diff --git a/org.adempiere.ui.zk/WEB-INF/src/org/adempiere/webui/adwindow/ADTabpanel.java b/org.adempiere.ui.zk/WEB-INF/src/org/adempiere/webui/adwindow/ADTabpanel.java
index 6917c7ec07..bd4e5acf7c 100644
--- a/org.adempiere.ui.zk/WEB-INF/src/org/adempiere/webui/adwindow/ADTabpanel.java
+++ b/org.adempiere.ui.zk/WEB-INF/src/org/adempiere/webui/adwindow/ADTabpanel.java
@@ -230,7 +230,7 @@ DataStatusListener, IADTabpanel, IdSpace
 		if (south == null) {			
 			south = new South();
 			borderLayout.appendChild(south);
-			south.setWidgetOverride("doClick_", "function (evt){this.$doClick_(evt);" +
+			south.setWidgetOverride("doClick_", "function (evt){this.$supers('doClick_', arguments);" +
 					"var target = evt.domTarget;if (!target.id) target = target.parentNode;" +
 					"if(this.$n('colled') == target) {" +
 					"var se = new zk.Event(this, 'onSlide', null, {toServer: true}); zAu.send(se); } }");
diff --git a/org.adempiere.ui.zk/WEB-INF/zk.xml b/org.adempiere.ui.zk/WEB-INF/zk.xml
index d8656feee4..be2671e8fc 100644
--- a/org.adempiere.ui.zk/WEB-INF/zk.xml
+++ b/org.adempiere.ui.zk/WEB-INF/zk.xml
@@ -99,4 +99,9 @@
 		</name>
 		<value>11px</value>
 	</library-property>	
+	<!-- turn off borderlayout animation -->	
+	<library-property>
+    	<name>org.zkoss.zul.borderlayout.animation.disabed</name>
+    	<value>true</value>
+	</library-property>
 </zk>