i have given the user the option to upload his own aspx and code behind

i will extract the path by the help of upload control and display the page onto the users home page, am thinking of using iframe

but the problem of iframe is its size if fixed,

are there any other ways of displaying page within a page without the use of iframes?

and is there any efficient way of achieving the above goal?

if there is no alternative please give a link explaining how privide resizing in iframes at the users end.