( parents_dir_menu_arr() );
      $shortcuts_menu.siblings('ul').append( $menu_items, $sort_by, $toggle_dark_theme, $toggle_alt_bckgrd, $autoload_media, $default_settings, $export_settings, $contact_link, $donate_link );
   }
   assembleMenus();
 
   // ***** END BUILD MENUS ***** //
   // ***** DIRECTORY LIST Setup ***** //
 
   // CONVERT INDEX PAGES TO DEFAULT (Chrome) STRUCTURE
 
   // Convert matched date and size strings to default size and date format, calculate data-values for sorting
   var yr, mo, dd, pref;
   var factor = {k:1, kb:1, m:1000, mb:1000, g:1000000, gb:1000000, t:1000000000,tb:1000000000}; // for file size conversion
   var sizeCalc = function(x,y) { // x = number, y = byte size
      y === '' ? y = 'k' : y = y;
      return x == '-' ? 0 : x * factor[ y.toString().toLowerCase() ]; // convert byte size to multiplication factor
   };
   var sizeAndDate = function(match,p1,p2,p3,p4,p5,p6,offset,string) {
      p1.toString().length == 4 ? (yr = p1, dd = p3) : (yr = p3, dd = p1);
      p2.toString().length == 3 ? mo = "JanFebMarAprMayJunJulAugSepOctNovDec".indexOf(p2)/3 + 1 : mo = p2; // convert month into number, or use number
      p6 = undefined|'' ? p6 = 1 : p6 = p6;
      mo.toString().length == 1 ? pref = 0 : pref = null; // add a zero before single digit months (i.e., multiply year by 10)
      return '<td class="size details" data-value="'+ sizeCalc(p5,p6) +'">' + [p5,p6].join('') + '</td><td class="date details" data-value="' + [yr, pref, mo, dd, p4.replace(/:/, '') ].join('') +'">'+ [yr, mo, dd].join('-') +' '+ [p4].join(':') +'</td></tr>\n';
   };
   // Standardize directory lists
   function convertDirList() {
      var $list_items;
      // AMPPS index pages
      let $protocol = window.location.protocol;
      if ( $protocol.indexOf('localhost') > -1 && $body.find('> title:contains(AMPPS)').length ) {
         $dir_list = $body.find('> center > div > table');
         $dir_list.remove();
         $body.addClass('is_ampps').empty().append($dir_list);
      }
      // Pre-type
      if ( $protocol !== 'file:' && $body.find('> pre').length > 0 ) {
         $list_items = $body.find('> pre').html();
         $body.addClass('is_converted_pre').find('> pre').remove();
 
         $list_items = $list_items
            .replace(/^.+?\n/, '') // delete header row
            .replace(/^.+?Parent Directory.+?\n/gm, '\n') // delete parent directory link
            .replace(/^\s*<a.+?>\.\.\/<\/a>\s*$/gm, '') // delete parent directory link (list type)
            .replace(/^\s*<img .+?>\s*/gm, '') // delete all images (icons)
            .replace(/^\s*<address>.+?<\/address>\s*/,'') // delete address element
            .replace(/^\s*<a href="(.+?)">(.+?)<\/a>\s*/gm, '<tr><td data-value="$2"><a class="icon" href="$1">$2</a></td>') // create name cell
            .replace(/(\d{2}|\d{4})[\/-](\d{2}|\w{3})[\/-](\d{2}|\d{4})\s+?([\d:]+)\s*([\.\d]+)([A-z]{0,2})\s*$/gm, sizeAndDate); // dates (search dd-mmm-yyyy hh:mm) and sizes
      };
      // List-type
      if ( $protocol !== 'file:' && $body.find('> ul').length > 0 ) {
         $list_items = $body.find('> ul').html();
         $body.addClass('is_converted_list').find('> ul').remove();
 
         if ( $list_items.indexOf('</a></li>') != -1 ) {
            $list_items = $list_items.replace(/<li>\s*/g,'<tr><td data-value="">').replace(/\s*<\/li>/g, '</td></tr>\n');
            $list_items = $list_items.replace(/data-value=""><a href="(.+?)">\s+(.+?)<\/a>/g, 'data-value="$2"><a class="icon" href="$1">$2<\/a>');
            $list_items = $list_items.replace(/<tr.+?Parent Directory.+?<\/tr>/,'');
         }
      }
      // Table-type
      if ( $protocol !== 'file:' && $body.find('> table').length > 0 ) {
         $list_items = $body.find('> table:last-of-type tbody').length > 0 ? $body.find('> table:last-of-type tbody').html() : $body.find('> table:last-of-type');
         $body.addClass('is_converted_table').find('> table').remove();
 
         $list_items = $list_items
         //            .replace(/<img .+?>/g, '') // delete all images (icons)
            .replace(/<tr><th.+?\/th><\/tr>/g, '') // delete empty tr
            .replace(/<tr><td.+?Parent Dir.+?<\/td><\/tr>/, '') // delete empty tr
            .replace(/(?:<th>|<td>|<td \w+="\w+">)(?:&nbsp;|\s*)(?:<\/th>|<\/td>)/g, '') // delete empty th or td
            .replace(/<td>\s*<a href="(.+?)">(.+?)<\/a>\s*<\/td>/g, '<td class="name" data-value="\L$2"><a class="icon" href="$1">$2</a></td>')
            .replace(/<tr><td.*?><img (.+?)><\/td><td (.+?)><a (.+?)>(.+?)<\/a>/g, '<tr><td $2><a $3><img $1>$4</a>') // move default image to .name td
            .replace(/(?:<td>|<td \w+="\w+">)(\d{4}|\d{2})-(\d{2}|\w{3})-(\d{4}|\d{2})\s*([\d:-]*)\s*<\/td>(?:<td>|<td \w+="\w+">)\s*([-\.\d]*)([A-z]*)\s*<\/td><\/tr>/g, sizeAndDate)
            .replace(/^\s*<address>.+?<\/address>\s*$/,''); // delete address line
      }
      // Gecko-style local index pages
      if ( $protocol === 'file:' && $userAgent.indexOf('Firefox') > -1 ) {
         $body.find('> table').find('> thead').find('th[colspan="2"]').attr('colspan',1);
         $list_items = $body.find('> table').find('> tbody').html();
         $body.find('> table').remove();
 
         $list_items = $list_items
            .replace(/<table class="ellipsis"><tbody><tr><td>/g,'')
            .replace(/<\/a><\/td><\/tr><\/tbody><\/table>/g,'')
            .replace(/sortable-data="\d+?/g,'data-value="')
            .replace(/<td data-value="(\d+)">([\d-]+)<\/td>\s*<td>(.+?)<\/td>/g,'<td data-value="$1">$2, $3</td>')
            .replace(/<td(.+?)><a/g,'<td class="name" $1><a class="icon"');
      }
      // Default Chrome type
      if ( $protocol === 'file:' && $body.find('> table').length > 0 && $userAgent.indexOf('Firefox') < 0) {
         $list_items = $body.find('> table tbody').html();
         $body.addClass('is_default_table').find('> table').remove();
      }
   $dir_list_body.append($list_items);
   }
   convertDirList();
   // ***** END CONVERT INDEX PAGES ***** //
 
   // Append directory list
 
   var $dir_list_row = $dir_list_body.find('> tr');
   var $dir_list_item_name = $dir_list_row.find('a').parent('td');
   var $dir_list_details = $dir_list_item_name.nextAll();
   $dir_list_details.addClass('details');
 
   // ***** END CONVERT INDEX PAGES ***** //
 
   // ***** PREPARE DIR LIST ***** //
 
   var $this_link;
   var $this_text;
   var $this_ext;
 
