Before you start trying to create a website like that, you might want to check out what that website looks like on a variety of different viewing platforms. Among other things:
Try looking at it on something with a screen or window
width less than about 1212 pixels (or, worse, less than 740).
For that matter, just try resizing the browser window and
watch it completely fail to scale at all. (You do know that
different people have different screen sizes and such, yes?)
Try looking at it on something that does not have the Flash
plugin installed (or does not have Flash available*; those
devices account for about 10% of the traffic to our site,
as of last month) or with security add-ons like NoScript.
If you look at the site under various conditions like that and still think you want to do something like it, nothing I can say will change your mind, so...
With all that said, the actual webpage is pretty trivial, but I suspect the part you are enamored with is probably the plugin content, which appears to have been created using Macromedia Flash (if it's old, or if the person who did it has not upgraded), or Adobe Flash (if more recent).