new shorter api method names (closes #178), restructured and cleaned up core js

2 files changed, 444 insertions, 411 deletions

diff --git a/js/reveal.js b/js/reveal.js
index 3372029..c1ffb8f 100644
--- a/js/reveal.js
+++ b/js/reveal.js
@@ -1,5 +1,5 @@
 /*!
- * reveal.js 2.1 r32
+ * reveal.js 2.1 r33
  * http://lab.hakim.se/reveal-js
  * MIT licensed
  * 
@@ -285,18 +285,6 @@ var Reveal = (function(){
 			dom.progress.style.display = 'block';
 		}
 
-		// Load the theme in the config, if it's not already loaded
-		if( config.theme && dom.theme ) {
-			var themeURL = dom.theme.getAttribute( 'href' );
-			var themeFinder = /[^\/]*?(?=\.css)/;
-			var themeName = themeURL.match(themeFinder)[0];
-
-			if(  config.theme !== themeName ) {
-				themeURL = themeURL.replace(themeFinder, config.theme);
-				dom.theme.setAttribute( 'href', themeURL );
-			}
-		}
-
 		if( config.transition !== 'default' ) {
 			dom.wrapper.classList.add( config.transition );
 		}
@@ -306,12 +294,27 @@ var Reveal = (function(){
 			document.addEventListener( 'mousewheel', onDocumentMouseScroll, false );
 		}
 
+		// 3D links
 		if( config.rollingLinks ) {
-			// Add some 3D magic to our anchors
 			linkify();
 		}
+
+		// Load the theme in the config, if it's not already loaded
+		if( config.theme && dom.theme ) {
+			var themeURL = dom.theme.getAttribute( 'href' );
+			var themeFinder = /[^\/]*?(?=\.css)/;
+			var themeName = themeURL.match(themeFinder)[0];
+
+			if(  config.theme !== themeName ) {
+				themeURL = themeURL.replace(themeFinder, config.theme);
+				dom.theme.setAttribute( 'href', themeURL );
+			}
+		}
 	}
 
+	/**
+	 * Binds all event listeners.
+	 */
 	function addEventListeners() {
 		document.addEventListener( 'touchstart', onDocumentTouchStart, false );
 		document.addEventListener( 'touchmove', onDocumentTouchMove, false );
@@ -330,6 +333,9 @@ var Reveal = (function(){
 		}
 	}
 
+	/**
+	 * Unbinds all event listeners.
+	 */
 	function removeEventListeners() {
 		document.removeEventListener( 'keydown', onDocumentKeyDown, false );
 		document.removeEventListener( 'touchstart', onDocumentTouchStart, false );
@@ -403,210 +409,6 @@ var Reveal = (function(){
 		extend( event, properties );
 		dom.wrapper.dispatchEvent( event );
 	}
-	
-	/**
-	 * Handler for the document level 'keydown' event.
-	 * 
-	 * @param {Object} event
-	 */
-	function onDocumentKeyDown( event ) {
-		// Disregard the event if the target is editable or a 
-		// modifier is present
-		if ( document.querySelector( ':focus' ) !== null || event.shiftKey || event.altKey || event.ctrlKey || event.metaKey ) return;
-
-		var triggered = true;
-
-		switch( event.keyCode ) {
-			// p, page up
-			case 80: case 33: navigatePrev(); break; 
-			// n, page down
-			case 78: case 34: navigateNext(); break;
-			// h, left
-			case 72: case 37: navigateLeft(); break;
-			// l, right
-			case 76: case 39: navigateRight(); break;
-			// k, up
-			case 75: case 38: navigateUp(); break;
-			// j, down
-			case 74: case 40: navigateDown(); break;
-			// home
-			case 36: navigateTo( 0 ); break;
-			// end
-			case 35: navigateTo( Number.MAX_VALUE ); break;
-			// space
-			case 32: isOverviewActive() ? deactivateOverview() : navigateNext(); break;
-			// return
-			case 13: isOverviewActive() ? deactivateOverview() : triggered = false; break;
-			// b, period
-			case 66: case 190: togglePause(); break;
-			// f
-			case 70: enterFullscreen(); break;
-			default:
-				triggered = false;
-		}
-
-		// If the input resulted in a triggered action we should prevent 
-		// the browsers default behavior
-		if( triggered ) {
-			event.preventDefault();
-		}
-		else if ( event.keyCode === 27 && supports3DTransforms ) {
-			toggleOverview();
-	
-			event.preventDefault();
-		}
-
-		// If auto-sliding is enabled we need to cue up 
-		// another timeout
-		cueAutoSlide();
-
-	}
-
-	/**
-	 * Handler for the document level 'touchstart' event,
-	 * enables support for swipe and pinch gestures.
-	 */
-	function onDocumentTouchStart( event ) {
-		touch.startX = event.touches[0].clientX;
-		touch.startY = event.touches[0].clientY;
-		touch.startCount = event.touches.length;
-
-		// If there's two touches we need to memorize the distance 
-		// between those two points to detect pinching
-		if( event.touches.length === 2 && config.overview ) {
-			touch.startSpan = distanceBetween( {
-				x: event.touches[1].clientX,
-				y: event.touches[1].clientY
-			}, {
-				x: touch.startX,
-				y: touch.startY
-			} );
-		}
-	}
-	
-	/**
-	 * Handler for the document level 'touchmove' event.
-	 */
-	function onDocumentTouchMove( event ) {
-		// Each touch should only trigger one action
-		if( !touch.handled ) {
-			var currentX = event.touches[0].clientX;
-			var currentY = event.touches[0].clientY;
-
-			// If the touch started off with two points and still has 
-			// two active touches; test for the pinch gesture
-			if( event.touches.length === 2 && touch.startCount === 2 && config.overview ) {
-
-				// The current distance in pixels between the two touch points
-				var currentSpan = distanceBetween( {
-					x: event.touches[1].clientX,
-					y: event.touches[1].clientY
-				}, {
-					x: touch.startX,
-					y: touch.startY
-				} );
-
-				// If the span is larger than the desire amount we've got 
-				// ourselves a pinch
-				if( Math.abs( touch.startSpan - currentSpan ) > touch.threshold ) {
-					touch.handled = true;
-
-					if( currentSpan < touch.startSpan ) {
-						activateOverview();
-					}
-					else {
-						deactivateOverview();
-					}
-				}
-
-				event.preventDefault();
-
-			}
-			// There was only one touch point, look for a swipe
-			else if( event.touches.length === 1 && touch.startCount !== 2 ) {
-
-				var deltaX = currentX - touch.startX,
-					deltaY = currentY - touch.startY;
-
-				if( deltaX > touch.threshold && Math.abs( deltaX ) > Math.abs( deltaY ) ) {
-					touch.handled = true;
-					navigateLeft();
-				} 
-				else if( deltaX < -touch.threshold && Math.abs( deltaX ) > Math.abs( deltaY ) ) {
-					touch.handled = true;
-					navigateRight();
-				} 
-				else if( deltaY > touch.threshold ) {
-					touch.handled = true;
-					navigateUp();
-				} 
-				else if( deltaY < -touch.threshold ) {
-					touch.handled = true;
-					navigateDown();
-				}
-
-				event.preventDefault();
-
-			}
-		}
-		// There's a bug with swiping on some Android devices unless 
-		// the default action is always prevented
-		else if( navigator.userAgent.match( /android/gi ) ) {
-			event.preventDefault();
-		}
-	}
-
-	/**
-	 * Handler for the document level 'touchend' event.
-	 */
-	function onDocumentTouchEnd( event ) {
-		touch.handled = false;
-	}
-
-	/**
-	 * Handles mouse wheel scrolling, throttled to avoid 
-	 * skipping multiple slides.
-	 */
-	function onDocumentMouseScroll( event ){
-		clearTimeout( mouseWheelTimeout );
-
-		mouseWheelTimeout = setTimeout( function() {
-			var delta = event.detail || -event.wheelDelta;
-			if( delta > 0 ) {
-				navigateNext();
-			}
-			else {
-				navigatePrev();
-			}
-		}, 100 );
-	}
-	
-	/**
-	 * Handler for the window level 'hashchange' event.
-	 * 
-	 * @param {Object} event
-	 */
-	function onWindowHashChange( event ) {
-		readURL();
-	}
-
-	/**
-	 * Invoked when a slide is and we're in the overview.
-	 */
-	function onOverviewSlideClicked( event ) {
-		// TODO There's a bug here where the event listeners are not 
-		// removed after deactivating the overview.
-		if( isOverviewActive() ) {
-			event.preventDefault();
-
-			deactivateOverview();
-
-			indexh = this.getAttribute( 'data-index-h' );
-			indexv = this.getAttribute( 'data-index-v' );
-
-			slide();
-		}
-	}
 
