1. How to get window instance in a servlet? zkoss.org
Please, search for GenericForwardComposer and read the MVC Smalltalks. There you can read about the history and working of the composers and why they made the life easier. If you extends from GenericForwardComposer you have full access to all components that are defined in your zul-file by an autowireing feature of this composer.
2. Modal window from JSP zkoss.org
3. Closing window initiated in JSP zkoss.org
4. Moving from zk window to jsp window zkoss.org
5. ZK window cannot hide after include inJSP zkoss.org