adding animation

core/src/main/resources/lib/form/advanced/advanced.js

@@ -13,7 +13,14 @@ Behaviour.specify("INPUT.advanced-button", 'advanced', 0, function(e) {
                 var row = container.lastChild;
                 if(nameRef!=null && row.getAttribute("nameref")==null)
                     row.setAttribute("nameref",nameRef); // to handle inner rowSets, don't override existing values
+                $(row).setOpacity(0);
+
                 tr.parentNode.insertBefore(row, $(tr).next());
+
+                new YAHOO.util.Anim(row, {
+                    opacity: { to:1 }
+                }, 0.2, YAHOO.util.Easing.easeIn).animate();
+
             }
             layoutUpdateCallback.call();
         });