 	/**
 	 * Wrap all links in 3D goodness.
@@ -795,101 +597,6 @@ var Reveal = (function(){
 	function isPaused() {
 		return dom.wrapper.classList.contains( 'paused' );
 	}
-
-	/**
-	 * Updates one dimension of slides by showing the slide
-	 * with the specified index.
-	 * 
-	 * @param {String} selector A CSS selector that will fetch
-	 * the group of slides we are working with
-	 * @param {Number} index The index of the slide that should be
-	 * shown
-	 * 
-	 * @return {Number} The index of the slide that is now shown,
-	 * might differ from the passed in index if it was out of 
-	 * bounds.
-	 */
-	function updateSlides( selector, index ) {
-		// Select all slides and convert the NodeList result to
-		// an array
-		var slides = Array.prototype.slice.call( document.querySelectorAll( selector ) ),
-			slidesLength = slides.length;
-		
-		if( slidesLength ) {
-
-			// Should the index loop?
-			if( config.loop ) {
-				index %= slidesLength;
-
-				if( index < 0 ) {
-					index = slidesLength + index;
-				}
-			}
-			
-			// Enforce max and minimum index bounds
-			index = Math.max( Math.min( index, slidesLength - 1 ), 0 );
-			
-			for( var i = 0; i < slidesLength; i++ ) {
-				var slide = slides[i];
-
-				// Optimization; hide all slides that are three or more steps 
-				// away from the present slide
-				if( isOverviewActive() === false ) {
-					// The distance loops so that it measures 1 between the first
-					// and last slides
-					var distance = Math.abs( ( index - i ) % ( slidesLength - 3 ) ) || 0;
-
-					slide.style.display = distance > 3 ? 'none' : 'block';
-				}
-
-				slides[i].classList.remove( 'past' );
-				slides[i].classList.remove( 'present' );
-				slides[i].classList.remove( 'future' );
-
-				if( i < index ) {
-					// Any element previous to index is given the 'past' class
-					slides[i].classList.add( 'past' );
-				}
-				else if( i > index ) {
-					// Any element subsequent to index is given the 'future' class
-					slides[i].classList.add( 'future' );
-				}
-
-				// If this element contains vertical slides
-				if( slide.querySelector( 'section' ) ) {
-					slides[i].classList.add( 'stack' );
-				}
-			}
-
-			// Mark the current slide as present
-			slides[index].classList.add( 'present' );
-
-			// If this slide has a state associated with it, add it
-			// onto the current state of the deck
-			var slideState = slides[index].getAttribute( 'data-state' );
-			if( slideState ) {
-				state = state.concat( slideState.split( ' ' ) );
-			}
-
-			// If this slide has a data-autoslide attribtue associated use this as 
-			// autoSlide value otherwise use the global configured time
-			var slideAutoSlide = slides[index].getAttribute( 'data-autoslide' );
-			if( slideAutoSlide ) {
-				autoSlide = parseInt( slideAutoSlide );
-			} else {
-				autoSlide = config.autoSlide
-			}
-
-		}
-		else {
-			// Since there are no slides we can't be anywhere beyond the 
-			// zeroth index
-			index = 0;
-		}
-		
-		return index;
-		
-	}
 	
