sub {

my $in = $_[0];
my $strings = q|
a~097
b~098
c~099
d~100
e~101
f~102
g~103
h~104
i~105
j~106
k~107
l~108
m~109
n~110
o~111
p~112
q~113
r~114
s~115
t~116
u~117
v~118
w~119
x~120
y~121
z~122
1~049
2~050
3~051
4~052
5~053
6~054
7~055
8~056
9~057
0~048
&~038
~032
_~095
-~045
@~064
.~046
|;

my $back;
my @address = split //, $in; # cut the email address up into each charachter...
my @strings = split /\n/, $strings;

foreach (@address) {

my $next;

foreach my $s (@strings) {

$s =~ s/\s$//g;

next if $next == 1;

my ($char,$equiv) = split /~/, $s; # get the charachter, and its numerical equiv

if ($char eq $_) {
$char =~ s/\Q$char/$equiv/i;
$char = '&#' . $char . ';';
$back .= $char; # add the new replacement to $back
$next = 1;
}

}

}

return $back;

}