[jQuery] Callback not firing

[jQuery] Callback not firing


Hello Guys,
I'm sure that I'm doing something blatantly wrong here but I can't
spot what's wrong. I've got the following code snippet.
http://pastebin.com/m71102c16
Now, when calling the method change_testimonial() I get the log entry
in the console as expected however the callback to show_new_testimonial
() after the fade out occurs doesn't appear to get fired.
Can anyone offer any suggestions? I know that the show_new_testimonial
() method works when called independently so I'm guessing this is just
a syntax issue on my part for the callback.
Thanks,
Rob