 	/**
 	 * Steps from the current point in the presentation to the 
@@ -987,25 +694,120 @@ var Reveal = (function(){
 	}
 
 	/**
+	 * Updates one dimension of slides by showing the slide
+	 * with the specified index.
+	 * 
+	 * @param {String} selector A CSS selector that will fetch
+	 * the group of slides we are working with
+	 * @param {Number} index The index of the slide that should be
+	 * shown
+	 * 
+	 * @return {Number} The index of the slide that is now shown,
+	 * might differ from the passed in index if it was out of 
+	 * bounds.
+	 */
+	function updateSlides( selector, index ) {
+		// Select all slides and convert the NodeList result to
+		// an array
+		var slides = Array.prototype.slice.call( document.querySelectorAll( selector ) ),
+			slidesLength = slides.length;
+		
+		if( slidesLength ) {
+
+			// Should the index loop?
+			if( config.loop ) {
+				index %= slidesLength;
+
+				if( index < 0 ) {
+					index = slidesLength + index;
+				}
+			}
+			
+			// Enforce max and minimum index bounds
+			index = Math.max( Math.min( index, slidesLength - 1 ), 0 );
+			
+			for( var i = 0; i < slidesLength; i++ ) {
+				var element = slides[i];
+
+				// Optimization; hide all slides that are three or more steps 
+				// away from the present slide
+				if( isOverviewActive() === false ) {
+					// The distance loops so that it measures 1 between the first
+					// and last slides
+					var distance = Math.abs( ( index - i ) % ( slidesLength - 3 ) ) || 0;
+
+					element.style.display = distance > 3 ? 'none' : 'block';
+				}
+
+				slides[i].classList.remove( 'past' );
+				slides[i].classList.remove( 'present' );
+				slides[i].classList.remove( 'future' );
+
+				if( i < index ) {
+					// Any element previous to index is given the 'past' class
+					slides[i].classList.add( 'past' );
+				}
+				else if( i > index ) {
+					// Any element subsequent to index is given the 'future' class
+					slides[i].classList.add( 'future' );
+				}
+
+				// If this element contains vertical slides
+				if( element.querySelector( 'section' ) ) {
+					slides[i].classList.add( 'stack' );
+				}
+			}
+
+			// Mark the current slide as present
+			slides[index].classList.add( 'present' );
+
+			// If this slide has a state associated with it, add it
+			// onto the current state of the deck
+			var slideState = slides[index].getAttribute( 'data-state' );
+			if( slideState ) {
+				state = state.concat( slideState.split( ' ' ) );
+			}
+
+			// If this slide has a data-autoslide attribtue associated use this as 
+			// autoSlide value otherwise use the global configured time
+			var slideAutoSlide = slides[index].getAttribute( 'data-autoslide' );
+			if( slideAutoSlide ) {
+				autoSlide = parseInt( slideAutoSlide );
+			} else {
+				autoSlide = config.autoSlide
+			}
+
+		}
+		else {
+			// Since there are no slides we can't be anywhere beyond the 
+			// zeroth index
+			index = 0;
+		}
+		
+		return index;
+		
+	}
+
+	/**
 	 * Updates the state and link pointers of the controls.
 	 */
 	function updateControls() {
-		if ( !config.controls || !dom.controls ) {
-			return;
+		if ( config.controls && dom.controls ) {
+			
+			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' );
+			} );
+
+			// Add the 'enabled' class to the available routes
+			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' );
+
 		}
-		
-		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' );
-		} );
-
-		// Add the 'enabled' class to the available routes
-		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' );
 	}
 
 	/**
@@ -1039,16 +841,16 @@ var Reveal = (function(){
 		// assume that this is a named link
 		if( isNaN( parseInt( bits[0], 10 ) ) && name.length ) {
 			// Find the slide with the specified name
-			var slide = document.querySelector( '#' + name );
+			var element = document.querySelector( '#' + name );
 
-			if( slide ) {
+			if( element ) {
 				// Find the position of the named slide and navigate to it
-				var indices = Reveal.getIndices( slide );
-				navigateTo( indices.h, indices.v );
+				var indices = Reveal.getIndices( element );
+				slide( indices.h, indices.v );
 			}
 			// If the slide doesn't exist, navigate to the current slide
 			else {
-				navigateTo( indexh, indexv );
+				slide( indexh, indexv );
 			}
 		}
 		else {
@@ -1056,7 +858,7 @@ var Reveal = (function(){
 			var h = parseInt( bits[0], 10 ) || 0,
 				v = parseInt( bits[1], 10 ) || 0;
 
-			navigateTo( h, v );
+			slide( h, v );
 		}
 	}
 	
@@ -1078,6 +880,41 @@ var Reveal = (function(){
 	}
 
 	/**
+	 * Retrieves the h/v location of the current, or specified, 
+	 * slide.
+	 * 
+	 * @param {HTMLElement} slide If specified, the returned 
+	 * index will be for this slide rather than the currently 
+	 * active one
+	 * 
+	 * @return {Object} { h: <int>, v: <int> }
+	 */
+	function getIndices( slide ) {
+		// By default, return the current indices
+		var h = indexh,
+			v = indexv;
+
+		// If a slide is specified, return the indices of that slide
+		if( slide ) {
+			var isVertical = !!slide.parentNode.nodeName.match( /section/gi );
+			var slideh = isVertical ? slide.parentNode : slide;
+
+			// Select all horizontal slides
+			var horizontalSlides = Array.prototype.slice.call( document.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR ) );
+
+			// Now that we know which the horizontal slide is, get its index
+			h = Math.max( horizontalSlides.indexOf( slideh ), 0 );
+
+			// If this is a vertical slide, grab the vertical index
+			if( isVertical ) {
+				v = Math.max( Array.prototype.slice.call( slide.parentNode.children ).indexOf( slide ), 0 );
+			}
+		}
+
+		return { h: h, v: v };
+	}
+
+	/**
 	 * Navigate to the next slide fragment.
 	 * 
 	 * @return {Boolean} true if there was a next fragment,
@@ -1155,16 +992,6 @@ var Reveal = (function(){
 		}
 	}
 	
