Bug 10310: Followup Prevent submitting form with enter does not work with IE

Check e.target.type instead of using jQuery.
Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Signed-off-by: Galen Charlton <gmc@esilibrary.com>
(cherry picked from commit c4978ef178)

Signed-off-by: Tomas Cohen Arazi <tomascohen@gmail.com>

koha-tmpl/intranet-tmpl/prog/en/js/prevent_submit.js

@@ -3,7 +3,7 @@ $(document).ready(function() {
   $("#doc3 form").keypress(function (e) {
     if( e.which == 13
         && e.target.nodeName == "INPUT"
-        && $(e.target).attr('type') != "submit"
+        && e.target.type != "submit"
     ) {
         return false;
     }