Expandable Flash Content

I’d like to create a expandable flash file that lays over html content. Here’s what I am trying to figure out how to do. I have a client that I made a flash banner for that has flash map that you can interact with which I loaded in as an external flash file. The client would like the map bigger for better viewing, but currently only the US map and not the whole world, so what I would like to do is make a button that expands just the US map with locations and add some rollover interactivity, but it would have to lay over the html content. So currently my flash file is 682 by 201 placed in div on html page, I’d like to expand out of that box to larger map system. This link shows the original flash file http://www.artransport.com/

I’ve seen this expandable box thing in Flash Ads, but not just for regular content. Here’s a really good example of flash expandable which would similar to what I would like to do http://www.doubleclick.com/insight/gallery/examples/american-express-plum-card.asp just using on onclick so it stays and onclick to close. I’ve seen a lot of google ads do this to lately. I’m using the CS4 products.

I’ve tryed making my original document the full size for instance, 682 by 501 and loaded that into my div, but when played, the flash is resized to fit in my div space of 682 by 201 and there is no expansion over html content at all. Can anyone help?

Thank you.