-	/**
-	 * Triggers a navigation to the specified indices.
-	 * 
-	 * @param {Number} h The horizontal index of the slide to show
-	 * @param {Number} v The vertical index of the slide to show
-	 */
-	function navigateTo( h, v ) {
-		slide( h, v );
-	}
-	
 	function navigateLeft() {
 		// Prioritize hiding fragments
 		if( isOverviewActive() || previousFragment() === false ) {
@@ -1232,16 +1059,244 @@ var Reveal = (function(){
 		cueAutoSlide();
 	}
 
-	// Expose some methods publicly
+
+	// --------------------------------------------------------------------//
+	// ----------------------------- EVENTS -------------------------------//
+	// --------------------------------------------------------------------//
+
+
+	/**
+	 * Handler for the document level 'keydown' event.
+	 * 
+	 * @param {Object} event
+	 */
+	function onDocumentKeyDown( event ) {
+		// Disregard the event if the target is editable or a 
+		// modifier is present
+		if ( document.querySelector( ':focus' ) !== null || event.shiftKey || event.altKey || event.ctrlKey || event.metaKey ) return;
+
+		var triggered = true;
+
+		switch( event.keyCode ) {
+			// p, page up
+			case 80: case 33: navigatePrev(); break; 
+			// n, page down
+			case 78: case 34: navigateNext(); break;
+			// h, left
+			case 72: case 37: navigateLeft(); break;
+			// l, right
+			case 76: case 39: navigateRight(); break;
+			// k, up
+			case 75: case 38: navigateUp(); break;
+			// j, down
+			case 74: case 40: navigateDown(); break;
+			// home
+			case 36: slide( 0 ); break;
+			// end
+			case 35: slide( Number.MAX_VALUE ); break;
+			// space
+			case 32: isOverviewActive() ? deactivateOverview() : navigateNext(); break;
+			// return
+			case 13: isOverviewActive() ? deactivateOverview() : triggered = false; break;
+			// b, period
+			case 66: case 190: togglePause(); break;
+			// f
+			case 70: enterFullscreen(); break;
+			default:
+				triggered = false;
+		}
+
+		// If the input resulted in a triggered action we should prevent 
+		// the browsers default behavior
+		if( triggered ) {
+			event.preventDefault();
+		}
+		else if ( event.keyCode === 27 && supports3DTransforms ) {
+			toggleOverview();
+	
+			event.preventDefault();
+		}
+
+		// If auto-sliding is enabled we need to cue up 
+		// another timeout
+		cueAutoSlide();
+
+	}
+
+	/**
+	 * Handler for the document level 'touchstart' event,
+	 * enables support for swipe and pinch gestures.
+	 */
+	function onDocumentTouchStart( event ) {
+		touch.startX = event.touches[0].clientX;
+		touch.startY = event.touches[0].clientY;
+		touch.startCount = event.touches.length;
+
+		// If there's two touches we need to memorize the distance 
+		// between those two points to detect pinching
+		if( event.touches.length === 2 && config.overview ) {
+			touch.startSpan = distanceBetween( {
+				x: event.touches[1].clientX,
+				y: event.touches[1].clientY
+			}, {
+				x: touch.startX,
+				y: touch.startY
+			} );
+		}
+	}
+	
+	/**
+	 * Handler for the document level 'touchmove' event.
+	 */
+	function onDocumentTouchMove( event ) {
+		// Each touch should only trigger one action
+		if( !touch.handled ) {
+			var currentX = event.touches[0].clientX;
+			var currentY = event.touches[0].clientY;
+
+			// If the touch started off with two points and still has 
+			// two active touches; test for the pinch gesture
+			if( event.touches.length === 2 && touch.startCount === 2 && config.overview ) {
+
+				// The current distance in pixels between the two touch points
+				var currentSpan = distanceBetween( {
+					x: event.touches[1].clientX,
+					y: event.touches[1].clientY
+				}, {
+					x: touch.startX,
+					y: touch.startY
+				} );
+
+				// If the span is larger than the desire amount we've got 
+				// ourselves a pinch
+				if( Math.abs( touch.startSpan - currentSpan ) > touch.threshold ) {
+					touch.handled = true;
+
+					if( currentSpan < touch.startSpan ) {
+						activateOverview();
+					}
+					else {
+						deactivateOverview();
+					}
+				}
+
+				event.preventDefault();
+
+			}
+			// There was only one touch point, look for a swipe
+			else if( event.touches.length === 1 && touch.startCount !== 2 ) {
+
+				var deltaX = currentX - touch.startX,
+					deltaY = currentY - touch.startY;
+
+				if( deltaX > touch.threshold && Math.abs( deltaX ) > Math.abs( deltaY ) ) {
+					touch.handled = true;
+					navigateLeft();
+				} 
+				else if( deltaX < -touch.threshold && Math.abs( deltaX ) > Math.abs( deltaY ) ) {
+					touch.handled = true;
+					navigateRight();
+				} 
+				else if( deltaY > touch.threshold ) {
+					touch.handled = true;
+					navigateUp();
+				} 
+				else if( deltaY < -touch.threshold ) {
+					touch.handled = true;
+					navigateDown();
+				}
+
+				event.preventDefault();
+
+			}
+		}
+		// There's a bug with swiping on some Android devices unless 
+		// the default action is always prevented
+		else if( navigator.userAgent.match( /android/gi ) ) {
+			event.preventDefault();
+		}
+	}
+
+	/**
+	 * Handler for the document level 'touchend' event.
+	 */
+	function onDocumentTouchEnd( event ) {
+		touch.handled = false;
+	}
+
+	/**
+	 * Handles mouse wheel scrolling, throttled to avoid 
+	 * skipping multiple slides.
+	 */
+	function onDocumentMouseScroll( event ){
+		clearTimeout( mouseWheelTimeout );
+
+		mouseWheelTimeout = setTimeout( function() {
+			var delta = event.detail || -event.wheelDelta;
+			if( delta > 0 ) {
+				navigateNext();
+			}
+			else {
+				navigatePrev();
+			}
+		}, 100 );
+	}
+	
+	/**
+	 * Handler for the window level 'hashchange' event.
+	 * 
+	 * @param {Object} event
+	 */
+	function onWindowHashChange( event ) {
+		readURL();
+	}
+
+	/**
+	 * Invoked when a slide is and we're in the overview.
+	 */
+	function onOverviewSlideClicked( event ) {
+		// TODO There's a bug here where the event listeners are not 
+		// removed after deactivating the overview.
+		if( isOverviewActive() ) {
+			event.preventDefault();
+
+			deactivateOverview();
+
+			indexh = this.getAttribute( 'data-index-h' );
+			indexv = this.getAttribute( 'data-index-v' );
+
+			slide();
+		}
+	}
+
+	
+	// --------------------------------------------------------------------//
+	// ------------------------------- API --------------------------------//
+	// --------------------------------------------------------------------//
+
+
 	return {
 		initialize: initialize,
-		navigateTo: navigateTo,
+		
+		// Navigation methods
+		slide: slide,
+		left: navigateLeft,
+		right: navigateRight,
+		up: navigateUp,
+		down: navigateDown,
+		prev: navigatePrev,
+		next: navigateNext,
+
+		// Deprecated aliases
+		navigateTo: slide,
 		navigateLeft: navigateLeft,
 		navigateRight: navigateRight,
 		navigateUp: navigateUp,
 		navigateDown: navigateDown,
 		navigatePrev: navigatePrev,
 		navigateNext: navigateNext,
+
+		// Toggles the overview mode on/off
 		toggleOverview: toggleOverview,
 
