$back =~ s/\n/<br>/gm;
 $back =~ s/\;/&sbquo\;/g;
 $back =~ s/ä/&auml\;/g;
 $back =~ s/ö/&ouml\;/g;
 $back =~ s/ü/&uuml\;/g;
 $back =~ s/Ä/&Auml\;/g;
 $back =~ s/Ö/&Ouml\;/g;
 $back =~ s/Ü/&Uuml\;/g;
 $back =~ s/ß/&szlig\;/g;
 $back =~ s/\"/&quot\;/g;
 $back =~ s/&/&amp\;/g;