<zk>
       <tabbox id="tabbox" mold="accordion" width="400px">
           <tabs id="tabs"></tabs>
           <tabpanels id="tabpanels"></tabpanels>
       </tabbox>
       <button id="add" label="add">
       		<attribute name="onClick">
       		<![CDATA[
				Tab tab = new Tab();
				tab.setClosable(true);
				tab.setParent(tabs);
				tab.setLabel("tab");
				Tabpanel tabpanel = new Tabpanel();
				tabpanel.setParent(tabpanels);
				Label label = new Label("tabpanel");
				label.setParent(tabpanel);
       		]]>
       		</attribute>
       </button>
</zk>