I need to implement a menu navigation like [this](http://www.huawei.com/en/) for a **DotNetNuke** website (I am looking for the part of navigation that started with "I want to...")

The problem is most menu systems using dropdown popus but in my case the menu needs to shift down the content. 

I am using SuperFish and already changed some CSS to make dropdowns inserted between menubar and the rest of content but no success in animation. 
How could I animate this effect?

I am a ASP.Net developer with a bit knowledge of JavaScript/CSS. This is for DotNetNuke and the navigation menu is dynamically created.