Subtle 'Show More..' button in posts

Hi

Is there a content revealer plugin (not Artiss) that simply reveals the rest of a post seamlessly after some text is clicked (e.g. Read more..)? Not like a header (that Artiss offers) that you click on.

When clicked, I want the words ‘Read more’ to disappear while the rest of the sentence/paragraph/post is seamlessly revealed. No fancy boxes or new/separate lines, just simple revealing.

(I don’t want the link to open the full post in a new page by the way)

Thanks a lot, jabba.