my $pjx = new CGI::Ajax( 'exported_func' => \&perl_func );
print $pjx->build_html( $cgi, \&Show_HTML); # First ajax call
my $sec_pjx = new CGI::Ajax( 'exported_func' => \&sec_perl_func );
print $sec_pjx->build_html( $cgi, \&Show_HTML);  # Second ajax call