Screen Space Ambient Occlusion

I found a couple of articles about ssao and i decided to create a render monkey project to implement the algorithm.Actually this is a mix of two shaders which can be found in the following articles
http://www.codeplex.com/XNACommunity/Wiki/View.aspx?title=Screen-Space%20Ambient%20Occlusion%2c%20c%u00f3mo%20implementarlo&referringTitle=SSAO

http://www.gamedev.net/community/forums/topic.asp?topic_id=488598

Image without ssao










Image with ssao