Dynamic Page and Variable Length External Content

[V12CatMan]

I have created a page wide placeholder to receive external content and used the dynamic page tweak to automatically extend the page length as required. The placeholder is at the bottom of the page before the footer.

My question is can I somehow create a space on the page - say a rectangular column on the right side - that will receive the external content and automatically extend the placeholder area and the page? I don't want a scrolling I-Frame. Would there be a way to use "div" code to achieve this?

I'm using Designer Pro 6.

Clarification - I can do it as long as there is no content below the placeholder. Can it be done so the expanding content pushes the remaining page content down if there is content below the placeholder?

Thanks
Gary