 		// Adds or removes all internal event listeners (such as keyboard)
@@ -1249,30 +1304,7 @@ var Reveal = (function(){
 		removeEventListeners: removeEventListeners,
 
 		// Returns the indices of the current, or specified, slide
-		getIndices: function( slide ) {
-			// By default, return the current indices
-			var h = indexh,
-				v = indexv;
-
-			// If a slide is specified, return the indices of that slide
-			if( slide ) {
-				var isVertical = !!slide.parentNode.nodeName.match( /section/gi );
-				var slideh = isVertical ? slide.parentNode : slide;
-
-				// Select all horizontal slides
-				var horizontalSlides = Array.prototype.slice.call( document.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR ) );
-
-				// Now that we know which the horizontal slide is, get its index
-				h = Math.max( horizontalSlides.indexOf( slideh ), 0 );
-
-				// If this is a vertical slide, grab the vertical index
-				if( isVertical ) {
-					v = Math.max( Array.prototype.slice.call( slide.parentNode.children ).indexOf( slide ), 0 );
-				}
-			}
-
-			return { h: h, v: v };
-		},
+		getIndices: getIndices,
 
 		// Returns the previous slide element, may be null
 		getPreviousSlide: function() {
diff --git a/js/reveal.min.js b/js/reveal.min.js
index b4f4083..8f25320 100644
--- a/js/reveal.min.js
+++ b/js/reveal.min.js
@@ -1,5 +1,5 @@
 /*!
- * reveal.js 2.1 r32
+ * reveal.js 2.1 r33
  * http://lab.hakim.se/reveal-js
  * MIT licensed
  * 
@@ -18,28 +18,18 @@ f.controlsDown=document.querySelector(".reveal .controls .down");}}function d(){
 document.body.style.height="120%";window.addEventListener("load",ad,false);window.addEventListener("orientationchange",ad,false);}}function V(){var al=[],ap=[];
 for(var am=0,ak=R.dependencies.length;am<ak;am++){var an=R.dependencies[am];if(!an.condition||an.condition()){if(an.async){ap.push(an.src);}else{al.push(an.src);
 }if(typeof an.callback==="function"){head.ready(an.src.match(/([\w\d_\-]*)\.?[^\\\/]*$/i)[0],an.callback);}}}function ao(){head.js.apply(null,ap);H();}if(al.length){head.ready(ao);
-head.js.apply(null,al);}else{ao();}}function H(){E();K();J();N();}function K(){if(T===false){R.transition="linear";}if(R.controls&&f.controls){f.controls.style.display="block";
-}if(R.progress&&f.progress){f.progress.style.display="block";}if(R.theme&&f.theme){var am=f.theme.getAttribute("href");var ak=/[^\/]*?(?=\.css)/;var al=am.match(ak)[0];
-if(R.theme!==al){am=am.replace(ak,R.theme);f.theme.setAttribute("href",am);}}if(R.transition!=="default"){f.wrapper.classList.add(R.transition);}if(R.mouseWheel){document.addEventListener("DOMMouseScroll",p,false);
-document.addEventListener("mousewheel",p,false);}if(R.rollingLinks){M();}}function E(){document.addEventListener("touchstart",A,false);document.addEventListener("touchmove",af,false);
-document.addEventListener("touchend",W,false);window.addEventListener("hashchange",w,false);if(R.keyboard){document.addEventListener("keydown",ah,false);
+head.js.apply(null,al);}else{ao();}}function H(){E();K();J();O();}function K(){if(T===false){R.transition="linear";}if(R.controls&&f.controls){f.controls.style.display="block";
+}if(R.progress&&f.progress){f.progress.style.display="block";}if(R.transition!=="default"){f.wrapper.classList.add(R.transition);}if(R.mouseWheel){document.addEventListener("DOMMouseScroll",o,false);
+document.addEventListener("mousewheel",o,false);}if(R.rollingLinks){N();}if(R.theme&&f.theme){var am=f.theme.getAttribute("href");var ak=/[^\/]*?(?=\.css)/;
+var al=am.match(ak)[0];if(R.theme!==al){am=am.replace(ak,R.theme);f.theme.setAttribute("href",am);}}}function E(){document.addEventListener("touchstart",A,false);
+document.addEventListener("touchmove",af,false);document.addEventListener("touchend",W,false);window.addEventListener("hashchange",w,false);if(R.keyboard){document.addEventListener("keydown",ah,false);
 }if(R.controls&&f.controls){f.controlsLeft.addEventListener("click",q(B),false);f.controlsRight.addEventListener("click",q(j),false);f.controlsUp.addEventListener("click",q(u),false);
 f.controlsDown.addEventListener("click",q(F),false);}}function U(){document.removeEventListener("keydown",ah,false);document.removeEventListener("touchstart",A,false);
