[Plugin: Smarter Navigation] Adding text when there is no previous/next post

Hi there.

I was wondering:

The navigation works perfectly (thx btw) but when there isn’t a next/previous post, there is absolutely nothing. I want to have a text message or non functional button to replace the button in that case and I cannot find a way to make this work. Does somebody know how?

If the previous wasn’t very clear:

Post with next post available:

NEXT POST – Title – PREVIOUS POST
Blablablablabla

Post without next post available:

– Title – PREVIOUS POST
Blablablablabla

And I want something like this in that case:

//////// – Title – PREVIOUS POST

http://ww.wp.xz.cn/extend/plugins/smarter-navigation/