diff --git a/core/src/main/resources/lib/layout/layout.jelly b/core/src/main/resources/lib/layout/layout.jelly
index a8466f3d6ce76e309c817e416b177e42e8bad0a2..fed6a0e7a8b572eabcee8732be30b1c500834a37 100644
--- a/core/src/main/resources/lib/layout/layout.jelly
+++ b/core/src/main/resources/lib/layout/layout.jelly
@@ -142,7 +142,7 @@ ${h.initPageVariables(context)}
       <st:include it="${pd}" page="header.jelly" optional="true" />
     </j:forEach>
   </head>
-  <body id="jenkins jenkins-${h.version}" class="yui-skin-sam">
+  <body id="jenkins" class="yui-skin-sam jenkins-${h.version}" data-version="jenkins-${h.version}">
     <!-- for accessibility, skip the entire navigation bar and etc and go straight to the head of the content -->
     <a href="#skip2content" class="skiplink">Skip to content</a>
 
