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diff --git a/doc/backends/deckjs/deck.js/extensions/split/README.md b/doc/backends/deckjs/deck.js/extensions/split/README.md
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+
+deck.split.js
+==============
+
+`deck.split.js` is a deckjs extension that helps you split long slide into
+multiple small slides.
+
+
+Installation 
+------------
+
+Just drop the whole repo into deck.js's `extensions` directory, then include
+the script in your slide.
+
+
+Usage
+-----
+
+To split a long slide, you need to indicate position inside original slide by
+adding following line:
+
+```html
+<div style="page-break-after:always"></div>
+```
+
+Indeed, it could be any tag set with `page-break-after:always` style. Every
+time you add this line, a new slide with the same title will be created, so you
+can split your slide into pieces as much as you want.
+
+
diff --git a/doc/backends/deckjs/deck.js/extensions/split/deck.split.js b/doc/backends/deckjs/deck.js/extensions/split/deck.split.js
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+++ b/doc/backends/deckjs/deck.js/extensions/split/deck.split.js
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+/*!
+Deck JS - deck.split
+Copyright (c) 2012 Qingping Hou <dave2008713@gmail.com>
+                   about.houqp.me
+Dual licensed under the MIT license and GPL license.
+https://github.com/imakewebthings/deck.js/blob/master/MIT-license.txt
+https://github.com/imakewebthings/deck.js/blob/master/GPL-license.txt
+*/
+
+/*
+This module splits a long slide into multiple slides.
+*/
+(function($, deck, undefined) {
+	var $d = $(document);
+
+	createEmptySlide = function(title_el) {
+		slide = $(document.createElement('section'));
+		slide.addClass('slide').append(title_el.clone());
+		return slide;
+	};
+
+	$d.bind('deck.beforeInit', function() {
+		$(".slide").each( function(i, slide) {
+			/* each slide */
+			var is_split = false,
+			prev_slide = $(slide),
+			/* extract title which will be added to each new slides */
+			title_el = prev_slide.children('h2'),
+			tmp_slide = createEmptySlide(title_el);
+
+			$(slide).children().each(function() {
+				/* for each element inside original slide */
+				var el = $(this);
+
+				if (el.css('page-break-after') == 'always') {
+					if (is_split) {
+						tmp_slide.insertAfter(prev_slide);
+						prev_slide = tmp_slide;
+						tmp_slide = createEmptySlide(title_el);
+					}
+					else {
+						/* find the first page break */
+						is_split = true;
+					}
+				}
+				else {
+					if (is_split) {
+						tmp_slide.append(el);
+					}
+				}
+			})
+			/* add remaining elements to a new slides */
+			if (is_split) {
+				tmp_slide.insertAfter(prev_slide);
+			}
+		});
+	})
+})(jQuery, 'deck');
+