+function disable_continue() {
+ // disable keydown-event and continue button to prevent
+ // impatient users to add parts multiple times
+ $('#multi_items_result input').off("keydown");
+ $('#continue_button').prop('disabled', true);
+}
+
+function enable_continue() {
+ $('#multi_items_result input').keydown(function(event) {
+ if(event.keyCode == 13) {
+ event.preventDefault();
+ add_multi_items();
+ return false;
+ }
+ });
+ $('#continue_button').prop('disabled', false);
+}
+