diff --git a/index.html b/index.html
index ea4b9af..9fb50bd 100644
--- a/index.html
+++ b/index.html
@@ -89,16 +89,16 @@
         integrity="sha384-ka7Sk0Gln4gmtz2MlQnikT1wXgYsOg+OMhuP+IlRH9sENBO0LRn5q+8nbTov4+1p"
         crossorigin="anonymous"></script>
     <script>
-        $(document.body).on('keydown', function (event) {
+        document.body.onkeydown(function (event) {
             var KEY_B = 66;
 
             if (event.which === KEY_B) {
-                $('.relocate-location').text('书签页');
-                $('.relocating').css('opacity', 1);
+                document.getElementsByClassName("relocate-location").text('书签页');
+                document.getElementsByClassName("relocating").css('opacity', 1);
 
                 window.setTimeout(function () {
-                    $('.relocate-location').text('');
-                    $('.relocating').css('opacity', 0);
+                    document.getElementsByClassName("relocate-location").text('');
+                    document.getElementsByClassName("relocating").css('opacity', 0);
                     window.location.href = '/bookmarks.html';
                 }, 1000);
             }