Do anyone know this file - AC_RunActiveContent.js? - Macromedia Flash

This Easter I had a major, really bad virus / spyware attack. After that
several problems occurred, also in Flash. A problem I thought was part of the
attack, was that a JavaScript file started to be produced whenever I produced a
SWF file.
This summer I bought a new PC. I didn't want to use it on the Internet
(because of the bad experience this Easter), so I got the "thread less" (is
that what it's called in English?) network card removed before I ever started
the machine. Then I installed the system software and the Adobe Master
collection. I was really surprised when the JavaScript file was produced also
on my new computer. I thought it was a result of the virus / spyware attack.
Could anybody please tell me if this file is supposed to be produced when you
produce a SWF file? How come it never happened before Easter and the virus /
spyware attack?
I really hope someone can enlighten me!
The name of the Java script file is AC_RunActiveContent.js.
I tried to put the text of the script file here, but the system wouldn?t
accept it since the message became too big.