diff --git a/theme/index.hbs b/theme/index.hbs
index 0072f7a..b596821 100755
--- a/theme/index.hbs
+++ b/theme/index.hbs
@@ -132,9 +132,9 @@
             </script>
             {{/unless}}
 
-            <div style="height:10em;display:flex;max-width: 78%;margin: auto;margin-top:2em;">
+            <div id="navcard" style="height:10em;display:flex;max-width: 78%;margin: auto;margin-top:2em;">
                 {{#previous}}
-                <mdui-card clickable style="width:49%;height: 100%" href="javascript:void(0);" onclick="nextPage()">
+                <mdui-card clickable style="width:49%;height: 100%" href="javascript:void(0);" onclick="prevPage()">
                     <div style="display:flex;font-size:1.2em;margin-top: 10px;margin-left: 4px;">
                         <mdui-icon name="navigate_before" style="font-size:1.5em;"></mdui-icon> 上一章
                     </div>