I've seen websites that had large flash ads that covered content on pages that, after they had run, resized or disappeared.

We would like to use the technology behind that (presumably JavaScript) to show and hide an intro flash on a home page. We would like to have a "close" link on the flash also.

I have searched Google and here but haven't found any good resources and many of the sites I have seen using the technology are no longer using them. I just need a little assistance on the JavaScript part of the puzzle.

We want the flash to start over the copy on the page and then roll out softly when it's done playing, revealing the content below.

Does anyone have a clue how to accomplish this?