static/rot/rot.js

@@ -378,8 +378,16 @@
             localStorage.audiomuted = audio.muted = musicmute.checked;
             playMusic();
         })
-        volumeStepDwn.addEventListener('click', () => volumeAdd(-0.05))
-        volumeStepUp.addEventListener('click', () => volumeAdd(0.05))
+        volumeStepDwn.addEventListener('click', () => {
+            var e = audio.volume - 0.05;
+            if (e < 0) e = 0;
+            volumeSet(e);
+        })
+        volumeStepUp.addEventListener('click', () => {
+            var e = audio.volume + 0.05;
+            if (e > 1) e = 1;
+            volumeSet(e);
+        })
         
         updateVolumeLabel();
     }