Upgrade to the latest matchMedia.js

update

Author: mrtuvn

lib/web/matchMedia.js

@@ -1,4 +1,4 @@
-/*! matchMedia() polyfill - Test a CSS media type/query in JS. Authors & copyright (c) 2012: Scott Jehl, Paul Irish, Nicholas Zakas, David Knight. Dual MIT/BSD license */
+/*! matchMedia() polyfill - Test a CSS media type/query in JS. Authors & copyright (c) 2012: Scott Jehl, Paul Irish, Nicholas Zakas, David Knight. MIT license */
 
 window.matchMedia || (window.matchMedia = function() {
     "use strict";
@@ -8,14 +8,18 @@ window.matchMedia || (window.matchMedia = function() {
 
     // For those that don't support matchMedium
     if (!styleMedia) {
-        var style = document.createElement('style'),
-            script = document.getElementsByTagName('script')[0],
-            info = null;
+        var style       = document.createElement('style'),
+            script      = document.getElementsByTagName('script')[0],
+            info        = null;
 
-        style.type = 'text/css';
-        style.id = 'matchmediajs-test';
+        style.type  = 'text/css';
+        style.id    = 'matchmediajs-test';
 
-        script.parentNode.insertBefore(style, script);
+        if (!script) {
+            document.head.appendChild(style);
+        } else {
+            script.parentNode.insertBefore(style, script);
+        }
 
         // 'style.currentStyle' is used by IE <= 8 and 'window.getComputedStyle' for all other browsers
         info = ('getComputedStyle' in window) && window.getComputedStyle(style, null) || style.currentStyle;
@@ -141,4 +145,4 @@ window.mediaCheck = function(options) {
     });
 
     mqChange(mq, options);
-};
+};