Develop a portal user interface with the ability to expand collapse portal style containers

I want to develop a portal style layout which will allow me to embed multiple iframe within a <div> so that I can expand collapse the window. I am looking at a style somewhat like <[login to view URL]> if you look at the following page: <[login to view URL]> The top are the filters, on the bottom i want a large middle section, below that i want two more containers side by side which will contain iframes. The layout should be flexible to allow me to add or subtract containers. All of these containers should have a maximize button which will allow the containers to expand to full size.