diff --git a/index.js b/index.js
index 62770b4..e3abf97 100644
--- a/index.js
+++ b/index.js
@@ -113,11 +113,13 @@ module.exports = function (html, styles, options) {
         });
 
         // build js block to load blocking stylesheets and insert it right before
+        // exposes async stylesheets as global asyncss array which could be used with onloadCSS
         noscript.before('<script id="loadcss">\n' +
-            '(function(u,s){' +
-            loadCSS +
-            'for(var i in u){loadCSS(u[i],s);}' +
-            '}([\'' + hrefs.join('\',\'') + '\'],document.getElementById("loadcss")));\n' +
+            loadCSS + '\n' +
+            '(function(w,u,s){' +
+            'w.asyncss=[];' +
+            'for(var i in u){w.asyncss.push(w.loadCSS(u[i],s));}' +
+            '}("undefined"!=typeof global?global:this,[\'' + hrefs.join('\',\'') + '\'],document.getElementById("loadcss")));\n' +
             '</script>\n');
     }
 
diff --git a/test/expected/cartoon-absolute-expected.html b/test/expected/cartoon-absolute-expected.html
index a30e673..62564df 100644
--- a/test/expected/cartoon-absolute-expected.html
+++ b/test/expected/cartoon-absolute-expected.html
@@ -301,7 +301,8 @@ ul{
 }
 </style>
 <script id="loadcss">
-  (function(u,s){!function(e){"use strict";var n=function(n,t,o){var l,r=e.document,i=r.createElement("link");if(t)l=t;else{var a=(r.body||r.getElementsByTagName("head")[0]).childNodes;l=a[a.length-1]}var d=r.styleSheets;i.rel="stylesheet",i.href=n,i.media="only x",l.parentNode.insertBefore(i,t?l:l.nextSibling);var f=function(e){for(var n=i.href,t=d.length;t--;)if(d[t].href===n)return e();setTimeout(function(){f(e)})};return i.onloadcssdefined=f,f(function(){i.media=o||"all"}),i};"undefined"!=typeof module?module.exports=n:e.loadCSS=n}("undefined"!=typeof global?global:this);for(var i in u){loadCSS(u[i],s);}}(['/css/cartoon.18d89c7f.css','/bower_components/bootstrap/dist/css/bootstrap.d561412a.css'],document.getElementById("loadcss")));
+  !function(e){"use strict";var n=function(n,t,o){var l,r=e.document,i=r.createElement("link");if(t)l=t;else{var a=(r.body||r.getElementsByTagName("head")[0]).childNodes;l=a[a.length-1]}var d=r.styleSheets;i.rel="stylesheet",i.href=n,i.media="only x",l.parentNode.insertBefore(i,t?l:l.nextSibling);var f=function(e){for(var n=i.href,t=d.length;t--;)if(d[t].href===n)return e();setTimeout(function(){f(e)})};return i.onloadcssdefined=f,f(function(){i.media=o||"all"}),i};"undefined"!=typeof module?module.exports=n:e.loadCSS=n}("undefined"!=typeof global?global:this);
+  (function(w,u,s){w.asyncss=[];for(var i in u){w.asyncss.push(w.loadCSS(u[i],s));}}("undefined"!=typeof global?global:this,['/css/cartoon.18d89c7f.css','/bower_components/bootstrap/dist/css/bootstrap.d561412a.css'],document.getElementById("loadcss")));
 </script>
 <noscript>
 <link rel="stylesheet" href="/css/cartoon.18d89c7f.css">
diff --git a/test/expected/cartoon-expected.html b/test/expected/cartoon-expected.html
index 06851bc..6789526 100644
--- a/test/expected/cartoon-expected.html
+++ b/test/expected/cartoon-expected.html
@@ -301,7 +301,8 @@ ul{
 }
 </style>
 <script id="loadcss">
