Adding Function.prototype.bind for browsers that do not support it.

browserid/static/dialog/dialog.js

@@ -49,6 +49,7 @@ steal.plugins(
                'crypto-api',
                'channel',
                'storage',
+               'browserid-extensions',
                'browserid-network',
                'browserid-errors',
                'browserid-wait')					// 3rd party script's (like jQueryUI), in resources folder

browserid/static/dialog/resources/browserid-extensions.js

+if (!Function.prototype.bind) {
+
+  Function.prototype.bind = function (oThis) {
+
+    if (typeof this !== "function") // closest thing possible to the ECMAScript 5 internal IsCallable function
+      throw new TypeError("Function.prototype.bind - what is trying to be fBound is not callable");
+
+    var aArgs = Array.prototype.slice.call(arguments, 1), 
+    fToBind = this, 
+    fNOP = function () {},
+    fBound = function () {
+      return fToBind.apply(this instanceof fNOP ? this : oThis || window, aArgs.concat(Array.prototype.slice.call(arguments)));    
+    };
+
+    fNOP.prototype = this.prototype;
+    fBound.prototype = new fNOP();
+
+    return fBound;
+
+  };
+
+}
+