multiple categories section on a page

I will like to be able to add multiple sections of categories link on a page. Please check the image below:

http://scriptsbytes.com/add.png

The above image is what i want instead of having them separate

http://scriptsbytes.com/category/tutorials/html-tutorials/html-basic/
http://scriptsbytes.com/category/tutorials/html-tutorials/html-advanced/

Just like you see in http://w3schools.com/css/default.asp

What plugin do i use?