   // Get dir_list item row
   var thisRow = function(x) {
      return $(x).closest('#dir_list > tbody > tr').length > 0 ? $(x).closest('#dir_list > tbody > tr') : $(x).closest('#dir_list > li');
   };
   // Get row link
   var thisLink = function(x) {
      return $(x).find('a').length > 0 ? $(x).find('a').attr('href') : $(x).attr('href');
   };
   // Get row name
   var thisText = function(x) {
      return $(x).find('a').length > 0 ? decodeURIComponent( $(x).find('a').text().toLocaleLowerCase() ) : decodeURIComponent( $(x).text().toLocaleLowerCase() );
   };
   // get row text
   var thisExt = function(x) {
      let $this_link = thisLink(x).toLowerCase();
      return $this_link.endsWith('app/') ? 'app' : $this_link.endsWith('/') ? '/' : $this_link.toLowerCase().slice( $this_link.lastIndexOf('.') + 1 );
   };
   // normalize typed strings for navigation
   function stringNormalize(str) {
      var diacritics = [
         {char:'A', base:/[\u0041\u24B6\uFF21\u00C0\u00C1\u00C2\u1EA6\u1EA4\u1EAA\u1EA8\u00C3\u0100\u0102\u1EB0\u1EAE\u1EB4\u1EB2\u0226\u01E0\u00C4\u01DE\u1EA2\u00C5\u01FA\u01CD\u0200\u0202\u1EA0\u1EAC\u1EB6\u1E00\u0104\u023A\u2C6F]/g}, {char:'AA',base:/[\uA732]/g}, {char:'AE',base:/[\u00C6\u01FC\u01E2]/g}, {char:'AO',base:/[\uA734]/g}, {char:'AU',base:/[\uA736]/g}, {char:'AV',base:/[\uA738\uA73A]/g}, {char:'AY',base:/[\uA73C]/g},
         {char:'B', base:/[\u0042\u24B7\uFF22\u1E02\u1E04\u1E06\u0243\u0182\u0181]/g},
         {char:'C', base:/[\u0043\u24B8\uFF23\u0106\u0108\u010A\u010C\u00C7\u1E08\u0187\u023B\uA73E]/g},
         {char:'D', base:/[\u0044\u24B9\uFF24\u1E0A\u010E\u1E0C\u1E10\u1E12\u1E0E\u0110\u018B\u018A\u0189\uA779]/g}, {char:'DZ',base:/[\u01F1\u01C4]/g}, {char:'Dz',base:/[\u01F2\u01C5]/g},
         {char:'E', base:/[\u0045\u24BA\uFF25\u00C8\u00C9\u00CA\u1EC0\u1EBE\u1EC4\u1EC2\u1EBC\u0112\u1E14\u1E16\u0114\u0116\u00CB\u1EBA\u011A\u0204\u0206\u1EB8\u1EC6\u0228\u1E1C\u0118\u1E18\u1E1A\u0190\u018E]/g},
         {char:'F', base:/[\u0046\u24BB\uFF26\u1E1E\u0191\uA77B]/g},
         {char:'G', base:/[\u0047\u24BC\uFF27\u01F4\u011C\u1E20\u011E\u0120\u01E6\u0122\u01E4\u0193\uA7A0\uA77D\uA77E]/g},
         {char:'H', base:/[\u0048\u24BD\uFF28\u0124\u1E22\u1E26\u021E\u1E24\u1E28\u1E2A\u0126\u2C67\u2C75\uA78D]/g},
         {char:'I', base:/[\u0049\u24BE\uFF29\u00CC\u00CD\u00CE\u0128\u012A\u012C\u0130\u00CF\u1E2E\u1EC8\u01CF\u0208\u020A\u1ECA\u012E\u1E2C\u0197]/g},
         {char:'J', base:/[\u004A\u24BF\uFF2A\u0134\u0248]/g},
         {char:'K', base:/[\u004B\u24C0\uFF2B\u1E30\u01E8\u1E32\u0136\u1E34\u0198\u2C69\uA740\uA742\uA744\uA7A2]/g},
         {char:'L', base:/[\u004C\u24C1\uFF2C\u013F\u0139\u013D\u1E36\u1E38\u013B\u1E3C\u1E3A\u0141\u023D\u2C62\u2C60\uA748\uA746\uA780]/g}, {char:'LJ',base:/[\u01C7]/g}, {char:'Lj',base:/[\u01C8]/g},
         {char:'M', base:/[\u004D\u24C2\uFF2D\u1E3E\u1E40\u1E42\u2C6E\u019C]/g},
         {char:'N', base:/[\u004E\u24C3\uFF2E\u01F8\u0143\u00D1\u1E44\u0147\u1E46\u0145\u1E4A\u1E48\u0220\u019D\uA790\uA7A4]/g}, {char:'NJ',base:/[\u01CA]/g}, {char:'Nj',base:/[\u01CB]/g},
         {char:'O', base:/[\u004F\u24C4\uFF2F\u00D2\u00D3\u00D4\u1ED2\u1ED0\u1ED6\u1ED4\u00D5\u1E4C\u022C\u1E4E\u014C\u1E50\u1E52\u014E\u022E\u0230\u00D6\u022A\u1ECE\u0150\u01D1\u020C\u020E\u01A0\u1EDC\u1EDA\u1EE0\u1EDE\u1EE2\u1ECC\u1ED8\u01EA\u01EC\u00D8\u01FE\u0186\u019F\uA74A\uA74C]/g}, {char:'OI',base:/[\u01A2]/g}, {char:'OO',base:/[\uA74E]/g}, {char:'OU',base:/[\u0222]/g},
         {char:'P', base:/[\u0050\u24C5\uFF30\u1E54\u1E56\u01A4\u2C63\uA750\uA752\uA754]/g},
         {char:'Q', base:/[\u0051\u24C6\uFF31\uA756\uA758\u024A]/g},
         {char:'R', base:/[\u0052\u24C7\uFF32\u0154\u1E58\u0158\u0210\u0212\u1E5A\u1E5C\u0156\u1E5E\u024C\u2C64\uA75A\uA7A6\uA782]/g},
         {char:'S', base:/[\u0053\u24C8\uFF33\u1E9E\u015A\u1E64\u015C\u1E60\u0160\u1E66\u1E62\u1E68\u0218\u015E\u2C7E\uA7A8\uA784]/g},
         {char:'T', base:/[\u0054\u24C9\uFF34\u1E6A\u0164\u1E6C\u021A\u0162\u1E70\u1E6E\u0166\u01AC\u01AE\u023E\uA786]/g}, {char:'TZ',base:/[\uA728]/g},
         {char:'U', base:/[\u0055\u24CA\uFF35\u00D9\u00DA\u00DB\u0168\u1E78\u016A\u1E7A\u016C\u00DC\u01DB\u01D7\u01D5\u01D9\u1EE6\u016E\u0170\u01D3\u0214\u0216\u01AF\u1EEA\u1EE8\u1EEE\u1EEC\u1EF0\u1EE4\u1E72\u0172\u1E76\u1E74\u0244]/g},
         {char:'V', base:/[\u0056\u24CB\uFF36\u1E7C\u1E7E\u01B2\uA75E\u0245]/g}, {char:'VY',base:/[\uA760]/g},
         {char:'W', base:/[\u0057\u24CC\uFF37\u1E80\u1E82\u0174\u1E86\u1E84\u1E88\u2C72]/g},
         {char:'X', base:/[\u0058\u24CD\uFF38\u1E8A\u1E8C]/g},
         {char:'Y', base:/[\u0059\u24CE\uFF39\u1EF2\u00DD\u0176\u1EF8\u0232\u1E8E\u0178\u1EF6\u1EF4\u01B3\u024E\u1EFE]/g},
         {char:'Z', base:/[\u005A\u24CF\uFF3A\u0179\u1E90\u017B\u017D\u1E92\u1E94\u01B5\u0224\u2C7F\u2C6B\uA762]/g},
 
         {char:'a', base:/[\u0061\u24D0\uFF41\u1E9A\u00E0\u00E1\u00E2\u1EA7\u1EA5\u1EAB\u1EA9\u00E3\u0101\u0103\u1EB1\u1EAF\u1EB5\u1EB3\u0227\u01E1\u00E4\u01DF\u1EA3\u00E5\u01FB\u01CE\u0201\u0203\u1EA1\u1EAD\u1EB7\u1E01\u0105\u2C65\u0250]/g}, {char:'aa',base:/[\uA733]/g}, {char:'ae',base:/[\u00E6\u01FD\u01E3]/g}, {char:'ao',base:/[\uA735]/g}, {char:'au',base:/[\uA737]/g}, {char:'av',base:/[\uA739\uA73B]/g}, {char:'ay',base:/[\uA73D]/g},
         {char:'b', base:/[\u0062\u24D1\uFF42\u1E03\u1E05\u1E07\u0180\u0183\u0253]/g},
         {char:'c', base:/[\u0063\u24D2\uFF43\u0107\u0109\u010B\u010D\u00E7\u1E09\u0188\u023C\uA73F\u2184]/g},
         {char:'d', base:/[\u0064\u24D3\uFF44\u1E0B\u010F\u1E0D\u1E11\u1E13\u1E0F\u0111\u018C\u0256\u0257\uA77A]/g}, {char:'dz',base:/[\u01F3\u01C6]/g},
         {char:'e', base:/[\u0065\u24D4\uFF45\u00E8\u00E9\u00EA\u1EC1\u1EBF\u1EC5\u1EC3\u1EBD\u0113\u1E15\u1E17\u0115\u0117\u00EB\u1EBB\u011B\u0205\u0207\u1EB9\u1EC7\u0229\u1E1D\u0119\u1E19\u1E1B\u0247\u025B\u01DD]/g},
         {char:'f', base:/[\u0066\u24D5\uFF46\u1E1F\u0192\uA77C]/g},
         {char:'g', base:/[\u0067\u24D6\uFF47\u01F5\u011D\u1E21\u011F\u0121\u01E7\u0123\u01E5\u0260\uA7A1\u1D79\uA77F]/g},
         {char:'h', base:/[\u0068\u24D7\uFF48\u0125\u1E23\u1E27\u021F\u1E25\u1E29\u1E2B\u1E96\u0127\u2C68\u2C76\u0265]/g}, {char:'hv',base:/[\u0195]/g},
         {char:'i', base:/[\u0069\u24D8\uFF49\u00EC\u00ED\u00EE\u0129\u012B\u012D\u00EF\u1E2F\u1EC9\u01D0\u0209\u020B\u1ECB\u012F\u1E2D\u0268\u0131]/g},
         {char:'j', base:/[\u006A\u24D9\uFF4A\u0135\u01F0\u0249]/g},
         {char:'k', base:/[\u006B\u24DA\uFF4B\u1E31\u01E9\u1E33\u0137\u1E35\u0199\u2C6A\uA741\uA743\uA745\uA7A3]/g},
         {char:'l', base:/[\u006C\u24DB\uFF4C\u0140\u013A\u013E\u1E37\u1E39\u013C\u1E3D\u1E3B\u017F\u0142\u019A\u026B\u2C61\uA749\uA781\uA747]/g}, {char:'lj',base:/[\u01C9]/g},
         {char:'m', base:/[\u006D\u24DC\uFF4D\u1E3F\u1E41\u1E43\u0271\u026F]/g},
         {char:'n', base:/[\u006E\u24DD\uFF4E\u01F9\u0144\u00F1\u1E45\u0148\u1E47\u0146\u1E4B\u1E49\u019E\u0272\u0149\uA791\uA7A5]/g}, {char:'nj',base:/[\u01CC]/g},
         {char:'o', base:/[\u006F\u24DE\uFF4F\u00F2\u00F3\u00F4\u1ED3\u1ED1\u1ED7\u1ED5\u00F5\u1E4D\u022D\u1E4F\u014D\u1E51\u1E53\u014F\u022F\u0231\u00F6\u022B\u1ECF\u0151\u01D2\u020D\u020F\u01A1\u1EDD\u1EDB\u1EE1\u1EDF\u1EE3\u1ECD\u1ED9\u01EB\u01ED\u00F8\u01FF\u0254\uA74B\uA74D\u0275]/g}, {char:'oi',base:/[\u01A3]/g}, {char:'ou',base:/[\u0223]/g}, {char:'oo',base:/[\uA74F]/g},
         {char:'p', base:/[\u0070\u24DF\uFF50\u1E55\u1E57\u01A5\u1D7D\uA751\uA753\uA755]/g},
         {char:'q', base:/[\u0071\u24E0\uFF51\u024B\uA757\uA759]/g},
         {char:'r', base:/[\u0072\u24E1\uFF52\u0155\u1E59\u0159\u0211\u0213\u1E5B\u1E5D\u0157\u1E5F\u024D\u027D\uA75B\uA7A7\uA783]/g},
         {char:'s', base:/[\u0073\u24E2\uFF53\u00DF\u015B\u1E65\u015D\u1E61\u0161\u1E67\u1E63\u1E69\u0219\u015F\u023F\uA7A9\uA785\u1E9B]/g},
         {char:'t', base:/[\u0074\u24E3\uFF54\u1E6B\u1E97\u0165\u1E6D\u021B\u0163\u1E71\u1E6F\u0167\u01AD\u0288\u2C66\uA787]/g}, {char:'tz',base:/[\uA729]/g},
         {char:'u', base:/[\u0075\u24E4\uFF55\u00F9\u00FA\u00FB\u0169\u1E79\u016B\u1E7B\u016D\u00FC\u01DC\u01D8\u01D6\u01DA\u1EE7\u016F\u0171\u01D4\u0215\u0217\u01B0\u1EEB\u1EE9\u1EEF\u1EED\u1EF1\u1EE5\u1E73\u0173\u1E77\u1E75\u0289]/g},
         {char:'v', base:/[\u0076\u24E5\uFF56\u1E7D\u1E7F\u028B\uA75F\u028C]/g}, {char:'vy',base:/[\uA761]/g},
         {char:'w', base:/[\u0077\u24E6\uFF57\u1E81\u1E83\u0175\u1E87\u1E85\u1E98\u1E89\u2C73]/g},
         {char:'x', base:/[\u0078\u24E7\uFF58\u1E8B\u1E8D]/g},
         {char:'y', base:/[\u0079\u24E8\uFF59\u1EF3\u00FD\u0177\u1EF9\u0233\u1E8F\u00FF\u1EF7\u1E99\u1EF5\u01B4\u024F\u1EFF]/g},
         {char:'z', base:/[\u007A\u24E9\uFF5A\u017A\u1E91\u017C\u017E\u1E93\u1E95\u01B6\u0225\u0240\u2C6C\uA763]/g}
      ];
      diacritics.forEach(function(letter) {
         str = str.replace(letter.base, letter.char);
      });
      return str;
   }
 