-  (function(u,s){!function(e){"use strict";var n=function(n,t,o){var l,r=e.document,i=r.createElement("link");if(t)l=t;else{var a=(r.body||r.getElementsByTagName("head")[0]).childNodes;l=a[a.length-1]}var d=r.styleSheets;i.rel="stylesheet",i.href=n,i.media="only x",l.parentNode.insertBefore(i,t?l:l.nextSibling);var f=function(e){for(var n=i.href,t=d.length;t--;)if(d[t].href===n)return e();setTimeout(function(){f(e)})};return i.onloadcssdefined=f,f(function(){i.media=o||"all"}),i};"undefined"!=typeof module?module.exports=n:e.loadCSS=n}("undefined"!=typeof global?global:this);for(var i in u){loadCSS(u[i],s);}}(['css/cartoon.18d89c7f.css','bower_components/bootstrap/dist/css/bootstrap.d561412a.css'],document.getElementById("loadcss")));
+  !function(e){"use strict";var n=function(n,t,o){var l,r=e.document,i=r.createElement("link");if(t)l=t;else{var a=(r.body||r.getElementsByTagName("head")[0]).childNodes;l=a[a.length-1]}var d=r.styleSheets;i.rel="stylesheet",i.href=n,i.media="only x",l.parentNode.insertBefore(i,t?l:l.nextSibling);var f=function(e){for(var n=i.href,t=d.length;t--;)if(d[t].href===n)return e();setTimeout(function(){f(e)})};return i.onloadcssdefined=f,f(function(){i.media=o||"all"}),i};"undefined"!=typeof module?module.exports=n:e.loadCSS=n}("undefined"!=typeof global?global:this);
+  (function(w,u,s){w.asyncss=[];for(var i in u){w.asyncss.push(w.loadCSS(u[i],s));}}("undefined"!=typeof global?global:this,['css/cartoon.18d89c7f.css','bower_components/bootstrap/dist/css/bootstrap.d561412a.css'],document.getElementById("loadcss")));
 </script>
 <noscript>
 <link rel="stylesheet" href="css/cartoon.18d89c7f.css">
diff --git a/test/expected/external-expected.html b/test/expected/external-expected.html
index 71488de..2c0d714 100644
--- a/test/expected/external-expected.html
+++ b/test/expected/external-expected.html
@@ -335,14 +335,15 @@
       float: right !important;
     }
   </style>
-  <script id="loadcss">
-    (function(u,s){!function(e){"use strict";var n=function(n,t,o){var l,r=e.document,i=r.createElement("link");if(t)l=t;else{var a=(r.body||r.getElementsByTagName("head")[0]).childNodes;l=a[a.length-1]}var d=r.styleSheets;i.rel="stylesheet",i.href=n,i.media="only x",l.parentNode.insertBefore(i,t?l:l.nextSibling);var f=function(e){for(var n=i.href,t=d.length;t--;)if(d[t].href===n)return e();setTimeout(function(){f(e)})};return i.onloadcssdefined=f,f(function(){i.media=o||"all"}),i};"undefined"!=typeof module?module.exports=n:e.loadCSS=n}("undefined"!=typeof global?global:this);for(var i in u){loadCSS(u[i],s);}}(['css/main.css', 'bower_components/bootstrap/dist/css/bootstrap.css', 'http://fonts.googleapis.com/css?family=Open+Sans'],document.getElementById("loadcss")));
-  </script>
-  <noscript>
-    <link rel="stylesheet" href="css/main.css">
-    <link rel="stylesheet" href="bower_components/bootstrap/dist/css/bootstrap.css">
-    <link href="http://fonts.googleapis.com/css?family=Open+Sans" rel="stylesheet" type="text/css">
-  </noscript>
+    <script id="loadcss">
+        !function(e){"use strict";var n=function(n,t,o){var l,r=e.document,i=r.createElement("link");if(t)l=t;else{var a=(r.body||r.getElementsByTagName("head")[0]).childNodes;l=a[a.length-1]}var d=r.styleSheets;i.rel="stylesheet",i.href=n,i.media="only x",l.parentNode.insertBefore(i,t?l:l.nextSibling);var f=function(e){for(var n=i.href,t=d.length;t--;)if(d[t].href===n)return e();setTimeout(function(){f(e)})};return i.onloadcssdefined=f,f(function(){i.media=o||"all"}),i};"undefined"!=typeof module?module.exports=n:e.loadCSS=n}("undefined"!=typeof global?global:this);
