renamed to reveal.js, many new features, and upgraded to v1.0

css/main.css

@@ -1,4 +1,6 @@
 /**
+ * Main styles of reveal.js 
+ *
  * @author Hakim El Hattab
  */
 
@@ -20,33 +22,32 @@
  *********************************************/
 
 html, body {
+	position: relative;
 	padding: 0;
 	margin: 0;
-	overflow: hidden;
+	overflow-x: hidden;
+	overflow-y: auto;
 	
-	font-family: 'Crimson Text', Times, 'Times New Roman', serif;
+	font-family: 'Lato', Times, 'Times New Roman', serif;
 	font-size: 36px;
+	font-weight: 200;
+	letter-spacing: -0.02em;
 	
-	background: #fff;
-	color: #222;
+	background: #111;
+	color: #eee;
 	
 	width: 100%;
 	height: 100%;
-	
-	background-image: -webkit-gradient(
-		radial, 
-		50% 50%, 0, 
-		50% 50%, 1000, 
-		from(rgba(245,245,245,1.0)), 
-		to(rgba(100,100,100,1.0))
-	);
 
-	background-image: -moz-radial-gradient(
-		50% 50% 90deg,
-		rgba(245,245,245,1.0) 0%, 
-		rgba(100,100,100,1.0) 100%
-	);
-	
+	min-height: 600px;
+
+	background: #555a5f;
+	background: -moz-radial-gradient(center, ellipse cover, #555a5f 0%, #1c1e20 100%);
+	background: -webkit-gradient(radial, center center, 0px, center center, 100%, color-stop(0%,#555a5f), color-stop(100%,#1c1e20));
+	background: -webkit-radial-gradient(center, ellipse cover, #555a5f 0%,#1c1e20 100%);
+	background: -o-radial-gradient(center, ellipse cover, #555a5f 0%,#1c1e20 100%);
+	background: -ms-radial-gradient(center, ellipse cover, #555a5f 0%,#1c1e20 100%);
+	background: radial-gradient(center, ellipse cover, #555a5f 0%,#1c1e20 100%);
 }
 
 
@@ -56,16 +57,14 @@ html, body {
 h1, h2, h3, h4 {
 	margin: 0 0 20px 0;
 	
-	color: #222;
+	color: #eee;
 	
-	font-family: 'League Gothic', Arial, Helvetica, sans-serif;
+	font-family: 'League Gothic', sans-serif;
 	line-height: 0.9em;
 	letter-spacing: 0.02em;
 	
 	text-transform: uppercase;
-	
-	text-shadow: 0px 1px 0px #eee, 
-				 0px 0px 4px #bbb;
+	text-shadow: 0px 0px 6px rgba(0,0,0,0.2);
 }
 
 h1 { font-size: 136px; 	}
@@ -78,8 +77,21 @@ h2.inverted,
 h3.inverted,
 h4.inverted {
 	color: #fff;
-	text-shadow: 0px 0px 1px #fff, 
-				 0px 0px 1px #888;
+	text-shadow: 0px 0px 2px rgba(0,0,0,0.2);
+}
+
+h1 {
+	text-shadow: 0 1px 0 #ccc,
+               0 2px 0 #c9c9c9,
+               0 3px 0 #bbb,
+               0 4px 0 #b9b9b9,
+               0 5px 0 #aaa,
+               0 6px 1px rgba(0,0,0,.1),
+               0 0 5px rgba(0,0,0,.1),
+               0 1px 3px rgba(0,0,0,.3),
+               0 3px 5px rgba(0,0,0,.2),
+               0 5px 10px rgba(0,0,0,.25),
+               0 20px 20px rgba(0,0,0,.15);
 }
 
 
@@ -88,18 +100,24 @@ h4.inverted {
  *********************************************/
 #main {
 	position: absolute;
-	width: 800px;
+	width: 900px;
 	height: 600px;
 	
 	left: 50%;
 	top: 50%;
-	margin-left: -400px;
+	margin-left: -450px;
 	margin-top: -320px;
+	padding: 20px 0px;
 	
 	text-align: center;
 	
 	-webkit-perspective: 600px;
+	   -moz-perspective: 600px;
+	        perspective: 600px;
+
  	-webkit-perspective-origin: 50% 25%;
+ 	   -moz-perspective-origin: 50% 25%;
+ 	        perspective-origin: 50% 25%;
 }
 