   // Dir_List: Classify items
   function classifyDirListItems() {
      $dir_list_row.each(function() {
         let row = {};
         $this_link = thisLink(this);
         $this_text = thisText(this).endsWith('/') ? thisText(this).slice(0,-1) : thisText(this); // don't include '/'
         $this_ext = thisExt(this);
         // add classes and data to row cells
         $(this).attr('id',$(this).index()).find('td').first().addClass('name').attr( 'data-value',stringNormalize( $this_text )).next('td:not(.kind)').attr('class','size').next('td:not(.kind)').attr('class','date'); // add tr ID and td.name data-value
         // add dir or file classes
         if ( $this_ext === '/' ) { // add tr data-ext
            $(this).addClass('dir').attr('data-ext','dir');
         } else {
            $(this).addClass('file').attr('data-ext',$this_ext);
         }
         // add tr invisible class
         if ( $this_text.startsWith('.') ) {
            $(this).addClass('invisible');
         }
         // add kind and ext detail columns
         $(this).append('<td class="detailsColumn details kind" data-value="File">File</td>')
            .append('<td class="detailsColumn details ext" data-value="'+ $this_ext +'">&nbsp;</td>');
         // Classify "other" if extension is not in $row_types.
         if ( !JSON.stringify($row_types).includes($this_ext) ) {
            $(this).addClass('other').attr('data-type','Other').attr('data-kind','other').find('td.kind').attr('data-value','other').text('Other');
         }
         for ( let key in $row_types ) { // Categorize rows by listed supported file types
            if ( $row_types[key].includes($this_ext) ) {
               let $display_key = key.charAt(0).toUpperCase() + key.slice(1); // make display name for file type
               let kind = $display_key === undefined ? 'File' : $display_key;
               $(this).addClass(key).addClass($this_ext).attr('data-type',$display_key).attr('data-kind',kind.toLowerCase() ).find('td.kind').attr('data-value',kind).text(kind); // add kind and ext classes, data-type, data-kind
 
               if ( key === 'audio' || key === 'video' ) { // media classes and prepend checkbox
                  $(this).addClass('media').find('a').prepend('<input type="checkbox" tabindex="-1" checked="true" />');
               };
            }
         }
         // For ignored and excluded items
         for ( let key in $row_settings ) {
            if ( $row_settings[key].includes($this_ext) ) {
               $(this).addClass(key);
            }
            if ( $row_settings[key].includes($this_ext) && key == 'ignore' ) {
            }
         }
 
      }); // end classify dir_list items
   }
   classifyDirListItems();
 
   // ***** END DIR_LIST SETUP ***** //
 
   // ***** UI SETUP ***** //
 
   // Add body classes
   function setupUI() {
      if ( $dir_list.find('.audio').length > 0 ) {
         $body.add($dir_list).addClass('has_audio has_media');
      }
      if ( $dir_list.find('.font').length > 0 ) {
         $body.addClass('has_fonts');
      }
      if ( $dir_list.find('.image').length > 0 ) {
         $body.addClass('has_images');
      }
      if ( $dir_list.find('.video').length > 0 ) {
         $body.add($dir_list).addClass('has_video has_media');
      }
      setQuery('autoload_media',$UI_pref_autoload_media);
      if ( $UI_pref_autoload_media === true ) {
         $body.addClass('autoload_media');
         $autoload_media.addClass('checked');
      } else {
         $body.removeClass('autoload_media');
         $autoload_media.removeClass('checked');
      }
      if ( $settings.autoload_index_files === true ) {
         $body.addClass('autoload_index_files');
      }
      if ( $settings.use_custom_icons === true ) {
         $body.addClass('use_custom_icons')
      } else {
         $body.addClass('use_default_icons');
      }
      if ( $settings.hide_ignored_files === true ) {
         $body.addClass('hide_ignored');
      }
      if ( navigator.platform.indexOf('Win') > -1 || $location.indexOf('file:') < 0 ) {
         $inv_checkbox.hide();
      } else if ( $settings.hide_invisibles === true ) {
         $inv_checkbox.find('input').prop('checked',true);
         $body.addClass('hide_invisibles').removeClass('show_invisibles')
      } else {
         $inv_checkbox.find('input').prop('checked',false);
         $body.addClass('show_invisibles').removeClass('hide_invisibles')
      }
      setQuery('alternate_background',$UI_pref_background);
      if ( $UI_pref_background === true ) {
         $body.addClass('alternate_background');
         $toggle_alt_bckgrd.addClass('checked');
      } else {
         $body.removeClass('alternate_background');
         $toggle_alt_bckgrd.removeClass('checked');
      }
      if ( $UI_pref_details === false ) {
         $dir_list.addClass('show_details');
         $dir_list_body.css({'top':$dir_list_head.height() + 1 +'px'});
         $details_btn.find('span').first().hide().next().show();
      }
      if ( $UI_pref_theme === true ) {
         $body.addClass('dark_theme');
      } else {
         $body.addClass('light_theme');
      }
      if ( $userAgent.indexOf('Chrome') > 0 ) { $body.addClass('is_chrome'); }
      if ( $userAgent.indexOf('Firefox') > 0 ) { $body.addClass('is_gecko'); }
   };
   setupUI();
 
   // Build UI
   function buildUI() {
      $dir_list.appendTo($sidebar);
 
      var $main_content = $('<table id="main_content"><tbody><tr></tr></tbody></table>');
      $main_content.find('tr').append( $sidebar_wrapper, $content_pane );
 
      $body.empty().prepend($main_content);
 
      if ( $body.hasClass('is_converted_list') ) {
         $('#sort_by_size, #sort_by_date, #size, #date').addClass('disabled');
      }
      if ( $body.hasClass('is_converted_table') || $body.hasClass('is_converted_pre') ) {
         if ( $dir_list.find('td.size').length < 1 ) {
            $('#sort_by_size,th#size').addClass('disabled');
         }
         if ( $dir_list.find('td.date').length < 1 ) {
            $('#sort_by_date,th#date').addClass('disabled');
         }
      }
   }
   buildUI();
 
   // ***** BASIC UI FUNCTIONS ***** //
   // Show Menus
   function showMenus(el) {
      var $position = $(el).position();
      $(el).find('> ul').css({'top':$position.top + $(el).innerHeight() + 'px'}).toggle().parent('td').siblings('td').find('.menu').hide();
   }
   $parents_dir_menu.add($shortcuts_menu).parent('td').on('click',function(e) {
      e.stopPropagation();
      showMenus(this);
   });
   // Hide Menus
   function hideMenus() {
      $('.menu').hide();
   }
   $(document).on('click', hideMenus );
   // Toggle Invisibles
   function toggleInvisibles() {
      $body.toggleClass('hide_invisibles').toggleClass('show_invisibles');
   }
   $inv_checkbox.on('click','input', toggleInvisibles );
   // Toggle Autoload Media
   function toggleAutoloadMedia(e) {
      e.preventDefault();
      $body.toggleClass('autoload_media');
      toggleQuery('autoload_media');
      $autoload_media.toggleClass('checked');
   }
   $autoload_media.on('click', toggleAutoloadMedia );
   // Toggle Dark Theme
   function toggleDarkMode(e) {
      e.preventDefault();
      $body.toggleClass('dark_theme').toggleClass('light_theme');
      toggleQuery('dark_theme');
   }
   $toggle_dark_theme.on('click', toggleDarkMode );
   // Toggle Alternating Row Background
   function toggleAlternateBackground(e) {
      e.preventDefault();
      $body.toggleClass('alternate_background');
      toggleQuery('alternate_background');
      $toggle_alt_bckgrd.toggleClass('checked');
   }
   $toggle_alt_bckgrd.on('click', toggleAlternateBackground );
   // Toggle Details
   function toggleDetails() {
      $dir_list.toggleClass('show_details');
      $dir_list_body.css({'top':$dir_list_head.height() + 1 +'px'});
      $details_btn.find('span').toggle();
      toggleQuery('hide_details');
   }
   $details_btn.on('click', toggleDetails );
   // Show/Hide Sidebar
   function toggleSidebar() {
      $body.toggleClass('has_hidden_sidebar');
      setContentHeight();
   }
   $toggle_sidebar.on('click', function() {
      toggleSidebar();
      scrollThis('dir_list','selected',true); // true = instant scroll
   });
   // Default settings: remove queries;
   function defaultSettings() {
      $location = window.location.href;
      $location = $location.slice(0,$location.lastIndexOf('?'));
      window.location.assign($location);
   }
   $default_settings.on('click', function() {
      if (window.confirm( "Are you sure you want to reset all your temporary UI settings to the defaults in your user_settings?" ) ) {
         defaultSettings();
      }
   });
 
   //***** UI SETUP *****//
 
   // Set Content Height
   function setContentHeight() {
      let $window_height = window.innerHeight;
      let $dir_list_head_height = $dir_list_head.length ? $dir_list_head.height() : 0;
      let $content_header_height = $content_header.outerHeight();
      $dir_list.add($dir_list_wrapper).css({'height':$window_height - $sidebar_header.outerHeight() });
      $dir_list.find($dir_list_body).css({'top': $dir_list_head_height });
      $content_image.add($prev_btn).add($next_btn).css({'top':$content_header_height });
      $content_grid.add($content_pdf).add($content_iframe).add($content_font).css({'height':$window_height - $content_header_height,'top':$content_header_height });
      $content_scale.css({'top':$content_header_height + 13 });
      $('#prev_track, #next_track, #close_audio').css({'height':$audio.height() });
   }
   window.addEventListener('resize', function(e) {
      setContentHeight();
   });
 
