We typically indicate the empty renderer in the page description file portal-object.xml. Not sure this approach will meet your needs. | <window> | <window-name>Intro</window-name> | <instance-ref>introInstance</instance-ref> | <region>top</region> | <height>2</height> | <properties> | <property> | <name>theme.renderSetId</name> | <value>emptyRenderer</value> | </property> | </properties> | </window> | As for preventing drag & drop for windows within a specific region... we modified the dyna.js file to remove the drag & drop hooks for any window regions within an enclosing div which has a special class name we use to indicate the region shouldn't allow drag or drop activity. We add the special class name to a region in the layout JSP. Maybe others have a better solution? View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4226260#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...