We'll create fresh WordPress site with Slide Div installed. You have 20 minutes to test the plugin after that site we'll be deleted.
The best way for show and hide the content div (div.entry-content) with slide (toggle) effect of jQuery.
For each post:
Click on the h1 title (h1.entry-title) it becomes “.active” class and unroll the content div.
Click one seconde time and the h1 title becomes normal class and the content div roll to hidden status.
(Basicly developped for WP 3.3 with the “Twenty Eleven” 1.2 template)