   // Set Content Title
   const $title = $content_pane.find('#title');
 
   function setContentTitle() {
      let $title_text = '';
      if ( $('.playing').hasClass('audio') ) { // set audio player title
         $content_audio_title.find('td').empty().append( $('.playing').find('td.name a').text() );
      }
      if ( $content_pane.hasClass('has_grid') ) { // set main title for other content
         $title_text = $current_dir_name;
      } else {
         $title_text = $title_text + $('.selected:not(.audio)').find('td.name a').text(); // Assemble title
      }
      $title.empty().text( $title_text ); // Add file name
      if ( $('.selected').hasClass('image') && !$content_pane.hasClass('has_grid') ) {
         setDimensions($('.selected.image'));
      }
   }
   // Get Image Dimensions
   function getDimensions(link, callback) {
      var img = new Image();
      img.src = link;
      img.onload = function() { callback( this.width, this.height ); };
   }
   function setDimensions(row) {
      getDimensions( thisLink(row), function( width, height ) {
         $title.append(' <span style="text-transform:lowercase;">(' + width + 'px &times; ' + height + 'px</span>)' );
      });
   }
   // Scroll Selected Items
   function scrollThis(elID,className,bool) {
      let $behavior = 'smooth';
      bool === undefined ? null : $behavior = 'instant';
      var $block = $userAgent.indexOf('Firefox') > -1 ? $block = 'start' : $block = 'nearest';
      if ( document.getElementsByClassName(className).length > 0 ) {
         document.getElementById(elID).getElementsByClassName(className)[0].scrollIntoView({ behavior:$behavior, block:$block, inline:'nearest' });
      }
   }
 
   // ***** SORTING ***** //
   var $sort_all = $dir_list_body.find('tr');
   var $sort_dirs = $dir_list_body.find('tr.dir').not('.app');
   var $sort_files = $dir_list_body.find('tr').not('.dir').add('.app');
   var currentIndex, prevIndex;
   var $default_index = $('#thead').find('#default').index();
   var $sort_order = 1;
 
   var dataName = function(x) {
      return $(x).find('td').eq(0).data('value').toString();
   };
   var dataData = function(x,index) {
      return $(x).find('td').eq(index).attr('data-value') === undefined ? '' : $(x).find('td').eq(index).attr('data-value').toString();
   };
   // Sort comparison functions
   var sortByName = function(x,y,sortDirection) {
      return sortDirection === 1 ? dataName(x).localeCompare(dataName(y)) : dataName(y).localeCompare(dataName(x));
   };
   var sortByData = function(x,y,index,sortDirection) { // sort by data then by name
      if ( sortDirection === 1 ) {
         return dataData(x,index).localeCompare(dataData(y,index), undefined, { numeric:true }) === 0 ? dataName(x).localeCompare(dataName(y)) : dataData(x,index).localeCompare(dataData(y,index), undefined, { numeric:true });
      } else {
         return dataData(y,index).localeCompare(dataData(x,index), undefined, { numeric:true }) === 0 ? dataName(y).localeCompare(dataName(x)) : dataData(y,index).localeCompare(dataData(x,index), undefined, { numeric:true });
      }
   };
   // Sort elements: sort by name if index = 0, else sort by data-value.
   var sortEls = function(els,index,sortDirection) {
      els.detach().sort(function(a,b) {
         return index === 0 ? sortByName(a,b,sortDirection) : sortByData(a,b,index,sortDirection);
      });
   };
   // Sort Dir List
   function sortDirList(index, sortDirection) {
      $dir_list_row.removeClass('sorted');
 
      if ( index == $default_index ) {
         if ( index == $default_index ) {
            index = 0;
         }
         // sort dirs and files separately
         sortEls( $sort_dirs, index, sortDirection );
         sortEls( $sort_files, index, sortDirection );
         if (sortDirection === 1 ) { // append dirs and files according to sort direction
            $.each($sort_dirs, function() { $dir_list_body.append(this); });
            $.each($sort_files, function() { $dir_list_body.append(this); });
         } else {
            $.each($sort_files, function() { $dir_list_body.append(this); });
            $.each($sort_dirs, function() { $dir_list_body.append(this); });
         }
      } else if ( $settings.dirs_on_top === false || index == 0 && index !== $default_index ) { // sort all dirs and files, append, remove body class
         sortEls( $sort_all, index, sortDirection );
         $.each($sort_all, function() { $dir_list_body.append(this); });
         $body.removeClass('is_dirs_on_top');
      } else if ( $settings.dirs_on_top === true || index !== 0 ) { // sort dirs and files separately
         sortEls( $sort_dirs, index, sortDirection );
         sortEls( $sort_files, index, sortDirection );
         if (sortDirection === 1 ) { // append dirs and files according to sort direction
            $.each($sort_dirs, function() { $dir_list_body.append(this); });
            $.each($sort_files, function() { $dir_list_body.append(this); });
         } else {
            $.each($sort_files, function() { $dir_list_body.append(this); });
            $.each($sort_dirs, function() { $dir_list_body.append(this); });
         }
      }
      if ( index === $('#thead').find('#kind').index() || index === $('#thead').find('#ext').index() ) {
         $body.addClass('is_dirs_on_top');
         addSortStyle( index, sortDirection );
      }
   }
   // Add Sort Styles (for rules)
   function addSortStyle(index, sortDirection) {
      var $this_value, $next_value;
      $dir_list_row.removeClass('sorted');
 
      $dir_list_row.filter(':visible').not('.dir').add('.app').each(function() {
         $this_value = $(this).find('td').eq(index).attr('data-value');
         $next_value = $(this).next('tr:visible').find('td').eq(index).attr('data-value');
 
         if ( $this_value !== $next_value ) {
            $(this).addClass('sorted');
         }
         if ( $(this).attr('data-type') !== $(this).next('tr:visible').attr('data-type') ) {
            $(this).addClass('sorted');
         }
      });
      // for last dir
      if ( sortDirection == 1 ) {
         $dir_list_row.filter('.dir').last().addClass('sorted');
      }
   }
   // Sort on click
   function clickSort(x,y) { // x = clicked sort link, y = bool (false ? don't set query_prefs)
      currentIndex = x.index();
      // Only reverse sort order after clicking a sort column once.
      if ( currentIndex != prevIndex ) {
         prevIndex = currentIndex;
         $sort_order = 1;
      }
 
      sortDirList(currentIndex, $sort_order);
      $sort_order = -1 * $sort_order;
 
      x.toggleClass('up').addClass('checked').siblings().removeClass('checked up');
      $('#sort_menu').find('li').eq(currentIndex).addClass('checked').siblings().removeClass('checked');
 
      setContentHeight();
      // set sorting query pref
      if ( y === true ) {
         $query_prefs = getQueryPrefs();
         $query_prefs.set('sort',$('#sort_menu').find('li').eq(currentIndex).text().toLowerCase() );
         updateQuery();
      }
   }
   // Sort on clicking dir_list sort header
   $('#thead').on('click','th:not(.disabled)',function(e) {
      e.preventDefault();
      e.stopPropagation();
      var i = $(this).index();
      clickSort( $(this),true)
   });
   // Sort Menu: click the list header that contains the selected menu text.
   $('#sort_menu').on('click','li:not(.disabled)',function(e) {
      e.preventDefault();
      e.stopPropagation();
      $(this).addClass('checked').siblings().removeClass('checked');
      $('#theader th[id*="'+ thisText($(this)).slice(0,2) +'" i]').click();
   });
   // Initialize sort
   function initialSort() {
      switch ( $UI_pref_sort ) {
         case 'name':
            i = 0;
            break;
         case 'size':
            i = 1;
            break;
         case 'date':
            i = 2;
            break;
         case 'kind':
            i = 3;
            break;
         case 'extension':
            i = 4;
            break;
         default:
            i = 5;
      }
      $('#theader').find('th').eq(i).click();
   }
   initialSort();
 
   // ***** END SORTING ***** //
   // ***** END BASIC UI FUNCTIONS ***** //
 
   // ***** CONTENT PREVIEW ***** //
 
   var $selected = $dir_list.find('.selected');
   var $playing = $dir_list.find('.playing');
   var $media = $dir_list.find('td').filter('.media:not(.unchecked):not(.ignored)');
 
   // SELECT ROW on click and set classes for $content_pane
   function selectThis(row) {
      let $grid_selected = $content_grid.find('div.font_grid_item a[href="'+ thisLink(row) +'"]').closest('div').add('div.image_grid_item a[href="'+ thisLink(row) +'"]').closest('div').addBack();
      if ( $content_pane.hasClass('has_grid') ) { // Select corresponding grid item
         row.addClass('selected').siblings().removeClass('selected hovered');
         $grid_selected.addClass('selected').siblings().removeClass('selected');
      } else if ( row.hasClass('audio') ) { // if row is audio, remove playing and selected classes
         row.addClass('selected playing').siblings('.media').removeClass('selected playing hovered');
      } else { // remove classes from rows, but leave .audio with playing
         row.addClass('selected').siblings().removeClass('selected hovered');
      }
   }
 
   //***** SHOW CONTENT *****//
   // Show Font
   var $font_family_arr = [];
   function showFont(row) {
      var $font_family = thisText(row);
      if ( $font_family_arr.indexOf($font_family) == -1 ) { // if font family is not in array, add it
         $font_family_arr.push($font_family);
         $font_preview_styles.append('@font-face { font-family: "'+ $font_family +'"; src: url("'+ thisLink(row) +'"); }'); // only add style if it doesn't exist
      }
      $content_font.css({ 'font-family':'"'+ $font_family +'"' });
   }
   // Show Grid
   function showGrid() {
      $content_pane.removeClass('has_hidden_grid').addClass('has_grid');
      setContentSource($content_grid);
      setContentTitle();
      setContentHeight();
      selectThis($('.selected'));
   }
   // Hide Grid
   function hideGrid() {
      if ( $content_pane.hasClass('has_grid') ) {
         $content_pane.removeClass('has_grid').addClass('has_hidden_grid');
      }
   }
   // Set Content Source
   function setContentSource(el,link) { // add source attribute to content containers, excluding $content_font
      let $el_ID = $(el).attr('id');
      switch ($el_ID) {
         case 'content_audio':
            $(el).find('audio').attr('src',link);
            break;
         case 'content_image':
            $(el).find('img').attr('src',link);
            break;
         case 'content_font':
            break;
         default: // content_pdf, content_video, or content_iframe
            $(el).attr('src',link);
      }
   }
   // SHOW CONTENT
   function showContent(row) { // show any content excluding grids
      if ( row.length > 0 ) { // needed for left/right arrow nav when there are no valid items (i.e. images or fonts)
         let kind = thisRow(row).hasClass('ignore') ? 'ignored' : thisRow(row).attr('data-kind'); // get file kind
             !['audio','font','image','pdf','video','ignored'].includes(kind) || kind === 'dir' ? kind = 'iframe' : null; // load dirs and any other kind of content except audio, font, image, pdf, or video into iframe
         let link = kind === 'pdf' ? thisLink(row) + '?#view=fitB&scrollbar=1&toolbar=1&navpanes=1' : thisLink(row); // add pdf query str to link
         $content_pane.hasClass('has_grid') ? hideGrid() : null;
         closeAllContent(row); // except audio and grids
         if ( kind === 'ignored' ) {
            $content_pane.addClass('has_ignored');
         } else {
            setContentSource( '#content_'+ kind, link ); // set content container source
            kind === 'font' ? showFont(row) : null; // set $content_font css
            kind === 'image' ? $content_grid.find('a[href="' + thisLink(row) + '"]').parent('div').addClass('selected').siblings().removeClass('selected') : null; // set image source
            kind === 'video' ? closeAudio() : null; // if video, close audio
         }
         thisRow(row).attr('data-kind') === 'dir' ? $content_pane.addClass( 'has_dir' ) : $content_pane.addClass( 'has_'+ kind ); // add content pane class
         setContentHeight();
         setContentTitle();
         kind === 'audio' ? autoLoadCoverArt() : null; // autoload cover art on selecting audio
      }
   }
 
