Advice on Collapsing post and post dating

Does anyone know of a module or code that can mimic the collapsible feature in which www.slickdeals.net has in place? there are some on the forum that doesn't mimic this exact function. Basically the function is when you click on a post it will expand the post or contract it.

Secondly, is there a module or code that will allow you to divide up the posts by dates like slickdeals as well? So if you post everything under Nov 1, 2009, it'll fall under that date and before that will be Oct 31...so on and so forth?

Much thanks!