+        (function(w,u,s){w.asyncss=[];for(var i in u){w.asyncss.push(w.loadCSS(u[i],s));}}("undefined"!=typeof global?global:this,['css/main.css','bower_components/bootstrap/dist/css/bootstrap.css','http://fonts.googleapis.com/css?family=Open+Sans'],document.getElementById("loadcss")));
+    </script>
+    <noscript>
+        <link rel="stylesheet" href="css/main.css">
+        <link rel="stylesheet" href="bower_components/bootstrap/dist/css/bootstrap.css">
+        <link href="http://fonts.googleapis.com/css?family=Open+Sans" rel="stylesheet" type="text/css">
+    </noscript>
 
 
   <!-- endbuild -->
diff --git a/test/expected/external-extract-expected.html b/test/expected/external-extract-expected.html
index de9cf15..963df5a 100644
--- a/test/expected/external-extract-expected.html
+++ b/test/expected/external-extract-expected.html
@@ -301,7 +301,8 @@
     }
   </style>
   <script id="loadcss">
-    (function(u,s){!function(e){"use strict";var n=function(n,t,o){var l,r=e.document,i=r.createElement("link");if(t)l=t;else{var a=(r.body||r.getElementsByTagName("head")[0]).childNodes;l=a[a.length-1]}var d=r.styleSheets;i.rel="stylesheet",i.href=n,i.media="only x",l.parentNode.insertBefore(i,t?l:l.nextSibling);var f=function(e){for(var n=i.href,t=d.length;t--;)if(d[t].href===n)return e();setTimeout(function(){f(e)})};return i.onloadcssdefined=f,f(function(){i.media=o||"all"}),i};"undefined"!=typeof module?module.exports=n:e.loadCSS=n}("undefined"!=typeof global?global:this);for(var i in u){loadCSS(u[i],s);}}(['css/main.158f2990.css','bower_components/bootstrap/dist/css/bootstrap.d561412a.css','http://fonts.googleapis.com/css?family=Open+Sans'],document.getElementById("loadcss")));
+      !function(e){"use strict";var n=function(n,t,o){var l,r=e.document,i=r.createElement("link");if(t)l=t;else{var a=(r.body||r.getElementsByTagName("head")[0]).childNodes;l=a[a.length-1]}var d=r.styleSheets;i.rel="stylesheet",i.href=n,i.media="only x",l.parentNode.insertBefore(i,t?l:l.nextSibling);var f=function(e){for(var n=i.href,t=d.length;t--;)if(d[t].href===n)return e();setTimeout(function(){f(e)})};return i.onloadcssdefined=f,f(function(){i.media=o||"all"}),i};"undefined"!=typeof module?module.exports=n:e.loadCSS=n}("undefined"!=typeof global?global:this);
+      (function(w,u,s){w.asyncss=[];for(var i in u){w.asyncss.push(w.loadCSS(u[i],s));}}("undefined"!=typeof global?global:this,['css/main.158f2990.css','bower_components/bootstrap/dist/css/bootstrap.d561412a.css','http://fonts.googleapis.com/css?family=Open+Sans'],document.getElementById("loadcss")));
   </script>
   <noscript>
     <link rel="stylesheet" href="css/main.158f2990.css">
diff --git a/test/expected/external-ignore-expected.html b/test/expected/external-ignore-expected.html
index a6caa53..0296cbf 100644
--- a/test/expected/external-ignore-expected.html
+++ b/test/expected/external-ignore-expected.html
@@ -336,7 +336,8 @@
     }
   </style>
   <script id="loadcss">
-    (function(u,s){!function(e){"use strict";var n=function(n,t,o){var l,r=e.document,i=r.createElement("link");if(t)l=t;else{var a=(r.body||r.getElementsByTagName("head")[0]).childNodes;l=a[a.length-1]}var d=r.styleSheets;i.rel="stylesheet",i.href=n,i.media="only x",l.parentNode.insertBefore(i,t?l:l.nextSibling);var f=function(e){for(var n=i.href,t=d.length;t--;)if(d[t].href===n)return e();setTimeout(function(){f(e)})};return i.onloadcssdefined=f,f(function(){i.media=o||"all"}),i};"undefined"!=typeof module?module.exports=n:e.loadCSS=n}("undefined"!=typeof global?global:this);for(var i in u){loadCSS(u[i],s);}}(['css/main.css', 'http://fonts.googleapis.com/css?family=Open+Sans'],document.getElementById("loadcss")));