   //***** CLOSE CONTENT (Close button or Cmd/Ctrl + W) *****//
   // Close Audio
   function closeAudio() {
      $('.audio.playing').removeClass('playing');
      $content_pane.removeClass('has_audio').find('#content_audio_title td').empty();
      $audio.trigger('pause').attr('src','');
      setContentHeight();
   }
   // Close audio button click
   $close_audio.on('click',function(e) {
      e.stopPropagation();
      closeAudio();
   });
   // Close Grid
   function closeGrid() {
      $content_pane.removeClass('has_grid');
      $content_grid.empty().removeClass().attr('style','').find('.image_grid_item, img').attr('style','');
   }
   // Close content excluding audio and grids
   function closeAllContent(row) {
   if ( row !== undefined && row.hasClass('audio') ) {
   return;
   } else {
      let $content_classes = $content_pane.attr('class') !== undefined ? $content_pane.attr('class').split(' ') : []; // get array of content pane classes
      for ( let $content_class of $content_classes ) { // for each content_pane class, define the associated content container, remove class and source
         let $container_name = '#content_'+ $content_class.substring(4);
         let $content_el = $( $container_name ); // define content container from content pane class name
         if ( ['has_font','has_image','has_pdf','has_video','has_iframe','has_dir','has_ignored'].includes($content_class) ) { // if not grid or audio, remove class
            $content_pane.removeClass($content_class);
            if ( $content_class === 'has_font' ) { // remove font style
               $content_font.css({'font-family':''})
               $content_font.css({'font-size':'1em'}); // reset font: comment out to retain font scale after loading other content
            } else if ( $content_class === 'has_image' ) { // remove image src
               $content_image.find('img').attr('src','');
               $content_image.attr('data-image-scale-factor',1).find('img').removeClass('zoom_img').attr('style',''); // reset image: comment out to retain image scale after loading other content
            } else if ( $content_class === 'has_video' ) { // remove video src
               $content_video.trigger('pause').attr('src','');
            } else {
               $content_el.attr('src',''); // remove src for anything else
               $content_iframe.attr('src',''); // remove src for anything else
            }
         }
      }
      $content_title.removeClass().find('#title').empty();
      setContentHeight();
      }
   }
   // CLOSE CONTENT
   function closeContent() {
      if ( $content_pane.hasClass('has_grid') ) {
         closeGrid(); // if has_grid, close grid
      } else if ( $content_pane.hasClass('has_hidden_grid') ) {
         showGrid(); // if has_hidden_grid, close content, show grid
      } else if ( ['has_font','has_image','has_pdf','has_video','has_iframe','has_dir','has_ignored'].some( c => $content_pane.attr('class').split(' ').indexOf( c ) >= 0 ) ) {
         closeAllContent();  // close content if content pane has one of these classes, except audio and grids
      } else { // close audio last of all
         closeAudio();
      }
      setContentHeight();
   }
   $content_close_btn.on('click', function(e) {
      e.preventDefault();
      e.stopPropagation();
      closeContent();
   });
 
   //***** RESET CONTENT (Reset button or Cmd/Ctrl + R) *****//
   function resetContent() {
      if ( $content_pane.attr('class') === '' ) { window.location = window.location.href } // reload page
      if ( $content_pane.hasClass('has_audio') ) { $audio.prop('currentTime', 0).trigger('pause'); }
      if ( $content_pane.hasClass('has_grid') ) { $grid_btn.click(); }
      if ( $content_pane.hasClass('has_font') ) { $content_font.css({'font-size':'1em'});}
      if ( $content_pane.hasClass('has_image') ) { $content_image.attr('data-image-scale-factor',1).find('img').removeClass('zoom_img').attr('style',''); }
      if ( $content_pane.hasClass('has_video') ) { $content_video.prop('currentTime',0).trigger('pause'); }
      if ( $content_pane.hasClass('has_iframe') || $content_pane.hasClass('has_dir') ) { $('.selected').find('a').click(); }
      setContentHeight();
   }
   $('#reload_btn').on('click', function(e) {
      e.preventDefault();
      e.stopPropagation();
      resetContent();
   });
 
   //***** SELECT ROWS *****//
   var prevRow = function(className) {
      return ( !$('.selected').length || !$('.selected').prevAll(':visible:not(.unchecked)').filter(className).length ) ? $('#tbody').find('tr').filter(className).last() : $('.selected').prevAll(':visible:not(.unchecked)').filter(className).first();
   };
   var nextRow = function(className) { // if nothing selected, or if no next row with classname, return first row with classname, else return next row with classname
      return ( !$('.selected').length || !$('.selected').nextAll(':visible:not(.unchecked)').filter(className).length ) ? $('#tbody').find('tr').filter(className).first() : $('.selected').nextAll(':visible:not(.unchecked)').filter(className).first();
   };
 
   //***** SELECT ROWS by typed string *****//
   var str = '', timer;
   function timeoutID() {
      timer = window.setTimeout( function() {
         str = '';
      }, 1500 );
   }
   function alphaNav(e) { // Select Dir_List row by typed string; Todo: select next row by nearest letter
      if (typeof timer == 'number' ) {
         window.clearTimeout( timer );
         timer = 0; // id
      }
      timeoutID();
      str += e.key
      $('#dir_list').find('td.name[data-value^="'+ str +'"]').first().find('a').click();
   }
 
   // Click Prev/Next Arrows
   function prevNextBtn(el) {
      let f = $.Event("keydown");
      if ( el.attr('id') === 'prev_btn' ) {
         f.key = 'ArrowLeft';
      }
      if ( el.attr('id') === 'next_btn' ) {
         f.key = 'ArrowRight';
      }
      $body.trigger(f);
   }
   $content_pane.on( 'click','#prev_btn, #next_btn', function(e) {
      e.stopPropagation();
      e.preventDefault();
      prevNextBtn( $(this) );
   });
	// Click grid button
   $sidebar_header.on('click', '#grid_btn, #show_font_grid, #show_image_grid', function(e) {
      makeGrids(e,$(this));
		showGrid();
   });
 
    // Click prev/next track buttons
    $('.prev_next_track_btn').on('click',function() {
        $(this).attr('id') === 'prev_track' ? playPrevNextTrack('ArrowLeft') : playPrevNextTrack('ArrowRight') ;
    });
 
   // SELECT ROWS prev/next media track with arrow keys
   function playPrevNextTrack(key) {
      let $key = key.key;
      $shuffle.find('input').prop('checked') === true ? shuffle() : null;
      $playing = $('.playing');
      let kind = $playing.attr('data-kind');
      if ( $body.hasClass('has_media') ) {
         if ( $playing.length === 0 ) { // if no media selected, select first shuffle or first media file
            if ( $shuffle.find('input').prop('checked') === true ) {
               clickRow( $('.audio').eq($count) );
            } else {
               switch ( $key ) {
                  case 'ArrowLeft': clickRow( $media.last() ); break;
                  case 'ArrowRight': clickRow( $media.first() ); break;
               }
            }
         }
         if ( $playing.length == 1 ) {
            if ( $shuffle.find('input').prop('checked') === true ) {
               selectThis( $('.audio').eq($count) );
               showContent( $('.audio').eq($count) );
               $shuffleList.length !== 0 ? playMedia('play') : null;
            } else {
               switch ( key ) {
                  case 'ArrowLeft':
                     if ( $playing.prevAll('.media[data-kind="'+ kind +'"]:not(.unchecked)').length === 0 ) {
                        clickRow( $dir_list_row.filter('.media[data-kind="'+ kind +'"]:not(.unchecked)').last() );
                     } else {
                        clickRow( $playing.prevAll('.media[data-kind="'+ kind +'"]:not(.unchecked)').first() );
                     }
                     break;
                  case 'ArrowRight':
                     if ( $playing.nextAll('.media[data-kind="'+ kind +'"]:not(.unchecked)').length === 0 && $loop.find('input').is(':checked') === false ) { // loop playback
                        selectThis( $dir_list_row.filter('.media[data-kind="'+ kind +'"]:not(.unchecked)').first() );
                        autoLoadCoverArt();
                        return true;
                     } else if ( $playing.nextAll('.media[data-kind="'+ kind +'"]:not(.unchecked)').length === 0 ) { // else click first media file
                        clickRow( $dir_list_row.filter('.media[data-kind="'+ kind +'"]:not(.unchecked)').first() );
                     } else {
                        clickRow( $playing.nextAll('.media[data-kind="'+ kind +'"]:not(.unchecked)').first() ); // else click next media file
                     }
                     break;
               }
            }
            playMedia('play');
         }
      }
   }
 
