diff --git a/htdocs/lib/Shortcuts.js b/htdocs/lib/Shortcuts.js
index 5915574c..3055e62b 100644
--- a/htdocs/lib/Shortcuts.js
+++ b/htdocs/lib/Shortcuts.js
@@ -58,8 +58,8 @@ Shortcuts.init = function(target) {
       </div>
 
       <div class="ks-item">
-        <div class="ks-item-txt">toggle noise reduction</div>
-        <div class="ks-item-kbd">${this.keycap('N')}</div>
+        <div class="ks-item-txt">toggle scanner</div>
+        <div class="ks-item-kbd">${this.keycap('S')}</div>
       </div>
       <div class="ks-item">
         <div class="ks-item-txt">adjust bandpass offset</div>
@@ -71,8 +71,8 @@ Shortcuts.init = function(target) {
       </div>
 
       <div class="ks-item">
-        <div class="ks-item-txt">toggle scanner</div>
-        <div class="ks-item-kbd">${this.keycap('S')}</div>
+        <div class="ks-item-txt">toggle noise reduction</div>
+        <div class="ks-item-kbd">${this.keycap('N')}</div>
       </div>
       <div class="ks-item">
         <div class="ks-item-txt">adjust waterfall min level</div>
@@ -227,6 +227,14 @@ Shortcuts.handleKey = function(event) {
             }
             break;
 
+        case 'pagedown':
+            jumpBySteps(-1);
+            break;
+
+        case 'pageup':
+            jumpBySteps(1);
+            break;
+
         case '1': case '2': case '3': case '4': case '5':
         case '6': case '7': case '8': case '9': case '0':
             // [CTRL+]0-9: Select modulation