my ($dbh,$record,$tagslib,$field_number) = @_;
my $res="
<script>
function Blur$field_number() {
function Blur$field_number(ev) {
var isbn = document.getElementById('$field_number');
var isbn = document.getElementById(ev.data.id);
var url = '../cataloguing/plugin_launcher.pl?plugin_name=unimarc_field_010.pl&isbn=' + isbn.value;
var req = \$.get(url);
req.done(function(resp){
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