   // SELECT ROWS by arrow keys
   function leftRightArrowNavigation(key,kind) {
      if ( $body.hasClass('has_media') && $('.selected').hasClass('audio') && !$('.selected').hasClass('playing') ) { // play selected track (e.g., after up/down arrow)
         clickRow( $('.audio.selected') );
         playMedia('play');
      } else if ( $body.hasClass('has_media') && $('.selected').hasClass('audio')) { // play next audio track
         playPrevNextTrack(key);
         playMedia('play');
      } else { // select prev/next row of same sort kind
         if ( key === 'ArrowLeft' ) { clickRow( prevRow('[data-kind="'+ kind +'"]:visible') ); }
         if ( key === 'ArrowRight' ) { clickRow( nextRow('[data-kind="'+ kind +'"]:visible') ); }
         if ( $('.selected').hasClass('video') ) { playMedia('play') };
      }
   }
   function arrowNavigation(e) {
      let $key = e.key;
      let $selected = $('.selected');
      let kind = $('.selected').attr('data-kind') === undefined ? $dir_list.find('tbody tr:visible').first().attr('data-kind') : $('.selected').attr('data-kind');
      if ( $content_pane.hasClass('has_grid') ) { // Grid navigation: L/R arrow selects images and fonts only; U/D arrow clicks row.
         switch ( $key ) {
            case 'ArrowUp': clickRow( prevRow('.dir:visible,.file:visible') ); break;
            case 'ArrowDown': clickRow( nextRow('.dir:visible,.file:visible') ); break;
            case 'ArrowLeft':
               if ( $content_grid.hasClass('has_font_grid') ) {
                  selectThis( prevRow('.font:visible') );
               } else if ( $content_grid.hasClass('has_image_grid') ) {
                  selectThis( prevRow('.image:not(.ignore):visible') );
               } else {
                  selectThis( prevRow('.image:not(.ignore):visible,.font:visible') );
               }
               break;
            case 'ArrowRight':
               if ( $content_grid.hasClass('has_font_grid') ) {
                  selectThis( nextRow('.font:visible') );
               } else if ( $content_grid.hasClass('has_image_grid') ) {
                  selectThis( nextRow('.image:not(.ignore):visible') );
               } else {
                  selectThis( nextRow('.image:not(.ignore):visible,.font:visible') );
               }
               break;
         }
      } else {
         switch ( $key ) {
            case 'ArrowUp': // if audio player not visible, show and load audio when selected; else if audio player visible, select but don't load prev/next audio file.
               if ( prevRow('.dir:visible,.file:visible').hasClass('audio') ) {
                  closeAllContent(); // except audio and grids
                  if ( !$content_pane.hasClass('has_audio') ) {
                     clickRow( prevRow('.audio:visible') );
                     $('.selected:not(.audio)').removeClass('selected');
                  } else {
                     prevRow('.audio:visible').addClass('selected').siblings().removeClass('selected hovered');
                  autoLoadCoverArt();
                  }
               } else {
                  clickRow( prevRow('.dir:visible,.file:visible') );
               }
               break;
            case 'ArrowDown':
               if ( nextRow('.dir:visible,.file:visible').hasClass('audio') ) { // if next row is audio...
                  closeAllContent(); // except audio and grids
                  if ( !$content_pane.hasClass('has_audio') ) { // if audio player is closed, click next row to load and show file
                     clickRow( nextRow('.audio:visible') );
                     $('.selected:not(.audio)').removeClass('selected');
                  } else { // else simply select the next audio file without closing currently playing audio
                     nextRow('.audio:visible').addClass('selected').siblings().removeClass('selected hovered');
                     autoLoadCoverArt();
                  }
               } else {
                  clickRow( nextRow('.dir:visible,.file:visible') );
               }
               break;
            case 'ArrowLeft':
               leftRightArrowNavigation('ArrowLeft',kind);
               break;
            case 'ArrowRight':
               leftRightArrowNavigation('ArrowRight',kind);
               break;
         }
      }
      scrollThis('dir_list','selected');
      $content_pane.hasClass('has_grid') && $content_grid.find('.selected').length > 0 ? scrollThis('content_grid','selected') : null;
   }
 
   //***** CLICK & HOVER EVENTS for Content *****//
 
   // HOVER Grid Item
   $content_grid.on('mouseenter','> div:not(.selected)',function() {
      thisRow($dir_list.find('a[href*="'+ thisLink(this) +'"]')).addClass('hovered');
   }).on('mouseleave','> div:not(.selected)',function() {
      thisRow($dir_list.find('a[href*="'+ thisLink(this) +'"]')).removeClass('hovered');
   });
   // HOVER Dir_list_row and highlight corresponding grid item
   $dir_list_row.hover(function() {
      if ( $content_grid.is(':visible') ) {
         $content_grid.find('[href*="'+ thisLink(this) +'"]').closest('div').addClass('hovered');
      }
   }, function() {
      if ( $content_grid.is(':visible') ) {
         $content_grid.find('.hovered').removeClass('hovered');
      }
   });
   // CLICK grid item
   function gridItemClick(e,el) {
      e.preventDefault();
      clickThis($dir_list.find('a[href*="'+ thisLink(el) +'"]') );
   }
   $content_grid.on('click','div', function(e) {
      gridItemClick(e,$(this));
   });
 
   // CLICK Row
   function clickRow(row) { // Pause/Play audio if .selected = audio, else click row normally
      if ( thisRow(row).hasClass('playing') && !thisRow(row).hasClass('video') ) {
         playPauseMedia();
      } else {
         selectThis( thisRow(row) );
         showContent( thisRow(row) );
      }
      hideMenus();
   }
   // CLICK Row
   $dir_list_row.on('click','a', function(e) {
      e.preventDefault();
      e.stopPropagation();
      clickRow( $(this) );
   });
   // Click element anchor
   function clickThis(el) {
      el.find('a').length > 0 ? el.find('a').click() : el.click();
   }
   // DOUBLE-CLICK Row to open directory
   function doubleClickRow(row) {
      if ( row.hasClass('dir') ) {
         $query_prefs = getQueryPrefs();
         var $history = $query_prefs.get('history') === null ? '' : '+'+ $query_prefs.get('history');
         var $current_index = row.prevAll('.dir:visible:not(.ignore)').length;
         $history = $current_index + $history; // update history
         $query_prefs.delete('selected');
         $query_prefs.set('history',$history);
         updateQuery();
         window.location = row.find('a').attr('href') +'?'+ $query_prefs;
      }
   }
   $dir_list_row.filter('.dir').on('dblclick', function(e) {
      e.preventDefault();
      e.stopPropagation();
      doubleClickRow( $(this) );
   });
 
   //***** AUTOLOAD CONTENT: index files or files from the file shortcut list *****//
   function autoSelectFile() {
      if ( $UI_pref_selected !== '' ) {
         selectThis( $dir_list.find('tbody tr.dir:not(.invisible)').eq($UI_pref_selected) );
         showContent( $dir_list.find('tbody tr.dir:not(.invisible)').eq($UI_pref_selected) );
      } else if ( $UI_pref_file !== '' ) {
         clickThis( $dir_list_row.find('a:contains('+ $UI_pref_file +')') );
      } else if ( $body.hasClass('autoload_index_files') && $dir_list.find( 'a[href*="/index."]').length > 0 ) { // else load index file
         clickThis( $dir_list.find('a[href*="/index."]') );
      } else if ( $body.hasClass('autoload_media') && $body.hasClass('has_media') ) { // else if audio and images, load cover art
         clickThis( $dir_list.find('.audio,.video').first() );
      } else { // else select first non-media item
        // clickThis( $dir_list.find('tbody tr:not(.media):not(.invisible)').first() );
      }
      scrollThis('dir_list','selected');
      scrollThis('dir_list','playing');
   }
   autoSelectFile();
 
   // Autoload Cover Art
   function autoLoadCoverArt() { // autoload cover art for audio if dir contains audio and images, and audio is loaded and non-image content is not loaded
      if ( !$body.hasClass('autoload_media') ) {
          return;
      } else if ( $body.hasClass('has_audio') && $body.hasClass('has_images') && $content_pane.hasClass('has_audio') && $content_image.siblings().attr('src') == undefined ) {
         var $cover;
         var $this_ext;
         const $image_titles = ['cover','front'];
         for ( let i = 0; i < $image_titles.length; i++ ) { // select first image whose title begins with $image_titles[i] or which contains $image_titles[i].
            $cover = $dir_list.find('.image').find('td.name[data-value^="'+ $image_titles[i] +'"]:not([data-value*="back"])').parent('tr').first() || $dir_list.find('.image').find('td.name[data-value*="'+ $image_titles[i] +'"]:not([data-value*="back"])').parent('tr').first();
            if ( $cover.length === 1 ) {
               showContent($cover);
               $title.empty().text( $cover.find('a').text() );
               setDimensions($cover);
               break;
            } else {
               showContent( $dir_list.find('.image').first() ); // otherwise show the first image
               $title.empty().append($dir_list.find('.image').first().find('a').text() );
               setDimensions($dir_list.find('.image').first());
               break;
            }
         }
      }
   }
   // File shortcuts menu: autoload directory, then auto-select file
   function showFileShortcut(item) {
      $this_link = thisLink(item);
      window.location = $this_link.slice( 0, $this_link.lastIndexOf('/') );
   }
 
   //***** KEYBOARD EVENTS *****//
   $body.on('keydown',$dir_list,function(e) {
      setContentHeight();
      $(':focus').blur(); // Need this to able to select grid items after clicking close button (or other buttons).
      let $dir_list_row = $dir_list.find('tbody tr:not(.unchecked)').filter(':visible');
      let $selected = $dir_list.find('tbody tr.selected');
      let $selected_href = thisLink($selected);
      let $playing = $dir_list_row.filter('.playing');
      var $time;
 
      switch ( e.key ) {
 
         case 'ArrowUp':
            if ( (navigator.platform.match("Mac") ? e.metaKey : e.ctrlKey) ) { // Cmd/Ctrl + up arrow = go to parent directory
               $('#parent_dir_menu a').trigger('click');
               break;
            }
            if ( $('*[contentEditable="true"]').is(':focus') ) { // Allow arrow navigation within content_editable elements
               return;
            }
            e.preventDefault();
            arrowNavigation(e);
            break;
 
         case 'ArrowDown':
            if ( (e.ctrl || e.metaKey) && $selected.hasClass('app') && $settings.apps_as_dirs === false ) { // Ignore Cmd/Ctrl + arrow or if focused element is content editable or open dir
               return;
            } else if ( $('*[contentEditable="true"]' ).is(':focus') ) {
               return;
            } else if ( (e.ctrl || e.metaKey) && $selected.hasClass('dir') ) {
               $selected.find('a').trigger('dblclick');
               break;
            }
            e.preventDefault();
            arrowNavigation(e);
            break;
 
         case 'ArrowLeft':
            if ( (e.ctrl || e.metaKey) || (e.ctrl && e.metaKey) ) {
               return;
            } else if ( $('*[contentEditable="true"]').is(':focus') ) { // Ignore Cmd/Ctrl + arrow or if focused element is content editable
               return;
            }
            if ( !e.metaKey && (e.altKey && e.shiftKey) || e.altKey ) { // Skip media -30s/-10s
               mediaSkip(e);
               return;
            } else {
               arrowNavigation(e);
            }
            break;
 
         case 'ArrowRight':
            if ( e.metaKey && !e.altKey && !e.shiftKey && $selected.hasClass('dir') ) { // Open dir with Cmd/Ctrl + Right Arrow
               $selected.find('a').trigger('dblclick');
               return;
            }
            if ( (e.ctrl || e.metaKey) || (e.ctrl && e.metaKey) ) { // Ignore Cmd/Ctrl + arrow or if focused element is content editable
               return;
            } else if ( $('*[contentEditable="true"]').is(':focus') || $selected.hasClass('dir ignore') ) {
               return;
            }
            if ( !e.metaKey && (e.altKey && e.shiftKey) || e.altKey ) { // Skip audio 30s/10s: Opt-Shift-Arrow/Opt-Arrow
               mediaSkip(e);
               return;
            } else {
               arrowNavigation(e);
            }
            break;
 
         case ' ': // space
            if ( !e.metaKey && !e.ctrlKey && !e.altKey ) {
               alphaNav(e);
            }
            if ( $content_pane.hasClass('has_audio') || $content_pane.hasClass('has_video') ) { // Play/pause media (space bar)
               e.preventDefault();
               playPauseMedia();
            }
            break;
 
         case 'Enter': // Open directories (or ignore)
            if ( $selected.hasClass('app') && $settings.apps_as_dirs === false ) {
               break;
            } else {
               if ( $selected.hasClass('dir') ) {
                  $selected.find('a').trigger('dblclick');
               } else if ( $content_pane.hasClass('has_grid') ) {
                  $body.find('#dir_list').find('.selected a').click();
               } else {
                  clickThis(thisRow($selected));
                  if ( $selected.hasClass('media') && !$content_pane.hasClass('has_grid') ) { // Use return to play/pause media
                     let e = new Event('keydown');
                     e.key = ' ';
                  }
               }
            }
            break;
 