 #main>section,
@@ -111,6 +129,8 @@ h4.inverted {
 	min-height: 600px;
 	
 	-webkit-transform-style: preserve-3d;
+	   -moz-transform-style: preserve-3d;
+	        transform-style: preserve-3d;
 	
 	-webkit-transition: all 800ms cubic-bezier(0.260, 0.860, 0.440, 0.985); 
 	   -moz-transition: all 800ms cubic-bezier(0.260, 0.860, 0.440, 0.985); 
@@ -122,52 +142,136 @@ h4.inverted {
 	display: block;
 	opacity: 0;
 	
-	-webkit-transform: 	translate3d(-100%, 0, 0) 
-						rotateY(-90deg) 
-						translate3d(-100%, 0, 0);
+	-webkit-transform: translate3d(-100%, 0, 0) rotateY(-90deg) translate3d(-100%, 0, 0);
+	   -moz-transform: translate3d(-100%, 0, 0) rotateY(-90deg) translate3d(-100%, 0, 0);
+	        transform: translate3d(-100%, 0, 0) rotateY(-90deg) translate3d(-100%, 0, 0);
 }
 
+/*********************************************
+ * DEFAULT THEME
+ *********************************************/
+
 #main section.present {
 	display: block;
-    position: relative;
+    position: absolute;
     z-index: 10;
+
+    -webkit-transform-style: flat;
+	   -moz-transform-style: flat;
+	        transform-style: flat;
 }
 
 #main section.future {
 	display: block;
 	opacity: 0;
 	
-	-webkit-transform: 	translate3d(100%, 0, 0) 
-						rotateY(90deg) 
-						translate3d(100%, 0, 0);
+	-webkit-transform: translate3d(100%, 0, 0) rotateY(90deg) translate3d(100%, 0, 0);
+	   -moz-transform: translate3d(100%, 0, 0) rotateY(90deg) translate3d(100%, 0, 0);
+	        transform: translate3d(100%, 0, 0) rotateY(90deg) translate3d(100%, 0, 0);
 }
 
 #main section>section.past {
 	display: block;
 	opacity: 0;
 	
-	-webkit-transform: 	translate3d(0, -50%, 0) 
-						rotateX(70deg) 
-						translate3d(0, -50%, 0);
+	-webkit-transform: translate3d(0, -50%, 0) rotateX(70deg) translate3d(0, -50%, 0);
+	   -moz-transform: translate3d(0, -50%, 0) rotateX(70deg) translate3d(0, -50%, 0);
+	        transform: translate3d(0, -50%, 0) rotateX(70deg) translate3d(0, -50%, 0);
 }
 #main section>section.future {
 	display: block;
 	opacity: 0;
 	
-	-webkit-transform: 	translate3d(0, 50%, 0) 
-						rotateX(-70deg) 
-						translate3d(0, 50%, 0);
+	-webkit-transform: translate3d(0, 50%, 0) rotateX(-70deg) translate3d(0, 50%, 0);
+	   -moz-transform: translate3d(0, 50%, 0) rotateX(-70deg) translate3d(0, 50%, 0);
+	        transform: translate3d(0, 50%, 0) rotateX(-70deg) translate3d(0, 50%, 0);
+}
+
+
+/*********************************************
+ * CONCAVE THEME
+ *********************************************/
+
+.concave #main>section.past {
+	-webkit-transform: translate3d(-100%, 0, 0) rotateY(90deg) translate3d(-100%, 0, 0);
+	   -moz-transform: translate3d(-100%, 0, 0) rotateY(90deg) translate3d(-100%, 0, 0);
+	        transform: translate3d(-100%, 0, 0) rotateY(90deg) translate3d(-100%, 0, 0);
+}
+
+.concave #main>section.future {
+	-webkit-transform: translate3d(100%, 0, 0) rotateY(-90deg) translate3d(100%, 0, 0);
+	   -moz-transform: translate3d(100%, 0, 0) rotateY(-90deg) translate3d(100%, 0, 0);
+	        transform: translate3d(100%, 0, 0) rotateY(-90deg) translate3d(100%, 0, 0);
+}
+
+
+/*********************************************
+ * LINEAR THEME
+ *********************************************/
+
+.linear #main>section.past {
+	-webkit-transform: translate3d(-100%, 0, 0);
+	   -moz-transform: translate3d(-100%, 0, 0);
+	        transform: translate3d(-100%, 0, 0);
+}
+
+.linear #main>section.future {
+	-webkit-transform: translate3d(100%, 0, 0);
+	   -moz-transform: translate3d(100%, 0, 0);
+	        transform: translate3d(100%, 0, 0);
+}
+
+.linear #main section>section.past {
+	-webkit-transform: translate3d(0, -100%, 0);
+	   -moz-transform: translate3d(0, -100%, 0);
+	        transform: translate3d(0, -100%, 0);
+}
+.linear #main section>section.future {
+	-webkit-transform: translate3d(0, 100%, 0);
+	   -moz-transform: translate3d(0, 100%, 0);
+	        transform: translate3d(0, 100%, 0);
 }
 
