Hello,
to show how easy the included jquery in WB 2.8.1 can be used in modules, here the howto to integrate lightbox in the module "Another Image Gallery".
Basically you only have to add one file (frontend.js) with the lightbox scripts in it, add the css to frontend.css and adapt on value in view.php of another image gallery.
Step 1:download the attached frontent.zip, unzip it to frontend.js and upload the "frontend.js" to modules/imagegallery.
Step 2:download the attached images.zip, unzip it to images and upload the images folder with the five images in it to modules/imagellery
Step 3:add the following css at the end of modules/imagegallery/frontend.css
/**
* jQuery lightBox plugin
* This jQuery plugin was inspired and based on Lightbox 2 by Lokesh Dhakar (http://www.huddletogether.com/projects/lightbox2/)
* and adapted to me for use like a plugin from jQuery.
* @name jquery-lightbox-0.5.css
* @author Leandro Vieira Pinho - http://leandrovieira.com
* @version 0.5
* @date April 11, 2008
* @category jQuery plugin
* @copyright (c) 2008 Leandro Vieira Pinho (leandrovieira.com)
* @license CC Attribution-No Derivative Works 2.5 Brazil - http://creativecommons.org/licenses/by-nd/2.5/br/deed.en_US
* @example Visit http://leandrovieira.com/projects/jquery/lightbox/ for more informations about this jQuery plugin
*/
#jquery-overlay {
position: absolute;
top: 0;
left: 0;
z-index: 90;
width: 100%;
height: 500px;
}
#jquery-lightbox {
position: absolute;
top: 0;
left: 0;
width: 100%;
z-index: 100;
text-align: center;
line-height: 0;
}
#jquery-lightbox a img { border: none; }
#lightbox-container-image-box {
position: relative;
background-color: #fff;
width: 250px;
height: 250px;
margin: 0 auto;
}
#lightbox-container-image { padding: 10px; }
#lightbox-loading {
position: absolute;
top: 40%;
left: 0%;
height: 25%;
width: 100%;
text-align: center;
line-height: 0;
}
#lightbox-nav {
position: absolute;
top: 0;
left: 0;
height: 100%;
width: 100%;
z-index: 10;
}
#lightbox-container-image-box > #lightbox-nav { left: 0; }
#lightbox-nav a { outline: none;}
#lightbox-nav-btnPrev, #lightbox-nav-btnNext {
width: 49%;
height: 100%;
zoom: 1;
display: block;
}
#lightbox-nav-btnPrev {
left: 0;
float: left;
}
#lightbox-nav-btnNext {
right: 0;
float: right;
}
#lightbox-container-image-data-box {
font: 10px Verdana, Helvetica, sans-serif;
background-color: #fff;
margin: 0 auto;
line-height: 1.4em;
overflow: auto;
width: 100%;
padding: 0 10px 0;
}
#lightbox-container-image-data {
padding: 0 10px;
color: #666;
}
#lightbox-container-image-data #lightbox-image-details {
width: 70%;
float: left;
text-align: left;
}
#lightbox-image-details-caption { font-weight: bold; }
#lightbox-image-details-currentNumber {
display: block;
clear: left;
padding-bottom: 1.0em;
}
#lightbox-secNav-btnClose {
width: 66px;
float: right;
padding-bottom: 0.7em;
}
Step 4:Change line 61 in /modules/imagegallery/view.php from
$inline = true;
to
$inline = false;
Step 5:activate jquery in the index.php of your template by changing the following code from
<?php
if(function_exists('register_frontend_modfiles')) {
register_frontend_modfiles('css');
register_frontend_modfiles('js');
} ?>
to:
<?php
if(function_exists('register_frontend_modfiles')) {
register_frontend_modfiles('css');
register_frontend_modfiles('jquery');
register_frontend_modfiles('js');
} ?>
(!have a look that jquery is loaded before js!)
That's all

Have fun with your "new" imagegallery with lightbox.
Matthias
Edit: added forgotten images folder