+    !function(e){"use strict";var n=function(n,t,o){var l,r=e.document,i=r.createElement("link");if(t)l=t;else{var a=(r.body||r.getElementsByTagName("head")[0]).childNodes;l=a[a.length-1]}var d=r.styleSheets;i.rel="stylesheet",i.href=n,i.media="only x",l.parentNode.insertBefore(i,t?l:l.nextSibling);var f=function(e){for(var n=i.href,t=d.length;t--;)if(d[t].href===n)return e();setTimeout(function(){f(e)})};return i.onloadcssdefined=f,f(function(){i.media=o||"all"}),i};"undefined"!=typeof module?module.exports=n:e.loadCSS=n}("undefined"!=typeof global?global:this);
+    (function(w,u,s){w.asyncss=[];for(var i in u){w.asyncss.push(w.loadCSS(u[i],s));}}("undefined"!=typeof global?global:this,['css/main.css', 'http://fonts.googleapis.com/css?family=Open+Sans'],document.getElementById("loadcss")));
   </script>
   <noscript>
     <link rel="stylesheet" href="css/main.css">
diff --git a/test/expected/index-before.html b/test/expected/index-before.html
index 3f1d933..0568b2e 100644
--- a/test/expected/index-before.html
+++ b/test/expected/index-before.html
@@ -7,7 +7,8 @@
   </style>
     <title>critical css test</title>
   <script id="loadcss">
-    (function(u,s){!function(e){"use strict";var n=function(n,t,o){var l,r=e.document,i=r.createElement("link");if(t)l=t;else{var a=(r.body||r.getElementsByTagName("head")[0]).childNodes;l=a[a.length-1]}var d=r.styleSheets;i.rel="stylesheet",i.href=n,i.media="only x",l.parentNode.insertBefore(i,t?l:l.nextSibling);var f=function(e){for(var n=i.href,t=d.length;t--;)if(d[t].href===n)return e();setTimeout(function(){f(e)})};return i.onloadcssdefined=f,f(function(){i.media=o||"all"}),i};"undefined"!=typeof module?module.exports=n:e.loadCSS=n}("undefined"!=typeof global?global:this);for(var i in u){loadCSS(u[i],s);}}(['css/main.css','bower_components/bootstrap/dist/css/bootstrap.css'],document.getElementById("loadcss")));
+      !function(e){"use strict";var n=function(n,t,o){var l,r=e.document,i=r.createElement("link");if(t)l=t;else{var a=(r.body||r.getElementsByTagName("head")[0]).childNodes;l=a[a.length-1]}var d=r.styleSheets;i.rel="stylesheet",i.href=n,i.media="only x",l.parentNode.insertBefore(i,t?l:l.nextSibling);var f=function(e){for(var n=i.href,t=d.length;t--;)if(d[t].href===n)return e();setTimeout(function(){f(e)})};return i.onloadcssdefined=f,f(function(){i.media=o||"all"}),i};"undefined"!=typeof module?module.exports=n:e.loadCSS=n}("undefined"!=typeof global?global:this);
+      (function(w,u,s){w.asyncss=[];for(var i in u){w.asyncss.push(w.loadCSS(u[i],s));}}("undefined"!=typeof global?global:this,['css/main.css','bower_components/bootstrap/dist/css/bootstrap.css'],document.getElementById("loadcss")));
   </script>
   <noscript>
     <link rel="stylesheet" href="css/main.css">
diff --git a/test/expected/index-inlined-absolute.html b/test/expected/index-inlined-absolute.html
index 4b8d168..192a681 100644
--- a/test/expected/index-inlined-absolute.html
+++ b/test/expected/index-inlined-absolute.html
@@ -301,7 +301,8 @@ ul{
 }
 </style>
 <script id="loadcss">