 
+/*********************************************
+ * VIEW FRAGMENTS
+ *********************************************/
+
+#main section .fragment {
+	opacity: 0;
+
+	-webkit-transition: all .2s ease;
+	   -moz-transition: all .2s ease;
+	     -o-transition: all .2s ease;
+	        transition: all .2s ease;
+}
+	#main section .fragment.visible {
+		opacity: 1;
+	}
+
+
 /*********************************************
  * DEFAULT ELEMENT STYLES
  *********************************************/
 
 #main>section {
 	line-height: 1.2em;
-	text-shadow: 0px 0px 2px #fff, 0px 0px 4px #bbb;
-	font-weight: 600;
+	font-weight: normal;
+}
+
+strong, b {
+	font-weight: bold;
+}
+
+em, i {
+	font-style: italic;
+}
+
+ol, ul {
+	display: inline-block;
+
+	text-align: left;
+	margin: 0 auto;
 }
 
 ol {
@@ -175,20 +279,79 @@ ol {
 	list-style-position: inside;
 }
 
-li, p {
+ul {
+	list-style: disc;
+}
+
+p {
 	margin-bottom: 10px;
 }
 
+blockquote {
+	display: block;
+	position: relative;
+	width: 70%;
+	margin: 5px auto;
+	padding: 5px;
+	
+	font-style: italic;
+	background: rgba(255, 255, 255, 0.05);
+	box-shadow: 0px 0px 2px rgba(0,0,0,0.2);
+}
+	blockquote:before {
+		content: '“';
+	}
+	blockquote:after {
+		content: '”';
+	}
+
+pre {
+	display: block;
+	position: relative;
+	width: 90%;
+	margin: 10px auto;
+
+	text-align: left;
+	font-size: 14px;
+	font-family: monospace;
+	line-height: 1.1em;
+
+	word-wrap: break-word;
+
+	box-shadow: 0px 0px 6px rgba(0,0,0,0.3);
+}
+
+code {
+	font-family: monospace;
+}
+
+small {
+	font-size: 60%;
+}
+
+q {	
+	font-style: italic;
+}
+	q:before {
+		content: '“';
+	}
+	q:after {
+		content: '”';
+	}
+
 a:not(.image) {
-	color: #1b6263;
+	color: hsl(185, 85%, 50%);
 	text-decoration: none;
-	border-bottom: 1px dashed rgba(0,0,0,0.3);
-	padding: 1px 3px;
+
+	-webkit-transition: all .2s ease;
+	   -moz-transition: all .2s ease;
+	     -o-transition: all .2s ease;
+	        transition: all .2s ease;
 }
 	
 	a:not(.image):hover {
-		color: #fff;
-		background: #2fa794;
+		color: hsl(185, 85%, 70%);
+		background: hsla(185, 25%, 20%, 0.4);
 		text-shadow: none;
 		border: none;
 		border-radius: 2px;
@@ -201,27 +364,141 @@ img {
 	
 	-webkit-box-shadow: 0 0 10px rgba(0, 0, 0, 0.15);
 	   -moz-box-shadow: 0 0 10px rgba(0, 0, 0, 0.15);
+	     -o-box-shadow: 0 0 10px rgba(0, 0, 0, 0.15);
 	        box-shadow: 0 0 10px rgba(0, 0, 0, 0.15);
 	
