About boxplusx

boxplusx illustrates HTML visualization capabilities using plain JavaScript and CSS3.


How to use


The following snippet imports minified boxplusx CSS and JavaScript files, compatible with all supported browsers:
<!-- Style definitions -->
<link rel="stylesheet" type="text/css" href="engine/css/boxplusx.min.css" />

<!-- Minified script -->
<script type="text/javascript" src="engine/js/boxplusx.min.js" defer></script>


The following snippet imports boxplusx CSS and JavaScript original source files:
<!-- Style definitions -->
<link rel="stylesheet" type="text/css" href="engine/css/boxplusx.css" />

<!-- Uncompressed script compliant with ECMAScript 6 -->
<script type="text/javascript" src="engine/js/boxplusx.js" defer></script>
JavaScript code is written in ECMAScript 6, which may not be compatible with older browsers, such as Internet Explorer. When minified into production code, JavaScript is cross-compiled to ECMAScript 5, which even older browsers understand. A polyfill script helps if you need to debug in older browsers:
<!-- Polyfill definitions for ECMAScript 6 functions targeting old browsers -->
<script type="text/javascript">
if (/MSIE \d|Trident.*rv:/.test(navigator.userAgent)) {
    document.write('<scr' + 'ipt src="engine/js/polyfill.js" defer><\/scr' + 'ipt>');

<!-- Uncompressed script compliant with ECMAScript 6 -->
<script type="text/javascript" src="engine/js/boxplusx.js" defer></script>


Standalone images

Sample image

Image gallery

Sample image 1 Sample image 2 Sample image 3

Sample image 4 Sample image 5 Sample image 6 Sample image 7 Sample image 8 Sample image 9 Sample image 10 Sample image 11 Sample image 12
boxplusx includes an initialization script that runs when the page has loaded (or more precisely, when the page structure is available, i.e. DOMContentLoaded). This organizes all anchors that have the same rel attribute value into a gallery. (Attribute values that do not start with the string boxplusx- are ignored to let you opt out of this behavior for certain images.) When you click any item in the gallery, the pop-up window opens and lets you navigate in between images in the same gallery.

Set custom parameters



Sample QuickTime video Sample ogg video Sample YouTube video


The Not So Short Introduction to LATEX2ε

Notice how the URL has name=value parameters like view=Fit after the # sign, which are passed intact to the PDF reader, and let you customize how the PDF appears, see Parameters for Opening PDF Files for a full list.

External content

External content is shown in an HTML iframe.

Website of the United Nations Map of Budapest University of Technology and Economics, and surrounding area

Inline content

Inline content is shown in the context of the current window, in an HTML div. You can pass parameters to boxplusx (such as preferred width and height) using the extended fragment identifier syntax (with a hash-bang): #element-name!key1=value1&key2=value2. Inline content for these elements has been embedded in this page, using CSS display: none, a technique you can also apply.

Unavailable content

A special (resizable) image is shown if the content is not available. The image can be customized in CSS.

How to use and contribute

boxplusx is hosted on Bitbucket, download or check out to start working or contribute.

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