diff --git a/web-world/js-impl.js b/web-world/js-impl.js
index c3abd99..48acf90 100644
--- a/web-world/js-impl.js
+++ b/web-world/js-impl.js
@@ -1148,6 +1148,8 @@
             if (element !== undefined) {
                 fireEvent(element, objectToEvent(evt));
             }
+            evt.stopPropagation();
+            evt.preventDefault();
         };
         $(element).bind(this.type, this.handler);
         k();