diff --git a/javascript.html b/javascript.html
index e79a02c747..62dbc07e6d 100644
--- a/javascript.html
+++ b/javascript.html
@@ -1413,7 +1413,7 @@ $('.nav-tabs').button()
 
     <div class="bs-example">
       <div class="panel-group" id="accordion">
-        <div class="panel">
+        <div class="panel panel-default">
           <div class="panel-heading">
             <h4 class="panel-title">
               <a class="accordion-toggle" data-toggle="collapse" data-parent="#accordion" href="#collapseOne">
@@ -1427,7 +1427,7 @@ $('.nav-tabs').button()
             </div>
           </div>
         </div>
-        <div class="panel">
+        <div class="panel panel-default">
           <div class="panel-heading">
             <h4 class="panel-title">
               <a class="accordion-toggle" data-toggle="collapse" data-parent="#accordion" href="#collapseTwo">
@@ -1441,7 +1441,7 @@ $('.nav-tabs').button()
             </div>
           </div>
         </div>
-        <div class="panel">
+        <div class="panel panel-default">
           <div class="panel-heading">
             <h4 class="panel-title">
               <a class="accordion-toggle" data-toggle="collapse" data-parent="#accordion" href="#collapseThree">
@@ -1459,7 +1459,7 @@ $('.nav-tabs').button()
     </div><!-- /example -->
 {% highlight html %}
 <div class="panel-group" id="accordion">
-  <div class="panel">
+  <div class="panel panel-default">
     <div class="panel-heading">
       <h4 class="panel-title">
         <a class="accordion-toggle" data-toggle="collapse" data-parent="#accordion" href="#collapseOne">
@@ -1473,7 +1473,7 @@ $('.nav-tabs').button()
       </div>
     </div>
   </div>
-  <div class="panel">
+  <div class="panel panel-default">
     <div class="panel-heading">
       <h4 class="panel-title">
         <a class="accordion-toggle" data-toggle="collapse" data-parent="#accordion" href="#collapseTwo">
@@ -1487,7 +1487,7 @@ $('.nav-tabs').button()
       </div>
     </div>
   </div>
-  <div class="panel">
+  <div class="panel panel-default">
     <div class="panel-heading">
       <h4 class="panel-title">
         <a class="accordion-toggle" data-toggle="collapse" data-parent="#accordion" href="#collapseThree">