adjust height of a DIV according to externally loaded content

adjust height of a DIV according to externally loaded content

is it possible to adjust height of a DIV or IFRAME according to externally loaded content (another PHP) using jQuery? and actually, is it possible to do when i load external content recursively (i load external content into already loaded external content)?

you can see what i mean at http://www.janper.sk and click MINULE PROJEKTY

thanks!