 document.removeEventListener("touchmove",af,false);document.removeEventListener("touchend",W,false);window.removeEventListener("hashchange",w,false);if(R.controls&&f.controls){f.controlsLeft.removeEventListener("click",q(B),false);
 f.controlsRight.removeEventListener("click",q(j),false);f.controlsUp.removeEventListener("click",q(u),false);f.controlsDown.removeEventListener("click",q(F),false);
 }}function t(al,ak){for(var am in ak){al[am]=ak[am];}}function S(am,ak){var an=am.x-ak.x,al=am.y-ak.y;return Math.sqrt(an*an+al*al);}function q(ak){return function(al){al.preventDefault();
 ak.call();};}function ad(){setTimeout(function(){window.scrollTo(0,1);},0);}function r(al,ak){var am=document.createEvent("HTMLEvents",1,2);am.initEvent(al,true,true);
-t(am,ak);f.wrapper.dispatchEvent(am);}function ah(al){if(document.querySelector(":focus")!==null||al.shiftKey||al.altKey||al.ctrlKey||al.metaKey){return;
-}var ak=true;switch(al.keyCode){case 80:case 33:Z();break;case 78:case 34:x();break;case 72:case 37:B();break;case 76:case 39:j();break;case 75:case 38:u();
-break;case 74:case 40:F();break;case 36:O(0);break;case 35:O(Number.MAX_VALUE);break;case 32:L()?ae():x();break;case 13:L()?ae():ak=false;break;case 66:case 190:aa();
-break;case 70:ab();break;default:ak=false;}if(ak){al.preventDefault();}else{if(al.keyCode===27&&T){X();al.preventDefault();}}N();}function A(ak){ac.startX=ak.touches[0].clientX;
-ac.startY=ak.touches[0].clientY;ac.startCount=ak.touches.length;if(ak.touches.length===2&&R.overview){ac.startSpan=S({x:ak.touches[1].clientX,y:ak.touches[1].clientY},{x:ac.startX,y:ac.startY});
-}}function af(ap){if(!ac.handled){var an=ap.touches[0].clientX;var am=ap.touches[0].clientY;if(ap.touches.length===2&&ac.startCount===2&&R.overview){var ao=S({x:ap.touches[1].clientX,y:ap.touches[1].clientY},{x:ac.startX,y:ac.startY});
-if(Math.abs(ac.startSpan-ao)>ac.threshold){ac.handled=true;if(ao<ac.startSpan){I();}else{ae();}}ap.preventDefault();}else{if(ap.touches.length===1&&ac.startCount!==2){var al=an-ac.startX,ak=am-ac.startY;
-if(al>ac.threshold&&Math.abs(al)>Math.abs(ak)){ac.handled=true;B();}else{if(al<-ac.threshold&&Math.abs(al)>Math.abs(ak)){ac.handled=true;j();}else{if(ak>ac.threshold){ac.handled=true;
-u();}else{if(ak<-ac.threshold){ac.handled=true;F();}}}}ap.preventDefault();}}}else{if(navigator.userAgent.match(/android/gi)){ap.preventDefault();}}}function W(ak){ac.handled=false;
-}function p(ak){clearTimeout(z);z=setTimeout(function(){var al=ak.detail||-ak.wheelDelta;if(al>0){x();}else{Z();}},100);}function w(ak){J();}function C(ak){if(L()){ak.preventDefault();
-ae();m=this.getAttribute("data-index-h");e=this.getAttribute("data-index-v");a();}}function M(){if(T&&!("msPerspective" in document.body.style)){var al=document.querySelectorAll(".reveal .slides section a:not(.image)");
+t(am,ak);f.wrapper.dispatchEvent(am);}function N(){if(T&&!("msPerspective" in document.body.style)){var al=document.querySelectorAll(".reveal .slides section a:not(.image)");
 for(var am=0,ak=al.length;am<ak;am++){var an=al[am];if(an.textContent&&!an.querySelector("img")&&(!an.className||!an.classList.contains(an,"roll"))){an.classList.add("roll");
 an.innerHTML='<span data-title="'+an.text+'">'+an.innerHTML+"</span>";}}}}function I(){if(R.overview){f.wrapper.classList.add("overview");var ak=document.querySelectorAll(l);
 for(var ap=0,an=ak.length;ap<an;ap++){var am=ak[ap],au="translateZ(-2500px) translate("+((ap-m)*105)+"%, 0%)";am.setAttribute("data-index-h",ap);am.style.display="block";
@@ -50,31 +40,42 @@ ar.style.transform=aq;ar.addEventListener("click",C,true);}}}}function ae(){if(R
 for(var am=0,ak=an.length;am<ak;am++){var al=an[am];al.style.WebkitTransform="";al.style.MozTransform="";al.style.msTransform="";al.style.OTransform="";
 al.style.transform="";al.removeEventListener("click",C);}a();}}function X(ak){if(typeof ak==="boolean"){ak?I():ae();}else{L()?ae():I();}}function L(){return f.wrapper.classList.contains("overview");
 }function ab(){var ak=document.body;var al=ak.requestFullScreen||ak.webkitRequestFullScreen||ak.mozRequestFullScreen||ak.msRequestFullScreen;if(al){al.apply(ak);
-}}function c(){f.wrapper.classList.add("paused");}function o(){f.wrapper.classList.remove("paused");}function aa(){if(ag()){o();}else{c();}}function ag(){return f.wrapper.classList.contains("paused");
