actions: register up and down arrows for switching slides

1 files changed, 2 insertions, 0 deletions

diff --git a/beamer/viewer/stage/actions.js b/beamer/viewer/stage/actions.js
index 601a441..30634ae 100644
--- a/beamer/viewer/stage/actions.js
+++ b/beamer/viewer/stage/actions.js
@@ -38,10 +38,12 @@ class KeyboardEventHandler extends ActionEventHandler {
       case "Enter":
       case " ":
       case "ArrowRight":
+      case "ArrowDown":
       case "n":
         return this.onNext();
 
       case "ArrowLeft":
+      case "ArrowUp":
       case "p":
         return this.onPrevious();
     }