diff --git a/yesod/Scaffolding/Scaffolder.hs b/yesod/Scaffolding/Scaffolder.hs
index e45b48fb..5acaf438 100644
--- a/yesod/Scaffolding/Scaffolder.hs
+++ b/yesod/Scaffolding/Scaffolder.hs
@@ -161,6 +161,10 @@ scaffold = do
     unless isTiny $ writeFile' "config/models" $(codegen "config/models")
     writeFile' "messages/en.msg" $(codegen "messages/en.msg")
 
+    S.writeFile (dir ++ "/static/js/modernizr.js")
+        $(runIO (S.readFile "scaffold/static/js/modernizr.js.cg") >>= \bs ->
+            [|S.pack $(return $ LitE $ StringL $ S.unpack bs)|])
+
     S.writeFile (dir ++ "/config/favicon.ico")
         $(runIO (S.readFile "scaffold/config/favicon.ico.cg") >>= \bs -> do
             pack <- [|S.pack|]
diff --git a/yesod/scaffold/Foundation.hs.cg b/yesod/scaffold/Foundation.hs.cg
index 86c7a425..c8814801 100644
--- a/yesod/scaffold/Foundation.hs.cg
+++ b/yesod/scaffold/Foundation.hs.cg
@@ -30,12 +30,13 @@ import qualified Data.ByteString.Lazy as L
 import Database.Persist.~importGenericDB~
 import Settings (widgetFile)
 import Model
-import qualified Data.Text.Lazy.Encoding
 import Text.Jasmine (minifym)
 import Web.ClientSession (getKey)
 import Text.Hamlet (hamletFile)
 #if PRODUCTION
 import Network.Mail.Mime (sendmail)
+#else
+import qualified Data.Text.Lazy.Encoding
 #endif
 
 -- | The site argument for your application. This can be a good place to
@@ -113,6 +114,9 @@ instance Yesod ~sitearg~ where
     -- users receiving stale content.
     addStaticContent = addStaticContentExternal minifym base64md5 Settings.staticDir (StaticR . flip StaticRoute [])
 
+    -- Enable Javascript async loading
+    yepnopeJs _ = Just $ Right $ StaticR js_modernizr_js
+
 -- How to run database actions.
 instance YesodPersist ~sitearg~ where
     type YesodPersistBackend ~sitearg~ = ~dbMonad~
diff --git a/yesod/scaffold/Settings/StaticFiles.hs.cg b/yesod/scaffold/Settings/StaticFiles.hs.cg
index 1be2b4ba..5d9f51f3 100644
--- a/yesod/scaffold/Settings/StaticFiles.hs.cg
+++ b/yesod/scaffold/Settings/StaticFiles.hs.cg
@@ -1,7 +1,7 @@
 {-# LANGUAGE CPP, QuasiQuotes, TemplateHaskell, TypeFamilies #-}
 module Settings.StaticFiles where
 
-import Yesod.Static (staticFiles)
+import Yesod.Static (staticFiles, StaticRoute (StaticRoute))
 
 -- | This generates easy references to files in the static directory at compile time.
 --   The upside to this is that you have compile-time verification that referenced files
diff --git a/yesod/scaffold/julius/homepage.julius.cg b/yesod/scaffold/julius/homepage.julius.cg
index 9b38774d..5903b6ff 100644
--- a/yesod/scaffold/julius/homepage.julius.cg
+++ b/yesod/scaffold/julius/homepage.julius.cg
@@ -1,4 +1,2 @@
-window.onload = function(){
-    document.getElementById("#{h2id}").innerHTML = "<i>Added from JavaScript.</i>";
-}
+document.getElementById("#{h2id}").innerHTML = "<i>Added from JavaScript.</i>";
 
diff --git a/yesod/scaffold/static/js/modernizr.js.cg b/yesod/scaffold/static/js/modernizr.js.cg
new file mode 100644
index 00000000..76dc0298
--- /dev/null
+++ b/yesod/scaffold/static/js/modernizr.js.cg
@@ -0,0 +1,4 @@
+/* Modernizr 2.0.6 (Custom Build) | MIT & BSD
+ * Build: http://www.modernizr.com/download/#-fontface-backgroundsize-borderimage-borderradius-boxshadow-flexbox-hsla-multiplebgs-opacity-rgba-textshadow-cssanimations-csscolumns-generatedcontent-cssgradients-cssreflections-csstransforms-csstransforms3d-csstransitions-applicationcache-canvas-canvastext-draganddrop-hashchange-history-audio-video-indexeddb-input-inputtypes-localstorage-postmessage-sessionstorage-websockets-websqldatabase-webworkers-geolocation-inlinesvg-smil-svg-svgclippaths-touch-webgl-iepp-cssclasses-teststyles-testprop-testallprops-hasevent-prefixes-domprefixes-load
+ */
+;window.Modernizr=function(a,b,c){function H(){e.input=function(a){for(var b=0,c=a.length;b<c;b++)t[a[b]]=a[b]in l;return t}("autocomplete autofocus list placeholder max min multiple pattern required step".split(" ")),e.inputtypes=function(a){for(var d=0,e,f,h,i=a.length;d<i;d++)l.setAttribute("type",f=a[d]),e=l.type!=="text",e&&(l.value=m,l.style.cssText="position:absolute;visibility:hidden;",/^range$/.test(f)&&l.style.WebkitAppearance!==c?(g.appendChild(l),h=b.defaultView,e=h.getComputedStyle&&h.getComputedStyle(l,null).WebkitAppearance!=="textfield"&&l.offsetHeight!==0,g.removeChild(l)):/^(search|tel)$/.test(f)||(/^(url|email)$/.test(f)?e=l.checkValidity&&l.checkValidity()===!1:/^color$/.test(f)?(g.appendChild(l),g.offsetWidth,e=l.value!=m,g.removeChild(l)):e=l.value!=m)),s[a[d]]=!!e;return s}("search tel url email datetime date month week time datetime-local number range color".split(" "))}function F(a,b){var c=a.charAt(0).toUpperCase()+a.substr(1),d=(a+" "+p.join(c+" 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\ No newline at end of file
diff --git a/yesod/scaffold/tiny/Foundation.hs.cg b/yesod/scaffold/tiny/Foundation.hs.cg
index 06038352..50e5e1ec 100644
--- a/yesod/scaffold/tiny/Foundation.hs.cg
+++ b/yesod/scaffold/tiny/Foundation.hs.cg
@@ -97,3 +97,6 @@ instance Yesod ~sitearg~ where
     -- expiration dates to be set far in the future without worry of
     -- users receiving stale content.
     addStaticContent = addStaticContentExternal (const $ Left ()) base64md5 Settings.staticDir (StaticR . flip StaticRoute [])
+
+    -- Enable Javascript async loading
+    yepnopeJs _ = Just $ Right $ StaticR js_modernizr_js
diff --git a/yesod/yesod.cabal b/yesod/yesod.cabal
index ed0edb1b..6ad0e432 100644
--- a/yesod/yesod.cabal
+++ b/yesod/yesod.cabal
@@ -52,6 +52,7 @@ extra-source-files:
   scaffold/Settings.hs.cg
   scaffold/Settings/StaticFiles.hs.cg
   scaffold/messages/en.msg.cg
+  scaffold/static/js/modernizr.js.cg
 
 
 flag ghc7