if (-s "$imagefile" < 700_000_000 and -e "$imagefile") {
        print '<script language="JavaScript">
                var x=window.confirm("Is there a CD/DVD in the drive?")
                if (!x)        
                window.location="http://hostname/cgi-bin/swish.cgi"
                </script>';
              print "\n\nISO not too big and exists. \nBurning the CDRW.\n\n"   
+     
             ."\nPlease be patient, this will take a while...\n\n";
              system "sudo cdrecord -v -eject dev=$device $imagefile";          
+       
}

( $? == 0 ) ? &success($date, $time, $hostname, $logdir, $to, $from) :
&failure($date, $time, $hostname, $logdir, $to, $from);

##</code><code>##

eval {
  foo() or die "foo failed";
  bar() or die "bar bombed";
  baz() or die "baz blew chunks";
  # etc.
}; # don't forget that semicolon!

handle_error($@) if $@;

# life is good...

# ...and in some dark corner of your code
sub handle_error {
  my $msg = shift;
  if ( $msg =~ /foo/ ) {
    # deal with foo's error;
  }
  elsif ($msg =~ /bar/ ) {
    # deal with bar's error
  }
  # etc.
  else {
    # deal with unexpected error
  }
}