-	-webkit-transition: all .11s linear;
-	   -moz-transition: all .11s linear;
-	     -o-transition: all .11s linear;
-	        transition: all .11s linear;
+	-webkit-transition: all .2s linear;
+	   -moz-transition: all .2s linear;
+	     -o-transition: all .2s linear;
+	        transition: all .2s linear;
 }
 
 	a.image:hover img {
 		background: rgba(255,255,255,0.2);
+		border-color: #13DAEC;
 		
-		-webkit-box-shadow: 0 0 20px rgba(0, 0, 0, 0.25);
-		   -moz-box-shadow: 0 0 20px rgba(0, 0, 0, 0.25);
-		        box-shadow: 0 0 20px rgba(0, 0, 0, 0.25);
+		-webkit-box-shadow: 0 0 20px rgba(0, 0, 0, 0.55);
+		   -moz-box-shadow: 0 0 20px rgba(0, 0, 0, 0.55);
+		     -o-box-shadow: 0 0 20px rgba(0, 0, 0, 0.55);
+		        box-shadow: 0 0 20px rgba(0, 0, 0, 0.55);
 	}
 
 
+/*********************************************
+ * CONTROLS
+ *********************************************/
 
+.controls {
+	display: none;
+	position: fixed;
+	width: 100px;
+	height: 100px;
+
+	right: 0;
+	bottom: 0;
+}
+	
+	.controls a {
+		font-size: 30px;
+		position: absolute;
+		opacity: 0.1;
+		color: #fff;
+	}
+		.controls a.enabled {
+			opacity: 0.6;
+			color: hsl(185, 85%, 70%);
+
+			text-shadow: 0px 0px 2px hsla(185, 45%, 70%, 0.3);
+		}
+		.controls a.enabled:active {
+			margin-top: 1px;
+		}
+
+	.controls .left {
+		top: 30px;
+	}
+
+	.controls .right {
+		left: 60px;
+		top: 30px;
+	}
+
+	.controls .up {
+		left: 30px;
+	}
+
+	.controls .down {
+		left: 30px;
+		top: 60px;
 
+	}
+
+
+/*********************************************
+ * ROLLING LINKS
+ *********************************************/
+
+.roll {
+    display: inline-block;
+    overflow: hidden;
 
+    vertical-align: top;
 
+    -webkit-perspective: 400px;
+       -moz-perspective: 400px;
+            perspective: 400px;
 
+    -webkit-perspective-origin: 50% 50%;
+       -moz-perspective-origin: 50% 50%;
+            perspective-origin: 50% 50%;
+}
+	.roll:hover {
+		background: none;
+		text-shadow: none;
+	}
+.roll span {
+    display: block;
+    position: relative;
+    padding: 0 2px;
+
+    -webkit-transition: all 400ms ease;
+       -moz-transition: all 400ms ease;
+            transition: all 400ms ease;
+    
+    -webkit-transform-origin: 50% 0%;
+       -moz-transform-origin: 50% 0%;
+            transform-origin: 50% 0%;
+    
+    -webkit-transform-style: preserve-3d;
+       -moz-transform-style: preserve-3d;
+            transform-style: preserve-3d;
+}
+    .roll:hover span {
+        background: rgba(0,0,0,0.5);
+
+        -webkit-transform: translate3d( 0px, 0px, -45px ) rotateX( 90deg );
+           -moz-transform: translate3d( 0px, 0px, -45px ) rotateX( 90deg );
+                transform: translate3d( 0px, 0px, -45px ) rotateX( 90deg );
+    }
+.roll span:after {
+    content: attr(data-title);
+
+    display: block;
+    position: absolute;
+    left: 0;
+    top: 0;
+    padding: 0 2px;
+
+    color: #fff;
+    background: hsl(185, 60%, 35%);
+
+    -webkit-transform-origin: 50% 0%;
+       -moz-transform-origin: 50% 0%;
+            transform-origin: 50% 0%;
+
+    -webkit-transform: translate3d( 0px, 105%, 0px ) rotateX( -90deg );
+       -moz-transform: translate3d( 0px, 105%, 0px ) rotateX( -90deg );
+            transform: translate3d( 0px, 105%, 0px ) rotateX( -90deg );
+}
 
