Indexhibit Support

Hello family, thanks for your time...

I want this background for my website:

simonerudolph.de/

Yes, is a SWFOBJECT, but I dont know how to do it.

First. What file I need to modify? INDEX.PHP or STYLE.CSS? Both?

I have tried in different ways.

1. 1. Inserting this code in index.php
2. <script type="text/javascript" src="pacotilla.es/ndxzsite/js/swfobject/swfobject.js"></…;
3. <script type="text/javascript">

var flashvars = {};
var params = {
wmode: "transparent",
loop: "true"
};
var attributes = {};

swfobject.embedSWF("simonerudolph.de/video/…", "flashback", "100%", "100%", "10.0.0","expressInstall.swf", flashvars, params, attributes);

1. 2. Or Inserting this code in style.css
2. #flashback {
3. z-index: 1;
4. position: fixed;
5. top: 0;
6. left: 0;
7. width: 100%;
8. height: 100%;
9. }

Which is the right way?

My website is pacotilla.es/… and now is DEFAULT (I have INDEXHIBIT 2.1)
Please... Can you help me? I think is easy but I cant find the key!