Facebook's OAuth redirect URI always appends a hash: #_=_ (Stack: http://stackoverflow.com/questions/7485111/weird-url-appended) so I'm going to add another || condition here to make the line:

```
if ((show_plugin && (!window.location.hash || window.location.hash == '' || window.location.hash == '#_=_" )
```

I don't love adding service-specific logic to the generic template, but I don't think it's worth doing the work of letting specific settings pages assign dynamic conditionals, either. Lemme know if that sounds off to you.