How to add different ammount of data

Hi,

On my site I would like to have a picture of three parts: the upper part, the lower part and between, where data will be found, sometimes a lot of it and sometimes not so many.

Here is my page now:

http://devetka.net/index.php

I would like to add some fun stuff for children, like this:

How to do that?

Thank you very much!

regards, Natasa