[Ajax] read linked post (spoiler like effect)

[kafi]

Situation: somebody wants to link certain post within his post.

I wish not to open new window (with linked post), but rather show the text from post right under the link (if link is clicked).
This should be simmilar to spoiler (hide - unhide text), but the text is not within the post but upon request is readed from linked post...

This might be also usefull for quoting system where you will be able to quote certain post without using the space in your post (only those interested will click on the quote-link and will read quoted text/post.