From b8f9cd8d6745c391eef5173dca959dff47db2eb1 Mon Sep 17 00:00:00 2001
From: schneefux <schneefux+commit@schneefux.xyz>
Date: Thu, 14 Apr 2016 19:05:58 +0200
Subject: enable mouse wheel scrolling

---
 index.html | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/index.html b/index.html
index a7b0463..d7cb540 100644
--- a/index.html
+++ b/index.html
@@ -108,6 +108,14 @@
             var stepped = d3.select(e.target).selectAll(".stepped")[0];
             stepped[stepped.length-1].classList.add("lastInnerstep");
         });
+
+        document.addEventListener("wheel", function(e) {
+            if (e.wheelDelta > 0) {
+                impress().prev();
+            } else {
+                impress().next();
+            }
+        });
     </script>
 
     <div class="bar" id="progressBar"><div></div></div>
-- 
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