Click to read more

Before I google around, is there a tutorial on how to expand a paragraph when a link is clicked. What I am trying to do is to limit my display on the web page. This is what I have:

Paragraph 1
this is paragraph 1, click here to see more
Paragraph 2
this is paragraph2 after a user click on it.
word word word word word word
Paragraph 3
this is paragraph 3, click here to see more

Thanks