Well, here's a problem that's a likely culprit:
You're using strict, GOOD! Keep it in there.
However, your $query variable isn't declared as a global or with "my" (preferred).
Change the line $query = new CGI; to my $query= new CGI; and you've fixed this variable so it can run correctly under strict.
You should declare variables with "my" when you're using strict, which, of course, you're always doing : )
Here's a great node on scoping.
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