How to Create OnClick Content?

[iDev]

Hi,

I would like to create something like this : http://www.apple.com/macosx/mountain-lion/features.html

In my site, I would like to have a vertical Nav bar on the left and with preloaded an item as default content and then loading the new content when users click on other item without refreshing the page.

Can somebody show me how to do that?

Using wordpress as my platform.

Thanks!
Eric.

[iDev]

Anybody know how to do this please?