-}function ai(an,at){var al=Array.prototype.slice.call(document.querySelectorAll(an)),ar=al.length;if(ar){if(R.loop){at%=ar;if(at<0){at=ar+at;}}at=Math.max(Math.min(at,ar-1),0);
-for(var ap=0;ap<ar;ap++){var aq=al[ap];if(L()===false){var ak=Math.abs((at-ap)%(ar-3))||0;aq.style.display=ak>3?"none":"block";}al[ap].classList.remove("past");
-al[ap].classList.remove("present");al[ap].classList.remove("future");if(ap<at){al[ap].classList.add("past");}else{if(ap>at){al[ap].classList.add("future");
+}}function c(){f.wrapper.classList.add("paused");}function p(){f.wrapper.classList.remove("paused");}function aa(){if(ag()){p();}else{c();}}function ag(){return f.wrapper.classList.contains("paused");
+}function a(aq,av){y=G;var an=aj.concat();aj.length=0;var au=m,al=e;m=ai(l,aq===undefined?m:aq);e=ai(b,av===undefined?e:av);stateLoop:for(var ao=0,ar=aj.length;
+ao<ar;ao++){for(var am=0;am<an.length;am++){if(an[am]===aj[ao]){an.splice(am,1);continue stateLoop;}}document.documentElement.classList.add(aj[ao]);r(aj[ao]);
+}while(an.length){document.documentElement.classList.remove(an.pop());}if(R.progress&&f.progress){f.progressbar.style.width=(m/(document.querySelectorAll(l).length-1))*window.innerWidth+"px";
+}if(L()){I();}s();clearTimeout(D);D=setTimeout(h,1500);var ak=document.querySelectorAll(l);var at=ak[m],ap=at.querySelectorAll("section");G=ap[e]||at;if(m!==au||e!==al){r("slidechanged",{indexh:m,indexv:e,previousSlide:y,currentSlide:G});
+}else{y=null;}if(y){y.classList.remove("present");}}function ai(an,at){var al=Array.prototype.slice.call(document.querySelectorAll(an)),ar=al.length;if(ar){if(R.loop){at%=ar;
+if(at<0){at=ar+at;}}at=Math.max(Math.min(at,ar-1),0);for(var ap=0;ap<ar;ap++){var aq=al[ap];if(L()===false){var ak=Math.abs((at-ap)%(ar-3))||0;aq.style.display=ak>3?"none":"block";
+}al[ap].classList.remove("past");al[ap].classList.remove("present");al[ap].classList.remove("future");if(ap<at){al[ap].classList.add("past");}else{if(ap>at){al[ap].classList.add("future");
 }}if(aq.querySelector("section")){al[ap].classList.add("stack");}}al[at].classList.add("present");var am=al[at].getAttribute("data-state");if(am){aj=aj.concat(am.split(" "));
-}var ao=al[at].getAttribute("data-autoslide");if(ao){Y=parseInt(ao);}else{Y=R.autoSlide;}}else{at=0;}return at;}function a(aq,av){y=G;var an=aj.concat();
-aj.length=0;var au=m,al=e;m=ai(l,aq===undefined?m:aq);e=ai(b,av===undefined?e:av);stateLoop:for(var ao=0,ar=aj.length;ao<ar;ao++){for(var am=0;am<an.length;
-am++){if(an[am]===aj[ao]){an.splice(am,1);continue stateLoop;}}document.documentElement.classList.add(aj[ao]);r(aj[ao]);}while(an.length){document.documentElement.classList.remove(an.pop());
-}if(R.progress&&f.progress){f.progressbar.style.width=(m/(document.querySelectorAll(l).length-1))*window.innerWidth+"px";}if(L()){I();}s();clearTimeout(D);
-D=setTimeout(h,1500);var ak=document.querySelectorAll(l);var at=ak[m],ap=at.querySelectorAll("section");G=ap[e]||at;if(m!==au||e!==al){r("slidechanged",{indexh:m,indexv:e,previousSlide:y,currentSlide:G});
-}else{y=null;}if(y){y.classList.remove("present");}}function s(){if(!R.controls||!f.controls){return;}var ak=g();[f.controlsLeft,f.controlsRight,f.controlsUp,f.controlsDown].forEach(function(al){al.classList.remove("enabled");
-});if(ak.left){f.controlsLeft.classList.add("enabled");}if(ak.right){f.controlsRight.classList.add("enabled");}if(ak.up){f.controlsUp.classList.add("enabled");
-}if(ak.down){f.controlsDown.classList.add("enabled");}}function g(){var ak=document.querySelectorAll(l),al=document.querySelectorAll(b);return{left:m>0,right:m<ak.length-1,up:e>0,down:e<al.length-1};
-}function J(){var ap=window.location.hash;var ao=ap.slice(2).split("/"),am=ap.replace(/#|\//gi,"");if(isNaN(parseInt(ao[0],10))&&am.length){var ak=document.querySelector("#"+am);
-if(ak){var aq=Reveal.getIndices(ak);O(aq.h,aq.v);}else{O(m,e);}}else{var an=parseInt(ao[0],10)||0,al=parseInt(ao[1],10)||0;O(an,al);}}function h(){if(R.history){var ak="/";
-if(m>0||e>0){ak+=m;}if(e>0){ak+="/"+e;}window.location.hash=ak;}}function v(){if(document.querySelector(b+".present")){var al=document.querySelectorAll(b+".present .fragment:not(.visible)");
-if(al.length){al[0].classList.add("visible");r("fragmentshown",{fragment:al[0]});return true;}}else{var ak=document.querySelectorAll(l+".present .fragment:not(.visible)");