            // Alphabetical navigation
         case 'A': case 'B': case 'C': case 'D': case 'E': case 'F': case 'G': case 'H': case 'I': case 'J': case 'K': case 'L': case 'M': case 'N': case 'O': case 'P': case 'Q': case 'R': case 'S': case 'T': case 'U': case 'V': case 'W': case 'X': case 'Y': case 'Z':
         case 'a': case 'b': case 'c': case '': case 'e': case 'f': case '': case 'h': case 'i': case 'j': case 'k': case 'l': case 'm': case 'n': case '': case 'p': case 'q': case '': case 's': case 't': case 'u': case 'v': case '': case 'x': case 'y': case 'z':
         case '0': case '1': case '2': case '3': case '4': case '5': case '6': case '7': case '8': case '9': case '-': case '`': case '~': case '!': case '@': case '#': case '$': case '%': case '^': case '&': case '*': case '(': case ')': case '=': case '+': case '[': case ']': case '{': case '}': case '\\': case '|': case '/': case '?': case '–': case '—': case '\'': case '\"': case '“': case '”': case '‘': case '’': case '…': case 'π':
            //            case 'α': case 'β': case 'γ': case 'δ': case 'ε': case 'ζ': case 'η': case 'θ': case 'ι': case 'κ': case 'λ': case 'μ': case 'ν': case 'ξ': case 'ο': case 'π': case 'ρ': case 'ς': case 'σ': case 'τ': case 'υ': case 'φ': case 'χ': case 'ψ': case 'ω': case 'ϑ': case 'ϒ': case 'ϖ':
            //            case 'Α': case 'Β': case 'Γ': case 'Δ': case 'Ε': case 'Ζ': case 'Η': case 'Θ': case 'Ι': case 'Κ': case 'Λ': case 'Μ': case 'Ν': case 'Ξ': case 'Ο': case 'Π': case 'Ρ': case 'Σ': case 'Σ': case 'Τ': case 'Υ': case 'Φ': case 'Χ': case 'Ψ': case 'Ω': case 'Θ': case 'ϒ': case 'Π':
         case '∫': case '∂': case 'ƒ': case '©': case '˙': case '∆': case '˚': case 'µ': case 'π': case '®': case 'ß': case '†': case '√': case '∑': case '≈': case '¥': case 'Ω': case '¡': case '™': case '£': case '¢': case '∞': case '§': case '¶': case '•': case 'ª': case 'º': case '≠':
         case '⁄': case '€': case '‹': case '›': case 'ﬂ': case '‡': case '°': case '·': case '‚': case '±': case '¯': case '˘': case '¿': case '`':
         case 'ı': case '': case '´': case '': case '˝': case 'ˆ': case '': case '˜': case '‰': case 'ˇ': case '¨': case '◊': case '„': case '˛': case '¸':
            if ( !e.metaKey && !e.ctrlKey && !e.altKey ) {
               alphaNav(e);
            }
            break;
 
         case 'd': // Cmd/Ctrl + D: Toggle Details
            if ( (navigator.platform.match("Mac") ? e.metaKey : e.ctrlKey) ) {
               e.preventDefault();
               e.stopPropagation();
               $details_btn.click();
            }
            if ( !e.metaKey && !e.ctrlKey && !e.altKey ) {
               alphaNav(e);
            }
            break;
 
         case 'g': // Cmd/Ctrl + G: Show image Grid
            if ( (navigator.platform.match("Mac") ? e.metaKey : e.ctrlKey) ) {
               e.preventDefault();
               e.stopPropagation();
               $grid_btn.click();
            }
            if ( !e.metaKey && !e.ctrlKey && !e.altKey ) {
               alphaNav(e);
            }
            break;
 
         case 'i': // Cmd/Ctrl + I: Toggle Invisibles
            if ( (navigator.platform.match("Mac") ? e.metaKey : e.ctrlKey) ) {
               e.preventDefault();
               e.stopPropagation();
               $inv_checkbox.find('input').click();
            }
            if ( !e.metaKey && !e.ctrlKey && !e.altKey ) {
               alphaNav(e);
            }
            break;
 
         case 'o': // Cmd/Ctrl + Shift + O: Open selected item in new window
            if ( !e.metaKey && !e.ctrlKey && !e.altKey ) {
               alphaNav(e);
            }
            if ( (navigator.platform.match("Mac") ? e.metaKey : e.ctrlKey) && e.shiftKey ) {
               window.open($selected_href);
            }
            break;
 
         case 'r': // Cmd/Ctrl + Shift + R: Refresh
            if ( (navigator.platform.match("Mac") ? e.metaKey : e.ctrlKey) ) {
               e.preventDefault();
               e.stopPropagation();
               $content_reload_btn.find('button').click();
            }
            if ( !e.metaKey && !e.ctrlKey && !e.altKey ) {
               alphaNav(e);
            }
            break;
 
         case 'w': // Close content pane if Close button visible with Cmd/Crtl + W
            // Doesn't work in some browsers: can't override default keybinding
            if ( (navigator.platform.match("Mac") ? e.metaKey : e.ctrlKey) && ( $content_pane.hasClass('[class^="has_"]') || $content_pane.hasClass('has_grid') ) ) {
               e.preventDefault();
               e.stopPropagation();
               $content_close_btn.find('button').click();
            }
            if ( !e.metaKey && !e.ctrlKey && !e.altKey ) {
               alphaNav(e);
            }
            break;
 
         case '.': // Increase previewed content size
            if ( !e.metaKey && !e.ctrlKey && !e.altKey ) {
               alphaNav(e);
            }
            if ( (navigator.platform.match("Mac") ? e.metaKey : e.ctrlKey) && e.shiftKey ) {
               $('#increase').click();
            }
            break;
 
         case ',': // Decrease previewed content size
            if ( !e.metaKey && !e.ctrlKey && !e.altKey ) {
               alphaNav(e);
            }
            if ( (navigator.platform.match("Mac") ? e.metaKey : e.ctrlKey) && e.shiftKey ) {
               $('#decrease').click();
            }
            break;
 
         case 'tab':
            break;
 
      } // end switch
   });
   // ***** END KEYBOARD EVENTS ***** //
 
   // ***** GRID SETUP ***** //
   // Create Font Grid Items
   const fontGridItems = function() {
      var $font_grid_items_arr = [];
      $dir_list_row.filter('.font').each(function() {
 
         let $this_link = $(this).find('a').attr('href');
         let $font_family = thisText($(this));
         let $display_name = $(this).find('a').text().slice( 0,$font_family.lastIndexOf('.') ).replace(/[_|-]/g,' ');
 
         if ( $font_family_arr.indexOf($font_family) == -1 ) {
            $font_family_arr.push($font_family);
            $font_preview_styles.append('@font-face { font-family: "'+ $font_family +'"; src: url("'+ $this_link +'"); }'); // only add style if it doesn't exist
         }
         $font_grid_item_el.empty().append('<p>'+ $display_name +'</p><h2 style=\'font-family: "'+ $font_family +'"\'; ><a href="'+ $this_link +'">'+ $display_name +'</a></h2>' );
         $font_grid_items_arr.push($font_grid_item_el.clone());
      });
      return $font_grid_items_arr;
   };
   // Create Image Grid Items
   const imageGridItems = function() {
      var $image_grid_items_arr = [];
      $dir_list_row.filter('.image').each(function() {
 
         let $this_link = thisLink(this);
         let $this_ext = thisExt(this);
         let exts = $row_types.image.filter( ext => $.inArray(ext, $row_settings.ignore) == -1 );
         let $display_name = $this_link.slice($this_link.lastIndexOf('/') + 1).replace(/[_|-]/g,' ');
 
         if ( $.inArray( $this_ext, exts ) > -1 ) { // if this row file ext is in the image extension array
            $image_grid_item_el.empty().append('<a href="'+$this_link+'"><img src="'+$this_link+'" title="'+$display_name+'" /></a>');
            $image_grid_items_arr.push( $image_grid_item_el.clone() );
         }
      });
      return $image_grid_items_arr;
   };
   // Make Grids
   function makeGrids(e,el) {
      e.stopPropagation();
      closeGrid();
      $content_pane.removeClass('has_hidden_grid').addClass('has_grid');
      if ( el.attr('id') === 'grid_btn' ) {
	     $title.removeClass();
         fontGridItems().length === 0 ? $content_grid.addClass('has_image_grid') : $content_grid.addClass('has_grid');
         $content_grid.append( imageGridItems(), fontGridItems() );
      } else if ( el.attr('id') === 'show_font_grid' ) {
	      $title.removeClass().addClass('font_grid');
         $content_grid.addClass('has_font_grid');
         $content_grid.append( fontGridItems() );
      } else {
	      $title.removeClass().addClass('image_grid');
         $content_grid.addClass('has_image_grid');
         $content_grid.append( imageGridItems() );
      }
   }
 
   // ***** SCALE PREVIEWED IMAGES & FONTS ***** //
   var $em = parseInt(getComputedStyle(document.body).fontSize); // pts/em
   var $font_incr = 1.125; // scale factor for font size increase/decrease
   var $image_incr = 1.125;
   var $image_width;
   var $image_height;
   var $image_scale_factor;
   var $image_grid_item_size;
   var $grid_scale_factor;
 
   var fontSize = function(el) {
      return parseFloat(el.css('font-size'));
   };
   // Scale Fonts
   function scaleFonts(incr, y) {
      if ( y === -1 ) { incr = 1/incr; }
      if ( $content_pane.hasClass('has_grid') && ( $content_grid.hasClass('has_font_grid') || $content_grid.hasClass('has_grid') ) ) {
         $content_grid.css({'font-size':( fontSize($content_grid)/$em * incr ) +'em'});
         return;
      }
      if ( $content_pane.hasClass('has_font') ) {
         $content_font.css({'font-size':( fontSize($content_font)/$em * incr ) +'em'});
         return;
      }
   }
   // Scale Images
   function scaleImages(incr, y) {
      if (y === -1 ) { incr = 1/incr; }
      if ( $content_pane.hasClass('has_image') && !$content_pane.hasClass('has_grid') ) {
         $image_width = parseFloat( $content_image.find('img').width() ) * incr; // increment image size
         $image_height = parseFloat( $content_image.find('img').height() ) * incr; // increment image size
         $image_scale_factor = parseFloat( $content_image.attr('data-image-scale-factor') ); // get scale factor
 
