But if put 2 same portlet window in the same portal page which return the same jsp page using extjs ,there will be display error occured. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4170707#4170707 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4170707