 

js/slideshow.js → js/reveal.js

@@ -21,21 +21,21 @@
  */
 
 /**
- * Handles the very minimal navigation logic involved in the 
- * slideshow. Including keyboard navigation, touch interaction 
- * and URL history behavior.
+ * Reveal.js is an easy to use HTML based slideshow enhanced by 
+ * sexy CSS 3D transforms.
  * 
  * Slides are given unique hash based URL's so that they can be 
  * opened directly. I didn't use the HTML5 History API for this 
  * as it would have required the addition of server side rewrite 
  * rules and hence require more effort for anyone to set up.
  * 
- * This component can be called from other scripts via a tiny API:
- * - Slideshow.navigateTo( indexh, indexv );
- * - Slideshow.navigateLeft();
- * - Slideshow.navigateRight();
- * - Slideshow.navigateUp();
- * - Slideshow.navigateDown();
+ * Public facing methods:
+ * - Reveal.initialize( { ... options ... } );
+ * - Reveal.navigateTo( indexh, indexv );
+ * - Reveal.navigateLeft();
+ * - Reveal.navigateRight();
+ * - Reveal.navigateUp();
+ * - Reveal.navigateDown();
  * 
  * 
  * version 0.1:
@@ -52,26 +52,84 @@
  * version 0.4:
  * - Fixed broken links on touch devices.
  * 
+ * version 1.0:
+ * - Added controls
+ * - Added initialization options
+ * - Reveal views in fragments
+ * - Revamped, darker, theme
+ * - Tweaked markup styles (a, em, strong, b, i, blockquote, q, pre, ul, ol)
+ * - Support for themes at initialization (default/linear/concave)
+ * - Code highlighting via highlight.js
+ * 
+ * TODO:
+ * - Touch/swipe interactions
  * 	
  * @author Hakim El Hattab
- * @version 0.4
+ * @version 1.0
  */
-var Slideshow = (function(){
+var Reveal = (function(){
 	
-	var indexh = 0,
-		indexv = 0;
+	var HORIZONTAL_SLIDES_SELECTOR = '#main>section',
+		VERTICAL_SLIDES_SELECTOR = 'section.present>section',
+		
+		indexh = 0,
+		indexv = 0,
+
+		config = {},
+		dom = {};
 	
 	/**
 	 * Activates the main program logic.
 	 */
-	function initialize() {
+	function initialize( options ) {
+		// Gather references to DOM elements
+		dom.controls = document.querySelector( '.controls' );
+		dom.controlsLeft = document.querySelector( '.controls .left' );
+		dom.controlsRight = document.querySelector( '.controls .right' );
+		dom.controlsUp = document.querySelector( '.controls .up' );
+		dom.controlsDown = document.querySelector( '.controls .down' );
+
+		// Add event listeners
 		document.addEventListener('keydown', onDocumentKeyDown, false);
 		document.addEventListener('touchstart', onDocumentTouchStart, false);
 		window.addEventListener('hashchange', onWindowHashChange, false);
-		
+		dom.controlsLeft.addEventListener('click', preventAndForward( navigateLeft ), false);
+		dom.controlsRight.addEventListener('click', preventAndForward( navigateRight ), false);
+		dom.controlsUp.addEventListener('click', preventAndForward( navigateUp ), false);
+		dom.controlsDown.addEventListener('click', preventAndForward( navigateDown ), false);
+
+		// Set default configuration
+		config.rollingLinks = options.rollingLinks === undefined ? true : options.rollingLinks;
+		config.controls = options.controls === undefined ? false : options.controls;
+		config.theme = options.theme === undefined ? 'default' : options.theme;
+
+		if( config.controls ) {
+			dom.controls.style.display = 'block';
+		}
+
+		if( config.theme !== 'default' ) {
+			document.body.classList.add( config.theme );
+		}
+
+		if( config.rollingLinks ) {
+			// Add some 3D magic to our anchors
+			linkify();
+		}
+
 		// Read the initial state of the URL (hash)
 		readURL();
 	}
+
+	/**
+	 * Prevents an events defaults behavior calls the 
+	 * specified delegate.
+	 */
+	function preventAndForward( delegate ) {
+		return function( event ) {
+			event.preventDefault();
+			delegate.call();
+		}
+	}
 	
