Actualización

web/assets/modernizr/feature-detects/img-apng.js

@@ -0,0 +1,26 @@
+// Animated PNG
+// http://en.wikipedia.org/wiki/APNG
+// By Addy Osmani
+(function () {
+
+    if (!Modernizr.canvas) return false;
+    
+    var image = new Image(),
+        canvas = document.createElement('canvas'),
+        ctx = canvas.getContext('2d');
+
+
+    image.onload = function () {
+        Modernizr.addTest('apng', function () {
+            if (typeof canvas.getContext == 'undefined') {
+                return false;
+            } else {
+                ctx.drawImage(image, 0, 0);
+                return ctx.getImageData(0, 0, 1, 1).data[3] === 0;
+            }
+        });
+    };
+
+    image.src = "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAACGFjVEwAAAABAAAAAcMq2TYAAAANSURBVAiZY2BgYPgPAAEEAQB9ssjfAAAAGmZjVEwAAAAAAAAAAQAAAAEAAAAAAAAAAAD6A+gBAbNU+2sAAAARZmRBVAAAAAEImWNgYGBgAAAABQAB6MzFdgAAAABJRU5ErkJggg==";
+
+}());