Freakin me out!

Hi,
I just got some official work and want to make a presentation same like this below link

www.oneover.com, although it is a super cool site, but I Don’t understand how he did that?

here is problem …

Mouser over on the right >> click grid radio btn >> click the 17th image ( tabbed as isometric)

Now pls let me know how can I do that.

I had decompile it but it is not working at all

Thanks,
learner