 	/**
 	 * Handler for the document level 'keydown' event.
@@ -153,6 +211,28 @@ var Slideshow = (function(){
 	function onWindowHashChange( event ) {
 		readURL();
 	}
+
+	/**
+	 * Wrap all links in 3D goodness.
+	 */
+	function linkify() {
+		var supports3DTransforms =  document.body.style['webkitPerspective'] !== undefined || 
+                            		document.body.style['MozPerspective'] !== undefined ||
+                            		document.body.style['perspective'] !== undefined;
+
+        if( supports3DTransforms ) {
+        	var nodes = document.querySelectorAll( 'section a:not(.image)' );
+
+	        for( var i = 0, len = nodes.length; i < len; i++ ) {
+	            var node = nodes[i];
+
+	            if( !node.className || !node.className.match( /roll/g ) ) {
+	                node.className += ' roll';
+	                node.innerHTML = '<span data-title="'+ node.text +'">' + node.innerHTML + '</span>';
+	            }
+	        };
+        }
+	}
 	
 	/**
 	 * Updates one dimension of slides by showing the slide
@@ -204,11 +284,45 @@ var Slideshow = (function(){
 	 * set indices. 
 	 */
 	function slide() {
-		indexh = updateSlides( '#main>section', indexh );
-		indexv = updateSlides( 'section.present>section', indexv );
+		indexh = updateSlides( HORIZONTAL_SLIDES_SELECTOR, indexh );
+		indexv = updateSlides( VERTICAL_SLIDES_SELECTOR, indexv );
+
+		updateControls();
 		
 		writeURL();
 	}
+
+	/**
+	 * Updates the state and link pointers of the controls.
+	 */
+	function updateControls() {
+		var routes = availableRoutes();
+
+		// Remove the 'enabled' class from all directions
+		[ dom.controlsLeft, dom.controlsRight, dom.controlsUp, dom.controlsDown ].forEach( function( node ) {
+			node.classList.remove( 'enabled' );
+		} )
+
+		if( routes.left ) dom.controlsLeft.classList.add( 'enabled' );
+		if( routes.right ) dom.controlsRight.classList.add( 'enabled' );
+		if( routes.up ) dom.controlsUp.classList.add( 'enabled' );
+		if( routes.down ) dom.controlsDown.classList.add( 'enabled' );
+	}
+
+	/**
+	 * 
+	 */
+	function availableRoutes() {
+		var horizontalSlides = document.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR );
+		var verticalSlides = document.querySelectorAll( VERTICAL_SLIDES_SELECTOR );
+
+		return {
+			left: indexh > 0,
+			right: indexh < horizontalSlides.length - 1,
+			up: indexv > 0,
+			down: indexv < verticalSlides.length - 1
+		};
+	}
 	
 	/**
 	 * Reads the current URL (hash) and navigates accordingly.
@@ -233,11 +347,47 @@ var Slideshow = (function(){
 		
 		// Only include the minimum possible number of components in
 		// the URL
-		if( indexh > 0 || indexv > 0 ) url += indexh
-		if( indexv > 0 ) url += '/' + indexv
+		if( indexh > 0 || indexv > 0 ) url += indexh;
+		if( indexv > 0 ) url += '/' + indexv;
 		
 		window.location.hash = url;
 	}
+
+	/**
+	 * Navigate to the nexy slide fragment.
+	 * 
+	 * @return {Boolean} true if there was a next fragment,
+	 * false otherwise
+	 */
+	function nextFragment() {
+		var fragments = document.querySelectorAll( '.present .fragment:not(.visible)' );
+
+		if( fragments.length ) {
+			fragments[0].classList.add( 'visible' );
+
+			return true;
+		}
+
+		return false;
+	}
+
+	/**
+	 * Navigate to the previous slide fragment.
+	 * 
+	 * @return {Boolean} true if there was a previous fragment,
+	 * false otherwise
+	 */
+	function previousFragment() {
+		var fragments = document.querySelectorAll( '.present .fragment.visible' );
+
+		if( fragments.length ) {
+			fragments[ fragments.length - 1 ].classList.remove( 'visible' );
+
+			return true;
+		}
+
+		return false;
+	}
 	
