fix loading css on Safari 5 and other older browser

source/Ox/js/Request.js

@@ -127,6 +127,11 @@ Ox.getAsync = function(urls, get, callback) {
                     }
                     head.appendChild(element);
                 }
+                if (type == 'stylesheet') {
+                    //fixme only call if browser does not support onload
+                    // Safari 5 does not fire onload
+                    waitForCSS();
+                }
             }
         } else {
             callback(cache[url], null);
@@ -145,6 +150,18 @@ Ox.getAsync = function(urls, get, callback) {
                 callback(cache[url], null);
             }
         }
+        function waitForCSS() {
+            var error = false;
+            try {
+                element.sheet.cssRule;
+            } catch (e) {
+                error = true;
+                setTimeout(function() {
+                    waitForCSS();
+                }, 25);
+            }
+            !error && onLoad();
+        }
     }
 
     function getFiles(type, urls, callback) {