Invisible hidden iframe

Hello, I need a script that will do the same thing as : - the code has not to be visible to users ( in the source code ) - the URL need to be gatheted from my rotator link and need to update every 5 min - only IE users need to execute script ( all other users dont load iframe ) - be creative , the code DO NOT have to be something that someone will be able to say that there is an iframe on the page. - Maybe hidde the iframe in a flash banner ? This is just an idea i will let you propose me your idea. - you must sign a NDA - you must be available to start now and deliver the code within few hours...