Pop up confirmation box / perl cgi

Hi,

I need to add confirmation pop up msg box before deleting the record from database, I have added following snippets to my code but its not working for me, your help will be much appreciated :

print header;
print <<EOF;
<script type="text/javascript">
function confirmOk() {
return window.confirm("Confirm deletion?");
}
</script>
EOF

And

# If the form was properly submitted, save the data
if ($input{"go"} eq "DELETE") {
 
print button(-name=>'Delete',
-value=>'DO you really want to delete it ?',
-onClick=>"return confirmOk()");
 
$query = "DELETE ....

Many thanks
Terry

---------- Post updated at 05:26 AM ---------- Previous update was at 03:57 AM ----------

Following is the complete script :

#!/usr/local/bin/perl
use CGI;
use DBI;
# Make up a pulldown menu of all known patients
$db_handle = DBI -> connect("DBI:Pg:dbname=northwind;
                                    host=localhost",
                                    "postgres",
                                    "postgres",
                                    {'RaiseError' => 1});
$query = "SELECT 
             \"EmployeeID\" AS empid, 
             \"FirstName\"::text || ' ' ||\"LastName\"::text AS name 
          FROM 
             \"Employees\"";
$db_handle->do("SET search_path to northwind") or die;
$qh = $db_handle->prepare($query);
$qh->execute;
while (@row = $qh->fetchrow) {
        $hh .= "<option value=$row[0]>$row[1]</option>\n";
        }
# Send out the header and form
print "content-type: text/html\n\n";
print <<"HEADER";
<html>
<head>
<title>Delete an employee record</title>
<body bgcolor=pink text=#3300CC border=2 bordercolor=pink >
<h1 style="color:3300CC;">Delete an employee</h1>
    <style type="text/css">
    .container {
        width: 500px;
        clear: both;
    }
    .container input {
        width: 100%;
        clear: both;
    }
    </style>
</head>
<div class="container">
<form method=POST>
Select Employee name to delete :<select name=empid>$hh</select><br>
<input type=submit name=go value=DELETE>
</div>
</form><hr>
HEADER
print header;
print <<EOF;
<script type="text/javascript">
function confirmOk() {
   return window.confirm("Confirm deletion?");
}
</script>
EOF 
 
# Read information from the form
read(STDIN,$buffer,$ENV{CONTENT_LENGTH});
@pairs = split(/&/,$buffer);
foreach (@pairs) {
        ($n,$v) = split(/=/);
        $v =~ tr/+/ / ;
        $v =~ s/%(..)/pack("C",hex($1))/ge;
        $input{$n} = $v;
        }
# If the form was properly submitted, save the data
if ($input{"go"} eq "DELETE") {
print button(-name=>'Delete',
                         -value=>'DO you really want to delete it ?',
                         -onClick=>"return confirmOk()");
$query = "DELETE
          FROM 
              \"Employees\" 
          WHERE 
              \"EmployeeID\"="." \'$input{empid}\'";
$db_handle -> do($query);
$action = "Record saved - $query";
 
# If the form has not been submitted, ask for data
}  else {
$action = "Please complete form";
}
# Standard links to the rest of the application
print <<"FOOTER";
<b>$action</b>
<hr>
Jump to - <a href=http://localhost/perlproj/cgi-bin/emp2.pl>View Employees Listing</a><br>
Jump to - <a href=http://localhost/perlproj/cgi-bin/addemp.pl>Add an Employee</a><br>
Jump to - <a href=http://localhost/perlproj/cgi-bin/updatephoto.pl>Add or update Employee Photo</a><br>
<hr>
Edited by Terry on July, 06 2014.
</body></html>
FOOTER