From 614b8cde660fb78e45b55490d0f6d8aefb9a35d9 Mon Sep 17 00:00:00 2001
From: Hakim El Hattab <hakim.elhattab@gmail.com>
Date: Tue, 3 Jan 2012 00:11:05 -0800
Subject: [PATCH] scrolling fallback mode for IE < 9

---
 css/main.css | 24 ++++++++++++++++++++++++
 js/reveal.js | 15 ++++++++++++++-
 2 files changed, 38 insertions(+), 1 deletion(-)

diff --git a/css/main.css b/css/main.css
index 2a6b9dbe..2a590b73 100644
--- a/css/main.css
+++ b/css/main.css
@@ -872,3 +872,27 @@ html {
 }
 
 
+/*********************************************
+ * FALLBACK
+ *********************************************/
+
+.no-transforms {
+	overflow-y: auto;
+}
+
+.no-transforms .slides section {
+	-webkit-transform: none;
+	   -moz-transform: none;
+	    -ms-transform: none;
+	        transform: none;
+	
+	display: block!important;
+	opacity: 1!important;
+	position: relative!important;
+}
+
+
+
+
+
+
diff --git a/js/reveal.js b/js/reveal.js
index aa5cc7d3..767c4b97 100644
--- a/js/reveal.js
+++ b/js/reveal.js
@@ -104,13 +104,26 @@ var Reveal = (function(){
 		supports3DTransforms =  document.body.style['perspectiveProperty'] !== undefined ||
 								document.body.style['WebkitPerspective'] !== undefined || 
                         		document.body.style['MozPerspective'] !== undefined ||
-                        		document.body.style['msTransform'] !== undefined;
+                        		document.body.style['msPerspective'] !== undefined,
+        
+        supports2DTransforms =  document.body.style['transformProperty'] !== undefined ||
+								document.body.style['WebkitTransform'] !== undefined || 
+                        		document.body.style['MozTransform'] !== undefined ||
+                        		document.body.style['msTransform'] !== undefined ||
+                        		document.body.style['OTransform'] !== undefined;
 	
 	/**
 	 * Starts up the slideshow by applying configuration
 	 * options and binding various events.
 	 */
 	function initialize( options ) {
+		
+		if( !supports2DTransforms && !supports3DTransforms ) {
+			document.body.setAttribute( 'class', 'no-transforms' );
+
+			return;
+		}
+
 		// Cache references to DOM elements
 		dom.wrapper = document.querySelector( '#reveal' );
 		dom.progress = document.querySelector( '#reveal .progress' );