there are two ways to do this, (probably more, but those are
the fist that I can think of):
Use PHP (or any other server-side script) to transfer the
date to Flash via flash-vars.
User Java-script to retrieve them and a) send them to Flash,
or embed your swf with Java-Script and use flash-vars like with
No way (that I know of) to retrieve the Variable from inside
the swf. The _url parameter only gives you the url of the swf file,
not that of the page that is included in.