first commit

libraries/framework/vendor/plugins/lazyline/rAF-polyfil.js

@@ -0,0 +1,25 @@
+// make sure requestAnimationFrame and cancelAnimationFrame are defined
+// polyfill for browsers without native support
+// by Opera engineer Erik Möller
+var lastTime = 0;
+var vendors = ['webkit', 'moz', 'ms', 'o'];
+for(var x = 0; x < vendors.length && !window.requestAnimationFrame; ++x) {
+    window.requestAnimationFrame = window[vendors[x]+'RequestAnimationFrame'];
+    window.cancelAnimationFrame =
+      window[vendors[x]+'CancelAnimationFrame'] || window[vendors[x]+'CancelRequestAnimationFrame'];
+}
+if (!window.requestAnimationFrame) {
+    window.requestAnimationFrame = function(callback, element) {
+        var currTime = new Date().getTime();
+        var timeToCall = Math.max(0, 16 - (currTime - lastTime));
+        var id = window.setTimeout(function() { callback(currTime + timeToCall); },
+          timeToCall);
+        lastTime = currTime + timeToCall;
+        return id;
+    }
+}
+if (!window.cancelAnimationFrame) {
+    window.cancelAnimationFrame = function(id) {
+        clearTimeout(id);
+    }
+}