         $content_image.attr('data-image-scale-factor', parseFloat( $image_scale_factor ) * incr ).find('img').removeClass('zoom_img').css({'width':$image_width +'px', 'max-width':'none', 'max-height':'none','top':'0','transform':'translateY(0)'});
 
         $content_image.scrollLeft( ( $image_width - $(window).width() )/2 ) ;
         if ( ( ( $image_height - $(window).height() )/2 ) > 0 ) {
            $content_image.scrollTop( ( $image_height - $(window).height() )/2 );
         }
         return;
      }
      if ( $content_pane.hasClass('has_grid') && ( $content_grid.hasClass('has_image_grid') || $content_grid.hasClass('has_grid') ) ) {
         $image_grid_item_size = parseFloat( $('.image_grid_item').width() * incr);
         $grid_scale_factor = parseFloat( $content_grid.attr('data-grid-scale-factor') );
 
         $content_grid.attr('data-grid-scale-factor', parseFloat( $grid_scale_factor ) * incr ).css({'grid-template-columns':'repeat(auto-fit, minmax('+ ($image_grid_item_size) +'px, 1fr))', 'grid-template-rows':'repeat(auto, minmax('+ ($image_grid_item_size) +'px))' });
         $content_grid.find('.image_grid_item').css({'width':$image_grid_item_size +'px', 'height':$image_grid_item_size +'px'}); // grid items are square, so width = height
         $content_grid.find('img').css({'max-width':( $image_grid_item_size - $image_grid_item_size/8 ) +'px', 'max-height':( $image_grid_item_size - $image_grid_item_size/8) +'px'});
         return;
      }
   }
   // Scale Fonts and Images
   function scalePreviewItems(y) { // combine scaling into one function
      scaleImages( $image_incr, y );
      scaleFonts( $font_incr, y );
   }
   // Scale Content
   $content_scale.on('click','span',function() {
      if ( $(this).attr('id') === 'increase' ) {
         scalePreviewItems(1);
      }
      if ( $(this).attr('id') === 'decrease' ) {
         scalePreviewItems(-1);
      }
   });
   // Zoom Images on click
   function zoomImage(x,e) {
      $this_link = $(x).attr('src');
      var $offset = $(x).offset();
      var $this_width = $(x).width();
      var $this_height = $(x).height();
 
      $(x).toggleClass('zoom_img');
      if ( $(x).attr('style') !== '' || $(x).attr('style') !== undefined ) {
         $(x).attr('style','');
      }
      if ( $this_link !== undefined ) {
         getDimensions( $this_link, function( width, height ) {
            $content_image.scrollLeft( (e.pageX - $offset.left) * width/($this_width + 13) - ( e.pageX - $offset.left ) - 52 ) ;
            $content_image.scrollTop( (e.pageY - $offset.top) * height/($this_height + 13) - ( e.pageY - $offset.top ) - 52 );
         });
      }
   }
   $content_image.on('click', 'img', function(e) {
      zoomImage( this,e )
   });
   // ***** END SCALE PREVIEW ITEMS ***** //
 
   // ***** AUDIO CONTENT ***** //
 
   var $count = 0;
   var $playlist;
   var $shuffleList = [];
   var $next;
   var $task;
   // Update Playlist
   function updatePlaylist() {
      $playlist = [];
      $dir_list_row.filter('.audio:not(.unchecked)').each(function() {
         $this_link = thisLink(this);
         $playlist.push($this_link);
      });
      return $playlist;
   }
   // Initialize Shuffle List
   function initShuffleList() {
      updatePlaylist();
      $shuffleList = [];
      for ( let i = 0; i < $playlist.length; i += 1 ) {
         $shuffleList.push(i);
      }
      return $shuffleList;
   }
   // Update Play Count
   function updateCount() {
      $count = $playing.index('.audio:not(.unchecked)');
   }
   // Check/Uncheck Audio/Video Files
   function toggleChecked(e) {
      e.stopPropagation();
      $(this).blur();
      thisRow(this).toggleClass('unchecked');
      updateCount();
      updatePlaylist();
      initShuffleList();
   }
   $dir_list_row.filter('.media').on('click','input', toggleChecked );
   // Check/Uncheck all Audio/Video Files
   function toggleAllChecked(e) {
      e.stopPropagation();
      $dir_list_row.find('input').trigger('click');
      updatePlaylist();
      initShuffleList();
   }
   $dir_list.find('#play_toggle').on('click', toggleAllChecked );
 
   // Is Playing
   function isPlaying(el) {
      return (el.get(0).currentTime > 0 && !el.get(0).paused && !el.get(0).ended);
   }
   // Play Media
   function playMedia(task) {
      $('.playing').hasClass('audio') ? $audio.trigger(task) : $content_video.trigger(task);
   }
   // Skip media tracks +/-10/30 seconds
   function mediaSkip(e) {
      let factor = e.key === 'ArrowLeft' ? -1 : 1;
      if ( e.altKey && e.shiftKey ) {
         n = 30;
      } else if ( e.altKey ) {
         n = 10;
      }
      let $media = $('.playing').hasClass('audio') ? $audio : $content_video;
      let $time = $media.prop('currentTime');
      $media.prop('currentTime', $time + factor*(n));
   }
 
   // Play/Pause Audio/Video
   function playPauseMedia() {
      if ( $content_pane.hasClass('has_audio') ) {
         isPlaying($audio) ? $audio.trigger('pause') : $audio.trigger('play');
      }
      if ( $content_pane.hasClass('has_video') ) {
         isPlaying($content_video) ? $content_video.trigger('pause') : $content_video.trigger('play');
      }
   }
   // Play Next Track
   function playPrevNextTrackBtn(el) {
      e = $.Event("keydown");
      e.key = el.attr('id') === "prev_track" ? 'ArrowLeft' : 'ArrowRight';
      playPrevNextTrack(e);
   }
   // Prev/Next Track buttons
   $('.prev_next_track_btn').on( 'click', function() { playPrevNextTrackBtn( $(this) ); });
 
   // Toggle Shuffle Play
   function toggleShuffle() {
      let $rand = Math.floor( Math.random() * ($media.length) );
      if ( $shuffle.find('input').prop('checked') ) {
         ( !isPlaying($audio) && !isPlaying($content_video) ) ? clickThis( $media.eq($rand) ) : null; // if no media playing, select random track; if media playing, do nothing, then shuffle.
         updatePlaylist();
         initShuffleList();
         $count = Math.floor( Math.random() * $shuffleList.length );
      }
   }
   $shuffle.on('click', toggleShuffle );
 
   // Shuffle Play
   function shuffle() {
      if ( $shuffleList.length <= 1 && $loop.find('input').prop('checked') ) { // If loop is checked, and all songs have been shuffled...
         initShuffleList();
         $next = Math.floor( Math.random() * $shuffleList.length ); // choose a random index number from the remaining unplayed songs,
         $count = $shuffleList[ $next ]; // set the playing $count to the index
      } else if ( $shuffleList.length === 0 ) { // else if all songs have been shuffled, select the first song and stop;
         $count = 0;
      } else {
         $next = Math.floor( Math.random() * $shuffleList.length ); // else choose a random index number from the remaining unplayed songs,
         $count = $shuffleList[ $next ]; // set the playing $count to the index
         $shuffleList.splice( $next, 1 ); // remove the indexed value from the unplayed list,
      }
   }
   // Initialize Audio
   function initMedia() {
      $('#audio, #content_video').on('ended', function() {
         playPrevNextTrack('ArrowRight');
         scrollThis('dir_list','playing');
      });
   }
   initMedia();
   // ***** END AUDIO CONTENT ***** //
 
   // ***** OTHER FUNCTIONS ***** //
 
   // Resize Sidebar/Content Pane
   function resizeSidebar(f) {
      f.stopPropagation();
      var $startX = f.pageX;
      var $sidebar_width = $sidebar_wrapper.width();
      var $window_width = window.innerWidth;
      $sidebar_overlay.show(); // needed to prevent interactions with iframe
      $content_overlay.show(); // needed to prevent interactions with iframe
      $sidebar_wrapper.css({'-webkit-user-select':'none','-moz-user-select':'none','user-select':'none'});
 
      $(document).on('mousemove',function(e) {
         e.stopPropagation();
         var $deltaX = e.pageX - $startX;
         if ( e.pageX > 200 && e.pageX < $window_width - 200 ) {
            $sidebar_wrapper.css({'width':$sidebar_width + $deltaX + 'px'});
            $content_pane.css({'width':($window_width - $sidebar_width) - $deltaX + 'px'});
         }
         setContentHeight();
      });
      $(document).on('mouseup',function() {
         $sidebar_overlay.hide(); // needed to prevent interactions with iframe
         $content_overlay.hide();
         $sidebar_wrapper.css({'-webkit-user-select':'auto','-moz-user-select':'auto','user-select':'auto'});
         $(document).off('mousemove');
         $sidebar_width = $sidebar_wrapper.width();
         $query_prefs = getQueryPrefs();
         $query_prefs.set('width',$sidebar_width);
         updateQuery();
      });
   }
   $handle.on('mousedown', resizeSidebar );
 
   // EXPORT SETTINGS
   let $settings_string = unescape( $settings.toSource() );
   $settings_string = $settings_string.replace('JSON.parse\(unescape\("\{','').replace('\}"))','').replace(/\/",/g,'",').replace(/\/"],/g,'"],').replace(/"(\w+?)":/g,'\n\n$1:\t');
 
   var save = function(filename, data) {
      var blob = new Blob([data], {type: 'text/html'});
      if ( window.navigator.msSaveOrOpenBlob ) {
         window.navigator.msSaveBlob( blob, filename );
      } else {
         var elem = window.document.createElement('a');
         elem.href = window.URL.createObjectURL(blob);
         elem.download = filename;
         document.body.appendChild(elem);
         elem.click();
         document.body.removeChild(elem);
         URL.revokeObjectURL(blob);
      }
   }
 
   $export_settings.on('click','a',function(e) {
      e.preventDefault();
      save("settings.txt",$settings_string);
   });
})();