Merge branch 'master' into gh-pages

README.md

@@ -9,6 +9,14 @@ transitions in modern browsers and inspired by the idea behind prezi.com.
 impress.js may not help you if you have nothing interesting to say ;)
 
 
+ABOUT THE NAME
+----------------
+
+impress.js name in courtesy of @skuzniak (http://twitter.com/skuzniak/status/143627215165333504).
+
+It's an (un)fortunate coincidence that a Open/LibreOffice presentation tool is called Impress ;)
+
+
 
 DEMO
 ------
@@ -28,6 +36,10 @@ Impress.js is developed with current webkit-based browsers in mind (Chrome,
 Safari), but *should* work also in other browsers supporting CSS3 3D transforms
 and transitions (Firefox, IE10).
 
+Additionally for the animations to run smoothly it's required to have hardware
+acceleration support in your browser. This depends on the browser, your operating
+system and even kind of graphic hardware you have in your machine.
+
 It's actively developed with newest Chromium and tested in Firefox Aurora.
 
 I don't really expect it to run smoothly in non-webkit-based browser.

css/style.css

@@ -1,3 +1,12 @@
+/**
+ * This is a stylesheet for a demo presentation for impress.js
+ * 
+ * It is not meant to be a part of impress.js and is not required by impress.js.
+ * I expect that anyone creating a presentation for impress.js would create their own
+ * set of styles.
+ */
+
+
 /* http://meyerweb.com/eric/tools/css/reset/ 
    v2.0 | 20110126
    License: none (public domain)

js/impress.js

@@ -226,17 +226,19 @@
     // EVENTS
 
     document.addEventListener("keydown", function ( event ) {
-        if ( event.keyCode == 9 || event.keyCode == 32 || (event.keyCode >= 37 && event.keyCode <= 40) ) {
+        if ( event.keyCode == 9 || ( event.keyCode >= 32 && event.keyCode <= 34 ) || (event.keyCode >= 37 && event.keyCode <= 40) ) {
             var active = $(".step.active", impress);
             var next = active;
             switch( event.keyCode ) {
+                case 33: ; // pg up
                 case 37: ; // left
                 case 38:   // up
                          next = steps.indexOf( active ) - 1;
                          next = next >= 0 ? steps[ next ] : steps[ steps.length-1 ];
                          break;
                 case 9:  ; // tab
                 case 32: ; // space
+                case 34: ; // pg down
                 case 39: ; // right
                 case 40:   // down
                          next = steps.indexOf( active ) + 1;
@@ -249,6 +251,7 @@
             event.preventDefault();
         }
     }, false);
+
 
     // Sometimes it's possible to trigger focus on first link with some keyboard action.
     // Browser in such a case tries to scroll the page to make this element visible