 	/**
 	 * Triggers a navigation to the specified indices.
@@ -253,31 +403,39 @@ var Slideshow = (function(){
 	}
 	
 	function navigateLeft() {
-		indexh --;
-		indexv = 0;
-		slide();
+		// Prioritize hiding fragments
+		if( previousFragment() === false ) {
+			indexh --;
+			indexv = 0;
+			slide();
+		}
 	}
 	function navigateRight() {
-		indexh ++;
-		indexv = 0;
-		slide();
+		// Prioritize revealing fragments
+		if( nextFragment() === false ) {
+			indexh ++;
+			indexv = 0;
+			slide();
+		}
 	}
 	function navigateUp() {
-		indexv --;
-		slide();
+		// Prioritize hiding fragments
+		if( previousFragment() === false ) {
+			indexv --;
+			slide();
+		}
 	}
 	function navigateDown() {
-		indexv ++;
-		slide();
+		// Prioritize revealing fragments
+		if( nextFragment() === false ) {
+			indexv ++;
+			slide();
+		}
 	}
 	
-	// Initialize the program. Done right before returning to ensure
-	// that any inline variable definitions are available to all
-	// functions 
-	initialize();
-	
 	// Expose some methods publicly
 	return {
+		initialize: initialize,
 		navigateTo: navigateTo,
 		navigateLeft: navigateLeft,
 		navigateRight: navigateRight,

lib/zenburn.css

@@ -0,0 +1,115 @@
+/*
+
+Zenburn style from voldmar.ru (c) Vladimir Epifanov <voldmar@voldmar.ru>
+based on dark.css by Ivan Sagalaev
+
+*/
+
+pre code {
+  display: block; padding: 0.5em;
+  background: #3F3F3F;
+  color: #DCDCDC;
+}
+
+pre .keyword,
+pre .tag,
+pre .django .tag,
+pre .django .keyword,
+pre .css .class,
+pre .css .id,
+pre .lisp .title {
+  color: #E3CEAB;
+}
+
+pre .django .template_tag,
+pre .django .variable,
+pre .django .filter .argument {
+  color: #DCDCDC;
+}
+
+pre .number,
+pre .date {
+  color: #8CD0D3;
+}
+
+pre .dos .envvar,
+pre .dos .stream,
+pre .variable,
+pre .apache .sqbracket {
+  color: #EFDCBC;
+}
+
+pre .dos .flow,
+pre .diff .change,
+pre .python .exception,
+pre .python .built_in,
+pre .literal,
+pre .tex .special {
+  color: #EFEFAF;
+}
+
+pre .diff .chunk,
+pre .ruby .subst {
+  color: #8F8F8F;
+}
+
+pre .dos .keyword,
+pre .python .decorator,
+pre .class .title,
+pre .haskell .label,
+pre .function .title,
+pre .ini .title,
+pre .diff .header,
+pre .ruby .class .parent,
+pre .apache .tag,
+pre .nginx .built_in,
+pre .tex .command,
+pre .input_number {
+    color: #efef8f;
+}
+
+pre .dos .winutils,
+pre .ruby .symbol,
+pre .ruby .symbol .string,
+pre .ruby .symbol .keyword,
+pre .ruby .symbol .keymethods,
+pre .ruby .string,
+pre .ruby .instancevar {
+  color: #DCA3A3;
+}
+
+pre .diff .deletion,
+pre .string,
+pre .tag .value,
+pre .preprocessor,
+pre .built_in,
+pre .sql .aggregate,
+pre .javadoc,
+pre .smalltalk .class,
+pre .smalltalk .localvars,
+pre .smalltalk .array,
+pre .css .rules .value,
+pre .attr_selector,
+pre .pseudo,
+pre .apache .cbracket,
+pre .tex .formula {
+  color: #CC9393;
+}
+
+pre .shebang,
+pre .diff .addition,
+pre .comment,
+pre .java .annotation,
+pre .template_comment,
+pre .pi,
+pre .doctype {
+  color: #7F9F7F;
+}
+
+pre .xml .css,
+pre .xml .javascript,
+pre .xml .vbscript,
+pre .tex .formula {
+  opacity: 0.5;
+}
+