Reverse positioning layout

Hello,
Congratulations for this forum.

I see this forums.digitalpoint.com/showthread.php?t=861215&highlight=reverse+positioning+css&page=2THISthread when exlpain the method to reverse vertical position of 3 layers.

I want use this method in my 3 columns layout, when in central column i want place 2 or 3 layers positioned in vertical way.

I place in central colums the 3 layer as suitable in the thread but the problem is that the central part doesn't lengthen but because of the level positioned in absolute method.

I attach an image as example in how much my English is very bad

I want this result
www insidestudio.it/project.jpg

But when insert content in 3 central layers i have this result

www insidestudio.it/result.jpg

The order in html code of the 3 div in central columns are this
div1, div2, div3 ( it is not necessary that is three layers ,only two would be enough also) in display mode the order are as my image.

I want this result without using fix height for layers
Do you have solution for my problem ??
tnk u

 

Do you have some idea to resolve my problem?