Index: openacs-4/packages/xowiki/tcl/bootstrap-procs.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/xowiki/tcl/bootstrap-procs.tcl,v
diff -u -N -r1.11.2.7 -r1.11.2.8
--- openacs-4/packages/xowiki/tcl/bootstrap-procs.tcl	22 Aug 2019 14:30:26 -0000	1.11.2.7
+++ openacs-4/packages/xowiki/tcl/bootstrap-procs.tcl	22 Aug 2019 15:01:28 -0000	1.11.2.8
@@ -480,11 +480,20 @@
                 }
           }
         }
-        template::add_body_script -script [subst {
-          document.getElementById('$id').addEventListener('click', function (event) {
-            acs_ListBulkActionClick("$name","[$ba url]");
-          }, false);
+        set script [subst {
+          acs_ListBulkActionClick("$name","[$ba url]");
         }]
+        if {[$ba confirm_message] ne ""} {
+          set script [subst {
+            if (confirm('[$ba confirm_message]')) {
+              $script
+            }
+          }]
+        }
+        template::add_event_listener \
+            -id $id \
+            -preventdefault=false \
+            -script $script
       }
     }
   }