% } elsif ( $sub eq 'invnum_search' ) {
%
% my $string = $cgi->param('arg');
-% my $inv = qsearchs('cust_bill', { 'invnum' => $string });
-% my $return = $inv ? findbycustnum($inv->custnum,0) : [];
+% if ( $string =~ /^(\d+)$/ ) {
+% my $inv = qsearchs('cust_bill', { 'invnum' => $1 });
+% my $return = $inv ? findbycustnum($inv->custnum,0) : [];
<% objToJson($return) %>
+% } else { #return nothing
+[]
+% }
% }
% elsif ( $sub eq 'exact_search' ) {
% # XXX possibly should query each element separately