-  (function(u,s){!function(e){"use strict";var n=function(n,t,o){var l,r=e.document,i=r.createElement("link");if(t)l=t;else{var a=(r.body||r.getElementsByTagName("head")[0]).childNodes;l=a[a.length-1]}var d=r.styleSheets;i.rel="stylesheet",i.href=n,i.media="only x",l.parentNode.insertBefore(i,t?l:l.nextSibling);var f=function(e){for(var n=i.href,t=d.length;t--;)if(d[t].href===n)return e();setTimeout(function(){f(e)})};return i.onloadcssdefined=f,f(function(){i.media=o||"all"}),i};"undefined"!=typeof module?module.exports=n:e.loadCSS=n}("undefined"!=typeof global?global:this);for(var i in u){loadCSS(u[i],s);}}(['/css/main.css','/bower_components/bootstrap/dist/css/bootstrap.css'],document.getElementById("loadcss")));
+    !function(e){"use strict";var n=function(n,t,o){var l,r=e.document,i=r.createElement("link");if(t)l=t;else{var a=(r.body||r.getElementsByTagName("head")[0]).childNodes;l=a[a.length-1]}var d=r.styleSheets;i.rel="stylesheet",i.href=n,i.media="only x",l.parentNode.insertBefore(i,t?l:l.nextSibling);var f=function(e){for(var n=i.href,t=d.length;t--;)if(d[t].href===n)return e();setTimeout(function(){f(e)})};return i.onloadcssdefined=f,f(function(){i.media=o||"all"}),i};"undefined"!=typeof module?module.exports=n:e.loadCSS=n}("undefined"!=typeof global?global:this);
+    (function(w,u,s){w.asyncss=[];for(var i in u){w.asyncss.push(w.loadCSS(u[i],s));}}("undefined"!=typeof global?global:this,['/css/main.css','/bower_components/bootstrap/dist/css/bootstrap.css'],document.getElementById("loadcss")));
 </script>
 <noscript>
     <link rel="stylesheet" href="/css/main.css">
diff --git a/test/expected/index-inlined-async-final.html b/test/expected/index-inlined-async-final.html
index cbea358..b3da0ae 100644
--- a/test/expected/index-inlined-async-final.html
+++ b/test/expected/index-inlined-async-final.html
@@ -301,9 +301,10 @@ ul{
 }
 </style>
 <script id="loadcss">
-  (function(u,s){!function(e){"use strict";var n=function(n,t,o){var l,r=e.document,i=r.createElement("link");if(t)l=t;else{var a=(r.body||r.getElementsByTagName("head")[0]).childNodes;l=a[a.length-1]}var d=r.styleSheets;i.rel="stylesheet",i.href=n,i.media="only x",l.parentNode.insertBefore(i,t?l:l.nextSibling);var f=function(e){for(var n=i.href,t=d.length;t--;)if(d[t].href===n)return e();setTimeout(function(){f(e)})};return i.onloadcssdefined=f,f(function(){i.media=o||"all"}),i};"undefined"!=typeof module?module.exports=n:e.loadCSS=n}("undefined"!=typeof global?global:this);for(var i in u){loadCSS(u[i],s);}}(['css/main.css','bower_components/bootstrap/dist/css/bootstrap.css'],document.getElementById("loadcss")));
+    !function(e){"use strict";var n=function(n,t,o){var l,r=e.document,i=r.createElement("link");if(t)l=t;else{var a=(r.body||r.getElementsByTagName("head")[0]).childNodes;l=a[a.length-1]}var d=r.styleSheets;i.rel="stylesheet",i.href=n,i.media="only x",l.parentNode.insertBefore(i,t?l:l.nextSibling);var f=function(e){for(var n=i.href,t=d.length;t--;)if(d[t].href===n)return e();setTimeout(function(){f(e)})};return i.onloadcssdefined=f,f(function(){i.media=o||"all"}),i};"undefined"!=typeof module?module.exports=n:e.loadCSS=n}("undefined"!=typeof global?global:this);
+    (function(w,u,s){w.asyncss=[];for(var i in u){w.asyncss.push(w.loadCSS(u[i],s));}}("undefined"!=typeof global?global:this,['css/main.css','bower_components/bootstrap/dist/css/bootstrap.css'],document.getElementById("loadcss")));
 </script>
-  
+
 <noscript>
     <link rel="stylesheet" href="css/main.css">
     <link rel="stylesheet" href="bower_components/bootstrap/dist/css/bootstrap.css">
diff --git a/test/expected/index-inlined-async-minified-final.html b/test/expected/index-inlined-async-minified-final.html
index 86fc263..ee1df0d 100644
