I have a similar issue in that I want to invalidate an HTTP Session I have with a Google Web Toolkit Frontend in one of my portlets. There is no way to detect that the portlet has been closed and then signal through my Portlet and JSP that the HTTPSession should be closed. Can I do this through a custom JSP tag or Javascript call from my portlet? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4188971#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...