Can someone advise what Jquery is being used on this page?

Can someone advise what Jquery is being used on this page?

Hi all,

On this page http://piximory.com/templates/locus/dark/bg2.html if you click the portfolio link in main nav you are presented with the various thumbnail images for the projects, if you select a category the thumbnails organise themselves using jquery, does anyone know what type of jquery style this is?

Thanks in advance!

Kyle