-if(ak.length){ak[0].classList.add("visible");r("fragmentshown",{fragment:ak[0]});return true;}}return false;}function Q(){if(document.querySelector(b+".present")){var al=document.querySelectorAll(b+".present .fragment.visible");
+}var ao=al[at].getAttribute("data-autoslide");if(ao){Y=parseInt(ao);}else{Y=R.autoSlide;}}else{at=0;}return at;}function s(){if(R.controls&&f.controls){var ak=g();
+[f.controlsLeft,f.controlsRight,f.controlsUp,f.controlsDown].forEach(function(al){al.classList.remove("enabled");});if(ak.left){f.controlsLeft.classList.add("enabled");
+}if(ak.right){f.controlsRight.classList.add("enabled");}if(ak.up){f.controlsUp.classList.add("enabled");}if(ak.down){f.controlsDown.classList.add("enabled");
+}}}function g(){var ak=document.querySelectorAll(l),al=document.querySelectorAll(b);return{left:m>0,right:m<ak.length-1,up:e>0,down:e<al.length-1};}function J(){var ap=window.location.hash;
+var ao=ap.slice(2).split("/"),al=ap.replace(/#|\//gi,"");if(isNaN(parseInt(ao[0],10))&&al.length){var am=document.querySelector("#"+al);if(am){var aq=Reveal.getIndices(am);
+a(aq.h,aq.v);}else{a(m,e);}}else{var an=parseInt(ao[0],10)||0,ak=parseInt(ao[1],10)||0;a(an,ak);}}function h(){if(R.history){var ak="/";if(m>0||e>0){ak+=m;
+}if(e>0){ak+="/"+e;}window.location.hash=ak;}}function M(ak){var ao=m,am=e;if(ak){var ap=!!ak.parentNode.nodeName.match(/section/gi);var an=ap?ak.parentNode:ak;
+var al=Array.prototype.slice.call(document.querySelectorAll(l));ao=Math.max(al.indexOf(an),0);if(ap){am=Math.max(Array.prototype.slice.call(ak.parentNode.children).indexOf(ak),0);
+}}return{h:ao,v:am};}function v(){if(document.querySelector(b+".present")){var al=document.querySelectorAll(b+".present .fragment:not(.visible)");if(al.length){al[0].classList.add("visible");
+r("fragmentshown",{fragment:al[0]});return true;}}else{var ak=document.querySelectorAll(l+".present .fragment:not(.visible)");if(ak.length){ak[0].classList.add("visible");
+r("fragmentshown",{fragment:ak[0]});return true;}}return false;}function Q(){if(document.querySelector(b+".present")){var al=document.querySelectorAll(b+".present .fragment.visible");
 if(al.length){al[al.length-1].classList.remove("visible");r("fragmenthidden",{fragment:al[al.length-1]});return true;}}else{var ak=document.querySelectorAll(l+".present .fragment.visible");
-if(ak.length){ak[ak.length-1].classList.remove("visible");r("fragmenthidden",{fragment:ak[ak.length-1]});return true;}}return false;}function N(){clearTimeout(k);
-if(Y){k=setTimeout(x,Y);}}function O(al,ak){a(al,ak);}function B(){if(L()||Q()===false){a(m-1,0);}}function j(){if(L()||v()===false){a(m+1,0);}}function u(){if(L()||Q()===false){a(m,e-1);
+if(ak.length){ak[ak.length-1].classList.remove("visible");r("fragmenthidden",{fragment:ak[ak.length-1]});return true;}}return false;}function O(){clearTimeout(k);
+if(Y){k=setTimeout(x,Y);}}function B(){if(L()||Q()===false){a(m-1,0);}}function j(){if(L()||v()===false){a(m+1,0);}}function u(){if(L()||Q()===false){a(m,e-1);
 }}function F(){if(L()||v()===false){a(m,e+1);}}function Z(){if(Q()===false){if(g().up){u();}else{var ak=document.querySelector(".reveal .slides>section.past:nth-child("+m+")");
-if(ak){e=(ak.querySelectorAll("section").length+1)||0;m--;a();}}}}function x(){if(v()===false){g().down?F():j();}N();}return{initialize:i,navigateTo:O,navigateLeft:B,navigateRight:j,navigateUp:u,navigateDown:F,navigatePrev:Z,navigateNext:x,toggleOverview:X,addEventListeners:E,removeEventListeners:U,getIndices:function(ak){var ao=m,am=e;
-if(ak){var ap=!!ak.parentNode.nodeName.match(/section/gi);var an=ap?ak.parentNode:ak;var al=Array.prototype.slice.call(document.querySelectorAll(l));ao=Math.max(al.indexOf(an),0);
-if(ap){am=Math.max(Array.prototype.slice.call(ak.parentNode.children).indexOf(ak),0);}}return{h:ao,v:am};},getPreviousSlide:function(){return y;},getCurrentSlide:function(){return G;
-},getQueryHash:function(){var ak={};location.search.replace(/[A-Z0-9]+?=(\w*)/gi,function(al){ak[al.split("=").shift()]=al.split("=").pop();});return ak;
-},addEventListener:function(al,am,ak){if("addEventListener" in window){(f.wrapper||document.querySelector(".reveal")).addEventListener(al,am,ak);}},removeEventListener:function(al,am,ak){if("addEventListener" in window){(f.wrapper||document.querySelector(".reveal")).removeEventListener(al,am,ak);
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