--- a/test/expected/index-inlined-async-minified-final.html
+++ b/test/expected/index-inlined-async-minified-final.html
@@ -12,7 +12,8 @@
       .header,.jumbotron{border-bottom:1px solid #e5e5e5}.btn,.jumbotron{text-align:center}body{padding-top:20px;padding-bottom:20px}.header{padding-left:15px;padding-right:15px}.header h3{margin-top:0;margin-bottom:0;line-height:40px;padding-bottom:19px}.jumbotron .btn{font-size:21px;padding:14px 24px}@media screen and (min-width:768px){.container{max-width:730px}.header{padding-left:0;padding-right:0;margin-bottom:30px}.jumbotron{border-bottom:0}}html{font-family:sans-serif;-webkit-text-size-adjust:100%;-ms-text-size-adjust:100%;font-size:62.5%;-webkit-tap-highlight-color:transparent}body{margin:0;font-family:"Helvetica Neue",Helvetica,Arial,sans-serif;font-size:14px;line-height:1.42857143;color:#333;background-color:#fff}h1{margin:.67em 0;font-size:36px}@media print{*{color:#000!important;text-shadow:none!important;background:0 0!important;box-shadow:none!important}a{text-decoration:underline}a[href]:after{content:" (" attr(href)")"}a[href^="#"]:after{content:""}h3,p{orphans:3;widows:3}h3{page-break-after:avoid}}*,:after,:before{-webkit-box-sizing:border-box;-moz-box-sizing:border-box;box-sizing:border-box}a{background:0 0;color:#428bca;text-decoration:none}h1,h3{font-family:inherit;font-weight:500;line-height:1.1;color:inherit;margin-top:20px;margin-bottom:10px}h3{font-size:24px}p{margin:0 0 10px}.lead{margin-bottom:20px;font-size:16px;font-weight:200;line-height:1.4}.text-muted{color:#999}ul{margin-top:0;margin-bottom:10px}.btn,.nav{margin-bottom:0}.container{padding-right:15px;padding-left:15px;margin-right:auto;margin-left:auto}@media (min-width:768px){.lead{font-size:21px}.container{width:750px}}@media (min-width:992px){.container{width:970px}}@media (min-width:1200px){.container{width:1170px}}.btn{display:inline-block;padding:6px 12px;font-size:14px;font-weight:400;line-height:1.42857143;white-space:nowrap;vertical-align:middle;cursor:pointer;-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none;user-select:none;background-image:none;border:1px solid transparent;border-radius:4px}.nav>li,.nav>li>a{position:relative;display:block}.btn-success{color:#fff;background-color:#5cb85c;border-color:#4cae4c}.btn-lg{padding:10px 16px;font-size:18px;line-height:1.33;border-radius:6px}.nav{padding-left:0;list-style:none}.nav>li>a{padding:10px 15px}.nav-pills>li{float:left}.nav-pills>li>a{border-radius:4px}.nav-pills>li+li{margin-left:2px}.nav-pills>li.active>a{color:#fff;background-color:#428bca}.jumbotron,.jumbotron h1{color:inherit}.jumbotron{padding:30px;margin-bottom:30px;background-color:#eee}.jumbotron p{margin-bottom:15px;font-size:21px;font-weight:200}.container .jumbotron{border-radius:6px}@media screen and (min-width:768px){.jumbotron{padding-top:48px;padding-bottom:48px}.container .jumbotron{padding-right:60px;padding-left:60px}.jumbotron h1{font-size:63px}}.container:after,.container:before,.nav:after,.nav:before{display:table;content:" "}.container:after,.nav:after{clear:both}.pull-right{float:right!important}
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   <script id="loadcss">
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diff --git a/test/expected/index-noscript-inlined-minified-final.html b/test/expected/index-noscript-inlined-minified-final.html
index 4b574e2..ea8617b 100644
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