im looking for a jquery plugin to be able to achieve this effect
http://img825.imageshack.us/img825/1213/26201311246pm.png
i found this one, but has to be buy, im looking for a Free alternative
http://codecanyon.net/item/photomosaic/full_screen_preview/232406
You can use jQuery Masonry for this. http://masonry.desandro.com/
OR
Try a CSS alternative: http://css-tricks.com/seamless-responsive-photo-grid/