, self.signUpWindow.bounds.width, self.signUpWindow.bounds.height)             }, completion: nil)     }      func keyboardWillHide(notification: NSNotification)     {         var info:NSDictionary = notification.userInfo!          let keyboardFrame = info[UIKeyboardFrameEndUserInfoKey] as! NSValue         let keyboardSize = keyboardFrame.CGRectValue().size          var keyboardHeight:CGFloat = keyboardSize.height          let animationDurationValue = info[UIKeyboardAnimationDurationUserInfoKey] as! NSNumber          var animationDuration : NSTimeInterval = animationDurationValue.doubleValue          self.keyboardDelegate?.keyboardWill